HD6475328CG Datasheet, PDF (224/459 Pages) Hitachi Semiconductor – Manual Gives a Hardware Description

11.1.2 Block Diagram
Figure 11-1 shows a block diagram of 8-bit timer.
External clocks
TMCI
Internal clocks
ø/8
ø/64
ø/1024
Clock select
Clock
TMO
TMRI
Compare-match A
Overflow
Clear
Control
logic
Compare-match B
TCORA
Comparator A
TCNT
Comparator B
TCORB
TCSR
Module
data
bus
TCR
CMIA
CMIB
OVI
Interrupt signals
TCORA: Time Constant Register A
TCORB: Time Constant Register B
TCNT: Timer Counter
TCSR: Timer Control/Status Register
TCR: Timer Control Register
Figure 11-1 Block Diagram of 8-Bit Timer
Internal
data bus
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