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ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 1 of 14 2g30n-rev.f001 general description features the ec93c46a provides 1024 bits of serial electrically erasable programmable read only memory (eeprom) organized as 64 words of 16 bits each, when the org pin is connected to vcc and 128 words of 8 bits each when it is tied to ground. the ec93c46a is available in space- saving pdip-8, sop-8, tssop-8, msop-8 , and dfn- 8 packages. the ec93c46a is enabled through the chip select pin (cs), and accessed via a 3-wire serial interface consisting of data input (di), data output ( do), and shift clock (sk) signals. upon receiving a read instruction at di, the address is decoded and the data is clocked out serially on the data output pin do. the write cycle is completely self- timed and no separate erase cycle is required before write. the w rite cycle is only enabled when it is in the erase/write enable state. when cs is brought high following the initiation of a write cycle, the do pin outputs the ready/busy status. low-voltage operation - 1.7v (vcc = 1.7v to 5.5v) three-wire serial interface 2 mhz clock rate(5v) compatibility self-timed write cycle (5 ms max) high-reliability - endurance: 1 million write cycles - data retention: 100 years pdip-8, sop-8, tssop-8, msop-8, and dfn-8 packages. pin configuration sop - 8 ts sop - 8 msop - 8 top view top view top view pin name functions cs chip select sk serial data clock di serial data input do serial data output gnd ground v cc power supply org internal organization dc don't connect dfn - 8 bottom view pdip - 8 top view
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 2 of 14 2g30n-rev.f001 block diagram notes: when the org pin is connected to vcc, the x 16 o rganization is selected. when it is connected to ground, the x 8 organization is selected. if the org pin is left unconnected and the application doe s not load the input beyond the capability of the int ernal 1 meg ohm pullup, then the x 16 organizatio n is selected.
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 3 of 14 2g30n-rev.f001 functional descriptions the ec93c46a is accessed via a simple and versatile three- wire serial communication interface. device operation is controlled by seven instructions issue d by the host processor. a valid instruction starts with a rising edge of cs and consists of a start bit (logic1) followed by the appropriate op code and the desired memory address location. instruction s et for the ec93c46a instruction sb op code address data comments x8 x16 x8 x16 read 1 10 a 6 - a 0 a 5 - a 0 reads data stored in memory, at specified address ewen 1 00 11xxxxx 11xxxx write enable must precede all programming modes erase 1 11 a 6 - a 0 a 5 - a 0 erase memory location an - a0 write 1 01 a 6 - a 0 a 5 - a 0 d 7 C d 0 d 15 C d 0 writes memory location an - a0 eral 1 00 10xxxxx 10xxxx erases all memory locations. valid only at vcc = 4.5v to 5.5v wral 1 00 01xxxxx 01xxxx d 7 C d 0 d 15 C d 0 writes all memory locations. valid only at vcc = 4.5v to 5.5v ewds 1 00 00xxxxx 00xxxx disables all programming instructions notes: the xs in the address field represent don t care values and must be clocked. read (read): the read (read) instruction contains the address co de for the memory location to be read. after the instruction and address are decoded, data from the selected memory location is available at the serial output pin do. output data changes are synchronized with the rising edges of serial clock sk. it shoul d be noted that a dummy bit (logic 0) precedes the 8- or 16-bit data output string. erase/write (ewen): to assure data integrity, the part automatically g oes into the erase/write disable (ewds) state when power is first applied. an erase/ write enable(ewen) instruction must be executed fir st before any programming instructions can be carried out. please note that once in the ewen state, programming remains enabled until an ewds instructi on is executed or vcc power is removed from the par t. erase (erase): the erase (erase) instruction programs all bits in the specified memory location to the logical 1 state. the self-timed erase cycle start s once the erase instruction and address are decode d. the do pin outputs the ready/busy status of the part if cs is brought high after being kept low for a mini mum of 250 ns (tcs). a logic 1 at pin do indicates that the selected memory location has been erased, and t he part is ready for another instruction. write (write): the write (write) instruction contains the 8 or 16 bits of data to be written into the specified memory location. the self-timed programming cycle, twp, starts after the last bit of data is received at serial data input pin di. the do pin outputs the ready/bus y status of the part if cs is brought high after be ing kept low for a minimum of 250 ns (tcs). a logic 0 at d o indicates that programming is still in progress. a logic 1 indicates that the memory location at the specified address has been written with the data pattern con tained in the instruction and the part is ready for further i nstructions. a ready/busy status cannot be obtained if the cs is brought high after the end of the selftimed prog ramming cycle, twp. erase all (eral): the erase all (eral) instruction programs every bi t in the memory array to the logic 1 state and is primarily used for testing purposes. t he do pin outputs the ready/busy status of the part if cs is brought high after being kept low for a minimum of 250 ns (tcs). the eral instruction is valid only at vcc = 5.0v 10%.
