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MSM80C154S/83C154S/85C154HVS
204
Table 5-5 Port 3 CPU control pin function table
PORT3 PORT 3 PIN ALTERNATE FUNCTION
P3.0 RXD [SERIAL INPUT PORT]
P3.1 TXD [SERIAL OUTPUT PORT]
P3.2 INT0 [EXTERNAL INTERRUPT 0]
P3.3 INT1 [EXTERNAL INTERRUPT 1]
P3.4 T0 [TIMER/COUNTER 0 CLOCK]
P3.5
T1 [TIMER/COUNTER 1 CLOCK]
P3.6 WR [EXTERNAL DATA MEMORY WRITE STROBE]
P3.7 RD [EXTERNAL DATA MEMORY READ STROBE]
HPDI [HARD POWER DOWN INPUT]
Table 5-6 Port 3 pin table
Accumulator bit
1 ACC.0
2 ACC.1
3 ACC.2
4 ACC.3
5 ACC.4
6 ACC.5
7 ACC.6
8 ACC.7
PORT3
P3.0 RXD
P3.1 TXD
P3.2 INT0
P3.3 INT1
P3.4 T0
P3.5 T1/HDPI
P3.6 WR
P3.7 RD
Control