参数资料
型号: MC68HC05T16B
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56
封装: PLASTIC, SDIP-56
文件页数: 97/128页
文件大小: 734K
代理商: MC68HC05T16B
MOTOROLA
8-4
MC68HC05T16
PULSE WIDTH MODULATOR
8
In order to prevent transient noise at the output during MCU write to the 8-bit PWM and 6-bit BRM
registers, double buffering is used. Programming of the 2 registers must follow the sequence as
shown below:
LDA BRM_value
STA $35
;Data put in 6-bit BRM buffer
LDA PWM_value
STA $36
;Load 6-bit BRM and 8-bit PWM register
The instruction STA $35 simply puts the 6-bit BRM data in a buffer. Output is not affected at this
time. The instruction STA $36, then, puts the total 14-bit data to BRM and PWM register at the
same time. Output waveform will change accordingly starting from the beginning of the next PWM
cycle.
TPG
68
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