HD6475328-CP10 Datasheet, PDF (164/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

Table 9-4 Port 1 Pin Functions in Single-Chip Modes
Pin
P17 / TMO
Selection of Pin Functions
The function depends on output select bits 3 to 0 (OS3 to OS0) of the 8-bit timer
control/status register (TCSR) and on the P17DDR bit as follows:
OS3 to OS0
P17DDR
Pin function
All four bits are “0”
0
1
P17 input P17 output
At least one bit is “1”
0
1
TMO output
P16 / IRQ1 The function depends on the IRQ1E bit and the P16DDR bit as follows:
IRQ1E
P16DDR
Pin function
0
0
1
P16 input P16 output
1
0
1
IRQ1 input
P15 / IRQ0 The function depends on the IRQ0E bit and the P15DDR bit as follows:
IRQ0E
P15DDR
Pin function
0
0
1
P15 input P15 output
1
0
1
IRQ0 input
P14
P14DDR
0
1
Pin function Input
Output
P13
P13DDR
0
1
Pin function Input
Output
147