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s-93l76a www.sii-ic.com low voltage operation 3-wire serial e 2 prom ? seiko instruments inc., 2004-2010 rev.4.0 _00 seiko instruments inc. 1 the s-93l76a is a low voltage operating, high speed, low current consumption, 8 k-bit 3-wire serial e 2 prom with a wide operating voltage range. it is organized as 512-word 16-bit respectively. each is capable of sequential read, at which time addresses are automatically incremented in 16-bit blocks. the communication method is by the microwire bus. ? features ? low current consumption standby: 2.0 a max. (v cc = 5.5 v) read: 0.8 ma max. (v cc = 5.5 v) 0.4 ma max. (v cc = 2.5 v) ? wide operating voltage range read: 1.6 to 5.5 v write: 1.8 to 5.5 v (write, erase) 2.7 to 5.5 v (wral, eral) ? sequential read capable ? write protect function during the low power supply voltage ? endurance: 10 6 cycles/word *1 (at + 85 c) ? data retention: 100 years (at + 25 c) 20 years (at + 85 c) ? s-93l76a: 8 k-bit ? lead-free, sn 100%, halogen-free *2 *1. for each address (word: 16-bit) *2. refer to ? ? product name structure ? for details. ? packages ? snt-8a ? 8-pin sop (jedec) ? 8-pin tssop ? tmsop-8 caution this product is intended to use in genera l electronic devices such as consumer electronics, office equipment, and communications devi ces. before using the product in medical equipment or automobile equipment including car audio, keyless entry and engine control unit, contact to sii is indispensable.
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 2 ? pin configurations snt-8a top view table 1 pin no. symbol description 1 nc no connection 2 vcc power supply 3 sk serial clock input 4 cs chip select input 5 do serial data output 6 di serial data input 7 test *1 test 8 gnd ground *1. connect to gnd or v cc . even if this pin is not connec ted, performance is not affected so long as the absolute maximum rating is not exceeded. 1 2 3 4 8 7 6 5 gnd test di do nc vcc sk cs figure 1 s-93l76ad0i-i8t1x 8-pin sop(jedec) top view table 2 pin no. symbol description 1 cs chip select input 2 sk serial clock input 3 di serial data input 4 do serial data output 5 gnd ground 6 test *1 test 7 nc no connection 8 vcc power supply *1. connect to gnd or v cc . even if this pin is not connec ted, performance is not affected so long as the absolute maximum rating is not exceeded. 1 2 3 4 8 7 6 5 vcc nc test gnd cs sk do di figure 2 s-93l76ad0i-j8t1x
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 3 8-pin tssop top view table 3 pin no. symbol description 1 cs chip select input 2 sk serial clock input 3 di serial data input 4 do serial data output 5 gnd ground 6 test *1 test 7 nc no connection 8 vcc power supply *1. connect to gnd or v cc . even if this pin is not connec ted, performance is not affected so long as the absolute maximum rating is not exceeded. 1 2 3 4 8 7 6 5 vcc nc test gnd cs sk do di figure 3 s-93l76ad0i-t8t1x tmsop-8 top view table 4 pin no. symbol description 1 cs chip select input 2 sk serial clock input 3 di serial data input 4 do serial data output 5 gnd ground 6 test *1 test 7 nc no connection 8 vcc power supply *1. connect to gnd or v cc . even if this pin is not connec ted, performance is not affected so long as the absolute maximum rating is not exceeded. 3 2 4 1 8 6 7 5 vcc nc test gnd cs sk do di figure 4 s-93l76ad0i-k8t3u remark 1. see dimensions for details of the package drawings. 2. x: g or u 3. please select products of environmental code = u for sn 100%, halogen-free products.
