MC33794 查看數據表（PDF） - Motorola => Freescale

零件编号

产品描述 (功能)

生产厂家

MC33794

Electric Field Imaging Device

Motorola => Freescale 

HSOP PIN FUNCTION DESCRIPTION (continued)

Pin

Pin Name

Formal Name

39

R_OSC

Oscillator Resistor

Definition

A resistor from this pin to circuit ground determines the operating frequency of the

oscillator. The 33794 is optimized for operation around 120 kHz.

40

CLK

Clock

This pin provides a square wave output at the same frequency as the internal

oscillator. The edges of the square wave coincide with the peaks (positive and

negative) of the sine wave.

41

VDD_MON

VDD Monitor

This is connected through a voltage divider to VDD. It allows reduction of the voltage

so it will fall within the range of the ADC on the MCU.

42

VDD

VDD Capacitor

A capacitor is connected to this pin to filter the internal analog regulated supply. This

supply is derived from VPWR.

44

VPWR

Positive Power Supply Input 12 V power applied to this pin will be converted to the regulated voltages needed to

operate the part. It is also converted to 5.0 V (VCC) and 8.5 V (VDD) to power the

MCU and external devices.

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA

33794

5

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