HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 335

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

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 an output
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 TSNC.
Bit 5
CCLR0
0
1
0
1
Bit 3
0
1
—
compare 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
323
*1
*1
(Initial value)
(Initial value)