Hitachi H8S/2633 Hardware Manual page 543

13.1.2 Block Diagram
Figure 13-1 shows a block diagram of the 8-bit timer module (TMR0, TMR1).
External clock source
TMCI01
TMCI23
Clock select
TMO0
TMRI01
TMRI23
Control logic
TMO1
A/D
conversion
start request
signal
522
Internal clock sources
ø/8
ø/64
ø/8192
Clock 1
Clock 0
Compare match A1
Compare match A0
Overflow 1
Overflow 0
Clear 0
Compare match B1
Compare match B0
CMIA0
CMIB0
OVI0
CMIA1
CMIB1
OVI1
Interrupt signals
Figure 13-1 Block Diagram of 8-Bit Timer
TCORA0
Comparator A0 Comparator A1
TCNT0
Clear 1
Comparator B0 Comparator B1
TCORB0
TCSR0
TCR0
TCORA1
TCNT1
TCORB1
TCSR1
TCR1