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 4 ? block diagram memory array data register address decoder mode decode logic output buffer vcc gnd do di cs clock generator sk voltage detector figure 5
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 5 ? instruction set table 5 instruction start bit operation code address data sk input clock 1 2 3 4 5 6 7 8 9 10 11 12 13 14 to 29 read (read data) 1 1 0 x a8 a7 a6 a5 a4 a3 a2 a1 a0 d15 to d0 output *1 write (write data) 1 0 1 x a8 a7 a6 a5 a4 a3 a2 a1 a0 d15 to d0 input erase (erase data) 1 1 1 x a8 a7 a6 a5 a4 a3 a2 a1 a0 ? wral (write all) 1 0 0 0 1 x x x x x x x x d15 to d0 input eral (erase all) 1 0 0 1 0 x x x x x x x x ? ewen (write enable) 1 0 0 1 1 x x x x x x x x ? ewds (write disable) 1 0 0 0 0 x x x x x x x x ? *1. when the 16-bit data in the specified address has been output, the data in the next address is output. remark x: don't care
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 6 ? absolute maximum ratings table 6 item symbol ratings unit power supply voltage v cc ? 0.3 to + 7.0 v input voltage v in ? 0.3 to v cc + 0.3 v output voltage v out ? 0.3 to v cc v operating ambient temperature t opr ? 40 to + 85 c storage temperature t stg ? 65 to + 150 c caution the absolute maximum ratings are rated values exceeding which the product could suffer physical damage. these values must therefore not be exceeded under any conditions. ? recommended operating conditions table 7 item symbol conditions min. max. unit read, ewds 1.6 5.5 v write, erase , ewen 1.8 5.5 v power supply voltage v cc wral, eral 2.7 5.5 v v cc = 4.5 to 5.5 v 2.0 v cc v v cc = 2.7 to 4.5 v 0.8 v cc v cc v high level input voltage v ih v cc = 1.6 to 2.7 v 0.8 v cc v cc v v cc = 4.5 to 5.5 v 0.0 0.8 v v cc = 2.7 to 4.5 v 0.0 0.2 v cc v low level input voltage v il v cc = 1.6 to 2.7 v 0.0 0.15 v cc v ? pin capacitance table 8 (ta = 25 c, f = 1.0 mhz, v cc = 5.0 v) item symbol conditions min. max. unit input capacitance c in v in = 0 v ? 8 pf output capacitance c out v out = 0 v ? 10 pf ? endurance table 9 item symbol operating ambient temperature min. max. unit endurance n w ? 40 to + 85 c 10 6 ? cycles/word *1 *1. for each address (word: 16 bits) ? data retention table 10 item symbol operating ambient temperature min. max. unit + 25 c 100 ? year data retention ? ? 40 to + 85 c 20 ? year
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 7 ? dc electrical characteristics table 11 v cc = 4.5 to 5.5 v v cc = 2.5 to 4.5 v v cc = 1.6 to 2.5 v item symbol conditions min. max. min. max. min. max. unit current consumption (read) i cc1 do no load ? 0.8 ? 0.5 ? 0.4 ma table 12 v cc = 4.5 to 5.5 v v cc = 1.8 to 4.5 v item symbol conditions min. max. min. max. unit current consumption (write) i cc2 do no load ? 2.0 ? 1.5 ma table 13 v cc = 4.5 to 5.5 v v cc = 2.5 to 4.5 v v cc = 1.6 to 2.5 v item symbol conditions min. max. min. max. min. max. unit standby current consumption i sb cs = gnd, do = open, other inputs to v cc or gnd ? 2.0 ? 2.0 ? 2.0 a input leakage current i li v in = gnd to v cc ? 1.0 ? 1.0 ? 1.0 a output leakage current i lo v out = gnd to v cc ? 1.0 ? 1.0 ? 1.0 a i ol = 2.1 ma ? 0.4 ? ? ? ? v low level output voltage v ol i ol = 100 a ? 0.1 ? 0.1 ? 0.1 v i oh = ? 400 a 2.4 ? ? ? ? ? v i oh = ? 100 a v cc ? 0.3 ? v cc ? 0.3 ? ? ? v high level output voltage v oh i oh = ? 10 a v cc ? 0.2 ? v cc ? 0.2 ? v cc ? 0.2 ? v write enable latch data hold voltage v dh only when write disable mode 1.5 ? 1.5 ? 1.5 ? v
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 8 ? ac electrical characteristics table 14 measurement conditions input pulse voltage 0.1 v cc to 0.9 v cc output reference voltage 0.5 v cc output load 100 pf table 15 v cc = 4.5 to 5.5 v v cc = 2.5 to 4.5 v v cc = 1.6 to 2.5 v item symbol min. max. min. max. min. max. unit cs setup time t css 0.2 ? 0.4 ? 1.0 ? s cs hold time t csh 0 ? 0 ? 0 ? s cs deselect time t cds 0.2 ? 0.2 ? 0.4 ? s data setup time t ds 0.1 ? 0.2 ? 0.4 ? s data hold time t dh 0.1 ? 0.2 ? 0.4 ? s output delay time t pd ? 0.4 ? 0.8 ? 2.0 s clock frequency f sk 0 2.0 0 1.0 0 0.25 mhz sk clock time ?l? *1 t skl 0.1 ? 0.25 ? 1.0 ? s sk clock time ?h? *1 t skh 0.1 ? 0.25 ? 1.0 ? s output disable time t hz1 , t hz2 0 0.15 0 0.5 0 1.0 s output enable time t sv 0 0.15 0 0.5 0 1.0 s *1. the clock cycle of the sk clock (frequency: f sk ) is 1/f sk s. this clock cycle is determined by a combination of several ac characteristics, so be aware that even if the sk clock cycle time is minimized, the clock cycle (1/f sk ) cannot be made equal to t skl (min.) + t skh (min.). table 16 v cc = 1.8 to 5.5 v item symbol min. typ. max. unit write time t pr ? 4.0 10.0 ms
