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參數資料
| 型號： | UC1633QTR |
| 英文描述： | 8-bit MCU for automotive with Flash or ROM, 10-bit ADC, 5 timers, SPI, LINSCI", active CAN |
| 中文描述： | 鎖相環 |
| 文件頁數： | 4/8頁 |
| 文件大小： | 588K |
| 代理商： | UC1633QTR |
UC1633
UC2633
UC3633
Determining the Oscillator Frequency
The frequency at the oscillator is determined by the de-
sired RPM of the motor, the divide ratio selected, the
number of poles in the motor, and the state of the double
edge select pin.
f
OSC
(Hz) = (Divide Ratio)
(Motor RPM)
(1/60 SEC/MIN)
(No. of Rotor Poles/2)
(x 2 if Pin 5 Low)
The resulting reference frequency appearing at the phase
detector inputs is equal to the oscillator frequency divided
by the selected divide ratio. If the double edge option is
used, (Pin 5 low), the frequency of the sense amplifier in-
put signal is doubled by responding to both the rising and
falling edges of the input signal. Using this option, the loop
reference frequency can be doubled for a given motor
RPM.
APPLICATION AND OPERATING INFORMATION
Recommended Oscillator Configuration Using AT Cut Quartz Crystal
External Reference Frequency Input
Method for Deriving Rotation Feedback Signal from Analog Hall Effect Device
*This signal may require filtering if chopped mode drive scheme is used.
4
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| UC1634L | 制造商:Texas Instruments 功能描述:FREQUENCY CONTROLLER - Rail/Tube |
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