Operations In Low-Power Consumption Modes (Standby Modes) - Fujitsu F2MC-8FX Hardware Manual

6.8 Operations in Low-power Consumption Modes (Standby
Modes)
The standby modes available are: sleep mode, stop mode, timebase timer mode, and
watch mode.
Overview of Transitions to and from Standby Mode
The standby modes available are: sleep mode, stop mode, timebase timer mode, and watch mode. The
device enters standby mode according to the settings in the standby control register (STBC).
The device is released from standby mode in response to an interrupt or reset. Before transition to normal
operation, the device waits for the oscillation stabilization wait time to elapse as required.
When released from standby mode by a reset, the device returns to main clock mode. When released from
standby mode by an interrupt, the device enters the clock mode in which the device was before entering the
standby mode.
Pin States in Standby Mode
The pin state setting bit (STBC:SPL) of the standby control register can be used to set the I/O port/
peripheral resource pins in the stop mode, timebase timer mode, or watch mode to hold their immediately
preceding state or to be placed in a high impedance state.
CHAPTER 6 CLOCK CONTROLLER
67