TMP91C824
91C824-60
Port 5 Register
7
6
5
4
3
2
1
0
bit Symbol
P56
P55
P54
Read/Write
R/W
Input mode (With Pull-up)
After reset
1
1
1
Port 5 Control Register
7
6
5
4
3
2
1
0
bit Symbol
P56C
P55C
P54C
Read/Write
W
0
0
0
After reset
0: IN
1: OUT
Port 5 function register
7
6
5
4
3
2
1
0
bit Symbol
P55F
P54F
Read/Write
W
After reset
0
0
Function
0: PORT
1: BUSAK
0: PORT
1:BUSRQ
P5FC
(000BH)
P5
(000DH)
II/O setting
0
Input
1
Output
(note1): Read-modify-write is prohibited for register P5CR,P5FC.
(note2): When port5 is used in the input mode, P5 register controls the built-in
pull-up resistor. Read-modify-write is prohibited in the input mode or the
I/O mode. Setting the built-in pull-up resistor may be depended on the
States of the input pin.
(note3): When P56 pin is used as a /WAIT pin ,set P5CR<P56C> to “0” and Chip
Select/WAIT control register <BnW2:0> to “010”
P5CR
(000AH)
Figure 3.5.6 Registers for Port 5