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mic2564a micrel march 2004 1 m0250-031104 features standard 3-wire serial control data input controls two card slots from one surface mount device high-efficiency, low-resistance switches 12v supply optional (not required by mic2564a) current limit and overtemperature shutdown ultra-low 1 m a-typical standby power consumption cross-conduction lockout (no switching transients) break-before-make switching 1a minimum v cc output per slot independent v cc and v pp voltage output (mic2564a-1) 120ma minimum v pp output current per slot lead-free 24-pin surface-mount tssop package ul recognized, file #179633 applications pc card and cardbus power control zoom video port power control wireless communications bar code data collection systems docking stations (portable and desktop) power supply management general description the mic2564a is dual-slot pc card pcmcia (personal com- puter memory card international association) and cardbus power controller. it is a sophisticated power switching matrix that controls v cc and v pp voltages to two pc card slots. the mic2564a is used in conjunction with a serial-data output logic controller using the standard three-wire serial control data format. when connected to 3.3v, 5v, and 12v system power supplies, the mic2564a can switch its v cc outputs between 0v, 3.3v, 5.0v, and high-impedance states and v pp outputs between 0v, 3.3v, 5v, 12v, and high-impedance states. the v cc outputs will supply a minimum of 1a current to the socket and the v pp outputs will supply a minimum of 120ma to the socket. voltage rise and fall times are well controlled. the mic2564a also features an efficient standby (sleep) mode at 0.3 m a typical quiescent current. 12v and 5v supplies are not required for mic2564a operation making it possible to omit one or both supplies when they are not needed by the system. an internal charge pump supplies the internal bias voltages required for high-performance switching. the mic2564a is protected by overtemperature shutdown, and protects itself and the system with current limiting and cross- conduction lockout. the mic2564a is available in 24-pin ssop, 24-pin tssop, and an environmentally friendly (lead-free) 24-pin tssop. all support documentation can be found on micrel? web site at www.micrel.com. typical application mic2564a power controller gnd v pp in ( optional ) v cc3 in v cc5 in ( optional ) ( optional ) 12v 3.3v ( optional ) 5v system power supply rst# serial control bus system reset dual-slot logic controller pcmcia, cardbus, or zoom video a v pp out a v cc out b v pp out b v cc out pcmcia card a v pp1 v pp2 v cc pcmcia card b v pp1 v pp2 v cc motherboard slot a slot b address and data lines between logic controller and pcmcia cards not shown. pcmcia card power management application mic2564a dual serial pcmcia/cardbus power controller micrel, inc. ?1849 fortune drive ?san jose, ca 95131 ?usa ?tel + 1 (408) 944-0800 ?fax + 1 (408) 944-0970 ?http://www.mic rel.com ul recognized component
mic2564a micrel m0250-031104 2 march 2004 pin configuration vcc5 in b vcc out 13 12 b vcc out vcc3 in 14 11 1 vcc5 in a vcc out vcc5 in a flag sda scl rst# sla b flag vcc5 in 24 a vcc out vcc3 in a vcc out gnd a vpp out vpp in vpp in b vpp out gnd b vcc out 23 22 21 20 19 18 17 16 15 2 3 4 5 6 7 8 9 10 24-lead ssop (sm) 24-lead tssop (ts) pin description pin number pin name pin function 1, 3, 10, 12 vcc5 in 5v supply input: optional system power supply connection. required only for 5v v cc and v pp output voltage. 2, 22, 24 a vcc out slot a v cc output: pins 2, 22 and 24 must be externally connected together. 