CY25402/CY25422/CY25482

Document #: 001-12565 Rev. *F

Page 4 of 14

Figure 2. Pin Diagram - CY25482 8-LD SOIC

Table 3. Pin Definition - CY25482 (2.5 V, 3.0 V, or 3.3 V Supply)

Figure 3. Pin Diagram - CY25422 8-LD SOIC

Table 4. Pin Definition - CY25422 (1.8 V Supply)

Pin Number

Name

IO

Description

1

EXCLKIN

Input

2.5 V, 3.0 V, or 3.3 V external clock input

Power

Power Supply: 2.5 V, 3.0 V, or 3.3 V

3

CLK1

Output

Programmable clock output with spread spectrum

4

REFOUT/FS0

Output/input

Multifunction programmable pin: Reference clock output or frequency select pin

5

PD#/OE/FS1

Input

Multifunction programmable pin: Power-down, output enable or frequency select

pin

6

CLK2/SSON

Output/input

Multifunction Programmable pin: Programmable clock output with spread spectrum

or spread spectrum ON/OFF control pin

7

GND

Power

Power supply ground

8

DNU

Output

Do not use this pin

Pin Number

Name

IO

Description

1

XIN/EXCLKIN

Input

Crystal input or 1.8 V external clock input

Power

Power supply: 1.8 V

3

CLK1

Output

Programmable clock output with spread spectrum

4

REFOUT/FS0

Output/input

Multifunction programmable pin: reference clock output or frequency select pin

5

PD#/OE/FS1

Input

Multifunction programmable pin: power-down, output enable or frequency select

pin

6

CLK2/SSON

Output/input

Multifunction programmable pin: programmable clock output with spread spectrum

or spread spectrum ON/OFF control pin

7

GND

Power

Power supply ground

8

XOUT

Output

Crystal output

CY25482

1

2

3

4

8

7

6

5

DNU

GND

PD#/OE/FS1

EXCLKIN

CLK1

REFOUT/

FS0

CLK2/SSON

CY25422

1

2

3

4

8

7

6

5

XOUT

GND

PD#/OE/FS1

XIN/

EXCLKIN

CLK1

REFOUT/

FS0

CLK2/SSON