User manual

mTouch™ AR1100 User’s Guide
DS41604A-page 12  2011 Microchip Technology Inc.
1.2.4 Electrical
TABLE 1-2: PCB – ELECTRICAL SPECIFICATIONS
Conditions Min. Typical Max. Units
Supply Voltage 3.3 5.0 V
Supply Current RS-232 (idle) 16 mA
RS-232 (touch) 18
USB (idle) 17
USB (touch) 25
Suspend Current RS232 10 µA
USB 330
Operating temperature Chip -40 125 °C
Board -25 85 °C
Resolution V
CC: +5V, VDD: Gnd 1024 x 1024 Pixels
Response Time Normal 8 ms
Waking 10
Detect Voltage Threshold 1.65 V
Touch Screen Resistance 2000 
Touch Capacitance 0 0.5 µF
Note 1: Additional literature is available from Microchip Technology Inc. – definitions,
specifications, and other general touch screen information.