AR1020-I/SS Microchip Technology Inc., AR1020-I/SS Datasheet - Page 12

• Manufacturer Part Number: AR1020-I/SS
• Description: Touch Sensing Controller, 20 SSOP .209in TUBE
• Manufacturer: Microchip Technology Inc.

Specifications of AR1020-I/SS

• Operating Voltage: 3.3 to 5.0 Volts ±5%
• Standby Sleep Current: <1 μA
• Operating “no Touch” Current: 3.0 mA Typ.
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

7.7 Communication Interface
The desired communication type is hardware selectable by chip part number and using pin M1.
The communication interface pins are shown below for each communication type.
7.7.1 I
I
The SDO pin functions as an interrupt output. It is asserted high when data is available.
Timing diagrams are shown below.
DS41393A-Page 8
2
C operates in slave mode with 7-bit address of 0x9A.
Table 5 : Communication Selection
Table 6 : Communication Pins
Figure 7 : I
Figure 8 : I
UART
UART
Type
2
Type
SPI
C
SPI
I
I
2
2
C
C
RX, TX, VSS
SCL, SDA, SDO (Irq), VSS
SCK, SDI, SDO, SS, SIQ (Irq), VSS
Chip P/N
AR1020
AR1020
AR1010
2
2
C Timing Diagram – Receive Data
C Timing Diagram – Transmit Data
Communication Pins
M1 pin
VDD
VDD
VSS
© 2009 Microchip Technology, Inc.