
[AK4650]
MS0502-E-01
2007/04
- 8 -
No. Pin Name
B7
TSVDD
I/O
-
Function
Touch Screen Controller Power Supply Pin
Touch Screen X+ plate Voltage Supply Pin
X axis Measurement: Supplies the voltage.
Y axis Measurement: This pin is used as the input for the A/D converter.
Pen Pressure Measurement: This pin is the input to the A/D converter at Z
1
measurement.
VBAT/IN1/IN2 Measurement: OPEN state.
Pen Interrupt: pulled-up by an internal resistor (typ.50k
Ω
).
Power-down State: OPEN state. When PDN pin is “L”, XP pin is pulled-up by an
internal resistor (typ.50k
Ω
).
Touch Screen Y+ plate Voltage Supply Pin
Y axis Measurement: Supplies the voltage.
X axis Measurement: This pin is used as the input for the A/D converter.
Pen Pressure Measurement: Supplies the voltage.
VBAT/IN1/IN2 Measurement: OPEN state.
Pen Interrupt: OPEN state.
Power-down State: OPEN state.
Touch Screen X
plate Voltage Supply Pin
X axis Measurement: Supplies the voltage.
Y axis Measurement: OPEN state.
Pen Pressure Measurement: Supplies the voltage.
VBAT/IN1/IN2 Measurement: OPEN state.
Pen Interrupt: OPEN state.
Power-down State: OPEN state.
Touch Screen Y
plate Voltage Supply Pin
Y axis Measurement: Supplies the voltage.
X axis Measurement: OPEN state.
Pen Pressure Measurement: This pin is the input to the A/D converter at Z
2
measurement.
VBAT/IN1/IN2 Measurement: OPEN state.
Pen Interrupt: connected to GND.
Power-down State: OPEN state.
Touch Screen Controller Ground Pin
Analog Input Pin for Battery Monitor
Auxiliary 1 Analog Input Pin
Test 2 Pin
This pin should be floating.
Voltage Reference Input/Output
Outputs 2.5V at PMVREF bit = “1”.
Pen Interrupt Output Pin
This pin should be pulled up via a 100k
Ω
resistor.
SYNC Signal Input Pin for ADC of Touch Screen Controller
No Connect Pin
No internal bonding. This pin should be open or connected to the ground.
A7 XP
I/O
A6 YP
I/O
B6
XN
I/O
A5 YN
I/O
B5
B4
A4 IN1
TSVSS
VBAT
-
I
I
B3
TEST2
-
A3 VREF
I/O
B2
INTN
O
A2 ADEXE
I
C3
NC
-