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| Datasheet File OCR Text: |
| ********** C-MOS 64K-BIT DUAL PORT STATIC RAM -TOP VIEW- 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 MB8441-45PFQ(1/3) IL00 NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 NC NC 52 53 54 55 56 57 58 59 60 61 62 63 64 NC NC NC VDD(+5V) VDD(+5V) GND VDD(+5V) GND GND NC 32 31 30 29 28 27 26 25 24 23 22 21 20 (VDD = +5V) PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 I/O I I I I I I I I I I I I -- -- O I/O SIGNAL A12L OEL A0L A1L A2L A3L A4L A5L A6L A7L A8L A9L NC NC I/O1L PIN NO. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 I/O I/O I/O I/O I/O I/O I/O I/O -- -- -- -- I/O I/O I/O I/O I/O SIGNAL I/O2L I/O3L I/O4L I/O5L I/O6L I/O7L I/O8L GND GND VDD GND I/O1R I/O2R I/O3R I/O4R I/O5R PIN NO. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 I/O I/O I/O I/O -- -- -- I I I I I I I I I I SIGNAL I/O6R I/O7R I/O8R NC NC NC A9R A8R A7R A6R A5R A4R A3R A2R A1R A0R PIN NO. 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 I/O I I I I O I I I -- -- I I I O I I SIGNAL A12R A11R A10R R R R R VDD VDD L L L L A10L A11L MB8441-45PFQ(2/3) 2 3 4 5 6 7 8 9 10 11 12 63 OEL A0L A1L A2L A3L A4L A5L A6L A7L A8L A9L A10L INTL 62 49 OER I/O1L I/O2L I/O3L I/O4L I/O5L I/O6L I/O7L I/O8L 16 17 18 19 20 21 22 23 A0L - A10L, A0R - A10R ; ; L, R; L, R ; I/O0L - I/O10L, I/O0R - I/O10R ; L, R ; L, R ; L, R ; ADDRESS INPUTS BUSY OUTPUT ENABLE BUSY INPUTS CHIP SELECT INPUTS DATA INPUTS/OUTPUTS INTERRUPT OUTPUTS OUTPUT ENABLE INPUTS WRITE ENABLE INPUTS 61 BUSYL 28 29 30 31 32 33 34 35 48 47 46 45 44 43 42 41 40 39 52 A0R A1R A2R A3R A4R A5R A6R A7R A8R A9R A10R I/O1R I/O2R I/O3R I/O4R I/O5R I/O6R I/O7R I/O8R INTR 53 54 BUSYR CSL 59 WEL 60 CSR 56 WER 55 MB8441-45PFQ(3/3) WEL WER WEL 60 55 WER CSL OEL 59 2 OEL OER 56 49 CSR OER I/O1L I/O2L I/O3L I/O4L I/O5L I/O6L I/O7L I/O8L 28 29 30 31 32 33 34 35 28 29 30 I/O1R I/O2R I/O3R I/O4R I/O5R I/O6R I/O7R I/O8R I/O BUFFER I/O BUFFER 31 32 33 34 35 A12L A11L A10L A9L A8L 1 64 63 12 11 50 51 A12R A11R A10R A9R A8R ROW DECODER ROW DECODER 52 39 40 A7L A6L A5L A4L A3L A2L A1L A0L 10 9 8 7 6 5 4 3 41 42 43 A7R A6R A5R A4R A3R A2R A1R A0R COLUMN DECODER 8.192 8 BIT MEMORY CELL ARRAY COLUMN DECODER 44 45 46 47 48 13 13 INTERRUPT BUSYL 61 54 BUSYR INTL 62 53 15 INTLR BE |
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