Table of Contents
Advertisement
Output
Port
Function
During
Name
Name
Reset
–
D0-D7
P10-P17
D8-15
P20-P27
A16-23
–
A0-A15
RD
–
–
WR
–
P54(*1)
BUSAK
P55(*1)
–
P56(*1)
P60
CS
0
CS
1
P61
,
P62
CS
2
CS
2
A
P63
CS
3
EA24
P64
CS
2
B
EA25
P65
CS
2
C
P66
CS
2
D
P67
CS
2
E
P70
SCK
SDA
P71(*1)
SO
OPTTX0
P72(*1)
SCL
–
PB0
PB1
TA1OUT
PB2
TA3OUT
–
PB3-PB6
PC0
TXD0
–
PC1
PC2
SCLK0
PC3
TXD1
–
PC4
PC5
SCLK1
PD5
SCOUT
ALARM
PD6
MLDALM
PD7
MLDALM
HWR
PZ2(*1)
PZ3(*1)
R/W
–
X2
–
XT2
ON: The buffer is always turned on. When the bus is
released, however, output buffers for some pins are
turned off.
OFF: The buffer is always turned off.
-: No applicable
Note: Condition A/B are as follows.
SYSCR2 register setting
<DRVE>
<SELDRV>
0
0
0
1
1
0
1
1
Table 3.3.7 Output buffer State Table
When the CPU is
Operating
When
When
Used as
Used as
function
Output
Pin
Port
–
ON upon
OFF
external
write
ON
ON
ON
–
–
OFF
ON
–
ON
ON
ON
–
ON
OFF
–
ON
–
ON
–
ON
ON
OFF
–
ON
HALT mode
IDLE1
STOP
Condition B
Condition A
Condition A
Condition B
Condition B
91C824-36
Output Buffer State
In HALT mode(IDLE2)
Condition A (Note)
When
When
When
Used as
Used as
Used as
function
Output
function
Pin
Port
Pin
–
OFF
ON
OFF
ON
–
–
–
ON
OFF
–
–
ON
OFF
ON
–
–
ON
OFF
–
–
ON
OFF
–
–
ON
OFF
–
–
OFF
ON
IDLE1 : ON , STOP : output "H" level
–
*1: Port having a pull-up/pull-down resistor.
TMP91C824
In HALT mode (IDLE1/STOP)
Condition B (Note)
When
When
When
Used as
Used as
Used as
Output
function
Output
Port
Pin
Port
–
–
OFF
OFF
ON
ON
–
–
–
ON
–
ON
OFF
ON
–
ON
–
ON
–
ON
–
ON
IDLE1 : ON , STOP : High-Z
2008-02-20
Advertisement
Table of Contents
