MB90560 Datasheet, PDF (134/581 Pages) Fujitsu Component Limited. – 16-BIT MICROCONTROLLER

5.5 Standby Mode
5.5.3 Stop mode
Stop mode causes the source oscillation to stop and deactivates all functions. It is
therefore the most power saving mode while data is being retained.
s Switching to stop mode
When “1” is written to the STP bit of the low power consumption mode control register (LPMCR)
is written in main clock mode (MCS of CKSCR = 1), switching to stop mode occurs.
During PLL clock mode (MCS of CKSCR = 0), writing “1” to the MCS bit of the clock selection
register (CKSCR) and writing “1” to the STP bit of LPMCR trigger switching to stop mode.
q Data retention function
In stop mode, the contents of dedicated registers, such as accumulators and internal RAM, are
retained.
q Operation during an interrupt
Writing “1” to the STP bit of LPMCR during an interrupt request does not trigger switching to stop
mode.
q Pin state setting
Before switching to stop mode, the SPL bit of LPMCR controls the external pins to either retain
the pervious state or go to high-impedance.
110 CHAPTER 5 LOW POWER CONSUMPTION MODE
MB90560 series