SN8P1700
8-bit micro-controller build-in 12-bit ADC
TC1M MODE REGISTER
The TC1M is an 8-bit read/write timer mode register. By loading different value into the TC1M register, users can
modify the timer clock frequency dynamically as program executing.
Eight rates for TC1 timer can be selected by TC1RATE0 ~ TC1RATE2 bits. The range is from fcpu/2 to fcpu/256. The
TC1M initial value is zero and the rate is fcpu/256. The bit7 of TC1M called TC1ENB is the control bit to start TC1 timer.
The combination of these bits is to determine the TC1 timer clock frequency and the intervals.
TC1M initial value = 0000 0000
0DCH
TC1M
Bit 7
TC1ENB TC1RATE2 TC1RATE1 TC1RATE0
R/W R/W R/W R/W
Bit 6
Bit 5
Bit 4
Bit 3
0
-
Bit 2
ALOAD1
R/W
Bit 1
TC1OUT PWM1OUT
R/W R/W
Bit 0
TC1ENB: TC1 counter/BZ1/PWM1OUT enable bit. 0 = disable, 1 = enable.
TC1RATE2~TC1RATE0: TC1 internal clock select bits. 000 = fcpu/256, 001 = fcpu/128, … , 110 = fcpu/4, 111 =
fcpu/2.
ALOAD1: TC1 auto-reload function control bit. 0 = none auto-reload, 1 = auto-reload.
TC1OUT: TC1 time-out toggle signal output control bit. 0 = To disable TC1 signal output and to enable P5.3’s I/O
function, 1 = To enable TC1’s signal output and to disable P5.3’s I/O function. (Auto-disable the PWM1OUT function.)
PWM1OUT: TC1’s PWM output control bit. 0 = To disable the PWM output, 1 = To enable the PWM output (The
TC1OUT control bit must = 0 )
ꢂ
ꢂ
Note: Bit3 must set to 0..
Note: The S8KC ICE do not support the PWM1OUT and TC1OUT Function. The PWM1OUT and TC1OUT
must use the S8KD ICE (or later) to verify the function.
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