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ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 0 ? revision history revision description issue date rev. 1.0 initial issue jan. 09. 2012
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 1 ? features ? fast access time : 55/70ns ? low power consumption: operating current : 45/30ma (typ.) standby current : 4 a (typ.) sl-version ? single 2.7v ~ 3.6v power supply ? all inputs and outputs ttl compatible ? fully static operation ? tri-state output ? data byte control : lb# controlled dq0 ~ dq7 ub# controlled dq8 ~ dq15 ? data retention voltage : 1.2v (min.) ? green package available ? package : 48-pin 12mm x 20mm tsop-i general description the ly62l102516a is a 16,777,216-bit low power cmos static random ac cess memory organized as 1,048,576 words by 16 bits. it is fabricated using very high performance, high reliability cmos technology. its standby current is stable within the range of operating temperature. the ly62l102516a is well designed for low power application, and particularly well suited for battery back-up nonvolatile memory application. the ly62l102516a operates from a single power supply of 2.7v ~ 3.6v and all inputs and outputs are fully ttl compatible. product family product family operating temperatur e vcc range speed power dissipation standby(i sb1, typ.) operating(icc,typ.) ly62l102516a 0 ~ 70 2.7 ~ 3.6v 55/70ns 4a(sl) 45/30ma ly62l102516a(i) -40 ~ 85 2.7 ~ 3.6v 55/70ns 4a(sl) 45/30ma functional block diagram control circuit decoder 1024kx16 memory array column i/o a0~a19 vcc vss dq8-dq15 upper byte dq0-dq7 lower byte i/o data circuit ce2 we# oe# lb# ub# ce# pin description symbol description a0 - a19 address inputs dq0 ? dq15 data inputs/outputs ce#, ce2 chip enable input we# write enable input oe# output enable input lb# lower byte control ub# upper byte control v cc power supply v ss ground
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 2 ? pin configuration tsop-i a15 a14 a13 a12 a8 ly62l102516a 8 7 6 5 4 3 2 1 a11 a10 a9 nc a19 we# ce2 nc ub# lb# a18 a17 a7 a6 a5 a4 a3 a2 a1 14 13 12 11 10 9 16 15 22 21 20 19 18 17 24 23 dq13 nc dq15 dq7 dq14 dq6 44 41 42 43 a16 vss 48 47 45 46 33 36 35 34 38 39 40 37 25 28 27 26 30 31 32 29 dq12 dq5 dq4 vcc dq11 dq3 dq10 dq2 dq1 dq9 dq8 dq0 oe# vss ce# a0 absolute maximun ratings* parameter symbol rating unit voltage on v cc relative to v ss v t1 -0.5 to 4.6 v voltage on any other pin relative to v ss v t2 -0.5 to v cc +0.5 v operating temperature t a 0 to 70(c grade) -40 to 85(i grade) storage temperature t stg -65 to 150 power dissipation p d 1 w dc output current i out 50 ma *stresses greater than those listed under ?absolute maximum ratings ? may cause permanent damage to the device. this is a stress rating only and functional operation of the device or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to the absolute maximum rating conditions for extended period may affect device reliabil ity.
