Table 8-12 Port 4 Pin Functions (cont)
Pin
Pin Functions and Selection Method
P40/SCK32
The pin function depends on bits CKE1 and CKE0 in SCR3-2, bit COM32 in
SMR32, and bit PCR40 in PCR4.
CKE1
CKE0
0
1
*
*
*
0
1
COM32
PCR40
0
1
*
0
1
*
Pin function
P40 input pin P40 output pin
SCK32
output pin
SCK32
input pin
8.5.4
Pin States
Table 8-13 shows the port 4 pin states in each operating mode.
Table 8-13 Port 4 Pin States
Pins
Reset
Sleep
Subsleep Standby
Watch
Subactive Active
P43/IRQ0
High-
Retains
Retains
previous
state
High-
Retains
Functional
Functional
P42/TXD32
P41/RXD32
P40/SCK32
impedance previous
state
impedance previous
state
154
ETC [ ETC ]
