upd8874 Renesas Electronics Corporation., upd8874 Datasheet - Page 19

• Manufacturer Part Number: upd8874
• Description: 5400 + 5400 Pixels 3 + Color Ccd Linear Image Sensor
• Manufacturer: Renesas Electronics Corporation.

SELECTION OF RESOLUTION MODE
modes can be selected by
(1) High Resolution Mode
(2) Low Resolution Mode
The
In this mode, both signals in even lines and odd lines can be read out. This mode enables 1200 dpi (Max.)
resolution with A4 size (210 × 297 mm, shorter side).
Please refer to TIMING CHART 1-1, 1-2 and 2-1.
In this mode, only signal in even lines can be read out.
This mode enables 600 dpi (Max.) resolution with A4 size.
To use intermittent reset drive enable signal charges of adjacent pixels in even line to add at the charge to voltage
conversion area. Then it can achieve low resolution with A4 size such as 300, 200 or 150 dpi.
Please refer to TIMING CHART 1-3 to 1-6, 2-2 and 2-3.
μ
PD8874 has function of two readout modes, High Resolution Mode and Low Resolution Mode. These two
High Resolution Mode
Low Resolution Mode
Read Mode
φ
SEL switch.
1200 dpi (Max.)
600 dpi (Max.) (even line readout mode)
Data Sheet S18773EJ1V0DS
Description
High level
Low level
φ
SEL
μ
PD8874
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