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| HD6433802H Datasheet, PDF (160/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer | |||
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Pin
P40/SCK32
Pin Functions and Selection Method
The pin function depends on bit CKE1 and CKE0 in SCR3, bit COM in SMR, and
bit PCR40 in PCR4.
CKE1
0
1
CKE0
0
1
*
COM
0
1
*
*
PCR40
Pin function
0
1
*
*
P40 input pin P40 output pin SCK32 output SCK32 input
pin
pin
*: Donât care
8.3.4 Pin States
Table 8.7 shows the port 4 pin states in each operating mode.
Table 8.7 Port 4 Pin States
Pins
P43/IRQ0
P42/TXD32
P41/RXD32
P40/SCK32
Reset
Sleep Subsleep Standby Watch Subactive Active
High-
Retains Retains High-
Retains Functional Functional
impedance previous previous impedance previous
state state
state
142
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