ST49C101A-XX

3

Rev. 2.20

PIN DESCRIPTION

Pin #

Symbol

Type

Description

1

XTAL1

I

Crystal or External Clock Input. A crystal can be connected to this pin

and XTAL2 pin to generate internal phase locked loop reference clock.

For external clock, XTAL2 is left open or used as buffered clock output.

OE

I

Clock Output Enable (Active high). CLOCK output is three stated when

this pin is low. Connect to DVCC for normal operation.

3

AGND

O

Analog Ground.

4

DGND

O

Digital Ground.

5

CLOCK

O

Programmed Output Clock.

6DV

CC

I

Positive Supply Voltage. Single +5 or 3.3 volts.

7AV

CC

I

Analog Supply Voltage. Single +5 or 3.3 volts.

8

XTAL2

O

Crystal Output.

8

1

5

4

2

3

7

6

XTAL2

AVCC

DVCC

CLOCK

XTAL1

OE

AGND

DGND

8 Pin SOIC (Jedec, 0.150")