R5F61525 RENESAS [Renesas Technology Corp], R5F61525 Datasheet - Page 722

• Manufacturer Part Number: R5F61525
• Description: 32-Bit CISC Microcomputer H8SX Family H8SX/1500 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 19 Power-Down Modes
19.7.4
Figure 19.2 shows an example in which a transition is made to software standby mode at the
falling edge on the NMI pin, and software standby mode is cleared at the rising edge on the NMI
pin.
In this example, an NMI interrupt is accepted with the NMIEG bit in INTCR cleared to 0 (falling
edge specification), then the NMIEG bit is set to 1 (rising edge specification), the SSBY bit is set
to 1, and a SLEEP instruction is executed, causing a transition to software standby mode.
Software standby mode is then cleared at the rising edge on the NMI pin.
Rev. 3.00 Mar. 14, 2006 Page 684 of 804
REJ09B0104-0300
Software Standby Mode Application Example
Oscillator
I
NMI
NMIEG
SSBY
Figure 19.2 Software Standby Mode Application Example
NMI exception
handling
NMIEG = 1
SSBY = 1
SLEEP instruction
Software standby mode
(power-down mode)
settling time
Oscillation
t
OSC2
NMI exception
handling