UPD8873 Datasheet, PDF (19/32 Pages) NEC – (5400 ®5400) PIXELS x 3 COLOR CCD LINEAR IMAGE SENSOR

µ PD8873
SELECTION OF RESOLUTION MODE
The µ PD8873 has function of two readout modes, High Resolution Mode and Low Resolution Mode. These two
modes can be selected by φ SEL switch.
Read Mode
High Resolution Mode
Low Resolution Mode
Description
1200 dpi (Max.)
600 dpi (Max.) (even line readout mode)
φ SEL
High level
Low level
(1) High Resolution Mode
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.
(2) Low Resolution Mode
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.
Data Sheet S16614EJ2V0DS
19