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  BL7431A 256eeprom?? ? http://www.belling.com.cn - 1 - 8/16/2006 total 4 pages wrote by ? BL7431A ? 1.2 ? cmos e 2 prom ? ic ? ( ? ) 256 e 2 prom ? ?????? ? ? 256 1 e 2 prom ??? ??????? ? e 2 prom ??? 5ms ? 5v <1ma ? 10 5 ?? 10 ???? iso/iec 7816-3? ?? ?? ????????? ?? 1 ? ??? 1 ? ? 1-a ?? m2.2 ? 1-b ?? m3.2 1 ? ?? ???? 2 ? ? 256 eeprom ???????? ??? clk i/o rst vcc gnd ? 2 ?
BL7431A 256eeprom?? ? http://www.belling.com.cn - 2 - 8/16/2006 total 4 pages wrote by BL7431A 256eeprom 256eeprom,???? 2? 2 BL7431A ??? ?? ?? ? ? ? ? ? ? fg ?? 0 ? ? fg? ?1 ? ? ? ? ? fg? ?1 1 0~15 rom rom rom ?? 2 16~23 rom prom rom ?? 3 24~63 rom prom rom 4 64 rom prom rom ?? 65~71 rom prom rom 72~79 prom eeprom rom ??? ?? 8? ?? 80~103 rom( ) eeprom rom ??? ? ?? ???? 5 104~143 rom eeprom eeprom ? 6 144 rom rom eeprom eeprom rom eeprom eeprom fg? 145~151 rom rom eeprom eeprom rom eeprom eeprom 7 152~159 rom prom eeprom eeprom prom eeprom eeprom ? ?? 8 160~183 rom rom ? eeprom eeprom rom ? eeprom eeprom ? 9 184~255 rom rom eeprom eeprom rom eeprom eeprom
BL7431A 256eeprom?? ? http://www.belling.com.cn - 3 - 8/16/2006 total 4 pages wrote by / 1 ? ??? rst ???? clk rst ?? ? 0 ? i/o ? v cc ????? 3 ? 2 ??????? rst ??? 1 ? ???? i/o ? clk ??? rst=1 ??? 0 ? 3 ? add a0 a1 a2 do0 do1 io clk rst t r t h t l t r t f t d1 t d2 t d3 t d4 ?3 ? 3 rst ? clk ?? , ?? r ? , ??? , ? ?? , ????? , ??? ? , ?? r ???? , ??? r ? ??? , ???? ,r ?? 4 ? add n n+1 n+2 io clk rst t d5 n n+1 n+1 t d6 t d7 t s t hw ?4 ? add n n+1 io clk rst t s t hw n n t d6 n t he t s t d7 ?5 ? 4 clk?0? rst r?? clk ?? 1?????? ? 5 ? 5 ? ??? ??????? ???????? ?????????? 0 ? ? ecc ? ecc ? 80 i/o ???? 104 ???? 6 ? d81 d82 d103 d80 d0 0 1 104 81 82 80 103 td8 td9 td10 ec ?? ? ec ?? 0 ec(lsb-1) ~ec(msb-1) thw rst clk address i/o ? 6 ? ??????? ? ????
BL7431A 256eeprom?? ? http://www.belling.com.cn - 4 - 8/16/2006 total 4 pages wrote by ] ? ? ? ? ?? ? ? ? ?? v cc -0.3 - 6.0 v ? v i -0.3 - 6.0 v ? t s -40 - 125 o c esd vs 4000 v p tot - - 50 mw ? ?? ? ? ? h? (i/o,clk,rst) v h 3.5 - v cc v l ? (i/o,clk,rst) v l - - 0.8 v rst,clk???? i h - - 1 ua rst,clk???? -i l - - 1 ua l i l - - 0.5 ma h i h - - 10 ua c i - - 10 pf ?? v cc 4.75 5 5.5 v ? i cc - 1 - ma ? ? ? ? ? ? ? ? ?? clk 50 khz ???? t h 10 m s ???? t l 10 m s ? t r 1 m s ?? t f 1 m s ? t r 50 m s t s 10 m s ? t hw 5 ms ? t he 5 ms


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