TMP91C824
91C824-71
2008-02-20
Port B Register
7 6 5 4 3 2 1 0
Bit
symbol
PB6 PB5 PB4 PB3 PB2 PB1 PB0
Read/Write
R/W
After reset
Data from external port (Output latch register is set to “1”.)
Port B Control Register
7 6 5 4 3 2 1 0
Bit
symbol
PB6C PB5C PB4C PB3C PB2C PB1C PB0C
Read/Write
W
After
reset
0 0 0 0 0 0 0
Function
0: Input 1: Output
Port B Function Register
7 6 5 4 3 2 1 0
Bit
symbol
PB6F PB5F PB4F PB3F PB2F PB1F
Read/Write
W
After
reset
0 0 0 0 0 0
Function
0:
Port
1: INT3
0: Port
1: INT2
0: Port
1:
INT1
0: Port
1: INT0
0: Port
1:
TA3OUT
0: Port
1:
TA1OUT
Note 1: Read-Modify-Write is prohibited for the registers PBCR and PBFC.
Note 2: 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.
Figure 3.5.18 Register for Port B
PB
(0022H)
PBFC
(0025H)
PBCR
(0024H)