r5s72060w200fpv Renesas Electronics Corporation., r5s72060w200fpv Datasheet - Page 1009

• Manufacturer Part Number: r5s72060w200fpv
• Description: 32-bit Risc Microcomputer Superhtm Risc Engine Family / Sh7200 Series
• Manufacturer: Renesas Electronics Corporation.

22.3.3
This example describes a transition to software standby mode on the falling edge of the NMI
signal, and cancellation on the rising edge of the NMI signal. The timing is shown in figure 22.1.
When the NMI pin is changed from high to low level while the NMI edge select bit (NMIE) in
ICR is set to 0 (falling edge detection), the NMI interrupt is accepted. When the NMIE bit is set to
1 (rising edge detection) by the NMI exception service routine, the STBY bit in STBCR is set to 1,
and a SLEEP instruction is executed, software standby mode is entered. Thereafter, software
standby mode is canceled when the NMI pin is changed from low to high level.
Oscillator
STBY bit
LSI state
NMIE bit
NMI pin
Figure 22.1 NMI Timing in Software Standby Mode (Application Example)
Software Standby Mode Application Example
CK
execution
Program
exception
handling
NMI
service routine
Exception
standby mode
Software
Rev. 2.00 Dec. 09, 2005 Page 985 of 1152
settling time
Oscillation
Section 22 Power-Down Modes
NMI exception
REJ09B0191-0200
handling