4 a flag channel a v cc and v pp output monitor (output): low on error condition. 5 sda serial data (input). 6 scl serial clock (input). 7 rst# system reset (input): active low signal deactivates the mic2564a, clearing the serial registers and forcing the four power outputs to 0v (gnd). 8 sla serial data latch (input). 9 b flag channel b v cc and v pp output monitor (output): low on error condition. 11, 13, 15 b vcc out slot b v cc output: pins 11, 13 and 15 must be externally connected together. 14, 23 vcc3 in 3.3v supply input: required system power supply connection. powers 3.3v v cc and v pp outputs and all internal circuitry. 16, 21 gnd ground. 17 b vpp out slot b v pp output. 18, 19 vpp in 12v supply input: optional system power supply connection. required only for 12v v pp output voltage. 20 a vpp out slot a v pp output. ordering information part number temperature range package lead-finish mic2564a-0bsm C40 c to +85 c 24-pin ssop standard mic2564a-1bsm* C40 c to +85 c 24-pin ssop standard mic2564a-0bts C40 c to +85 c 24-pin tssop standard mic2564a-1bts* C40 c to +85 c 24-pin tssop standard MIC2564A-0YTS C40 c to +85 c 24-pin tssop lead-free mic2564a-1yts* C40 c to +85 c 24-pin tssop lead-free * -1 option: independent v pp out and v cc out programming
mic2564a micrel march 2004 3 m0250-031104 electrical characteristics (4) v cc3 in = 3.3v, v cc5 in = 5.0v, v pp in = 12v; t a = 25 c, bold indicates C40 c t a +85 c; unless noted. symbol parameter conditions min typ max units v pp output i pp out high-impedance output shutdown mode 1 10 m a hi-z leakage current v pp out = 0v i ppsc short circuit current limit v pp out = 0v, normal mode (5) 120 260 400 ma r o switch resistance v pp out = 5v selected, 1.6 5 w i pp out = C100ma (sourcing) v pp out = 3.3v selected, 1.3 5 w i pp out = C100ma (sourcing) v pp out = 12v selected, v pp in = 12v, 1.3 2.3 w i pp out = C100 ma (sourcing) v pp out = 0v [ground] selected, 2000 5000 w i pp out = 50 m a (sinking) v pp switching time (see figure 3) t 1 output turn-on delay (6) v pp out = hi-z to 10% of 3.3v, r l = 100 w 1 100 m s t 2 v pp out = hi-z to 10% of 5v, r l = 100 w 1 100 m s t 3 v pp out = hi-z to 10% of 12, rl = 100 w 50 250 m s t 4 output rise time v pp out = 10% to 90% of 3.3, r l = 100 w 10 100 500 m s t 5 v pp out = 10% to 90% of 5, r l = 100 w 10 250 1000 m s t 6 v pp out = 10% to 90% of 12, r l = 100 w 10 100 500 m s t 7 output transition time (6) v pp out = 3.3v to 90% of 12v, r l = 100 w 10 100 500 m s t 8 v pp out = 5v to 90% of 12, r l = 100 w 10 100 500 m s t 9 v pp out = 12v to 90% of 3.3, r l = 100 w 10 100 500 m s t 10 v pp out = 12v to 90% of 5, r l = 100 w 10 250 1000 m s t 11 output turn-off fall time v pp out = 90% to 10% of 3.3, r l = 100 w 1 500 m s t 12 v pp out = 90% to 10% of 5, r l = 100 w 1 500 m s t 13 v pp out = 90% to 10% of 12, r l = 100 w 1 500 m s notes: 1. exceeding the absolute maximum rating may damage the device. 2. the device is not guaranteed to function outside its operating rating. 3. devices are esd sensitive. handling precautions recommended. 4. specification for packaged product only. 5. output enabled into short circuit. 