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 4 of 14 2g30n-rev.f001 function descriptions write all (wral): the write all (wral) instruction programs all memo ry locations with the data patterns specified in the instruction. the do pin outputs th e ready/busy status of the part if cs is brought hi gh after being kept low for a minimum of 250 ns (tcs). the w ral instruction is valid only at vcc = 5.0v 10%. erase /write disable (ewds): to protect against accidental data disturb, the er ase/write disable (ewds) instruction disables all programming modes a nd should be executed after all programming operati ons. the operation of the read instruction is independen t of both the ewen and ewds instructions and can be executed at any time. ordering information marking information package type part number marking marking informatio n sop-8 ec93c46anm1gx 93c46a lllll yywwt lllll is the last five numbers of wafer lot number yyww is date code. t is tracking code ,t=x tssop-8 ec93c46ane1gx msop-8 ec93c46anr1gx pdip-8 EC93C46ANP1GX dfn-8 ec93c46anf2gx c46a llll llll is the last four numbers of wafer lot number available package types part number sop-8 tssop-8 msop-8 dfn-8 pdip-8 ec93c46a v v v v v
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 5 of 14 2g30n-rev.f001 electrical characteristics absolute maximum ratings dc supply voltage --------------------------------- --------------------------------------------------- --- -0.3v to +6.5v input / output voltage ---------------------------- --------------------------------------------------- ---- gnd-0.3v to v cc +0.3v operating ambient temperature --------------------- ------------------------------------------------ - 40c to +85c storage temperature ------------------------------- --------------------------------------------------- -- -65c to +150c comments stresses above those listed under "absolute maximum ratings" may cause permanent damage to this device . these are stress ratings only. functional operation of this device at these or any other conditions ab ove those indicated in the operational sections of this speci fication is not implied or intended. exposure to th e absolute maximum rating conditions for extended periods may affect device reliability. dc characteristics applicable over recommended operating range from: t a = ?40c to +85c, v cc = +1.7v to +5.5v (unless otherwise noted) symbol parameter test condition min typ max units v cc1 supply voltage - 1.7 - 5.5 v v cc2 supply voltage - 2.7 - 5.5 v v cc3 supply voltage - 4.5 - 5.5 v i cc supply current v cc = 5.0v read at 1.0 mhz - 0.5 2.0 ma write at 1.0 mhz - 2 3.0 ma i sb1 standby current v cc = 1.7v cs = 0v - - 1.0 a i sb2 standby current v cc = 2.7v cs = 0v - - 1.0 a i sb3 standby current v cc = 5.0v cs = 0v - - 1.0 a i il(1) input leakage v in = 0v to v cc - 0.1 1.0 a i il(2) input leakage v in = 0v to v cc - 2.0 3.0 a i ol output leakage v in = 0v to v cc - 0.1 1.0 a v il1(3) input low voltage 2.7v v cc 5.5v -0.3 - 0.8 v v ih1(3) input high voltage 2.0 - v cc +0.3 v v il2(3) input low voltage 1.8v v cc 2.7v -0.5 - v cc x0.3 v v ih2(3) input high voltage v cc x0.7 - v cc +0.3 v v il3(3) input low voltage v cc =1.7v -0.5 - v cc x0.2 v v ih3(3) input high voltage v cc x0.7 - v cc +0.3 v v ol1 output low voltage 2.7v v cc 5.5v iol = 2.1ma - - 0.4 v v oh1 output high voltage ioh = -0.4ma 2.4 - - v v ol2 output low voltage 1.7v v cc 2.7v iol = 0.15ma - - 0.2 v v oh2 output high voltage ioh = -100a v cc -0.2 - - v notes: 1. di cs sk input pin 2. org input pin 3. vil min and vih max are reference only and are not tested. pin capacitance applicable over recommended operating range from t a = 25c, f = 1.0 mhz, v cc = +1.7v (unless otherwise noted) symbol test conditions max unit conditions cout output capacitance (do) 5 pf vout = 0v cin input capacitance (cs, sk, di,org) 5 pf vin = 0v
