ACS-1024-LG Photon Vision Systems, Inc., ACS-1024-LG Datasheet - Page 17

• Manufacturer Part Number: ACS-1024-LG
• Description: Image Sensor, CMOS|CCD, 1026x1026 Pixels, 132pin LCC
• Manufacturer: Photon Vision Systems, Inc.

TIMING DIAGRAMS FOR MODES OF OPERATION (MASTER MODE)
SNAPSHOT SHUTTER, DESTRUCTIVE:
Figure 7, The Snapshot and Transfer shutters begin the count down together at the start of every cycle. Pixels are reset
when snapshot is zero and transferred to hold when transfer is zero, immediately reading the data. Cycles cannot be
interrupted by the !stop bit.
ROLLING SHUTTER, DESTRUCTIVE:
In figure 9, transfer is equal to zero. The frame time is the time it takes the read a region, and each read
takes place immediately after the last one. Rolling hold-off would reduce integration time, but have no
effect on frame time. In the second case, where transfer is not zero, each read would not occur until the
transfer countdown reached zero, extending the integration time.
SNAPSHOT SHUTTER, NON-DESTRUCTIVE:
Figure 8 Readouts occur immediately after the transfer countdown reaches zero. The hold sites are not reset,
allowing for non-destructive readout. The array will continue to transfer charge to the hold site and increase the
brightness of the image. This can be sampled anytime.
Figure 6 shows row timing
REGION OF INTEREST READOUT: Regions of Interest are read out in the order that they are
programmed. Once a row stop value of zero is encountered, readout ends. The only delay between
readouts is the regular retrace.
Product DATASHEET ACS PDS0003 Subject to change without notice. Page 17 of 26
Photon Vision Systems, Inc.
Copyright© 2002 Rev A