SN8P1700
8-bit micro-controller build-in 12-bit ADC
TC0M MODE REGISTER
The TC0M is the timer counter mode register, which is an 8-bit read/write register. By loading different value into the
TC0M register, users can modify the timer counter clock frequency dynamically when program executing.
Eight rates for TC0 timer can be selected by TC0RATE0 ~ TC0RATE2 bits. The range is from fcpu/2 to fcpu/256. The
TC0M initial value is zero and the rate is fcpu/256. The bit7 of TC0M called TC0ENB is the control bit to start TC0 timer.
The combination of these bits is to determine the TC0 timer clock frequency and the intervals.
TC0M initial value = 0000 0000
0DAH
TC0M
Bit 7
TC0ENB TC0RATE2 TC0RATE1 TC0RATE0
R/W R/W R/W R/W
Bit 6
Bit 5
Bit 4
Bit 3
0
-
Bit 2
ALOAD0
R/W
Bit 1
TC0OUT PWM0OUT
R/W R/W
Bit 0
TC0ENB: TC0 counter/BZ0/PWM0OUT enable bit. 0 = disable, 1 = enable.
TC0RATE2~TC0RATE0: TC0 internal clock select bits. 000 = fcpu/256, 001 = fcpu/128, … , 110 = fcpu/4, 111 =
fcpu/2.
ALOAD0: TC0 auto-reload function control bit. 0 = none auto-reload, 1 = auto-reload.
TC0OUT: TC0 time-out toggle signal output control bit. 0 = To disable TC0 signal output and to enable P5.4’s I/O
function, 1 = To enable TC0’s signal output and to disable P5.4’s I/O function. (Auto-disable the PWM0OUT function.)
PWM0OUT: TC0’s PWM output control bit. 0 = To disable the PWM output, 1 = To enable the PWM output (The
TC0OUT control bit must = 0 )
ꢂ
ꢂ
Note: Bit3 must set to 0..
Note: The ICE S8KC do not support the PWM0OUT and TC0OUT Function. The PWM0OUT and TC0OUT
must use the S8KD ICE (or later) to verify the function.
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