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8XC251TP Datasheet(PDF) 11 Page - Intel Corporation |
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8XC251TP Datasheet(HTML) 11 Page - Intel Corporation |
11 / 34 page 8xC251TA/TB/TP/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER ADVANCE INFORMATION 7 Table 5. 8xC251TA/TB/TP/TQ PLCC/DIP Pin Assignments Arranged by Functional Category Address & Data Input/Output Name PLCC DIP Name PLCC DIP AD0/P0.0 43 39 P1.0/T2 2 1 AD1/P0.1 42 38 P1.1/T2EX 3 2 AD2/P0.2 41 37 P1.2/ECI/RXD1 4 3 AD3/P0.3 40 36 P1.3/CEX0/TXD1 5 4 AD4/P0.4 39 35 P1.4/CEX1 6 5 AD5/P0.5 38 34 P1.5/CEX2 7 6 AD6/P0.6 37 33 P1.6/CEX3/WAIT# 8 7 AD7/P0.7 36 32 P1.7/CEX4/A17/WCLK 9 8 A8/P2.0 24 21 P3.0/RXD 11 10 A9/P2.1 25 22 P3.1/TXD 13 11 A10/P2.2 26 23 P3.4/T0 16 14 A11/P2.3 27 24 P3.5/T1 17 15 A12/P2.4 28 25 A13/P2.5 29 26 Power & Ground A14/P2.6 30 27 Name PLCC DIP A15/P2.7 31 28 VCC 44 40 P3.7/RD#/A16 19 17 VCC2 12 P1.7/CEX4/A17/WCLK 9 8 VSS 22 20 VSS1 1 VSS2 23, 34 Processor Control EA# 35 31 Name PLCC DIP P3.2/INT0# 14 12 Bus Control & Status P3.3/INT1# 15 13 Name PLCC DIP EA# 35 31 P3.6/WR# 18 16 RST 10 9 P3.7/RD#/A16 19 17 XTAL1 21 18 ALE 33 30 XTAL2 20 19 PSEN# 32 29 |
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