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 9 t skh t cds t css cs valid data valid data di t skl sk t sv t hz2 t csh t hz1 t pd t pd t ds t dh t ds t dh high- z high- z high-z do do (read) (verify) high-z *1 1/f sk *2 *1. indicates high impedance. *2. 1/f sk is the sk clock cycle. this clock cycle is determined by a combination of several ac characteristics, so be aware that even if the sk clock cycle time is minimized, the clock cycle (1/f sk ) cannot be made equal to t skl (min.) + t skh (min.). figure 6 timing chart
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 10 ? operation all instructions are executed by ma king cs ?h? and then inputting di at the rising edge of the sk pulse. an instruction is input in the order of its start bit, instruction, address, and data. the start bit is recognized when ?h? of di is input at the rising edge of sk after cs has been made ?h?. as long as di remains ?l?, therefore, the start bit is not re cognized even if the sk pulse is input after cs has been made ?h?. the sk clock input while di is ?l? before the start bit is input is called a dummy cl ock. by inserting as many dummy clocks as required before the start bit, the number of cl ocks the internal serial interface of the cpu can send out and the number of clocks necessary for operati on of the serial memory ic can be adjusted. inputting the instruction is complete when cs is made ?l?. cs must be made ?l? once during the period of t cds in between instructions. ?l? of cs indicates a standby status. in this status, input of sk and di is invalid, and no instruction is accepted. 1. reading (read) the read instruction is used to read the data at a specified address. when this instruction is executed, the address a 0 is input at the rising edge of sk and the do pin, which has been in a high- impedance (high-z) state, outputs ?l ?. subsequently, 16 bits of dat a are sequentially output at the rising edge of sk. if sk is output after the 16-bit data of the specified address has been output, the address is automatically incremented, and t he 16-bit data of the next address is then output. by inputting sk sequentially with cs kept at ?h?, the data of the entire memory s pace can be read. when the address is incremented from the last address (a 8 ? a 1 a 0 = 1 ? 1 1), it returns to the first address (a 8 ? a 1 a 0 = 0 ? 0 0). a 8 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 +1 a 8 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 +2 cs 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 26 27 28 29 30 31 42 43 44 45 46 32 48 sk 1 1 x 0 a 8 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 di 0 d 15 d 14 d 13 d 15 d 14 d 13 d 2 d 1 d 0 d 15 d 14 d 13 d 2 d 1 d 0 high-z do high-z 47 figure 7 read timing
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 11 2. writing (write, erase, wral, eral) write instructions (write, erase, wral, and eral) ar e used to start writing data to the non-volatile memory by making cs ?l? after the s pecified number of clocks has been input. the write operation is completed within the write time t pr (10 ms) no matter which write instruction is used. the typical write time is less than half 10 ms. if the end of the write operation is known, therefore, the write cycle can be mi nimized. to ascertain the end of a write operation, make cs ?l? to start the write operation and then make cs ?h? again to check the status of the do output pin. this series of operations is called a verify operation. if do outputs ?l? during the verify operation period in wh ich cs is ?h?, it indica tes that a write operation is in progress. if do outputs ?h?, it indicates that the write operation is fini shed. the verify operation can be executed as many times as required. this operation can be executed in two ways. one is detecting the positive transition of do output from ?l? to ?h? while hol ding cs at ?h?. the other is detecting the positive transition of do output from ?l? to ?h? by making cs ?h? once and checking do output, and then returning cs to ?l?. during the write period, sk and di are invalid. do not input any instructions duri ng this period. input an instruction while the do pin is outputting ?h? or is in a high-impedance state. even while the do pin is outputing ?h?, do immediately goes into a high-impedance (h igh-z) state if ?h? of di (start bit) is input at the rising edge of sk. keep di ?l? during the verify operation period. 