ak4182 AKM Semiconductor, Inc., ak4182 Datasheet - Page 11

• Manufacturer Part Number: ak4182
• Description: Touch Screen Controllers
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
scale level of digital I/O voltage is specified IOVDD.
The control command, 8 bits, provided to the AK4182 via DIN is shown in the following table. This command includes start bit,
channel selection, resolution, measurement configuration, and power-down mode. The AK4182 latches the serial command at the
rising edge of DCLK. Refer to the detailed information regarding the bit order, function, the status of driver switch, ADC input,
reference voltage as shown in Table 2 .
MS0411-E-00
A2
The digital I/O of AK4182 can operate from 1.5V IOVDD. This allows connecting the low –voltage microprocessor. The full
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
BIT
6-4
Digital I/F
Control Command
7
3
2
3
D7
S
Control Command
A1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SER/ DFR
PD1-PD0
MODE
A2-A0
Name
A0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
S
D6
A2
DFR
SER/
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
Channel Selection Bits. Analog inputs to the A/D converter and the activated driver switches are
Start Bit. This bit must be “H” because the AK4182 initiates the command recognition
selected. Please see the following table for the detail.
Resolution of A/D converter. ”L”: 12 bit output “H”: 8 bit output
Measurement Mode (Single-Ended/Differential)
Power-down Mode (reference to “ Power-down Control” )
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
XP
Status of Driver Switch
D5
A1
AK4182
OFF
OFF
OFF
OFF
OFF
OFF
XN
ON
ON
ON
ON
ON
ON
VCC=2.2V – 3.6V
Table 2 Control Command List
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
YP
D4
A0
Figure6 Digital I/F
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
YN
ON
ON
DCLK
SDIN
SDOUT
BUSY
IOVDD
11
TEMP0
YN(Z2)
TEMP1
YN(Z2)
ADC input ( ∆ AIN)
XP(Z1)
XP(Z1)
VBAT
AIN+
IN1
XP
XP
YP
YP
MODE
IOVDD=1.5V – VCC
D3
Function
Processor
GND
GND
GND
GND
GND
GND
GND
GND
AIN-
YN
XN
XN
XN
Micro-
SER/ DFR
D2
VREF+
Reference Voltage
VREF
VREF
VREF
VREF
VREF
VREF
VREF
VREF
YP
YP
YP
XP
( ∆ VREF)
VREF-
GND
GND
GND
GND
GND
GND
GND
GND
YN
XN
XN
XN
PD1
D1
Y-axis
Note
TEMP0
Y-axis
Battery Monitor
Z1 (Pen Pressure)
Z2 (Pen Pressure)
X-axis
IN1
TEMP1
NA
NA
Z1 (Pen Pressure)
Z2 (Pen Pressure)
X-axis
Sleep mode
NA
2005/08
[AK4182]
PD0
D0