Hitachi H8/3692 ユーザーズマニュアル

Rev. 1.0, 07/01, page 153 of 372

Internal clock: 

External clock: FTCI

FTIOA

FTIOB

FTIOC

FTIOD

IRRTW

Control logic

Clock

selector

Comparator

TCNT

Internal 
data bus

Bus interface

Legend:
TMRW: Timer mode register W (8 bits)
TCRW:

Timer control register W (8 bits)

TIERW: Timer interrupt enable register W (8 bits)
TSRW:

Timer status register W (8 bits)

TIOR:

Timer I/O control register (8 bits)

TCNT:

Timer counter (16 bits)

GRA:

General register A (input capture/output compare register: 16 bits)

GRB:

General register B (input capture/output compare register: 16 bits)

GRC:

General register C (input capture/output compare register: 16 bits)

GRD:

General register D (input capture/output compare register: 16 bits)

GRA

GRB

GRC

GRD

TMRW

TCRW

TIERW

TSRW

TIOR

ø
ø/2
ø/4
ø/8

Table 12-2 summarizes the timer W pins.

External clock input

FTCI

Input

External clock input pin

Input capture/output
compare A

FTIOA

Input/output

Output pin for GRA output compare or
input pin for GRA input capture

Input capture/output
compare B

FTIOB

Input/output

Output pin for GRB output compare,
input pin for GRB input capture, or
PWM output pin in PWM mode

Input capture/output
compare C

FTIOC

Input/output

Output pin for GRC output compare,
input pin for GRC input capture, or
PWM output pin in PWM mode

Input capture/output
compare D

FTIOD

Input/output

Output pin for GRD output compare,
input pin for GRD input capture, or
PWM output pin in PWM mode