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