tmp88ch40img TOSHIBA Semiconductor CORPORATION, tmp88ch40img Datasheet - Page 66

• Manufacturer Part Number: tmp88ch40img
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

10.1 Configuration
10. 8-Bit TimerCounter 4 (TC4)
10.2 TimerCounter Control
Timer Register and Control Register
(001BH)
(001AH)
TC4DR
TC4CR
The TimerCounter 4 is controlled by the TimerCounter 4 control register (TC4CR) and timer registers 4 (TC4DR).
Note 1: fc: High-frequency clock [Hz], *: Don’t care
Note 2: To set the timer registers, the following relationship must be satisfied.
Note 3: To start timer operation (TC4CR<TC4S> = 0 → 1) or disable timer operation (TC4CR<TC4S> = 1→ 0), do not
Note 4: The bit 6 and 7 of TC4CR are read as a don’t care when these bits are read.
Note 5: Do not change the TC4DR setting when the timer is running.
1 ≤ TC4DR ≤ 255
change the TC4CR<TC4M, TC4CK> setting. During timer operation (TC4CR<TC4S> = 1→ 1), do not change it,
either. If the setting is programmed during timer operation, counting is not performed correctly.
TC4CK
TC4M
TC4S
7
7
TC4 start control
TC4 source clock select
[Hz]
TC4 operating mode
select
6
6
TC4S
5
5
4
4
0: Stop and counter clear
1: Start
00: Timer mode
01: Reserved
10: Reserved
11: Reserved
000
001
010
100
101
011
110
111
TC4CK
3
3
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DV1CK = 0
Reserved
Reserved
Reserved
2
2
fc/2
fc/2
fc/2
fc/2
11
7
5
3
NORMAL, IDLE mode
1
1
Reserved
TC4M
0
0
DV1CK = 1
Read/Write (Initial value: 1111 1111)
Read/Write (Initial value: **00 0000)
Reserved
Reserved
Reserved
fc/2
fc/2
fc/2
fc/2
12
8
6
4
TMP88CH40IMG
R/W
R/W
R/W