SX8657IWLTRT Semtech, SX8657IWLTRT Datasheet - Page 45

• Manufacturer Part Number: SX8657IWLTRT
• Description: 58T7570
• Manufacturer: Semtech

Specifications of SX8657IWLTRT

• Controller Type: Resistive Touch Screen
• Ic Interface Type: I2C, Serial
• Supply Voltage Range: 2.3V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• No. Of Pins: 20
• Resolution (bits): 12bit

ADVANCED COMMUNICATIONS & SENSING
The 3 bits CHAN(2:0) are defined in the previous table and show which channel data is referenced. The channel
data D(11:0) is of unsigned format and corresponds to a value between 0 and 4095.
The chip will return 0xFFFF in case of invalid data; this occurs when:
Rev 1 – 25
host tries to read channels which have not been converted. For example if the chip converts X and Y
and the host tries to read X, Y, Z1 and Z2.
a conversion has been done while the screen wasn’t touched , i.e. pen up (not detected).
th
July 2011
Resistive Touchscreen Controller with Proximity Sensing
45
SX8657/SX8658
Haptics Enabled 4/5-Wire
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