AR1000_16 Datasheet, PDF (46/61 Pages) Microchip Technology – AR1000 Series Resistive Touch Screen Controller

AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
11.1 Minimum Operating Voltage
The AR1000 series controller will operate down to 2.5V ± 5%. Touch performance will be optimized by using the
highest allowable voltage for the design.
The PICkit™ Serial included in the AR1000 Development kit supports 3V-5V range of operation.
11.2 AR1000 Electrical Characteristics
Operating Voltage: 2.5 ≤ VDD ≤ 5.25V
Function
M1
M2
SCL/SCK
TX
SDI
SDO
Pin
M1
M2
SCL/SCK/TX
SCL/SCK/TX
SDI/SDA/RX
SDO
Input
VSS ≤ VIL ≤ 0.15*VDD
(0.25*VDD + 0.9V) ≤ VIH ≤ VDD
VSS ≤ VIL ≤ 0.15*VDD
(0.25*VDD + 0.9V) ≤ VIH ≤ VDD
VSS ≤ VIL ≤ 0.2*VDD
0.8*VDD ≤ VIH ≤ VDD
—
VSS ≤ VIL ≤ 0.2*VDD
0.8*VDD ≤ VIH ≤ VDD
—
Output
—
—
—
VSS ≤ VOL(1) ≤ (1.2V – 0.15*VDD)⁽²⁾
(1.25*VDD – 2.25V)⁽³⁾ ≤ VOH(1) ≤ VDD
—
VSS ≤ VOL(1) ≤ (1.2V – 0.15*VDD)⁽²⁾
(1.25*VDD – 2.25V)⁽³⁾ ≤ VOH(1) ≤ VDD
SIQ
SIQ
—
SDA
SDI/SDA/RX
VSS ≤ VIL ≤ 0.2*VDD
0.8*VDD ≤ VIH ≤ VDD
RX
SDI/SDA/RX VSS ≤ VIL ≤ 0.2*VDD
0.8*VDD ≤ VIH ≤ VDD
SS
SS
VSS ≤ VIL ≤ 0.2*VDD
0.8*VDD ≤ VIH ≤ VDD
Note 1: These parameters are characterized but not tested.
2: At 10 mA.
3: At -4 mA.
VSS ≤ VOL(1) ≤ (1.2V – 0.15*VDD)⁽²⁾
(1.25*VDD – 2.25V)⁽³⁾ ≤ VOH(1) ≤ VDD
Open-drain
—
—
DS40001393C-page 46
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