6. measurement is from the 50% point of the sla rising edge. absolute maximum ratings (1) v pp in ...................................................................... +13.6v v cc3 in ....................................................................... +6.0v v cc5 in ....................................................................... +6.0v v scl , v sda , v sla , v rst# .................................... C0.3v to +6.0v v a flag , v b flag ....................................................... +6.0v a or b v pp out ....................... >120ma, internally limited a or b v cc out .............................. >1a, internally limited power dissipation (p d ) at t a 25 c ....... internally limited storage temperature ............................... C65 c to +150 c lead temperature (5 sec.) ...................................... +260 c esd rating (3) operating ratings (2) v pp in ............................................................ 0v to +13.2v v cc3 in ........................................................ +3.0v to +5.5v v cc5 in ............................................................. 0v to +5.5v v scl , v sda , v sla , v rst# ................................. 0v to +5.5v a or b v pp out ................................................ 0 to 120ma a or b v cc out ....................................................... 0 to 1a clock frequency ................................................. 0 to 2mhz ambient temperature (t a ) ......................... C40 c to +85 c junction temperature (t j ) ...................................... +125 c package thermal resistance ssop (q ja ) ...................................................... 90 c/w tssop (q ja ) .................................................... 83 c/w
mic2564a micrel m0250-031104 4 march 2004 symbol parameter conditions min typ max units t 14 output turn-off delay time (8, 11) v pp out = 3.3v to hi-z, r l = 100 w 150 m s t 15 v pp out = 5v to hi-z, r l = 100 w 150 m s t 16 v pp out = 12v to hi-z, r l = 100 w 150 m s v cc output i cc out hi-z high-impedance output shutdown mode, v cc out = 0v 1 20 m a leakage current i ccsc short circuit current limit v cc out = 0, normal mode, 1.0 2.0 3.0 a v cc3 or v cc5 switches (9) r o switch resistance v cc out = 3.3v selected, 120 150 m w i cc out = C1a (sourcing) v cc out = 5v selected, 85 120 m w i cc out = C1a (sourcing) v cc out = 0v [ground] selected, 2000 3900 w i cc out = 0.1ma (sinking) v cc switching time (see figure 4) t 17 output turn-on delay time (8) v cc out = 0v to 10% of 3.3, r l = 10 w 250 500 m s t 18 v cc out = 0v to 10% of 5.0, r l = 10 w 500 1000 m s t 19 output rise time v cc out = 10% to 90% of 3.3v, r l = 10 w 750 1200 5000 m s t 20 v cc out = 10% to 90% of 5, r l = 10 w 1000 2200 5000 m s t 21 output fall time v cc out = 90% to 10% of 3.3, r l = 10 w 100 550 1000 m s t 22 v cc out = 90% to 10% of 5.0, r l = 10 w 100 400 2000 m s t 23 output turn-off delay (8, 10) v cc out = 3.3v to 90% of 3.3v, r l = 10 w 400 2000 m s t 24 v cc out = 5v to 90% of 5v, r l = 10 w 400 2000 m s power supply i cc3 v cc3 in supply current (3.3v) (11) v cc out = 5v or 3.3v, i cc out = 0 120 200 m a v cc out = hi-z (sleep mode) 5 10 m a i cc5 v cc5 in supply current (5v) (12) v cc out = 5v or 3.3v, i cc out = 0 25 50 m a v cc out = hi-z (sleep mode) 0.2 10 m a i pp in v pp in supply current (12v) (12) v pp out = 0v, 3.3v, 5v, or hi-z; i pp out = 0 1 10 m a v pp out = v pp in 4 50 m a v cc3 operating input voltage (3.3v) note 11 3.0 3.3 5.5 v v cc5 operating input voltage (5v) note 12 5.0 5.5 v v pp operating input voltage (12v) notes 12, 13 12 13.2 v notes: 7. specification for packaged product only. 8. measurement is from the 50% point of the sla rising edge. 9. output enabled into short circuit. 10. measurement is from the hi-z- or 0v-state command to the beginning of the slope. measurement does not apply when device is i n current limit or thermal shutdown. 11. v cc3 in powers all internal logic, bias, and drive circuitry, and is required for operation. 12. v pp and v cc5 in are not required for operation. 13. v pp in must be either high-impedance or greater than or approximately equal to the highest voltage v cc in the system. for example, if both 3.3v and 5v are connected to the mic2564a, v pp in must be either 5v, 12v, or high-impedance. electrical characteristics (7)
