M30218 Datasheet, PDF (422/467 Pages) Mitsubishi Electric Semiconductor – M30218 Group

Controlling Power Applications
Mitsubishi microcomputers
M30218 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
3.7 Controlling Power Using Stop Mode
Overview
The following are steps for controlling power using stop mode. Figure 3.7.1 shows the operation
timing, Figure 3.7.2 shows an example of circuit, and Figures 3.7.3 and 3.7.4 show the set-up
procedure.
Use the following peripheral functions:
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• INT5 interrupt
• Stop mode
Specifications
(1) Use INT5 for the INT interrupt. Use the P85/INT5 pin as an input pin.
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(2) When a INT5 interrupt request occurs, the stop mode is cleared.
Operation
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(1) Enable INT5 interrupt and set the pull-up function to the P85 pin.
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(2) Stop XIN to enter the stop mode. Enable INT5 interrupt at this time.
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(3) When a INT5 interrupt request occurs by falling edge input to the P85 pin, the stop mode is
cleared. Execute the return processing for the other interrupts, which are stopped, in the
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INT5 interrupt processing and others.
(1) Enter stop mode
(2) Clear stop mode
(3) Return processing
INT5 input
INT5 interrupt processing
CPU clock
Stop mode
Figure 3.7.1. Operation timing of controlling power using stop mode
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