MAX1233ETI+T Maxim Integrated Products, MAX1233ETI+T Datasheet - Page 35

• Manufacturer Part Number: MAX1233ETI+T
• Description: IC CNTRLR TOUCH 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Resistiver

Specifications of MAX1233ETI+T

• 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 20. Scan Mode Flowchart
Controllers Include DAC and Keypad Controller
NO
NO
______________________________________________________________________________________
STORE BATTERY INPUT 1 IN
POWER UP REFERENCE
AUTO POWER-DOWN
CONTROL REGISTER
AVERAGING DONE?
BATTERY INPUT 1
BAT1 REGISTER
REFERENCE IN
HOST WRITES
START CLOCK
POWER UP
SET BUSY
CONVERT
IS DATA
IS ADC
MODE?
ADC
LOW
ADC
BATTERY VOLTAGE, AUXILIARY INPUT, AND TEMPERATURE INPUT SCAN ([A/D3:A/D0] = 1011)
YES
YES
±15kV ESD-Protected Touch-Screen
NO
NO
NO
STORE AUXILIARY INPUT 1 IN
STORE AUXILIARY INPUT 2 IN
STORE BATTERY INPUT 2 IN
AUXILIARY INPUT 1
AUXILIARY INPUT 2
AVERAGING DONE?
AVERAGING DONE?
AVERAGING DONE?
BATTERY INPUT 2
AUX1 REGISTER
AUX2 REGISTER
BAT2 REGISTER
CONVERT
CONVERT
CONVERT
IS DATA
IS DATA
IS DATA
YES
YES
YES
NO
NO
STORE TEMPERATURE INPUT 1 IN
STORE TEMPERATURE INPUT 2 IN
POWER DOWN REFERENCE
TEMPERATURE INPUT 1
TEMPERATURE INPUT 2
AVERAGING DONE?
AVERAGING DONE?
TURN OFF CLOCK
TEMP1 REGISTER
TEMP2 REGISTER
SET BUSY HIGH
POWER DOWN
CONVERT
CONVERT
IS DATA
IS DATA
ADC
YES
YES
DONE
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