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MR82C37A-5B Datasheet(PDF) 2 Page - Intersil Corporation |
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MR82C37A-5B Datasheet(HTML) 2 Page - Intersil Corporation |
2 / 23 page 4-193 82C37A Block Diagram Pinouts 82C37A (PDIP/CERDIP) TOP VIEW 82C37A (CLCC/PLCC) TOP VIEW 13 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 17 18 19 20 IOR IOW MEMR MEMW NC READY HLDA ADSTB AEN HRQ CS CLK RESET DACK2 DACK3 DREQ3 DREQ2 DREQ1 DREQ0 (GND) VSS 28 40 39 38 37 36 35 34 33 32 31 30 29 27 26 25 24 23 22 21 A7 A6 A5 A4 EOP A3 A2 A1 A0 VCC DB0 DB1 DB2 DB3 DB4 DACK0 DACK1 DB5 DB6 DB7 14 13 12 11 10 9 8 7 17 16 15 2 5 30 35 39 38 37 36 33 34 32 31 29 4 6 3 1 40 41 42 43 44 28 27 26 25 24 23 22 21 20 19 18 CS DACK2 NC NC CLK HRQ NC A3 A2 A1 A0 VCC DB0 DB1 DB2 DB3 NC DB4 ADSTB AEN RESET HLDA A4 - A7 EOP RESET CS READY CLK AEN ADSTB MEMR MEMW IOR IOW TIMING AND CONTROL DREQ0 - HLDA HRQ DACK0 - PRIORITY ENCODER AND ROTATING PRIORITY LOGIC DACK3 4 DREQ3 4 COMMAND (8) MASK (4) REQUEST (4) MODE (4 x 6) STATUS (8) TEMPORARY (8) INTERNAL DATA BUS DECREMENTOR COUNT REG (16) TEMP WORD INC/DECREMENTOR REG (16) TEMP ADDRESS BUFFER IO 16-BIT BUS READ BUFFER ADDRESS BASE (16) WORD BASE COUNT (16) READ WRITE BUFFER ADDRESS CURRENT (16) WORD CURRENT COUNT (16) 16-BIT BUS BUFFER WRITE BUFFER READ BUFFER OUTPUT CONTROL COMMAND D0 - D1 A0 - A3 BUFFER IO |
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