 English |
|
|
|
|
|
|
|
| HD6417750RF240V Datasheet, PDF (534/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series | |||
| |||
| ◁ |
Section 20 Power-Down Modes
20.4.4 Software Standby Mode Application Example
Figure 20.3 shows an example in which a transition is made to software standby mode at a falling
edge on the NMI pin, and software standby mode is cleared at a rising edge on the NMI pin.
In this example, an NMI interrupt is accepted with the NMIEG bit in SYSCR 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.
Oscillator
Ï
NMI
NMIEG
SSBY
NMI exception
handling
NMIEG = 1
SSBY = 1
Software standby mode
(power-down mode)
SLEEP instruction
Oscillation
stabilization
time tOSC2
NMI exception
handling
Figure 20.3 Software Standby Mode Application Example
Rev. 7.00 Sep. 11, 2009 Page 498 of 566
REJ09B0211-0700
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese