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參數(shù)資料
| 型號： | ST72372 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-Bit MCUs with 16K ROM/OTP/EPROM, 512 Bytes RAM, ADC, DAC (PWM), Timer, IIC and SCI(8位微控制器(8M)) |
| 中文描述： | 8 - 16K的光碟/雙層/存儲器，512字節(jié)RAM，ADC和DAC的器（PWM），定時(shí)器，IIC和脊髓損傷（8位微控制器（8米）位MCU） |
| 文件頁數(shù)： | 71/94頁 |
| 文件大?。?/td> | 642K |
| 代理商： | ST72372 |
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ST72371/ST72372
PWM/BRM GENERATOR
(Cont’d)
4.6.3.2 12-Bit PWM/BRM
The 12 bits of the 12-bit PWM/BRM generator are
distributed as 6 PWM bits and 6 BRM bits.
PWM Generation
The functionality of the PWM generation is equiva-
lent to the PWM generation of the 10-bit PWM/
BRM described in the previous paragraph and so
will not be repeated here. Please refer to the pre-
vious paragraph for functionality, to be used in
conjunction with the Register description.
BRM Generation
A 6-bit BRM register defining the intervals where
an incremental pulse (with duration of T
CPU
) is
added to the beginning of the original PWM pulse.
4.6.3.3 PWM/BRM OUTPUTS
The PWM/BRM outputs are assigned to dedicated
pins.
If necessary, these pins can be used in push-pull
or open-drain modes under software control.
In these pins, the PWM/BRM outputs are connect-
ed to a serial resistor which must be taken into ac-
count to calculate the RC filter.
Figure 33. Precision for PWM/BRM Tuning for VOUTEFF (After filtering)
BRM 6 - Bit Data
000000
000001
000010
000100
001000
010000
100000
Incremental Pulse Intervals
none
i = 32
i = 16,48
i = 8,24,40,56
i = 4,12,20,28,36,44,52,60
i = 2,6,10,...50,54,58,62
i = 1,3,5,7,9,...55,59,61,63
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