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Internal clock
Select clock
Control logic
[Legend]
TCORA_Y:
Time constant register A_Y
TCORB_Y:
Time constant register B_Y
TCNT_Y:
Timer counter_Y
TCSR_Y:
Timer control / status register_Y
TCR_Y:
Timer control register_Y
Figure 11.2 Block Diagram of 8-Bit Timer (TMR_Y and TMR_X)
TMR_X
φ
φ
φ
,
/2,
/4
TMR_Y
φ
φ
φ
/4,
/256,
/2048
Clock X
Clock Y
Compare match AX
Comparator A_Y
Compare match AY
Overflow X
Overflow Y
Clear Y
Compare match BX
Compare match BY
Comparator B_Y
Interrupt signals
CMIAX
CMIBX
OVIX
CMIAY
CMIBY
OVIY
TCORA_X:
TCORB_X:
TCNT_X:
TCSR_X:
TCR_X:
TCORC:
Section 11 8-Bit Timer (TMR)
TCORA_Y
TCORA1_X
Comparator A_X
TCNT_Y
TCNT_X
Clear X
Comparator B_X
TCORB_Y
TCORB_X
TCOR_Y
TCSR_X
TCR_Y
TCR_X
Time constant register A_X
Time constant register B_X
Timer counter_X
Timer control / status register_X
Timer control register_X
Tme constant registerC
Rev. 1.00 Mar. 12, 2008 Page 393 of 1178
REJ09B0403-0100
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