MAX1233ETI+ Maxim Integrated Products, MAX1233ETI+ Datasheet - Page 13
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MAX1233ETI+
Manufacturer Part Number
MAX1233ETI+
Description
IC CNTRLR TOUCH 28-TQFN
Manufacturer
Maxim Integrated Products
Type
Resistiver
Datasheet
1.MAX1234ETIT.pdf
(44 pages)
Specifications of MAX1233ETI+
Touch Panel Interface
4-Wire
Number Of Inputs/keys
1, 4 x 4 Keypad
Resolution (bits)
8, 10, 12 b
Data Interface
MICROWIRE™, QSPI™, Serial, SPI™
Data Rate/sampling Rate (sps, Bps)
50k
Voltage Reference
External, Internal
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-TQFN Exposed Pad
Applications
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Figure 1. Block Diagram
Figure 2. Touch-Screen Measurement
Controllers Include DAC and Keypad Controller
FORCE LINE
DACOUT
*AUX1
*AUX2
*ESD PROTECTED
*BAT1
*BAT2
______________________________________________________________________________________
REF
*X+
*Y+
*X-
*Y-
GND
FORCE LINE
Y+
X+
Y-
SENSE LINE
MAX1233
MAX1234
±15kV ESD-Protected Touch-Screen
+AV
BATTERY MONITOR
BATTERY MONITOR
SENSE
LINE
8-BIT
X/Y SWITCHES
DD
DAC
+IN
-IN
SENSOR
TEMP
+REF
-REF
DAC
REF
OSCILLATOR
MUX
Table 1. Maximum Input Source
Impedance
ACQUISITION
TIME (µs)
12-BIT
ADC
1.5
1.5
1.5
5.0
5.0
5.0
95
95
95
REFERENCE
C1
INTERNAL
2.5V/1.0V
C2
KEYPAD CONTROLLER
C3
REGISTERS AND
RESOLUTION
SCAN STATE
C4
AND GPIO
CONTROL
(BITS)
R1
10
12
10
12
10
12
8
8
8
R2
SERIAL
DATA
I/O
R3
R4
DURING ACQUISITION (kΩ)
MAXIMUM R
COMPLETE SETTLING
DOUT
SCLK
DIN
CS
PENIRQ
KEYIRQ
BUSY
560
470
400
2.6
2.0
1.5
23
19
15
SOURCE
FOR
13