INFORMATION
News/ Press Release

Notification of Firmware UPDATE for TSC-50/IC and TSC5x Controller Board Series

24.Apr, 2020

Please be informed that we are updating firmware of TSC 50/IC, controller IC firmware of TSC 5x series, controller boards for resistive touch screens. Please refer to the following for details.

1. Product to be applied
Product Type Product Number
Touch Controller IC TSC-50/IC
Touch Controller Board TSC 54/RU, TSC 54/U L, TSC 54/RU F, TSC 55/RU, TSC 55/U L
2. Descriptions of the update
Controller IC: The following errors are fixed;
Fixed error1 LED2 should be turned on only by NAK response. But it is turned on by ACK response.
Fixed error2 Under the condition that coordinate data send command “0x01” is used, If touch screen is touched at the moment when number of sampling times is 20th, it will not be able to return from power saving mode by touch input afterward.
Fixed error3 After firmware is written in IC, if power becomes off during the processing of building data-flash area at initial power-on, incomplete data will remain and, it will not be able to start normally at the next booting.
Fixed error4 When there is no data in EEPROM, LED2 should be turned on when sampling rate setting command is issued (at NAK). But, it is turned on at power-on.
The following improvement is made.
Improved content: Processing of correction calculation at EERPOM calibration is improved
Controller Board: The following errors are fixed;
Fixed error Under the condition that coordinate data send command “0x01” is used, if touch screen is touched at the moment when number of sampling times is 20th, it will not be able to return from power saving mode by touch input afterward.
Controller IC/ Board: The following improvement is made.
Improved content Processing of correction calculation at EERPOM calibration is improved. (Not applied to TSC-54/U-L and TSC-55/U-L)
3.Product number after firmware update
Controller IC

Product No.: TSC-50/IC 816

Product numbers will not change. Revision indication on product label will be changed from Rev A to Rev B.

4. Marking after firmware update
5.Schedule
Controller IC
Samples for IC with updated FW (TSC-50/IC 816) Available
Last-time order date for IC with current FW (TSC-50/IC) End of February, 2021
Last-time shipment date for IC with current FW (TSC-50/IC) End of May, 2021
Controller Board

We will start to ship Rev B from May, but only after the current stocks of Rev A has been shipped.