参数资料
型号: M37545G4-XXXGP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP32
封装: 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件页数: 26/65页
文件大小: 782K
代理商: M37545G4-XXXGP
Rev.1.07
Mar 19, 2009
Page 30 of 60
REJ03B0140-0107
7545 Group
Fig. 26 Operating waveform diagram of carrier wave generating circuit
Fig. 27 Control waveform diagram of carrier wave by timer 2
Fig. 28 Waveform diagram of carrier wave in “H” duration expansion mode
04
Carrier waveform control by timer 2
Timer 2 count source
Timer 2 interrupt
Timer 2 count value
Carrier waveform
Primary
Timer 3 count source
(carrier wave output
selected)
Timer 3 interrupt
Timer 3 count value
Carrier waveform
Count period
Secondary
Primary
03 02 01 00 05 04 03 02 01 00 04 03 02 01 00 05 04 03 02 01 00 04 03 02 01 00 05 04 03 02 01 00 04 03 02 01
04 03 02 01 00
05
04 03 02 01 00
05
04 03 02 01 00
05
04 03 02 01 00
05
04 03 02 01 00
05
04 03 02 01 00
05
P42/CARR pin output
The timing adjustment of the output waveform causes the gap between the timer count value and the output waveform,
and the output waveform changes in the reload cycle after the timer underflow.
Moreover, the timer interrupt occurs at the change point of the output waveform.
(The timing of the interrupt occurrence is behind a half cycle of the count source, compared with timer 1. )
Note:
Carrier waveform control by timer 3
The timing adjustment of the output waveform causes the gap between the timer count value and the output waveform,
and the output waveform changes in the reload cycle after the timer underflow.
Moreover, the timer interrupt occurs at the change point of the output waveform.
(The timing of the interrupt occurrence is behind a half cycle of the count source, compared with timer 1. )
Note:
04 03 02 01 00 05 04 03 02 01 00 05 04 03 02 01 00 04 03 02 01 00 05 04 03 02 01 00 04 03 02 01 00 05 04 03 02 01
Timer 2 count value
Writing to timer 2 secondary
in this duration
Writing to timer 2 primary
in this duration
Count value of primary side is changed
Count value of secondary side is changed
Primary
Secondary
Primary
Timer 2 count source
Timer 2 interrupt
Carrier waveform
03
02
01
00
04
03
02
01
00
03
02
01
04
00
03
02
01
00
Timer 2 count source
Timer 2 interrupt
Timer 2 count value
Carrier waveform
Primary
Secondary
Primary
Expansion duration for half-clock
Carrier wave “H” duration expansion = invalid
Carrier wave “H” duration expansion = valid
Secondary
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