HD643303x Hitachi, HD643303x Datasheet - Page 502
HD643303x
Manufacturer Part Number
HD643303x
Description
Hitachi Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD643303X.pdf
(572 pages)
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TCR0—Timer Control Register 0
Bit
Initial value
Read/Write
—
—
Counter clear 1 and 0
CCLR1 CCLR0
7
1
Bit 6
0
1
Clock edge 1 and 0
CKEG1 CKEG0
Bit 4
CCLR1
0
1
R/W
Bit 5
Timer prescaler 2 to 0
6
0
TPSC2
0
1
0
1
Bit 2
0
1
Bit 3
—
0
1
TCNT Clear Source
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:
CCLR0
TPSC1
R/W
Bit 1
5
0
Counted Edges of External Clock
Rising edges counted
Falling edges counted
Both edges counted
0
1
0
1
487
TPSC0
CKEG1
Bit 0
R/W
0
1
0
1
0
1
0
1
4
0
TCNT Clock Source
Internal clock: ø
Internal clock: ø/2
Internal clock: ø/4
Internal clock: ø/8
External clock A: TCLKA input
External clock B: TCLKB input
External clock C: TCLKC input
External clock D: TCLKD input
TCNT is cleared in synchronization
with other synchronized timers
CKEG0
R/W
3
0
H'64
TPSC2
R/W
2
0
TPSC1
R/W
1
0
TPSC0
R/W
0
0
ITU0
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