HD64F2168 Datasheet, PDF (225/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

8.1.4 Pin Functions
The relationship between register setting values and pin functions are as follows in each operating
mode.
Extended Mode (EXPE = 1):
The function of port 1 pins is switched as shown below according to the P1nDDR bit.
P1nDDR
ADMXE
ABW,
ABW256,
ABWCP
Pin function
[Legend]
n = 7 to 0
0
0
1

Either bit is 0 All 1
(8/16 bit bus) (8 bit bus)
P1n input pin AD7 to AD0
input/output
pin
P1n input
pin
1
0
1

Either bit is 0 All 1
(8 bit bus)
A7 to A0
output pin
Setting P1n output
prohibited
pin
Single-Chip Mode (EXPE = 0):
The function of port 1 pins is switched as shown below according to the combination of the OEn
bit and P1nDDR bit in PWOERA of PWM and the PWMS bit in PTCNT0.
P1nDDR
PWMS
OEn
Pin function
[Legend]
n = 7 to 0
0


P1n input pin
1
1
0
1
0

P1n output pin
1
0
1
PWn output pin
Rev. 3.00, 03/04, page 185 of 830