mic2564a micrel march 2004 5 m0250-031104 symbol parameter conditions min typ max units thermal shutdown t sd thermal shutdown temperature 145 c serial interface dc specifications v ih input voltage: sda, scl, sla pins 0.7v cc3 in 5.5 v v il input voltage: sda, scl, sla pins C0.3 0.3v cc3 in v i in input current 0v < v in < 5.5v C1 0.2 1 m a flag i flg flag leakage current v flg = 5v 1 m a serial interface timing requirements (see figures 1 and 2) (14) t hd:dat sda hold time 75 ns t su:dat sda setup time data before clock 75 ns t su:sla latch setup time 50 ns t su:rst# reset to data setup time rst# before data 50 ns t w minimum pulse width clock (t w:clk )50ns latch (t w:sla ) 100 ns reset (t w:rst )50ns data (t w:da )50ns t r scl rise time f = 32khz (15) 0 100 ns t f scl fall time f = 32khz (15) 0 100 ns notes: 14. guaranteed by design not production tested. 15. guaranteed by characterization but not production tested. serial control timing diagram sda sla scl d8 d7 d6 d5 d4 d3 d2 d1 d0 t su:dat t su:sla t hd:dat t su:rst# rst# t w:dat t w:clk t w:sla figure 1. serial control timing diagram the mic2564a uses a three-wire serial interface to control v cc and v pp outputs for both sections a and b. the three control lines have thresholds compatible with both 3.3v and 5v logic families. data (sda) is clocked in on the rising clock edge. the clock signal may be continuous or it may halt after all data is clocked in. scl 10% 90% 10% t r t f 90% figure 2. scl rise and fall times
mic2564a micrel m0250-031104 6 march 2004 output timing diagrams ab cd v pp enable v pp out /flag v pp to 3.3v v pp to 12v 12v 5v 3.3v 0 0 v pp to 5v v pp off v pp to 12v v pp off ef g j h t 6 t 9 t 13 v pp off t 3 v pp to 5v v pp to 3.3v v pp to 12v t 4 t 7 t 14 t 11 t 2 t 5 t 8 t 10 t 15 t 12 k t 16 t 1 figure 3. v pp timing diagram v pp enable is shown generically. r l = 100 w . c l = negligible. refer to the serial control timing diagrams for details. at time a, v pp = 3.3v is selected, b, v pp is set to 12v, c, v pp = 3.3v (from 12v), d, v pp is disabled, e, v pp is programmed to 5v, f, v pp is set to 12v, g, v pp is programmed to 5v, h, v pp is disabled, j, v pp is set to 12v, k, v pp is again disabled. abc d t 17 t 19 t 23 t 21 t 18 t 20 t 24 t 22 v cc enable v cc out /flag v cc to 3.3v v cc to 5v v cc off v cc off 0 5v 3.3v 0 0 figure 4. v cc timing diagram v cc enable is shown generically. r l = 10 w . refer to the serial control timing diagrams for specific control logic input. at time a, v cc is programmed to 3.3v, b, v cc is disabled, c, v cc is programmed to 5v, d, v cc is disabled.
mic2564a micrel march 2004 7 m0250-031104 mic2564a-0 logic t able d8 d7 d6 d5 d4 d3 d2 d1 d0 shdn b v cc5 b v cc3 b v pp_vcc b v pp_pgm a v cc5 a v cc3 a v pp_vcc a v pp_pgm b v pp out b v cc out a v pp out a v cc out 0xxxxxxxx hi-z hi-z hi-z hi-z 1 0000 0v*0v* 1 0001 12v ? 0v* ? 1 0010 0v*0v* 1 0011 hi-z 0v* 1 0100 0v* 3.3v 1 0101 12v 3.3v 1 0110 3.3v3.3v 1 0111 hi-z 3.3v 1 1000 0v*5v 1 1001 12v5v 1 1010 5v5v 1 1011 hi-z 5v 1 1100 0v*0v* 1 1101 12v ? 0v ? 1 1110 0v*0v* 1 1111 hi-z 0v* 10000 0v*0v* 10001 12v ? 0v* ? 10010 0v*0v* 10011 hi-z 0v* 10100 0v*5v 10101 12v5v 10110 5v5v 10111 hi-z 5v 11000 0v* 3.3v 11001 12v 3.3v 11010 3.3v 3.3v 11011 hi-z 3.3v 11100 0v*0v* 11101 12v ? 0v* ? 11110 0v*0v* 11111 hi-z 0v* x = dont care, * clamped to ground, ? illegal state per the pc card specification.