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 3 ? truth table mode ce# ce2 oe# we# lb# ub# i/o operation supply current dq0-dq7 dq8-dq15 standby h x x x l x x x x x x x x x h x x h high ? z high ? z high ? z high ? z high ? z high ? z i sb ,i sb1 output disable l l h h h h h h l x x l high ? z high ? z high ? z high ? z i cc ,i cc1 read l l l h h h l l l h h h l h l h l l d out high ? z d out high ? z d out d out i cc ,i cc1 write l l l h h h x x x l l l l h l h l l d in high ? z d in high ? z d in d in i cc ,i cc1 note: h = v ih , l = v il , x = don't care. dc electrical characteristics parameter symbol test condition min. typ. * 4 max. unit supply voltage v cc 2.7 3.0 3.6 v input high voltage v ih *1 2.2 - v cc +0.3 v input low voltage v il *2 - 0.2 - 0.6 v input leakage current i li v cc R v in R v ss - 1 - 1 a output leakage current i lo v cc R v out R v ss output disabled - 1 - 1 a output high voltage v oh i oh = -1m a 2.2 2.7 - v output low voltage v ol i ol = 2m a - - 0.4 v average operating power supply current i cc cycle time = min. ce# = v il and ce2 = v ih i i/o = 0ma other pins at v il or v ih - 55 - 45 60 ma - 70 - 30 45 ma i cc1 cycle time = 1 s ce# Q 0.2v and ce2 R v cc -0.2v i i/o = 0ma other pins at 0.2v or v cc -0.2v - 8 16 ma standby power supply current i sb ce# = v ih or ce2 = v il other pins at v il or v ih - 0.3 2 ma i sb1 ce# v R cc -0.2v or ce2 Q 0.2v other pins at 0.2v or v cc -0.2v sl *5 sli *5 25 - 4 10 a 40 - 4 10 a sl - 4 30 a sli - 4 40 a notes: 1. v ih (max) = v cc + 3.0v for pulse width less than 10ns. 2. v il (min) = v ss - 3.0v for pulse width less than 10ns. 3. over/undershoot specifications are characterized, not 100% tested. 4. typical values are included for reference only and are not guaranteed or tested. typical values are measured at v cc = v cc (typ.) and t a = 25 5. this parameter is measured at vcc = 3.0v
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 4 ? capacitance (t a = 25 , f = 1.0mhz) parameter symbol min. ma x unit input capacitance c in - 6 pf input/output capacitance c i/o - 8 pf note : these parameters are guaranteed by devic e characterization, but not production tested. ac test conditions input pulse levels 0.2v to v cc -0.2v input rise and fall times 3ns input and output timing reference levels 1.5v output load c l = 30pf + 1ttl, i oh / i ol = -1ma/2m a ac electrical characteristics (1) read cycle parameter sym. ly62l102516a-55 ly62l102516a-70 unit min. max. min. max. read cycle time t rc 55 - 70 - ns a ddress access time t aa - 55 - 70 ns chip enable access time t ace - 55 - 70 ns output enable access time t oe - 30 - 35 ns chip enable to output in low-z t clz * 10 - 10 - ns output enable to output in low-z t olz * 5 - 5 - ns chip disable to output in high-z t chz * - 20 - 25 ns output disable to output in high-z t ohz * - 20 - 25 ns output hold from address change t oh 10 - 10 - ns lb#, ub# a ccess time t ba - 55 - 70 ns lb#, ub# to high-z output t bhz * - 25 - 30 ns lb#, ub# to low-z output t blz * 10 - 10 - ns (2) write cycle parameter sym. ly62l102516a-55 ly62l102516a-70 unit min. max. min. max. write cycle time t wc 55 - 70 - ns a ddress valid to end of write t aw 50 - 60 - ns chip enable to end of write t cw 50 - 60 - ns a ddress set-up time t as 0-0- ns write pulse width t wp 45 - 55 - ns write recovery time t wr 0-0- ns data to write time overlap t dw 25 - 30 - ns data hold from end of write time t dh 0-0- ns output active from end of write t ow * 5-5- ns write to output in high-z t whz * - 20 - 25 ns lb#, ub# valid to end of write t bw 45 - 60 - ns *these parameters are guaranteed by device characterization, but not production tested.
