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AKD4185 Datasheet(PDF) 3 Page - Asahi Kasei Microsystems

Part # AKD4185
Description  Low Power Touch Screen Controller with SPI??Interface
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AKD4185 Datasheet(HTML) 3 Page - Asahi Kasei Microsystems

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[AK4185]
PIN/FUNCTION
No.
Pin Name
I/O
Function
C2
DIN
I
Serial Data Input
Data is clocked on the rising edge of SCLK. Must keep “L” while not issuing
command.
B2
CSN
I
Chip Select Input
Enables writing data to registers when CSN = “L”.
D1
SCLK
I
Serial Clock Input
A2
VDD
-
Power Supply and External Reference Input: 1.6V ~ 3.6V
XP
I/O
Touch Panel X+ Input (4-wire, PANEL bit = “0”)
A3
BR
I/O
Touch Panel Bottom Right Input (5-wire, PANEL bit = “1”)
YP
I/O
Touch Panel Y+ Input (4-wire, PANEL bit = “0”)
B3
TR
I/O
Touch Panel Top Right Input (5-wire, PANEL bit = “1”)
XN
I/O
Touch Panel X- Input (4-wire, PANEL bit = “0”)
C3
TL
I/O
Touch Panel Top Left Input (5-wire, PANEL bit = “1”)
YN
I/O
Touch Panel Y- Input (4-wire, PANEL bit = “0”)
D3
BL
I/O
Touch Panel Bottom Right Input (5-wire, PANEL bit = “1”)
D2
VSS
-
Ground
IN
I
Auxiliary Analog Input (4-wire, PANEL bit = “0”)
A1
WIPER
I
Top Touch Panel Input (5-wire, PANEL bit = “1”)
B1
PENIRQN
O
Pen Interrupt Output (CMOS output)
The PENIRQN pin is “L” when touch-screen press is detected and CSN = “H”. This
pin is always “H” irrespective of touch-screen press when pen interrupt is not
enabled.
C1
DOUT
O
Serial A/D Data Output
Data is clocked at SCLK falling edge. This pin is Hi-Z when CSN keeps “H”.
Note 1. All digital input pins (DIN, CSN, SCLK) must not be left floating.
MS0954-E-05
2010/10
- 3 -


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