mic2564a micrel m0250-031104 8 march 2004 mic2564a-1 logic t able d8 d7 d6 d5 d4 d3 d2 d1 d0 shdn b v cc5 b v cc3 b v pp_vcc b v pp_pgm a v cc5 a v cc3 a v pp_vcc a v pp_pgm b v pp out b v cc out a v pp out a v cc out 0xxxxxxxx hi-z hi-z hi-z hi-z 1 0000 0v*0v* 1 0001 12v ? 0v* ? 1 0010 0v*0v* 1 0011 hi-z 0v* 1 0100 0v* 3.3v 1 0101 12v 3.3v 1 0110 3.3v 3.3v 1 0111 5v 3.3v 1 1000 0v*5v 1 1001 12v5v 1 1010 5v5v 1 1011 3.3v 5v 1 1100 0v*0v* 1 1101 12v ? 0v ? 1 1110 0v*0v* 1 1111 hi-z 0v* 10000 0v*0v* 10001 12v ? 0v* ? 10010 0v*0v* 10011 hi-z 0v* 10100 0v*5v 10101 12v5v 10110 5v5v 10111 3.3v5v 11000 0v* 3.3v 11001 12v 3.3v 11010 3.3v 3.3v 11011 5v 3.3v 11100 0v*0v* 11101 12v ? 0v* ? 11110 0v*0v* 11111 hi-z 0v* x = dont care, * clamped to ground, ? illegal state per the pc card specification.
mic2564a micrel march 2004 9 m0250-031104 functional diagram gate-drive charge pump v cc3 in 3.3v mic2564 gnd thermal shutdown current limit a flag scl rst# sda v cc5 in 5v (optional) v pp in 12v (optional) a v pp out b v pp out a v cc out b v cc out sla control logic b flag
mic2564a micrel m0250-031104 10 march 2004 applications information pc card power control for two sockets is easily accomplished using the mic2564a pc card/cardbus power controller. control commands from a three-wire (plus reset) serial bus determine v cc and v pp output voltages and select standby or operate mode. v cc outputs of 3.3v and 5v at the maximum allowable pc card current are supported. the v cc outputs also support gnd (0v) and high-impedance states. the v pp outputs support v pp (12v), v cc voltages (3.3v or 5v), gnd (0v), or high-impedance. when the v cc = hi-z (high-impedance) condition is selected, the device switches into sleep mode and draws only leakage current. full protection during hot switching is provided which pre- vents feedback from the v cc output (for example, from the 5v supply into the 3.3v supply) by locking out the low-voltage switch until the initial switchs gate voltage drops below 0.7v. mic2564a internal logic and mosfet drive circuitry is powered from the v cc3 input and internal charge-pump voltage multipliers. switching speeds are carefully controlled to prevent damage to sensitive loads and meet all pc card specification timing requirements, including those for the cardbus option. supply bypassing the mic2564a is a switch and has no stability problems; however, supply bypass capacitors are recommended to reduce inductive transients and improve output ripple. as all internal device logic and comparison functions are powered from the v cc3 input, the power supply quality on this line is the most important. micrel recommends placing 1 m f surface- mount ceramic (low esr) capacitors from v cc3 in and v cc5 in pins to ground and two 0.1 m f surface-mount ceramic capacitors, one from each v pp in pin, to ground. also, the v cc out and v pp out pins may use 0.01 m f to 0.1 m f capacitors for noise reduction and to reduce the chance of esd (electrostatic discharge) damage. power status feedback (flags) two flag outputs monitor the v cc and v pp output voltages on both slot a and b, falling low when the voltage is not proper. use of these open-drain flag outputs is optional; if they are used, a pull-up resistor to either the 3.3v or 5v supply is required. unused flag outputs may be left open. pc card