Table of Contents
Advertisement
7
PZ
Bit symbol
(007DH)
Read/Write
After reset
Function
7
Bit symbol
PZCR
Read/Write
(007EH)
After reset
Function
7
−
Bit symbol
PZFC
(007FH)
Read/Write
W
After reset
0
Function
Always
write 0
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.
Port Z Register
6
5
4
Port Z Control Register
6
5
4
Port Z Function Register
6
5
4
Figure 3.5.28 Port Register for Port Z
91C824-79
3
2
1
PZ3
PZ2
R/W
Data from external port
(Output latch register
is set to "1".)
0(Output latch register)
: Pull-up resistor OFF
1(Output latch register)
: Pull-up resistor ON
3
2
1
PZ3C
PZ2C
W
0
0
0: Input
1: Output
3
2
1
PZ3F
PZ2F
W
0
0
0: Port
0: Port
1: R/
1:
W
HWR
setting
HWR
PZFC<PZ2F> 1
PZCR<PZ2C> 1
TMP91C824
0
RDE
R/W
1
0
0
2008-02-20
Advertisement
Table of Contents
