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CHAPTER 5 LOW POWER CONSUMPTION MODE
5.7
Status of Pins in Standby Mode and during Hold and Reset
This section summarizes the statuses of pins in standby mode and during hold and
reset.
s Software Pull-Up Resistor
For I/O pins configured in software to accept the connection of a pull-up resistor, making an
output setting disconnects the pull-up resistor.
s Status of Pins in Single-Chip Mode
Table 5.7-1 State of Pins in Single-Chip Mode
Pin name
Standby mode
Hold
Reset
Sleep mode
Stop mode
SPL=0
SPL=1
P00 to P07
P17
P20 to P27
P30 to P37
P40
P41 to P46
P50 to P57
P60 to P63
The preceding
status is
retained. (*2)
The preceding
status is
retained. (*2)
Input shut off (*3)
/output Hi-z (**)
Output Hi-z (*4)
P10 to P16
Input enabled (*1)
*1 "Input enabled" means that the input function is enabled. However, the input function is enabled only if an
external interrupt is enabled. These pins, when used as output ports, conform to the setting of the pin status
setting bit (SPL) of the low power consumption mode control register (LPMCR).
*2 "The preceding status is retained" means that the output status of the pin immediately before switching to
standby mode is retained (*5). However, note that the input is disabled (*6) if the pin was in the input status.
*3 "Input shut off" means that the input to the pin is inhibited.
*4 "Output Hi-Z" means that the pin-driving transistor is disabled and that the pin is made to have high
impedance.
*5 "the output status is retained as is" means that the output value of a peripheral function (resource) or a
port is retained.
*6 "the input is disabled" means that a value input to the pin cannot be accepted internally because an
internal circuit is not running.