2.1 writing data (write) this instruction is used to write 16-bit data to a specified address. after making cs ?h?, input a start bit, the write instruction, an address, and 16-bit data. if data of more than 16 bits is input, the written data is sequent ially shifted at each clo ck, and the 16 bits input last are the valid data. the writ e operation is started when cs is m ade ?l?. it is not necessary to set data to ?1? before it is written. do <1> 2 3 4 5 6 7 8 9 10 11 12 13 14 29 0 1 x a8 a7 a6 a5 a4 a3 a2 a1 a0 d15 d0 di sk cs high-z t cds t sv t pr bus y read y standb y high- z t hz1 verif y 1 figure 8 data write timing
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 12 2.2 erasing data (erase) this instruction is used to erase specified 16-bit dat a. all the 16 bits of the data are ?1?. after making cs ?h?, input a start bit, the erase instruct ion, and an address. it is not necessary to input data. the data erase operation is started when cs is made ?l?. do <1> 2 3 4 5 6 7 8 9 10 11 12 13 1 1 x a8 a7 a6 a5 a4 a3 a2 a1 a0 di sk cs high-z t cds t sv t pr busy ready standb y high-z t hz1 verify 1 figure 9 data erase timing 2.3 writing to chip (wral) this instruction is used to write the same 16-bi t data to the entire address space of the memory. after making cs ?h?, input a start bit, the wral instruction, an address, and 16-bit data. any address may be input. if data of more than 16 bits is input, the written data is sequentially shifted at each clock, and the 16-bit data input last is the va lid data. the write operat ion is started when cs is made ?l?. it is not necessary to se t the data to ?1? before it is written. do <1> 2 3 4 5 6 7 8 9 10 11 12 13 14 29 0 0 0 1 d15 d0 di sk cs high-z t cds t sv t pr bus y read y standb y high- z t hz1 verif y 1 8xs figure 10 chip write timing 2.4 erasing chip (eral) this instruction is used to erase the data of the entire address space of the memory. all the data is ?1?. after making cs ?h?, input a start bit, the eral instruction, and an address. any address may be input. it is not necessary to input data. the chip erase operation is started when cs is made ?l?. do <1> 2 3 4 5 6 7 8 9 10 11 12 13 0 0 1 0 di sk cs high-z t cds t sv t pr busy ready standb y high-z t hz1 verify 1 8xs figure 11 chip erase timing
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 13 3. write enable (ewen) and write disable (ewds) the ewen instruction is used to enable a write operat ion. the status in which a write operation is enabled is called the program-enabled mode. the ewds instruction is used to disable a write oper ation. the status in which a write operation is disabled is called the program-disabled mode. the write operation is disabled upon power applicat ion and detection of a low supply voltage. to prevent an unexpected write operation due to external noise or a cpu malfunctions, it should be kept in write disable mode except when performing writ e operations, after power-on and before shutdown. <1> 2 3 4 5 6 7 8 9 10 11 12 13 0 0 di sk cs 11 = ewen 00 = ewds standb y 1 8xs figure 12 write enable/disable timing ? start bit a start bit is recognized by latching the high level of di at the rising edge of sk after changing cs to high (start bit recognition). a write operation begins by i nputting the write instruction and setting cs to low. subsequently, by setting cs to high agai n, the do pin outputs a low level if the write operation is still in progress and a high level if the write operation is comple te (verify operation). therefore, only after a write operation, in order to input the nex t command, cs is set to high, which switches the do pin from a high- impedance state (high-z) to a data output state. however, if start bit is recognized, the do pin returns to the high-impedance state (refer to figure 6 timing chart ). make sure that data output from the cpu does not interfere with the data output from the serial memory ic when configuring a 3 -wire interface by connecting the di input pin and do output pin, as such interference may cause a start bit fetch problem. take the measures described in ? ? 3-wire interface (direct connection between di and do) ?.
