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SN74ACT7805 256 × 18 CLOCKED FIRST-IN, FIRST-OUT MEMORY SCAS201B – MARCH 1991 – REVISED APRIL 1998 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 logic symbol† WRTEN & RDEN & 0 21 D0 20 D1 19 D2 18 D3 17 D4 16 D5 15 D6 14 D7 12 D8 Q0 33 0 Q1 34 Q2 36 Q3 37 Q4 38 IR 28 IN RDY HF 22 HALF-FULL AF/AE 24 ALMOST FULL/EMPTY OR 29 OUT RDY Q5 40 Q6 41 Q7 42 Q8 43 Data 1 Φ FIFO 256 × 18 SN74ACT7805 11 D9 9 D10 8 D11 7 D12 6 D13 5 D14 4 D15 3 D16 17 2 D17 Q9 45 Q10 46 Q11 47 Q12 48 Q13 49 Q14 51 Q15 53 Q16 54 Q17 55 17 RESET WRTEN2 OE1 OE2 RDEN 30 EN1 & 56 PEN RESET 1 25 WRTCLK WRTCLK Data 27 WRTEN1 26 PROGRAM ENABLE 23 31 32 RDCLK RDCLK † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. |
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