Rev. 1.0, 09/01, page 462 of 904
10.10.4
Port B MOS Pull-Up Control Register (PBPCR)
PBPCR controls the on/off state of MOS input pull-up of port B. PBPCR is valid in modes 4 and
7.
Bit
Bit Name
Initial Value
R/W
Description
7
PB7PCR
0
R/W
6
PB6PCR
0
R/W
5
PB5PCR
0
R/W
4
PB4PCR
0
R/W
3
PB3PCR
0
R/W
2
PB2PCR
0
R/W
1
PB1PCR
0
R/W
0
PB0PCR
0
R/W
When PBDDR = 0 (input port), setting the
corresponding bit to 1 turns on the MOS input pull-up
for that pin.
10.10.5
Pin Functions
Port B pins also function as the pins for address outputs. The correspondence between the register
specification and the pin functions is shown below.
PB7/A15, PB6/A14, PB5/A13, PB4/A12, PB3/A11, PB2/A10, PB1/A9, PB0/A8
The pin function is switched as shown below according to the operating mode, bit EXPE, and bit
PBDDR.
Operating
mode
1, 2, 5,
6
4
7
EXPE
—
—
0
1
PBDDR
—
0
1
0
1
0
1
Pin function
Address
output
PB
input
Address
output
PB
input
PB
output
PB
input
Address
output
Содержание H8S/2376 F-ZTAT
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