This is a 320xRGBx240, 3.5 inch diagonal, full-color QVGA graphic TFT display module. Several interfaces such as SPI, and 18/16/9/8 bit parallel, allow compatibility with many different microcontroller configurations. It has an integrated SSD2119 or compatible display controller and 4-wire resistive touch panel. The white LED backlight has the anode and cathode pins brought out on the FPC connector. The 50 pin FPC mates with standard 0.5mm ZIF sockets such as HFJ150CT-ND and HFK150CT-ND, both readily available from Digi-Key. The touch panel FPC mates with 1mm pitch spaced ZIF sockets like 609-1883-1-ND or 609-1886-1-ND available from Digi-Key.
Glass characteristics change requiring single command initialization change for optimal contrast.
Description:
PCN for CFAF320240F family of products due to a change in panel vendors.
Reason:
In order to maintain uninterrupted supply of this module, we changed vendors for the LCD panel so that lead times would not be affected.
Impact:
Because of the slightly different characteristics of the panel, a single command in the initialization of the module should be changed so that optimal contrast can be achieved.
No other changes are necessary.
Recommendation:
Change the following registers from:
write_command(0x001E); // Power Control 5
write_data(0x00B7); // Page 53 of SSD2119 datasheet
to
write_command(0x001E); // Power Control 5
write_data(0x00BE); // Page 53 of SSD2119 datasheet
and contrast should be optimal for the display.
Availability:
Immediately for non-touchscreen modules, with a cut-in for the modules with a touchscreen over the next several months.
Price Change:
Pricing is not affected by this change.
For reference only. For design purposes, please use the specifications in the datasheet.
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