UPC667CT datasheet(6/14 Pages) RENESAS

6 / 14 page

µPC667

PIN FUNCTIONS

Pin Name

Pin No.

Input/

Function

Equivalent Circuit

Output

D1 to D10

1 to 10

Input

Digital signal

D1 is MSB, D10 is LSB.

CLK

Input

Clock

The rising edge of signal input to

this pin triggers analog output.

DVCC

—

Power supply for digital circuit

DGND

11, 14, 22

—

Ground for digital circuit

VRSET

—

Reference voltage adjustment

Voltage adjusting pin for the

incorporated reference voltage

generating circuit. The output

voltage of VROUT pin varies according

to the voltage applied to this pin.

When no adjustment is necessary,

connect approx. 0.1

µF capacitance

between this pin and GND pin.

VROUT

Output

Reference voltage output

Voltage output pin of the incorpo-

rated reference voltage generating

circuit. This pin has high output

impedance, and must be connected

with a high impedance element.

DVCC

500

Ω

DGND

DVCC

500

Ω

DGND

DVCC

DGND

AVCC

VROUT

AGND

2 k

Ω

AVCC

7.5 k

Ω

3 k

Ω

VRSET

AGND

Reference

voltage

generator

AVCC

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