slot implementation the mic2564a is designed for full compatibility with the pcmcia (personal computer memory card international association) pc card specification including the cardbus and zoom video (zv) options. when a pc card is initially inserted, it should receive v cc (3.3v 0.3v or 5.0v 5%). the initial voltage is determined by a combination of mechanical socket keys and voltage sense pins. the card sends a handshaking data stream to the logic controller, which then determines if this card requires v pp and if the card is designed for dual v cc . if the card is compatible with, and requires, a different v cc level, the logic controller commands the power controller to make this change by disabling v cc , waiting at least 100ms, and then re- enabling the other v cc voltage. if no card is inserted, or the system is in sleep mode, the logic controller commands the mic2564a to shut down v cc . this also places the switch into a shutdown (sleep) mode, where current consumption drops to nearly zero, with only tiny cmos leakage currents flowing. internal device control logic, mosfet drive and bias voltage is powered from v cc3 in. the high voltage bias is generated by an internal charge pump multiplier. input logic threshold voltages are compatible with common pc card logic control- lers using either 3.3v or 5v supplies. pc card voltage regulation the mic2564a has been designed to meet or exceed pc card voltage regulation specifications. the on-resistance of the fet switches will meet regulation requirements at 600ma and 1a respectively for v cc = 5v 3% and 3.3v 3%. flash memory implementation when programming flash memory (standard +12v flash memories), the pc card slot logic controller enables v pp on the mic2564a, which connects v pp in (nominally +12v) to v pp out. the low on-resistance of the mic2564a switch allows using a small bypass capacitor on the v pp out pins, with the main filtering performed by a large filter capacitor on v pp in. (usually the main power supply filter capacitor is sufficient.) using a small-value capacitor such as 0.1 m f on the output causes little or no timing delays. the v pp out transition from v cc to 12.0v typically takes 200 m s. after programming is completed, the logic controller signals to the mic2564a, which then reduces v pp out to the v cc level. break-before-make switching action and con- trolled rise times reduce switching transients and lower current spikes through the switch. output current and protection the mic2564a meets or exceeds all pcmcia specifications. mic2564a output switches are capable of passing the maxi- mum current needed by any pc card. for system and card protection, output currents are internally limited. for full system protection, long term (longer than a few milliseconds) output short circuits invoke overtemperature shutdown, pro- tecting the mic2564a, the system power supplies, the card socket pins, board traces, and the pc card. individual internal status registers for each slot indicate when power problems exist. control bus interface overview the mic2564a power controller communicates with a logic controller (host adapter) via a 3-wire serial interface. a fourth control line attaches to the system reset line (rst#) and places all mic2564a switches in the high-impedance (off) state. the reset function is active low.
