H838532H datasheet(284/508 Pages) RENESAS

Part #	H838532H

Description	16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series

PDF	508 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

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284 / 508 page

Section 9 Timers

Rev. 1.00 May 30, 2008 Page 264 of 484

REJ09B0436-0100

Set I bit to 1 in CCR

Manipulate port mode register

TMIG confirmation time

Clear interrupt request flag to 0

Clear I bit to 0 in CCR

Disable interrupts. (Interrupts can also be disabled by

manipulating the interrupt enable bit in interrupt enable

After manipulating he port mode register, wait for the

TMIG confirmation time (at least two system clocks when

the noise canceler is not used; at least five sampling

clocks when the noise canceler is used), then clear the

interrupt enable flag to 0.

Enable interrupts

Figure 9.15 Port Mode Register Manipulation and Interrupt Enable Flag Clearing

Procedure

9.5.6

Timer G Application Example

Using timer G, it is possible to measure the high and low widths of the input capture input signal

as absolute values. For this purpose, CCLR1 and CCLR0 should both be set to 1 in TMG.

Figure 9.16 shows an example of the operation in this case.

Counter cleared

TCG

H'FF

H'00

Input capture

input signal

Input capture

Figure 9.16 Timer G Application Example

H838532H Datasheet(PDF) 284 Page - Renesas Technology Corp