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6.7
State of Pins in Standby Mode and during Reset
The state of pins in standby mode and during reset are summarized below for each
memory access mode.
■ Software Pull-up Resistor
For pins with a pull-up resistor selected by software, the pull-up resistor is disconnected during L level
output.
■ State of Pins in Single-chip Mode
Table 6.7-1 lists the state of pins in single-chip mode.
Table 6.7-1 State of Pins in Single-chip Mode
Pin name
P00 to P07
P17
P20 to P27
P30 to P37
P40
The preceding state is
P42 to P47
retained
P50 to P57
P60 to P63
P10 to P16
P63
*1: "Input enabled" means that the input function is enabled when corresponding external interrupt pin is enable. Select
either the pull-up or the pull-down option. Alternatively, an external input is required. Pins used as output ports are the
same as other ports.
*2: "The preceding state is retained" means that the state of the pin output existing immediately before switching to this
mode is retained. Note that input is disabled if the preceding state was input.
• "State of the pin output is retained" means that the pin retains the value output from an operating internal
peripheral unit or the value output from the port if the pin is used as a port.
• "Input disabled" means that the input to the pin is not accepted because the internal circuit is inactive,
although operation of the input gate adjacent to the pin is enabled.
*3: In the "Input shut off" state, input is masked and the "L" level is transmitted internally. "Output Hi-Z" means that the
pin state is high-impedance because driving of the pin driving transistor is disabled.
Standby mode
Sleep
The preceding state is
retained
*2
Input enabled
CHAPTER 6 LOW POWER CONSUMPTION MODE
Stop
SPL = 0
Input shut off
*2
output Hi-Z
*1
Reset
SPL = 1
*3
/
Input disabled /
output Hi-Z
109
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