M16C62_M Datasheet, PDF (523/615 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

Timer A Applications
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
3.5 Solution for External Interrupt Pins Shortage
Overview The following are solution for external interrupt pins shortage. Figure 3.5.1 shows the set-up
procedure.
Use the following peripheral function:
• Event counter mode of timer A
Specifications
(1) Inputting a falling edge to the TA0IN pin generates a timer A0 interrupt.
Operation
(1) Set timer A0 to event counter mode, set timer to “0”, and set interrupt priority levels in timer A0.
(2) Inputting a falling edge to the TA0IN pin generates a timer A0 interrupt.
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