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参数资料
| 型号： | TC255 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, CDIP8 |
| 封装： | 2.54 MM PITCH, WINDOWED, CERAMIC, DIP-8 |
| 文件页数： | 14/18页 |
| 文件大小： | 242K |
| 代理商： | TC255 |
TC255
336-
× 244-PIXEL CCD IMAGE SENSOR
SOCS034C – FEBRUARY 1993 – REVISED NOVEMBER 1994
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
image-clear line
During start-up or electronic-shutter operations, it is necessary to clear the image area of charge without
transferring it to the storage area. In such situations, the two image-area gates are clocked 244 times without
clocking the storage-area gate. The charge in the image area is then cleared through the image-clear line.
storage area
After exposure, the image-area charge packets are transferred through the image-clear line to the storage area.
The stored charge is then transferred line by line into the serial register for readout. Figure 3 illustrates the timing
to 1) transfer the image to the storage area and 2) to transfer each line from the storage area to the serial register.
serial register
After each line is clocked into the serial register, it is read out pixel by pixel. Figure 3 illustrates the serial-register
clock sequence.
SAG
SRG
IAG1
IAG2
SAG
Expanded Section of Parallel Transfer
1)
2)
3)
1) End of serial readout of line
2) Transfer of new line to serial register
3) Beginning of readout of new line
244 Cycles
Composite
Blank
ABG
IAG1
IAG2
SAG
SRG
339 Cycles
SRG
t = 80 ns
Figure 3. Timing Diagram
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