mic2564a micrel march 2004 11 m0250-031104 a flg b flg sda scl sla rst# 4 9 5 6 8 7 a v pp out a v cc out b v pp out b v cc out 20 2, 22, 24 17 11, 13, 15 16, 21 v cc3 in v cc5 in v pp in gnd vcc a pgood b pgood sdata sclk slatch rst# 0.01 f v pp1 v pp2 v cc controller power (3.3v or 5v) generic pcmcia/cardbus host adapter system reset +12v +5v +3.3v 1.0 f 1.0 f 0.1 f 18, 19 1, 3, 10 14, 23 0.01 f 0.01 f 0.01 f v pp1 v pp2 v cc slot b slot a 2 330k mic2564 power controller ceramic ceramic ceramic 0.1 f figure 5. generic ?-wire?serial control interface sda scl sla rst# 5 6 8 7 a v pp out a v cc out b v pp out b v cc out 20 2, 22, 24 17 11, 13, 15 16, 21 v cc3 in v cc5 in v pp in sdata sclk slatch rst# 0.01 f v pp1 v pp2 v cc cirrus logic cl-pd6832/33 18, 19 1, 3, 10 14, 23 0.01 f 0.01 f 0.01 f v pp1 v pp2 v cc slot b slot a mic2564 power controller 131 132 130 207 gnd system reset +12v +5v +3.3v 1.0 f 1.0 f 0.1 f ceramic ceramic ceramic 0.1 f figure 6. cirrus logic cl-pd6832 and cl-pd6833 interface
mic2564a micrel m0250-031104 12 march 2004 sda scl sla rst# 5 6 8 7 a v pp out a v cc out b v pp out b v cc out 20 2, 22, 24 17 11, 13, 15 16, 21 v cc3 in v cc5 in v pp in cpwrdata cpwrclk cpwrlatc rst# 0.01 f v pp1 v pp2 v cc o 2 micro oz6832 oz6833 0.01 f 0.01 f 0.01 f v pp1 v pp2 v cc slot b slot a mic2564 power controller 131 132 130 207 gnd system reset +12v +5v +3.3v 1.0 f 1.0 f 0.1 f 18, 19 1, 3, 10 14, 23 ceramic ceramic ceramic 0.1 f figure 7. o 2 micro oz6833 and oz6933 sda scl sla rst# 5 6 8 7 a v pp out a v cc out b v pp out b v cc out 20 2, 22, 24 17 11, 13, 15 16, 21 v cc3 in v cc5 in v pp in sdata sclk slatch rst# 0.01 f v pp1 v pp2 v cc o 2 micro oz6836 oz6860 system reset 0.01 f 0.01 f 0.01 f v pp1 v pp2 v cc slot b slot a mic2564 power controller 116 118 115 250 gnd +12v +5v +3.3v 1.0 f 1.0 f 0.1 f 18, 19 1, 3, 10 14, 23 ceramic ceramic ceramic 0.1 f figure 8. o 2 micro oz6860
mic2564a micrel march 2004 13 m0250-031104 package information 2.00 (0.079) 1.73 (0.068) 0.21 (0.008) 0.05 (0.002) coplanarity: 0.10 ( 0.004 ) max 1.25 (0.049) ref 0.65 (0.0260) bsc 0.875 (0.034) ref 10 4 0 C8 5.40 (0.213) 5.20 (0.205) 7.90 (0.311) 7.65 (0.301) 8.33 (0.328) 8.07 (0.318) 0.38 (0.015) 0.25 (0.010) 0.22 (0.009) 0.13 (0.005) 0.95 (0.037) 0.55 (0.022) dimensions: mm (inch) 24-pin ssop (sm) 1.10 max (0.043) 0.15 (0.006) 0.05 (0.002) 1.00 (0.039) ref 8 0 6.4 bsc (0.252) 7.90 (0.311) 7.70 (0.303) 0.30 (0.012) 0.19 (0.007) 0.20 (0.008) 0.09 (0.003) 0.70 (0.028) 0.50 (0.020) dimensions: mm (inch) 4.50 (0.177) 4.30 (0.169) 0.65 bsc (0.026) 24-pin tssop (ts)
mic2564a micrel m0250-031104 14 march 2004 micrel, inc. 1849 fortune drive san jose, ca 95131 usa tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 web http://www.micrel.com the information furnished by micrel in this data sheet is believed to be accurate and reliable. however, no responsibility is a ssumed by micrel for its use. micrel reserves the right to change circuitry and specifications at any time without notification to the customer. micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfu nction of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or systems that (a) are intend ed for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant inj ury to the user. a purchasers use or sale of micrel products for use in life support appliances, devices or systems is at purchasers own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2003 micrel, incorporated.

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