HD643303x Hitachi, HD643303x Datasheet - Page 197

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

Bit 1—Counter Start 1 (STR1): Starts and stops timer counter 1 (TCNT1).
Bit 1
STR1
0
1
Bit 0—Counter Start 0 (STR0): Starts and stops timer counter 0 (TCNT0).
Bit 0
STR0
0
1
8.2.2 Timer Synchro Register (TSNC)
TSNC is an 8-bit readable/writable register that selects whether channels 0 to 4 operate
independently or synchronously. Channels are synchronized by setting the corresponding bits to 1.
TSNC is initialized to H'E0 by a reset and in standby mode.
Bits 7 to 5—Reserved: Read-only bits, always read as 1.
Bit 4—Timer Sync 4 (SYNC4): Selects whether channel 4 operates independently or
synchronously.
Bit 4
SYNC4
0
1
Bit
Initial value
Read/Write
Description
TCNT1 is halted
TCNT1 is counting
Description
TCNT0 is halted
TCNT0 is counting
Description
Channel 4’s timer counter (TCNT4) operates independently
TCNT4 is preset and cleared independently of other channels
Channel 4 operates synchronously
TCNT4 can be synchronously preset and cleared
—
—
7
1
Reserved bits
—
—
6
1
—
—
5
1
182
SYNC4
R/W
4
0
SYNC3
R/W
3
0
Timer sync 4 to 0
These bits synchronize
channels 4 to 0
SYNC2
R/W
2
0
SYNC1
R/W
1
0
(Initial value)
(Initial value)
(Initial value)
SYNC0
R/W
0
0