Rev. 1.0, 02/00, page 79 of 1141
4.4
Sleep Mode
4.4.1
Sleep Mode
If a SLEEP instruction is executed when the SSBY bit in SBYCR and the LSON bit in LPWRCR
are both cleared to 0, the CPU will enter sleep mode. In sleep mode, CPU operation stops but the
contents of the CPU's internal registers are retained. Other supporting modules (excluding some
functions) do not stop.
4.4.2
Clearing Sleep Mode
Sleep mode is cleared by any interrupt, or with the
5(6
pin.
Clearing with an Interrupt: When an interrupt request signal is input, sleep mode is cleared and
interrupt exception handling is started. Sleep mode will not be cleared if interrupts are disabled,
or if interrupts other than NMI have been masked by the CPU.
Clearing with the
5(6
5(6
5(6
5(6
Pin: When the
5(6
pin is driven low, the reset state is entered. When the
5(6
pin is driven high after the prescribed reset input period, the CPU begins reset exception
handling.