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 14 ? write protect function during the low power supply voltage the s-93l76a provides a built-in detector to detect a low power supply voltage and disable writing. when the power supply voltage is low or at power applicati on, the write instructions (write, erase, wral, and eral) are cancelled, and the write disable state (e wds) is automatically set. the detection voltage and the release voltage are 1.4 v typ. (refer to figure 13 ). therefore, when a write operation is performed a fter the power supply voltage has dropped and then risen again up to the level at which writing is possible, a write enable instruction (ewe n) must be sent before a write instruction (write, erase, wral, or eral) is executed. when the power supply voltage drops during a write operat ion, the data being writt en to an address at that time is not guaranteed. release voltage ( + v det ) 1.4 v typ. power supply voltage detection voltage ( ? v det ) 1.4 v typ. write instruction cancelled write disable state (ewds) automatically set figure 13 operation during low power supply voltage
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 15 ? 3-wire interface (direct connection between di and do) there are two types of serial interface configurations : a 4-wire interface configured using the cs, sk, di, and do pins, and a 3-wire interface that c onnects the di input pin and do output pin. when the 3-wire interface is employed, a period in which the data output from the cpu and the data output from the serial memory collide may occur, causing a malfunction. to prevent such a malfunction, connect the di and do pins of the s-93l76a via a resistor (10 k to 100 k ) so that the data output from the cpu takes precedence in being input to the di pin (refer to figure 14 ). cpu di sio do s-93l76 a r: 10 k figure 14 connection of 3-wire interface ? i/o pin 1. connection of input pins all the input pins of the s-93l76a employ a cmos structure, so design the equipment so that high impedance will not be input while the s-93l76a is operati ng. especially, deselect the cs input (a low level) when turning on/off power and during standby. when the cs pin is deselected (a low level), incorrect data writing will not occur. connec t the cs pin to gnd via a resistor (10 k to 100 k pull- down resistor). to prevent malfunction, it is re commended to use equivalent pull-down resistors for pins other than the cs pin. 2. equivalent circuit of input and output pin the following shows the equivalent circuits of input pins of the s-93l76a. none of the input pins incorporate pull-up and pull-down elements, so specia l care must be taken when designing to prevent a floating status. output pins are high-level/low-level/high-impedance tri- state outputs. the test pin is disconnected from the internal circuit by a switching transistor duri ng normal operation. as long as the absolute maximum rating is satisfied, the test pin and internal circuit will never be connected.
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 16 2.1 input pin cs figure 15 cs pin sk, di figure 16 sk, di pin test figure 17 test pin
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 17 2.2 output pin do v cc figure 18 do pin 3. input pin noise elimination time the s-93l76a includes a built-in low-pass filter to elimi nate noise at the sk, di, and cs pins. this means that if the supply voltage is 5.0 v (at room temperatur e), noise with a pulse width of 20 ns or less can be eliminated. note, therefore, that noise with a pulse width of more than 20 ns will be recognized as a pulse if the voltage exceeds v ih /v il . ? precaution do not apply an electrostatic discharge to this ic that exceeds the performanc e ratings of the built-in electrostatic protection circuit. sii claims no responsibility for any and all disputes aris ing out of or in connection with any infringement of the products including this ic upon patents owned by a third party.
