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| ***** C-MOS 16M(1,048,576x16)-BIT DRAM -TOP VIEW17 18 19 20 23 24 25 26 27 28 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 UPD4218160LE-60(1/2) IL16 VDD 1 (+5 V) I/O1 2 I/O2 3 I/O3 4 I/O4 5 VDD 6 (+5 V) I/O5 7 I/O6 8 I/O7 9 I/O8 10 11 NC 12 NC WE 13 RAS 14 15 NC 16 NC A0 17 A1 18 A2 19 A3 20 VDD 21 (+5 V) GND 42 41 I/O16 40 I/O15 39 I/O14 38 I/O13 GND 37 36 I/O12 35 I/O11 34 I/O10 33 I/O9 NC 32 31 LCAS 30 UCAS 29 OE 28 A9 27 A8 26 A7 25 A6 24 A5 23 A4 GND 22 14 30 31 13 29 RAS UCAS LCAS WE OE I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8 I/O9 I/O10 I/O11 I/O12 I/O13 I/O14 I/O15 I/O16 2 3 4 5 7 8 9 10 33 34 35 36 38 39 40 41 INPUT A0-A9 RAS UCAS LCAS WE OE ; ; ; ; ; ; ADDRESS INPUTS ROW ADDRESS STROBE COLUMN ADDRESS STROBE(UPPER) COLUMN ADDRESS STROBE(LOWER) WRITE ENABLE OUTPUT ENABLE INPUT/OUTPUT I/O1-I/O16 ; DATA INPUTS/OUTPUTS UPD4218160LE-60(2/2) 29 14 RAS 31 LCAS 30 UCAS 13 WE LOWER BYTE CONTROL UPPER BYTE CONTROL CAS before RAS COUNTER DATA INPUT BUFFER DATA OUTPUT BUFFER OE CLOCK GENERATOR 2-5, 7-10 I/O1-I/O8 (LOWER BYTE) VDD GND 1,6,21 22,37,42 ROW DECODER MEMORY CELL ARRAY (1024 x 1024 x 16) 17-20, 23-28 ADDRESS ROW ADDRESS BUFFER COLUMN ADDRESS BUFFER DATA OUTPUT BUFFER SENSE AMPLIFIER x 16 33-36, 38-41 I/O9-I/O16 (UPPER BYTE) COLUMN DECODER DATA INPUT BUFFER |
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