Datasheet

Rev. 3.00, 03/04, page 278 of 830
Clock selector
Clock
Compare-match A
OCRA
Comparator A
Internal data bus
FRC
Comparator B
OCRB
ICRA
ICRB
ICRC
ICRD
TCSR
FTCI
FTOB
FTIA
External clock Internal clock
φ/2
φ/8
φ/32
FTIB
FTIC
FTID
FTOA
Compare-match B
Overflow
Clear
Input capture
TIER
TCR
TOCR
ICIA
ICIB
ICIC
ICID
Interrupt signal
[Legend]
OCRA, OCRB:
OCRAR,OCRAF:
OCRDM:
FRC:
ICRA to D:
TCSR:
TIER:
TCR:
TOCR:
Output compare register A, B (16-bit)
Output compare register AR, AF (16-bit)
Output compare register DM (16-bit)
Free-running counter (16-bit)
Input capture registers A to D (16-bit)
Timer control/status register (8-bit)
Timer interrupt enable register (8-bit)
Timer control register (8-bit)
Timer output compare control register (8-bit)
OCIA
OCIB
FOVI
OCRAR/F
OCRDM
Comparator M
Compare-match M
× 1
× 2
Control logic
Module data bus
Bus interface
Figure 11.1 Block Diagram of 16-Bit Free-Running Timer