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Block Diagram
Figure 9.1 shows a block diagram of timer A.
φ
1/4
W
φ
[Legend]
TMA:
Timer mode register A
TCA:
Timer counter A
IRRTA:
Timer A overflow interrupt request flag
PSW:
Prescaler W
PSS:
Prescaler S
*
Note:
Can be selected only when the prescaler W output (φ
PSW
φ
/4
W
φ
/128
W
φ/8192, φ/4096, φ/2048,
φ/512, φ/256, φ/128,
φ/32, φ/8
PSS
Figure 9.1 Block Diagram of Timer A
TMA
TCA
/128) is used as the TCA input clock.
W
Rev. 6.00, 08/04, page 239 of 628
IRRTA
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