MXB7843EEE-T Maxim Integrated, MXB7843EEE-T Datasheet - Page 7

• Manufacturer Part Number: MXB7843EEE-T
• Description: Touch Screen Converters & Controllers
• Manufacturer: Maxim Integrated
• Type: Resistive Touch Controllersr

Specifications of MXB7843EEE-T

• Input Type: 1 TSC
• Data Rate: 125 KSPS
• Resolution: 8 bit, 12 bit
• Interface Type: 3-Wire, 4-Wire, QSPI, SPI
• Supply Voltage: 2.375 V to 5.25 V
• Supply Current: 270 uA
• Operating Temperature: - 40 C to + 85 C
• Package / Case: QSOP-16
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: -40 C
• Mounting Style: SMD/SMT
• Supply Voltage - Max: 5.25 V
• Supply Voltage - Min: 2.375 V

PIN
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
PENIRQ
NAME
DOUT
DCLK
BUSY
GND
V
REF
V
DIN
IN3
IN4
_______________________________________________________________________________________
X+
Y+
CS
X-
Y-
DD
DD
2.375V to 5.25V, 4-Wire Touch-Screen
Positive Supply Voltage. Connect to pin 10.
X+ Position Input, ADC Input Channel 1
Y+ Position Input, ADC Input Channel 2
X- Position Input
Y- Position Input
Ground
Auxiliary Input to ADC; ADC Input Channel 3
Auxiliary Input to ADC; ADC Input Channel 4
Voltage Reference Input. Reference voltage for analog-to-digital conversion. Apply a reference
voltage between 1V and V
Positive Supply Voltage, +2.375V to +5.25V. Bypass with a 1µF capacitor. Connect to pin 1.
Pen Interrupt Output. Open anode output. 10kΩ to 100kΩ pullup resistor required to V
Serial Data Output. Data changes state on the falling edge of DCLK. High impedance when CS is
HIGH.
Busy Output. BUSY pulses high for one clock period before the MSB decision. High impedance when
CS is HIGH.
Serial Data Input. Data clocked in on the rising edge of DCLK.
Active-Low Chip Select. Data is only clocked into DIN when CS is low. When CS is high, DOUT and
BUSY are high impedance.
Serial Clock Input. Clocks data in and out of the serial interface and sets the conversion speed (duty
cycle must be 40% to 60%).
DD
. Bypass REF to GND with a 0.1µF capacitor.
FUNCTION
Pin Description
Controller
DD
.
7