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 18 ? characteristics (typical data) 1. dc characteristics 1.1 current consumption (read) i cc1 vs. ambient temperature ta 1.2 current consumption (read) i cc1 vs. ambient temperature ta ta ( c) 0.4 0.2 v cc = 5.5 v f sk = = 0101 0 ? 40 0 85 i cc1 (ma) ta ( c) 0.4 0.2 v cc = 3.3 v f sk = 500 khz data = 0101 0 ? 40 0 85 i cc1 (ma) 1.3 current consumption (read) i cc1 vs. ambient temperature ta 1.4 current consumption (read) i cc1 vs. power supply voltage v cc i cc1 (ma) ta ( c) 0.4 0.2 v cc = 1.8 v f sk = = 0101 0 ? 40 0 85 1 mhz 500 khz i cc1 (ma) 0.4 0.2 0 2 3 4 5 6 7 ta = 25 c f sk = = 0101 v cc (v) 1.5 current consumption (read) i cc1 vs. power supply voltage v cc 1.6 current consumption (read) i cc1 vs. clock frequency f sk 100 khz 10 khz i cc1 (ma) 0.4 0.2 0 2 3 4 5 6 7 v cc (v) ta = 25 c f sk = 100 khz, 10 khz data = 0101 i cc1 ( ma ) 0.4 0.2 0 v cc = 5.0 v ta = 25 c 1 m 2m 10m 10 k 100 k f sk (hz)
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 19 1.7 current consumption (write) i cc2 vs. ambient temperature ta 1.8 current consumption (write) i cc2 vs. ambient temperature ta ta ( c) 1.0 0.5 v cc = 5.5 v 0 ? 40 0 85 i cc2 (ma) i cc2 (ma) ta ( c) 1.0 0.5 v cc = 3.3 v 0 ? 40 0 85 1.9 current consumption (write) i cc2 vs. ambient temperature ta 1.10 current consumption (write) i cc2 vs. power supply voltage v cc ta ( c) 1.0 0.5 v cc = 2.7 v 0 ? 40 0 85 i cc2 (ma) 1.0 0.5 0 2 3 4 5 6 7 ta = 25 c v cc (v) i cc2 (ma) 1.11 current consumption in standby mode i sb vs. ambient temperature ta 1.12 current consumption in standby mode i sb vs. power supply voltage v cc ta (c) 1.0 0.5 v cc = 5.5 v cs = gnd 0 ? 40 0 85 i sb ( a) i sb ( a) 1.0 0.5 0 2 3 4 5 6 7 ta = 25 c cs = gnd v cc ( v )
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 20 1.13 input leakage current i li vs. ambient temperature ta 1.14 input leakage current i li vs. ambient temperature ta 1.0 0.5 v cc = = 0 v 0 ? 40 0 85 i li ( a) ta ( c) ta ( c) 1.0 0.5 0 ? = 5.5 v cs, sk, di, test = 5.5 v i li ( a) 1.15 output leakage current i lo vs. ambient temperature ta 1.16 output leakage current i lo vs. ambient temperature ta ta ( c) 1.0 0.5 v cc = = ? 40 0 85 i lo ( a) ta (c) 1.0 0.5 v cc = 5.5 v do = 5.5 v 0 ? 40 0 85 i lo ( a) 1.17 high-level output voltage v oh vs. ambient temperature ta 1.18 high-level output voltage v oh vs. ambient temperature ta ta ( c) 4.6 4.4 v cc = 4.5 v i oh = ? 400 a ? 40 0 85 v oh (v) 4.2 ta ( c) 2.7 2.6 v cc = 2.7 v i oh = ? 100 a ? 40 0 85 v oh (v) 2.5
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 21 1.19 high-level output voltage v oh vs. ambient temperature ta 1.20 high-level output voltage v oh vs. ambient temperature ta ta ( c) 2.5 2.4 v cc = = ? 100 a ? 40 0 85 v oh (v) 2.3 ta ( c) 1.9 1.8 v cc = 1.8 v i oh = ? 10 a ? 1.21 low-level output voltage v ol vs. ambient temperature ta 1.22 low-level output voltage v ol vs. ambient temperature ta ta ( c) 0.3 0.2 v cc = = ? 40 0 85 v ol (v) 0.1 ta ( c) 0.03 0.02 v cc = 1.8 v i ol = 100 a ? 1.23 high-level output current i oh vs. ambient temperature ta 1.24 high-level output current i oh vs. ambient temperature ta ta ( c) ? 20.0 ? 10.0 v cc = 4.5 v v oh = 2.4 v 0 ? 40 0 85 i oh (ma) ta ( c) ? 2 ? 1 v cc = 2.7 v v oh = 2.4 v 0 ? 40 0 85 i oh (ma)
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 22 1.25 high-level output current i oh vs. ambient temperature ta 1.26 high-level output current i oh vs. ambient temperature ta ta ( c) ? 2 ? 1 v cc = 2.5 v v oh = 2.2 v 0 ? 40 0 85 i oh (ma) ta ( c) ? ? = 1.8 v v oh = 1.6 v 0 ? 1.27 low-level output current i ol vs. ambient temperature ta 1.28 low-level output current i ol vs. ambient temperature ta ta ( c) 20 10 v cc = 4.5 v v ol = ? 40 0 85 i ol (ma) ta ( c) 1.0 0.5 v cc = 1.8 v v ol = 0.1 v 0 ? 40 0 85 i ol (ma) 1.29 input inverted voltage v inv vs. power supply voltage v cc 1.30 input inverted voltage v inv vs. ambient temperature ta 3.0 1.5 0 1 2 3 4 5 6 ta = c cs, sk, di v cc (v) v inv (v) 7 ta ( c) 3.0 2.0 v cc = 5.0 v cs, sk, di 0 ? 40 0 85 v inv ( v )
