Toshiba TMP91C815F Data Book page 76

7
PB
bit Symbol
(0022H)
Read/Write
After Reset
7
PBCR
bit Symbol
(0024H)
Read/Write
After Reset
7
bit Symbol
PBFC
(0025H)
Read/Write
After Reset
Function
(note1): Read-Modify-Write is prohibited for the registers PBCR and PBFC.
(note2): PB0/TA0IN pin does not have a register changing PORT/FUNCTION.
For example, when it is used as an input port, the input signal is inputted to
8 bit timer.
Port B Register
6 5 4
PB6 PB5 PB4
1 1 1
Port B Control Register
6 5 4
PB6C PB5C PB4C
0: IN 1: OUT
Port B Function Register
6 5 4
PB6F PB5F PB4F
0: PORT 0: PORT 0: PORT
1: INT3 1: INT2 1:
INT1
Figure 3.5.25 Register for Port B
91C815-73
3 2
PB3 PB2 PB1
R/W
Input Mode
1 1
3 2
PB3C PB2C PB1C
W
0
3 2
PB3F PB2F PB1F
W
0
0: PORT 0: PORT 0: PORT
1: INT0 1: 1:
TA3OUT TA1OUT
TMP91C815
1 0
PB0
1 1
1 0
PB0C
1 0