tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 199

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA002
14.4.4 8-bit programmable pulse generate (PPG) output mode
14.4.4.1 Setting
T00PWM registers.
outputs can be output to the TC01 pin. This function facilitates the generation of remote-controlled waveforms,
for example.
In the 8-bit PPG mode, the pulses with arbitrary duty and cycle are output by using the T00REG and
By setting the T001CR<OUTAND> register, a pulse that is a logical ANDed product of the TC00 and TC01
The operation of TC00 is described below, and the same applies to the operation of TC01.
"0". Set T00MOD<EIN0> to "0" and select the clock at T00MOD<TCK0>. Set the duty pulse width at
T00PWM and the cycle width at T00REG.
becomes invalid. Be sure to complete the required mode settings before starting the timer.
"L" level as the initial state of the
initial state of the
timer is stopped, the value of T00MOD<TFF0> is output to the
put levels of the
ANDed product of the TC00 and TC01 outputs.
PPG0 pin output
(TFF0=“0”)
PPG0 pin output
(TFF0=“1”)
TC00 is put into the 8-bit PPG mode by setting T00MOD<TCM0> to "10" and T001CR<TCAS> to
Set T00MOD<DBE0> to "1" to use the double buffer.
Setting T001CR<T00RUN> to "1" starts the operation. After the timer is started, writing to T00MOD
Set the initial state of the
Setting the T001CR<OUTAND> bit to "1" allows the
Table 14-8 List of Output Levels of
Timer start
TFF0
0
1
PPG0
(Duty pulse)
T00PWM
PPG0
T00REG
(1 cycle)
pin.
Figure 14-8
pin. If the
Before the start
of operation
(initial state)
PPG0
H
L
(Duty pulse)
T00PWM
PPG0
pin at T00MOD<TFF0>. Setting T00MOD<TFF0> to "0" selects the
PPG0
T00REG
(1 cycle)
Page 185
PPG0
pin. Setting T00MOD<TFF0> to "1" selects the "H" level as the
pin is set as the function output pin in the port setting while the
T00PWM
matched
PPG0
H
L
PPG0
Pulse Output
pin output level
Pin
T00REG
matched
H
L
PPG0
PPG0
pin to output a pulse that is a logical
(initial state)
pin. Table 14-8 shows the list of out-
Operation
stopped
H
L
Timer stop
TMP89FM42