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 23 1.31 low supply voltage detection voltage ? v det vs. ambient temperature ta 1.32 low supply voltage release voltage + v det vs. ambient temperature ta ta ( c) 2.0 1.0 0 ? 40 0 85 ? v det (v) ta ( c) 2.0 1.0 0 ? 40 0 85 + v det (v) 2. ac characteristics 2.1 maximum operating frequency f max. vs. power supply voltage v cc 2.2 write time t pr vs. power supply voltage v cc 10k 2 3 4 5 ta = 25 c v cc (v) f max. (hz) 1 100k 1m 2m 4 2 2 3 4 5 6 7 ta = c v cc (v) t pr (ms) 1 2.3 write time t pr vs. ambient temperature ta 2.4 write time t pr vs. ambient temperature ta ta ( c) 6 4 v cc = ? 40 0 85 2 t pr (ms) ta ( c) 6 4 v cc = 3.0 v ? 40 0 85 2 t pr (ms)
low voltage operation 3-wire serial e 2 prom s-93l76a rev.4.0 _00 seiko instruments inc. 24 2.5 write time t pr vs. ambient temperature ta 2.6 data output delay time t pd vs. ambient temperature ta ta ( c) 6 4 v cc = ? 40 0 85 2 t pr (ms) ta ( c) 0.3 0.2 v cc = 4.5 v ? s) 2.7 data output delay time t pd vs. ambient temperature ta 2.8 data output delay time t pd vs. ambient temperature ta ta ( c) 0.6 0.4 v cc = ? 40 0 85 0.2 t pd ( s) ta ( c) 1.5 1.0 v cc = 1.8 v ? s)
low voltage operation 3-wire serial e 2 prom rev.4.0 _00 s-93l76a seiko instruments inc. 25 ? product name structure 1. product name (1) snt-8a,8-pin sop(jedec), 8-pin tssop packages package name (abbreviation) and ic packing specifications i8t1 : snt-8a, tape j8t1 : 8-pin sop(jedec), tape t8t1 : 8-pin tssop, tape fixed product name s-93l76a : 8k-bit s-93l76a d0i ? xxxx x environmental code u : lead-free (sn 100%), halogen-free g : lead-free (for details, please contact our sales office) (2) tmsop-8 package package name (abbreviation) and ic packing specifications k8t3 : tmsop-8, tape fixed product name s-93l76a : 8k-bit s-93l76a d0i ? k8t3 u environmental code u : lead-free ( sn 100% ), halo g en-free 2. package drawing code package name package tape reel land snt-8a ph008-a-p-sd ph008-a-c- sd ph008-a-r-sd ph008-a-l-sd environmental code = g fj008-a-p- sd fj008-d-c-sd fj008-d-r-sd 8-pin sop (jedec) environmental code = u fj008-a-p- sd fj008-d-c-sd fj008-d-r-s1 ? environmental code = g ft008-a-p- sd ft008-e-c-sd ft008-e-r-sd 8-pin tssop environmental code = u ft008-a-p- sd ft008-e-c-sd ft008-e-r-s1 ? tmsop-8 fm008-a-p-sd fm 008-a-c-sd fm008-a-r-sd ?

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www.sii-ic.com ? the information described herein is subject to change without notice. ? seiko instruments inc. is not responsible for any pr oblems caused by circuits or diagrams described herein whose related industrial properties, patents, or ot her rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarant ee the success of any specific mass-production design. ? when the products described herein are regulated produ cts subject to the wassenaar arrangement or other agreements, they may not be exported without authoriz ation from the appropriate governmental authority. ? use of the information described he rein for other purposes and/or repr oduction or copying without the express permission of seiko instrum ents inc. is strictly prohibited. ? the products described herein cannot be used as par t of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of seiko instruments inc. ? although seiko instruments inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may oc cur. the user of these products should therefore give thorough consideration to safety design, in cluding redundancy, fire-prevention measures, and malfunction prevention, to prevent any accident s, fires, or community damage that may ensue.

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