m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 314

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
3.4 Solution for External Interrupt Pins Shortage
Overview
Specifications
Operation
The following are solution for external interrupt pins shortage. Figure 3.4.1 shows the set-up
procedure.
Use the following peripheral function:
• Event counter mode of timer A
(1) Inputting a falling edge to the TA0
(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 TA0
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IN
IN
pin generates a timer A0 interrupt.
pin generates a timer A0 interrupt.
3. Timer A Applications