257
In modes 4 and 7, when a PBDDR bit is cleared to 0 (input port setting), setting the corresponding
PBPCR bit to 1 turns on the MOS input pull-up for the corresponding pin.
PBPCR is initialized to H'00 by a reset and in hardware standby mode. It retains its prior state in
software standby mode.
5.11.3
Pin Functions
Port B pins also function as address outputs. Port B pin functions are shown in table 5.21.
Table 5.21
Port B Pin Functions
Pin
Selection Method and Pin Functions
PB7/A15
PB6/A14
The pin function is switched as shown below according to the operating mode, bit
EXPE, and bit PBDDR.
PB5/A13
PB4/A12
Operating
mode
1, 2, 5,
6
4
7
PB3/A11
EXPE
—
—
0
1
PB2/A10
PBDDR
—
0
1
0
1
0
1
PB1/A9
PB0/A8
Pin function
Address
output
pin
PB
input
pin
Address
output
pin
PB
input
pin
PB
output
pin
PB
input
pin
Address
output
pin
Summary of Contents for H8S/2670
Page 5: ......
Page 9: ......
Page 199: ...182 ...
Page 361: ...344 ...
Page 393: ...376 ...
Page 647: ...630 ...