ov7620 OmniVision Technologies, Inc, ov7620 Datasheet - Page 20

• Manufacturer Part Number: ov7620
• Description: Single-chip Cmos Vga Color Digital Camera
• Manufacturer: OmniVision Technologies, Inc

OV7620/OV7120 Product Specifications - Rev. 1.2 (7/10/01)
SRAM is internal control bit which is high means the OV7620/OV7120 enter external RAM sta-
tus. This is programmed by SCCB (register 27) or power-on read-in. When SRAM=1, OV7620/
OV7120 all data bus will be tri-stated and ready to send the data. Micro-controller will send a ini-
tial signal to FPGA to reset all RAM Address block, after that, there are two method to get one
frame data frame OV7620/OV7120:
The OV7620/OV7120 output signal VS is the ACK signal from sensor, when VS is high means
OV7620/OV7120 is in ready status, when VS is low, means OV7620/OV7120 will send one
frame data.
1. Micro-controller send a initial pulse to OV7620/OV7120 AGCEN input pin
2. Micro-controller send a SCCB command to program OV7620/OV7120 send Single frame data
Preliminary
Company Confidential
OMNIVISION TECHNOLOGIES INC.