CHAPTER 19 STANDBY FUNCTION
User’s Manual U16896EJ2V0UD
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(2) Power save mode register (PSMR)
This is an 8-bit register that controls the operation status in the power save mode and the clock operation.
This register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 00H.
XTSTP
Subclock oscillator used
Subclock oscillator not used
XTSTP
0
1
Specification of subclock oscillator use
PSMR
0
0
0
0
0
0
PSM
IDLE mode
STOP mode
PSM
0
1
Specification of operation in standby mode
After reset: 00H R/W Address: FFFFF820H
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Cautions 1. Be sure to clear the XTSTP bit to 0 during subclock resonator connection.
2. Be sure to clear bits 1 to 6 of the PSMR register to 0.
3. The PSM bit is valid only when the PSC.STP bit is 1.