CMOSTEK CMT2380F17, Manual

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CMT2380F17
Rev0.1 | 167/347
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is configured to mode 0 which does no behave capture or reload function, the Timer 3 external input
remains the external transition detection and reports on EXF3 flag with Timer 3 interrupt.
Bit 2: TR3, Timer 3 Run control bit. If in Timer 3 split mode, it only controls the TH3.
0: Disabled to stop the Timer/Counter 3.
1: Enabled to start the Timer/Counter 3.
Bit 1: C/T3, Timer 3 clock or counter source selector. The function is active with T3X12 and T3CKS as
following definition:
T3CKS, T3X12, C/T3 Timer 3 Clock Selection
TH3 Clock Selection in
split mode
0 0 0 SYSCLK/12 SYSCLK/12
0 0 1 T3 Pin T3 Pin
0 1 0 SYSCLK SYSCLK
0 1 1 INT1ET TL3OF
1 0 0 S1TOF S1TOF
1 0 1 T0OF T0OF
1 1 0 Reserved Reserved
1 1 1 T1OF T1OF
Bit 0: CP/RL3, Timer 3 mode control bit. Refer T3MOD.T3MS0 description for the function definition.

T3MOD
：
Timer 3 Mode Register
SFR Page = 1 Only
SFR Address = 0xC9
Bit 7 6 5 4 3 2 1 0
Name T3SPL TL3X12 T3EXH T3X12 TR3L TR3LC T3OE T3MS0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Reset Value 0 0 0 0 0 0 0 0
Bit 7: T3SPL, Timer 3 split mode control.
0: Disable Timer 3 to split mode.
1: Enable Timer 3 to split mode.
Bit 6: TL3X12, the clock control bit of TL3 in Timer 3 split mode.
TL3CS, TL3X12 TL3 Clock Selection
0 0 SYSCLK/12
0 1 SYSCLK
1 0 S1TOF
1 1 INT1ET
Bit 5: T3EXH, Timer 3 external enable flag on a positive transition of T3EX pin.
0: Cause Timer 3 to ignore positive transition events at T3EX pin.
1: Allows a capture or reload to occur as a result of a 0-to1 transition on T3EX pin and set EXF3.
Bit 4: T3X12, Timer 3 clock source selector. Refer to C/T3 description for the function defined.
Bit 3: TR3L, TL3 Run control bit in Timer 3 split mode.
0: Disabled to stop the TL3.
1: Enabled to start the TL3.
Bit 2: TR3LC, TR3L Cleared control.
0: Disabled the TR3L cleared by hardware event.
1: Enabled the TR3L cleared by the TH3 overflow (Timer 3 in mode 0/1) or capture input (Timer 3 in mode
2/3).
Bit 1: T3OE, Timer 3 clock-out enable bit. 0: Disable Timer 3 clock output.
1: Enable Timer 3 clock output.