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10.5 Overview of 8-/16-bit Timer/Counter
3 internal and 1 external clock input can be selected.
■ Feature of 8-/16-bit Timer/Counter
• 3 internal and 1 external clock input can be selected.
• Usable as an 8-bit timer/counter and 8-bit timer under 8-bit 2ch mode.
• Usable as 16-bit timer/counter under 16-bit mode.
• Square wave output function
■ Block Diagram of 8-/16-bit Timer/Counter
Figure 10.5-1 Block diagram of 8-/16-bit Timer/Counter
TSTR1 TCS10 TCS11 TCS12 TIE1 TFCR1 TIF1TxCR1
TxCR0
TSTR0 TCS00 TCS01 TCS02 CINV TIE0 TFCR0 TIF0
R S
IRQxx
I-unit
TxO0
Unused
CK00
CK02
EC5
8bit Counter Low
Count Data Reg Low
8bit Counter Hi
Data Register Hi
Data Register Low
Count Data Reg Hi
TxCD0
TxDR0
TxCD1TxDR1
TSTR0
/TSTR1
TxO1
(T5O1)
CK10
CK12
IRQxx
(I-unit)
8bit Mode
M
P
X
M
P
X
(from FRC)
(from FRC)
TSTR0
DQ
QX
CK
CLR
LOAD
Comparate data latch
LOAD Comparate data latch
EQ
EQ
CK
CLR
DQ
QX
R S
Comparator
Low
Comparator
Hi