Datasheet

Section 10 I/O Ports
R01UH0309EJ0500 Rev. 5.00 Page 587 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
• P60/IRQ8-A/DREQ0/TMRI0-A
The pin function is switched as shown below according to the combination of bits TMRS and
USBDRQE in PFCR3, bit P60DDR, and bit ITS8 in ITSR of the interrupt controller.
P60DDR 0 1
P60 input P60 output
TMRI0-A input*
1
*
3.
DREQ0 input*
4
Pin function
IRQ8-A interrupt input*
2
Notes: 1. When used as the counter reset input pin for the TMR, both the CCLR1 and CCLR0 bits
in TCR_0 should be set to 1 after the TMRS bit in PFCR3 is set to 0.
2. IRQ8-A input when the ITS8 bit in ITSR is 0.
3. When using as TMRI0-A input, set TMRS in PFCR3 to 0 before other register setting.
4. When using as DREQ0 input, set USBDRQE in PFCR3 to 0 before other register
setting. When USBDRQE is 1, use of the DREQ0 signal from the DREQ0 input pin is
not allowed.