參數(shù)資料
型號(hào): UPD70433R-12
廠商: NEC Corp.
元件分類: 16位微控制器
英文描述: V55PITM 16-BIT MICROPROCESSOR
中文描述: V55PITM 16位微處理器
文件頁數(shù): 61/166頁
文件大小: 772K
代理商: UPD70433R-12
61
μ
PD70433
10. PWM UNIT
The V55PI is provided with an 8-bit precision PWM (pulse width modulation) signal output function.
PWM output can be used as a digital-to-analog conversion output by connecting a low-pass filter, etc., externally. This
is ideal for the actuator control signal for motors, etc.
10.1 FEATURES
The PWM unit offers the following features:
PWM output pulse active level selectable
Frequency: 25 MHz (with 12.5 MHz system clock
φ
)
PWM cycle: 40.96
μ
s
: 32 MHz (with 16 MHz system clock
φ
)
PWM cycle: 32.00
μ
s
Output pulse width (duty): 0, 1/256, ....., 255/256
Resolution: 160 ns (with 12.5 MHz system clock
φ
)
125 ns (with 16 MHz system clock
φ
)
10.2 PWM UNIT CONFIGURATION
The configuration of the PWM unit is shown in Figure 10-1.
The PWM unit consists of the PWM register (PWM) and PWM control register (PWMC), and an 8-bit counter.
The PWM register controls the pulse width (duty) in the PWM output mode. The 8–bit counter is set to 00H by reset input.
The PWM register is not affected by reset input.
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