Port E Pull-Up Control Register (Pepcr); Pin Functions - Renesas H8S/2368 Series Hardware Manual

9.12.4

Port E Pull-up Control Register (PEPCR)

PEPCR controls on/off states of the input pull-up MOS of port E. PEPCR is valid in 8-bit bus
mode.
Bit Bit Name Initial Value
7 PE7PCR
6 PE6PCR
5 PE5PCR
4 PE4PCR
3 PE3PCR
2 PE2PCR
1 PE1PCR
0 PE0PCR
9.12.5

Pin Functions

Port E pins also function as the pins for data I/Os. The correspondence between the register
specification and the pin functions is shown below.
•
PE7/D7, PE6/D6, PE5/D5, PE4/D4, PE3/D3, PE2/D2, PE1/D1, PE0/D0
The pin function is switched as shown below according to the operating mode, bus mode, bit
EXPE, and bit PEDDR.
Operating
mode
Bus mode
EXPE
PEDDR 0
Pin function PE input PE output Data I/O PE input PE output PE input PE output Data I/O
R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
1, 2, 4
All areas At least
8-bit space one area
16-bit
space
— —
1 —
Description
When PEDDR = 0 (input port), the input pull-up
MOS of the input pin is on when the corresponding
bit is set to 1.
—
0
0 1
Rev. 2.00, 05/03, page 361 of 820
7
All areas At least
8-bit space one area
16-bit
space
1
0 1 —
1