HD6417706 Datasheet, PDF (584/709 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

Canceling with a Reset: Standby mode can be canceled with a reset (power-on or manual). Keep
the RESETP pin and RESETM pin low until the clock oscillation settles.
• Clock Pause Function
In software standby mode, the clock input from the EXTAL pin or CKIO pin can be halted and the
frequency can be changed. This function is used as follows:
1. Enter software standby mode using the appropriate procedures.
2. Once software standby mode is entered and the clock stopped within the chip, the STATUS1
pin output is low and the STATUS0 pin output is high.
3. Once the STATUS1 pin goes low and the STATUS0 pin goes high, the input clock is stopped
or the frequency is changed.
4. When the frequency is changed, an NMI, IRL, IRQ or on-chip supporting module (except the
internal timer) interrupt is input after the change. When the clock is stopped, the same
interrupts are input after the clock is applied.
5. After the time set in the WDT has elapsed, the clock starts being applied internally within the
chip, the STATUS1 and STATUS0 pins both go low, interrupts are handled, and operation
resumes.
Rev. 4.00, 03/04, page 538 of 660