4

Proprietary to OmniVision Technologies

Version 1.3, January 15, 2003

OV7640/OV7140

CMOS VGA (640 x 480) CAMERACHIP™

Omni ision

Pin Description

Table 1

Pin Description

Pin Number

Name

Pin Type

Function/Description

01

VSS_A

Ground

Analog ground

02

VDD_A

VDD

Analog VDD

03

NC

—

No connection

04

NC

—

No connection

05

PWDN

Input

Sets device to power down standby mode

06

NC

—

No connection

07

VREF

VREF

Internal voltage reference (2.3V). Connect to ground through 1µF capacitor

08

VDD_C

VDD

Core VDD

09

VSYNC

Output

Vertical sync output

10

HREF

Output

HREF output

11

PCLK

Output

Pixel clock output

12

VDD_IO

VDD

I/O VDD

13

CLK

Input

External clock

14

NC

—

No connection

15

RESET

Input

Clears all registers and resets them to their default values.

16

NC

—

No connection

17

VSS_D

Ground

Digital ground

18

Y7

Output

Digital video output bit[7]

19

Y6

Output

Digital video output bit[6]

20

Y5

Output

Digital video output bit[5]

21

Y4

Output

Digital video output bit[4]

22

Y3

Output

Digital video output bit[3]

23

Y2

Output

Digital video output bit[2]

24

Y1

Output

Digital video output bit[1]

25

Y0

Output

Digital video output bit[0]

26

SIO_C

Input

SCCB serial interface clock

27

SIO_D

I/O

SCCB serial interface data I/O

28

NC

—

No connection