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TMP92CZ26A
92CZ26A-132
Port 9 register
7 6 5 4 3 2 1 0
bit Symbol
P97
P96
P92
P91
P90
Read/Write R
R/W
After reset
Data from external
port
Data from external port (Output
latch register is set to “1”)
Port 9 control register
7 6 5 4 3 2 1 0
bit Symbol
P92C
P91C
P90C
Read/Write
W
After reset
0
0
0
Function
Refer to following table
Port 9 function register
7 6 5 4 3 2 1 0
bit
Symbol P96F
P92F P90F
Read/Write
W W W
After
reset
0 0 0
Function
0:
Input
port
1: INT4
Refer to
following
table
Refer to
following
table
Port 9 Function registers 2
7 6 5 4 3 2 1 0
bit Symbol
−
−
P90F2
Read/Write
W
W
W
After
reset
0 0 0
Function
Always
write “0”
Always
write “0”
0:CMOS
1:
open-drain
Port 9 drive register
7 6 5 4 3 2 1 0
bit Symbol
P97D
P96D
P92D
P91D
P90D
Read/Write R/W
R/W
After reset
1
1
1
1
1
Function
Input/Output buffer drive register for standby mode
Note 1: Read-modify-write is prohibited for P9CR, P9FC and P9FC2.
Note 2: When setting P96 pin to INT4 input, set P9DR<P96D> to “0” (prohibit input), and when driving P96 pin to “0”, execute
HALT instruction. This setting generates INT4 inside. If don’t using external interrupt in HALT condition, set like an
interrupt don’t generated. (e.g. change port setting)
Figure 3.7.17 Register for Port 9
P9FC
(0027H)
P9
(0024H)
P9CR
(0026H)
P9FC2
(0025H)
P9DR
(0089H)
<P90C>
<P90F>
0 1
0 Input
port
Output port
1
Don’t
setting
TXD0
Output
P90 setting
<P91C>
0 1
Input
port
RXD0
Input
Output port
P91 setting
<P92C>
<P92F>
0 1
0
Input port,
0
CTS Input
Input port,
0
CTS Input
1
Don’t setting
Don’t setting
P92 setting