Microcontroller User's Manual

8XC196L X SUPPLEMENT
A-2
Table A-1. 87C196LA Signals Arranged by Functional Categories
Addr & Data Input/Output (Cont’d) Program Control Processor Control
Name Pin Name Pin Name Pin Name Pin
AD0 22 P2.1 / RXD 28
AINC# 30 EA# 24
AD1 21 P2.2 29 CPVER 31
EXTINT 29
AD2 20
P2.4 30 PACT# 32 PLLEN 6
AD3 19
P2.6 31 PALE# 28 RESET# 23
AD4 18
P2.7 32 PBUS.0 22 XTAL1 52
AD5 17 P3.0 22 PBUS.1 21
XTAL2 51
AD6 16
P3.1 21 PBUS.2 20
AD7 15 P3.2 20 PBUS.3 19 Bus Cont & Status
AD8 14 P3.3 19 PBUS.4 18
Name Pin
AD9 13 P3.4 18 PBUS.5 17
ADV# / ALE 2
AD10 12 P3.5 17 PBUS.6 16
CLKOUT 32
AD11 11 P3.6 16 PBUS.7
15 RD# 5
AD12 10 P3.7 15 PBUS.8
14 WR# / WRL# 6
AD13 9 P4.0 14 PBUS.9
13
AD14 8 P4.1 13 PBUS.10 12 Power & Ground
AD15 7 P4.2 12 PBUS.11
11 Name Pin
P4.3 11 PBUS.12
10 ANGND 39
Input/Output P4.4 10 PBUS.13 9
V
CC
26
Name Pin P4.5 9 PBUS.14 8
V
PP
4
P0.2 / ACH2 33 P4.6 8 PBUS.15 7
V
REF
40
P0.3 / ACH3 34 P4.7 7 PMODE.0 35
V
SS
3
P0.4 / ACH4 35
P5.0 2 PMODE.1 36 V
SS1
1
P0.5 / ACH5 36
P5.2 6 PMODE.2 37 V
SS1
25
P0.6 / ACH6 37
P5.3 5 PMODE.3 38
P0.7 / ACH7 38 P6.0 / EPA8 / COMP0 45 PROG# 29
P1.0 / EPA0 / T2CLK 44 P6.1 / EPA9 / COMP1 46 PVER 27
P1.1 / EPA1 43 P6.4 / SC0 47
P1.2 / EPA2 / T2DIR 42 P6.5 / SD0 48
P1.3 / EPA3 41 P6.6 / SC1 49
P2.0 / TXD 27 P6.7 / SD1 50