Pin Functions - Renesas H8/38024 Hardware Manual

8.4.3

Pin Functions

Table 8.9 shows the port 4 pin functions.
Table 8.9 Port 4 Pin Functions
Pin Pin Functions and Selection Method
P4 /IRQ The pin function depends on bit IRQ0 in PMR2.
3 0
P4 /TXD The pin function depends on bit TE in SCR3, bit SPC32 in SPCR, and bit PCR4
2 32
in PCR4.
P4 /RXD The pin function depends on bit RE in SCR3 and bit PCR4
1 32
P4 /SCK The pin function depends on bit CKE1 and CKE0 in SCR3, bit COM in SMR3,
0 32
and bit PCR4
IRQ0
Pin function
SPC32
TE
PCR4
2
Pin function P4
RE
PCR4
1
Pin function P4
in PCR4.
0
CKE1
CKE0
COM
PCR4
0
Pin function P4
0
0
P4 input pin
3
0
0
0
input pin P4
2 2
0
0
input pin P4
1 1
0
0
0
0 1
input pin P4 output pin SCK
0
Rev. 6.00, 08/04, page 205 of 628
1
IRQ
input pin
0
1
output pin TXD
32
in PCR4.
1
1
output pin RXD
32
1
1 *
*
output SCK
32
pin
*: Don't care
2
1
1
*
output pin
1
*
input pin
1
*
*
*
input
32
pin