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 5 ? timing waveforms read cycle 1 (address controlled) (1,2) dout data valid t oh t aa address t rc previous data valid read cycle 2 (ce# and ce2 and oe# controlled) (1,3,4,5) dout data valid high-z high-z t clz t olz t chz t ohz t oh oe# t oe lb#,ub# t bhz t ace t ba t blz ce# t aa address t rc ce2 notes : 1.we#is high for read cycle. 2.device is continuously selected oe# = low, ce# = low, ce2 = high, lb# or ub# = low . 3.address must be valid prior to or coincident with ce# = low, ce2 = high, lb# or ub# = low transition; otherwise t aa is the limiting parameter. 4.t clz , t blz, t olz , t chz, t bhz and t ohz are specified with c l = 5pf. transition is measured 500mv from steady state. 5.at any given temperature and voltage condition, t chz is less than t clz , t bhz is less than t blz , t ohz is less than t olz.
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 6 ? write cycle 1 (we# controlled) (1,2,3,5,6) dout din data valid t dw t dh (4) high-z t whz we# t wp t cw t wr t as (4) t ow lb#,ub# t bw ce# t aw address t wc ce2 write cycle 2 (ce# and ce2 controlled) (1,2,5,6) dout din data valid t dw t dh (4) high-z t whz we# lb#,ub# t cw t wp t bw ce# address t wr t as t aw t wc ce2
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 7 ? write cycle 3 (lb# ,ub# controlled) (1,2,5,6) dout din data valid t dw t dh (4) high-z t whz we# lb#,ub# t cw t as t wp t bw ce# address t wr t aw t wc ce2 notes : 1.we#,ce#, lb#, ub# must be high or ce2 must be low during all address transitions. 2.a write occurs during the overlap of a low ce#, high ce2, low we#, lb# or ub# = low. 3.during a we# controlled write cycle with oe# low, t wp must be greater than t whz + t dw to allow the drivers to turn off and data to be placed on the bus. 4.during this period, i/o pins are in the out put state, and input signals must not be applied. 5.if the ce#, lb#, ub# low transition and ce2 high transition o ccurs simultaneously with or after we# low transition, the outpu ts remain in a high impedance state. 6.t ow and t whz are specified with c l = 5pf. transition is measured 500mv from steady state.
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 8 ? data retention characteristics parameter symbol test cond ition min. typ. max. unit v cc for data retention v dr ce# R v cc - 0.2v or ce2 Q 0.2v 1.2 - 3.6 v data retention current i dr v cc = 1.2v ce# R v cc -0.2v or ce2 Q 0.2 v other pins at 0.2v or v cc -0.2v sl sli 25 - 2.5 10 a 40 - 2.5 10 a sl - 2.5 30 a sli - 2.5 40 a chip disable to data retention time t cdr see data retention waveforms (below) 0 - - ns recovery time t r t rc * - - ns t rc * = read cycle time data retention waveform low vcc data retention waveform (1) (ce# controlled) vcc ce# v dr R 1.2v ce# v R cc-0.2v vcc(min.) v ih t r t cdr v ih vcc(min.) low vcc data retention waveform (2) (ce2 controlled) vcc ce2 v dr R 1.2v ce2 Q 0.2v vcc(min.) v il t r t cdr v il vcc(min.) low vcc data retention waveform (3) (lb#, ub# controlled) vcc lb#,ub# v dr R 1.2v lb#,ub# v R cc-0.2v vcc(min.) v ih t r t cdr v ih vcc(min.)
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 9 ? package outline dimension 48-pin 12mm x 20mm tsop-i package outline dimension
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 10 ? ordering information ly62l102516a u v - ww xx y z z : packing type y : temperature range u : package type ww : access time(speed) xx : power type v : lead information l : 48-pin 12 mm x 20 mm tsop-i l : green package sl : special ultra low power blank : (commercial) 0c ~ 70c i : (industrial) -40c ~ +85c blank : tube or tray tray : 48-pin 12 mm x 20 mm tsop-i t : tape reel
ly62l102516a rev. 1.0 1024k x 16 bit low power cmos sram lyontek inc. reserves the rights to change the specificati ons and products without notice. 5f, no. 2, industry e. rd. ix, science-ba sed industrial park, hsinchu 300, taiwan. tel: 886-3-6668838 fax: 886-3-6668836 11 ? this page is left blank intentionally.

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