參數(shù)資料
型號： MB90246APFV
元件分類： 微控制器/微處理器
英文描述： 16-BIT, 16 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, LQFP-100
文件頁數(shù)： 29/100頁
文件大小： 1959K
代理商： MB90246APFV
34
MB90246A Series
4. 8-bit PWM Timer
The 8-bit PWM timer is a re-load timer module that can generate a pulse wave with any period/duty ratio. It uses
pulse output control according to timer operation for PWM (Pulse Width Modulation) output.
An appropriate external circuit allows the 8-bit PWM timer to operate as a D/A converter.
The 8-bit PWM timer module consists of two 8-bit re-load registers used to specify “H” width and “L” width and
of a down counter that is loaded alternately with those values and counts down.
A pulse waveform with any period and duty ratio is generated.
An output pulse’s duty ratio of 0.4 to 99.6 percent can be set.
An appropriate external circuit allows this PWM timer to operate as a D/A converter.
An interrupt request can be generated by counter underflow.
The count clock can be selected from two types of timebase timer output.
(1) Register Configuration
PWM0 to 3 operating mode control register (PWM)
PWM0 to 3 re-load register (PRLL, PRLH)
bit 15
bit 8
PEN
PCKS
POE
PIE
PUF
—
RESV
(Vacancy)
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
R/W
............
bit 15
Initial value
00000XX1 B
Address
PWMC0 : 000034H
PWMC1 : 000038H
PWMC2 : 00003CH
PWMC3 : 00002CH
bit 14 bit 13 bit 12 bit 11 bit 10 bit 9
bit 8
bit 7
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
R/W R/W R/W R/W R/W
R/W R/W R/W
R/W
Address
PRLH0 : 000037H
PRLH1 : 00003BH
PRLH2 : 00003FH
PRLH3 : 00002FH
PRLL0 : 000036H
PRLL1 : 00003AH
PRLL2 : 00003EH
PRLL3 : 00002EH
Initial value
XXXXXXX1 B
R/W
—
X
RESV
: Readable and writable
: Unused
: Indeterminate
: Reserved bit
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