HD64336900G Datasheet, PDF (142/408 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

9.1.4 Port Pull-Up Control Register 1 (PUCR1)
PUCR1 controls the pull-up MOS in bit units of the pins set as the input ports.
Initial
Bit
Bit Name Value R/W Description
7
PUCR17 0
R/W Only bits for which PCR1 is cleared are valid.
6

1
5

1
4
PUCR14 0
3

1
2

1

The pull-up MOS of the P17 and P14 pins enter the on-

state when these bits are set to 1, while they enter the
off-state when these bits are cleared to 0.
R/W _{Bits 6, 5, and 3 to 0 are reserved. These bits are always}

read as 1.

1

0

1

1

9.1.5 Pin Functions
The correspondence between the register specification and the port functions is shown below.
• P17/IRQ3/TRGV pin
Register PMR1
Bit Name IRQ3
Setting value 0
1
[Legend]
X: Don't care
PCR1
PCR17
0
1
X
Pin Function
P17 input pin
P17 output pin
IRQ3 input/TRGV input pin
• P14/IRQ0 pin
Register PMR1
Bit Name IRQ0
Setting value 0
1
[Legend]
X: Don't care
PCR1
PCR14
0
1
X
Pin Function
P14 input pin
P14 output pin
IRQ0 input pin
Rev. 1.00, 11/03, page 114 of 376