AR0141CS(2016) View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

AR0141CS
(Rev.:2016)

1/4-Inch Digital Image Sensor

ON Semiconductor 

AR0141CS: 1/4-Inch Digital Image Sensor

Slave Mode

Figure 27: Slave Mode Example with Equal Integration and Frame Readout Periods

The integration of the last row is started before the end of the programmed integration for the first row.

Frame

Valid

VD Signal

Rising

Edge

Rising

Edge

Slave Mode

Trigger

Row 0

Inactive

Active

Rising edge of VD

signal triggers the start

of the frame readout.

Inactive

Row reset and read

operations begin

after the rising edge

of the VD signal.

Rising

Edge

Active

Row Reset

(start of integration)

Row Readout

Programmed Integration

Integration due to

Slave Mode Delay

Row N

The Slave Mode will become

“Active” after the last row period.

Both the row reset and row read

operations will wait until the rising

edge of the VD signal.

The row shutter and read operations will stop when the slave mode becomes active and

is waiting for the VD signal. The following should be considered when configuring the

sensor to use the slave mode:

1. The frame period (TFRAME) should be configured to be less than the period of the

input VD signal. The sensor will disregard the input VD signal if it appears before the

frame readout is finished.

2. If the sensor integration time is configured to be less than the frame period, then the

sensor will not have reset all of the sensor rows before it begins waiting for the input

VD signal. This error can be minimized by configuring the frame period to be as close

as possible to the desired frame rate (period between VD signals).

AR0141CS/D Rev. 6, 4/16 EN

30

©Semiconductor Components Industries, LLC, 2016.

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