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 6 of 14 2g30n-rev.f001 ac characteristics applicable over recommended operating range from t a = ?40c to + 85c, v cc = +1.7v to + 5.5v, c l = 1 ttl gate and 100pf (unless otherwise noted) symbol parameter test condition min typ max units f sk sk clock frequency 4.5v v cc 5.5v 0 - 2 mhz 2.7v v cc 5.5v 0 - 1 1.7v v cc 5.5v 0 - 0.25 t skh sk high time 4.5v v cc 5.5v 250 - - ns 2.7v v cc 5.5v 250 - 1.7v v cc 5.5v 1000 - - t skl sk low time 4.5v v cc 5.5v 250 - - ns 2.7v v cc 5.5v 250 - - 1.7v v cc 5.5v 1000 - - t cs minimum cs low time 4.5v v cc 5.5v 250 - - ns 2.7v v cc 5.5v 250 - - 1.7v v cc 5.5v 1000 - - t css cs setup time relative to sk 4.5v v cc 5.5v 50 - - ns 2.7v v cc 5.5v 50 - - 1.7v v cc 5.5v 200 - - t dis di setup time relative to sk 4.5v v cc 5.5v 100 - - ns 2.7v v cc 5.5v 100 - 1.7v v cc 5.5v 400 - - t csh cs hold time relative to sk 0 - - ns t dih di hold time relative to sk 4.5v v cc 5.5v 100 - - ns 2.7v v cc 5.5v 100 - - 1.7v v cc 5.5v 400 - - t pd1 output delay to 1 ac test 4.5v v cc 5.5v - - 250 ns 2.7v v cc 5.5v - - 250 1.7v v cc 5.5v - - 1000 t pd0 output delay to 0 ac test 4.5v v cc 5.5v - - 250 ns 2.7v v cc 5.5v - 250 1.7v v cc 5.5v - - 1000 t sv cs to status valid ac test 4.5v v cc 5.5v - - 250 ns 2.7v v cc 5.5v - - 250 1.7v v cc 5.5v - - 1000 t df cs to do in high impedance ac test cs = vil 4.5v v cc 5.5v - - 100 ns 2.7v v cc 5.5v - - 100 1.7v v cc 5.5v - - 400 t wp write cycle time - - - 1.5 5 ms endurance (1) 5.0v, 25c - 1m - - write cycle notes: 1. this parameter is characterized and is no t 100% tested.
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 7 of 14 2g30n-rev.f001 timing diagrams synchronous data timing organization key for timing diagrams i/o ec 93c46 a (1k) x 16 x 8 an a5 a6 dn d15 d7
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 8 of 14 2g30n-rev.f001 read timing ewen timing ewds timing write timing
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 9 of 14 2g30n-rev.f001 wral timing erase timing eral timing
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 10 of 14 2g30n-rev.f001 mechanical dimensions outline drawing pdip - 8 available package types : ec93c46a top view side view section b - b end view common dimensions (unit of measure = mm) symbol min max a 3.60 4.00 a1 0.51 - a2 3.10 3.50 a3 1.50 1.70 b 0.44 0.53 b1 0.43 0.48 b 1.52 bsc c 0.25 0.31 c1 0.24 0.26 d 9.05 9.45 e1 6.15 6.55 e 2.54 bsc ea 7.62 bsc eb 7.62 9.50 ec 0 0.94 l 3.00 -
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 11 of 14 2g30n-rev.f001 mechanical dimensions outline drawing sop - 8 available package types ec93c46a top view end view side view common dimensions (unit of measure = mm) symbol min max a 1.35 1.75 a1 0.10 0.25 b 0.31 0.51 c 0.17 0.25 d 4.70 5.10 e1 3.80 4.00 e 5.79 6.20 e 1.27 bsc l 0.40 1.27 0 8
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 12 of 14 2g30n-rev.f001 mechanical dimensions outline drawing tssop - 8 available package types ec93c46a top view end view side view common dimensions (unit of measure = mm) symbol min max d 2.80 3.20 e 6.20 6.60 e1 4.20 4.60 a - 1.20 a2 0.80 1.15 b 0.19 0.30 e 0.65 bsc l 0.45 0.75 l1 1.00 bsc 0 8
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 13 of 14 2g30n-rev.f001 mechanical dimensions outline drawing msop - 8 available package types : ec93c46a top view side view section b -b end view common dimensions (unit of measure = mm) symbol min max a - 1.10 a1 0.05 0.15 a2 0.75 0.95 a3 0.30 0.40 b 0.29 0.38 b1 0.28 0.33 c 0.15 0.20 c1 0.14 0.16 d 2.90 3.10 e 4.70 5.10 e1 2.90 3.10 e 0.65 bsc l 0.40 0.70 l1 0.95 bsc 0 8
ec93c46a three-wire serial eeprom e-cmos corp. ( www.ecmos.com.tw ) page 14 of 14 2g30n-rev.f001 mechanical dimensions outline drawing dfn - 8 available package types ec93c46a top view end view side view bottom view common dimensions (unit of measure = mm) symbol min max a 0.70 0.80 a1 - 0.05 b 0.18 0.30 c 0.18 0.25 d 1.90 2.10 d2 1.50 ref e 0.50 bsc nd 1.50 bsc e 2.90 3.10 e2 1.60 bsc l 0.30 0.50 h 0.20 0.30

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