r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 584

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
• P51/RxD2/IRQ1-A/SCL3/BREQ-B/PO2-B/TIOCC3-B/TMCI0-B
• Modes 1, 2, 4, and 7 (EXPE = 1)
BRLE
BREQS
ICE
TPU channel 3
settings
RE
P51DDR
NDER2
Pin function
Rev. 1.00 Sep. 19, 2008 Page 554 of 1342
REJ09B0467-0100
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, bit BRLE in BCR of the bus controller, bit ICE in ICCRA_3 of I
to MD0 in TMDR_3 of TPU, bits IOC3 to IOC0 in TIORL_3, TPU channel 3 settings by bits
CCLR2 to CCLR0 in TCR_3, bit NDER2 in NDERL of PPG, bit RE in SCR_2 of SCI, bit
P51DDR, and bit ITS1 in ITSR of the interrupt controller.
(1) in table
TIOCC3-B
output*
below



3
P51 input

0
BRLE = 0 or BRLE = 1 and BREQS = 0
P51 output
(2) in table below
0
0
1
0
IRQ1-A interrupt input*
TMCI0-B input*
output*
PO2-B
TIOCC3-B input*
1
1
2
4
RxD2 input
1


1
3
SCL3 I/O




1
2
C, bits MD3
BREQS = 1
BRLE = 1
BREQ-B
input
and




