TMP91C824
91C824-77
Port Z Register
7
6
5
4
3
2
1
0
bit Symbol
PZ3
PZ2
RDE
Read/Write
R/W
Input mode (pulled-up)
After reset
1
1
1
Port Z Control Register
7
6
5
4
3
2
1
0
bit Symbol
PZ3C
PZ2C
Read/Write
W
0
0
After reset
0: IN 1: OUT
Port Z Function Register
7
6
5
4
3
2
1
0
Bit Symbol
PZ3F
PZ2F
Read/Write
W
After reset
0
0
Function
(Note)
Always
fixed to “0”
0: PORT
1: R/W
0: PORT
1:/HWR
PZFC
(007FH)
PZ
(007DH)
Note 1: Read-Modify-write is prohibited for registers PZCR and PZFC.
Note 2: When Port Z is used in Input Mode, the PZ register controls the built-in pull-up resistor. Read-Modify-Write is prohibited in
Input Mode or I/O Mode. Setting the built-in pull-up resistor may be depended on the states of the input pin.
/HWR setting
PZFC<PZ2F>
1
PZCR<PZ2C> 1
PZCR
(007EH)
Figure 3.5.28 Port Register for Port Z