HD643303x Hitachi, HD643303x Datasheet - Page 212
HD643303x
Manufacturer Part Number
HD643303x
Description
Hitachi Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD643303X.pdf
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Bits 6 and 5—Counter Clear 1/0 (CCLR1, CCLR0): These bits select how TCNT is cleared.
Bit 6
CCLR1
0
1
Notes: 1. TCNT is cleared by compare match when the general register functions as a compare
Bits 4 and 3—Clock Edge 1/0 (CKEG1, CKEG0): These bits select external clock input edges
when an external clock source is used.
Bit 4
CKEG1 CKEG0 Description
0
1
When channel 2 is set to phase counting mode, bits CKEG1 and CKEG0 in TCR2 are ignored.
Phase counting takes precedence.
2. Selected in the timer synchro register (TSNC).
0
1
0
0
1
—
Bit 5
CCLR0
1
Bit 3
match register, and by input capture when the general register functions as an input
capture register.
Description
TCNT is not cleared
TCNT is cleared by GRA compare match or input capture
TCNT is cleared by GRB compare match or input capture
Synchronous clear: TCNT is cleared in synchronization with other
synchronized timers
Count rising edges
Count falling edges
Count both edges
*2
197
*1
*1
(Initial value)
(Initial value)
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