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MT4C16270 数据表(PDF) 6 Page - Micron Technology |
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MT4C16270 数据表(HTML) 6 Page - Micron Technology |
6 / 22 page 6 MT4C16270 Micron Technology, Inc., reserves the right to change products or specifications without notice. W06.pm5 – Rev. 10/96 ©1996, Micron Technology, Inc. MT4C16270 256K x 16 DRAM TECHNOLOGY, INC. TRUTH TABLE ADDRESSES FUNCTION RAS# CASL# CASH# WE# OE# tR tC DQs NOTES Standby H H →XH→X X X X X High-Z READ: WORD L L L H L ROW COL Data-Out READ: LOWER BYTE L L H H L ROW COL Lower Byte, Data-Out Upper Byte, High-Z READ: UPPER BYTE L H L H L ROW COL Lower Byte, High-Z Upper Byte, Data Out WRITE: WORD L L L L X ROW COL Data-In (EARLY WRITE) WRITE: LOWER L L H L X ROW COL Lower Byte, Data-In BYTE (EARLY) Upper Byte, High-Z WRITE: UPPER L H L L X ROW COL Lower Byte, High-Z BYTE (EARLY) Upper Byte, Data-In READ WRITE L L L H →LL→H ROW COL Data-Out, Data-In 1, 2 EDO-PAGE- 1st Cycle L H →LH→L H L ROW COL Data-Out 2 MODE READ 2nd Cycle L H →LH→L H L n/a COL Data-Out 2 Any Cycle L L →HL→H H L n/a n/a Data-Out 2 EDO-PAGE- 1st Cycle L H →LH→L L X ROW COL Data-In 1 MODE WRITE 2nd Cycle L H →LH→L L X n/a COL Data-In 1 EDO- 1st Cycle L H →LH→LH→LL→H ROW COL Data-Out, Data-In 1, 2 PAGE-MODE 2nd Cycle L H →LH→LH→LL→H n/a COL Data-Out, Data-In 1, 2 READ-WRITE HIDDEN READ L →H→L L L H L ROW COL Data-Out 2 REFRESH WRITE L →H→L L L L X ROW COL Data-In 1, 3 RAS#-ONLY REFRESH L H H X X ROW n/a High-Z CBR REFRESH H →L L L X X X X High-Z 4 NOTE: 1. These WRITE cycles may also be BYTE WRITE cycles (either CASL# or CASH# active). 2. These READ cycles may also be BYTE READ cycles (either CASL# or CASH# active). 3. EARLY WRITE only. 4. At least one of the two CAS# signals must be active (CASL# or CASH#). |
类似零件编号 - MT4C16270 |
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类似说明 - MT4C16270 |
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