Pin Functions - Renesas H8S/2319 series Hardware Manual

Port B MOS Pull-Up Control Register (PBPCR)
Bit : 7
PB7PCR PB6PCR PB5PCR PB4PCR PB3PCR PB2PCR PB1PCR PB0PCR
Initial value : 0
R/W : R/W
PBPCR is an 8-bit readable/writable register that controls the MOS input pull-up function
incorporated into port B on an individual bit basis.
When PBDDR bits are cleared to 0 (input port setting) in mode 6 or 7, setting the corresponding
PBPCR bits to 1 turns on the MOS input pull-up for the corresponding pins.
PBPCR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
8.7.3

Pin Functions

Modes 4 and 5: In modes 4 and 5, port B pins are automatically designated as address outputs.
Port B pin functions in modes 4 and 5 are shown in figure 8-10.
6 5
0 0
R/W R/W
Port B
Figure 8-10 Port B Pin Functions (Modes 4 and 5)
4 3
0 0
R/W R/W R/W
A15 (output)
A14 (output)
A13 (output)
A12 (output)
A11 (output)
A10 (output)
A9 (output)
A8 (output)
Rev. 5.00, 12/03, page 257 of 1088
2 1 0
0 0 0
R/W R/W