User`s manual

S3F80J9 CONTROL REGISTERS
4-17
P0CONH — Port 0 Control Register (High Byte) E8H Set 1 Bank 0
Bit Identifier .7 .6 .5 .4 .3 .2 .1 .0
Reset Value
0 0 0 0 0 0 0 0
Read/Write
R/W R/W R/W R/W R/W R/W R/W R/W
Addressing Mode
Register addressing mode only
.7 and .6 P0.7/INT4 Mode Selection Bits
0 0 C-MOS input mode; interrupt on falling edges
0 1 C-MOS input mode; interrupt on rising and falling edges
1 0 Push-pull output mode
1 1 C-MOS input mode; interrupt on rising edges
.5 and .4 P0.6/INT4 Mode Selection Bits
0 0 C-MOS input mode; interrupt on falling edges
0 1 C-MOS input mode; interrupt on rising and falling edges
1 0 Push-pull output mode
1 1 C-MOS input mode; interrupt on rising edges
.3 and .2 P0.5/INT4 Mode Selection Bits
0 0 C-MOS input mode; interrupt on falling edges
0 1 C-MOS input mode; interrupt on rising and falling edges
1 0 Push-pull output mode
1 1 C-MOS input mode; interrupt on rising edges
.1 and .0 P0.4/INT4 Mode Selection Bits
0 0 C-MOS input mode; interrupt on falling edges
0 1 C-MOS input mode; interrupt on rising and falling edges
1 0 Push-pull output mode
1 1 C-MOS input mode; interrupt on rising edges
NOTES:
1. The INT4 external interrupts at the P0.7–P0.4 pins share the same interrupt level (IRQ7) and interrupt vector address
(E8H).
2. You can assign pull-up resistors to individual port 0 pins by making the appropriate settings to the P0PUR register.
(P0PUR.7–P0PUR.4)