AK4183_08 Datasheet, PDF (1/18 Pages) Asahi Kasei Microsystems – I2C Touch Screen Controller

[AK4183]
AK4183
I²C Touch Screen Controller
GENERAL DESCRIPTION
The AK4183 is a 4-wire resistive touch screen controller that incorporates SAR type A/D converter. The
AK4183 operates down to 2.5V supply voltage in order to connect a low voltage drive processor. The
AK4183 can detect the pressed screen location by performing two A/D conversions. In addition to
location, the AK4183 also measures touch pressure. As the package size of 10 pin TMSOP is 4.0mm x
2.9mm this is much smaller than QFN and BGA package. AK4183 is the best fit for cellular phone, PDA,
or other portable devices.
FEATURES
„ 12-bit SAR type A/D Converter with S/H circuit
„ Low Voltage Operation (2.5V ∼ 3.6V)
„ I²C bus I/F Supports
(Standard mode 100 KHz, Fast mode 400 KHz)
„ 4-wire resistive touch screen Interface
„ Pen Pressure Measurement
„ Auto Power Down
„ Continuous Read Operation
„ Low Power Consumption (91μA @Fast mode)
„ Package 10pin TMSOP
XP
SD A
YP
SC L
CAD0
XN
Control
L ogi c
YN
MS0500-E-01
VREF +
VREF-
A IN+
12b it
A IN-
ADC
(SAR type)
VCC
1
PENIRQN
PEN
IN TE RRU PT
GND
2008/12