PRELIMINARY

Document Number: 001-49075 Rev. *C

Page 2 of 12

Pin Description

Pin Number

Name

IO

Description

1

XOUT

Output

Crystal output. Float for external clock input.

2

XIN/CLKIN

Input

Crystal or external clock input.

3

PD#/OE

Input

Multifunction pin. Active low power down or active high output enable pin. Has weak

internal pull up.

4

GND

Power

Power supply ground.

5

NC

–

No connect. Pin has no internal connection.

6

CLKOUT

Output

Programmable clock output. Output voltage depends on VDD. Has weak internal

pull down.

7

NC

–

No connect. Pin has no internal connection.

8

VDD

Power

Programmable power supply:

CY22M1S: 2.5V, 3.0V, 3.3V (standard voltage)

CY22M1L: 1.8V (low voltage)

CY22M1

8-Pin QFN

6

5

8

7

1

2

3

4

XOUT

XIN/CLKIN

NC

CLKOUT

[+] Feedback