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| Datasheet File OCR Text: |
| ***** UPD4218160G5-60-7JF(1/2) IL16 C-MOS 16M (1,048,576 x16) BIT DYNAMIC RAM -TOP VIEW21 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 RAS LCAS UCAS OE WE I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8 I/O9 I/O10 I/O11 18 35 I/O12 I/O13 I/O14 I/O15 I/O16 2 3 4 5 7 8 9 10 41 42 43 44 46 47 48 49 1 VDD (+5V) I/O1 I/O2 I/O3 I/O4 2 3 4 5 6 I/O5 I/O6 I/O7 7 8 9 VDD (+5V) GND 50 49 I/O16 48 I/O15 47 I/O14 46 I/O13 GND 45 44 I/O12 43 I/O11 42 I/O10 41 I/O9 NC 40 22 23 24 27 28 29 30 31 32 34 33 17 I/O8 10 11 NC 15 NC 16 NC WE 17 RAS 18 19 NC 20 NC A0 A1 A2 A3 21 22 23 24 25 VDD (+5V) NC 36 35 LCAS 34 UCAS 33 OE 32 31 30 29 28 27 GND 26 A9 A8 A7 A6 A5 A4 A0 -9 I/O1-16 RAS UCAS LCAS WE OE ; ADDRESS INPUTS ; DATA INPUTS/OUTPUTS ; ROW ADDRESS STROBE INPUT ; COLUMN ADDRESS STROBE (UPPER) INPUT ; COLUMN ADDRESS STROBE (LOWER) INPUT ; WRITE ENABLE INPUT ; OUTPUT ENABLE INPUT UPD4218160G5-60-7JF(2/2) 18 35 LCAS 34 UCAS 17 RAS WE CLOCK GENERATOR LOWER BYTE CONTROL 33 OE UPPER BYTE CONTROL CAS BEFORE RAS COUNTER ROW DECODER DATA OUTPUT BUFFER I/O1 to I/O8 (LOWER BYTE) DATA INPUT BUFFER A0 to A9 ROW ADDRESS BUFFER COLUMN ADDRESS BUFFER MEMORY CELL ARRAY 1024 x 1024 x 16 SENSE AMPLIFIER x 16 DATA OUTPUT BUFFER I/O9 to I/O16 (UPPER BYTE) DATA INPUT BUFFER COLUMN DECODER |
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