SX8652IWLTRT Semtech, SX8652IWLTRT Datasheet - Page 2

• Manufacturer Part Number: SX8652IWLTRT
• Description: IC TOUCH SCREEN CTRLR 14DFN
• Manufacturer: Semtech
• Type: Resistiver

Specifications of SX8652IWLTRT

• Touch Panel Interface: 4-Wire, 5-Wire
• Number Of Inputs/keys: 2 Key
• Resolution (bits): 12 b
• Data Interface: Serial, SPI™
• Data Rate/sampling Rate (sps, Bps): 74k
• Voltage Reference: Internal
• Voltage - Supply: 1.65 V ~ 3.7 V
• Current - Supply: 10mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-DFN
• Voltage Supply Source: Single Supply
• Sampling Rate (per Second): 74k
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SX8652IWLTR

Section
1.
2.
3.
4.
5.
6.
7.
8.
9.
Revision V1.7/October 2010
©2010 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
Table of contents
1.1.
1.2.
1.3.
1.4.
2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
3.1.
3.2.
4.1.
4.2.
4.3.
4.4.
5.1.
5.2.
5.3.
8.1.
8.2.
8.3.
8.4.
9.1.
9.2.
9.3.
9.4.
9.5.
General Description ................................................................................................................................................. 4
Electrical Characteristics ......................................................................................................................................... 6
Functional Description ........................................................................................................................................... 10
4-wire Touch Screen Detailed Description ............................................................................................................ 12
5-wire Touch Screen Detailed Description ............................................................................................................ 14
Data Processing .................................................................................................................................................... 15
Power-Up, Reset ................................................................................................................................................... 15
Modes of Operation ............................................................................................................................................... 15
Host Interface ........................................................................................................................................................ 19
3.2.1.
3.2.2.
DFN Pinout Diagram and Marking Information (Top View).............................................................................. 4
WLCSP Pinout Diagram and Marking Information (Top View) ........................................................................ 4
Pin Description................................................................................................................................................. 5
Simplified Block Diagram ................................................................................................................................. 5
Absolute Maximum Ratings ............................................................................................................................. 6
Recommended Operating Conditions.............................................................................................................. 6
Thermal Characteristics ................................................................................................................................... 6
Electrical Specifications ................................................................................................................................... 7
Host Interface Specifications ........................................................................................................................... 9
Host Interface Timing Waveforms.................................................................................................................... 9
Device Interface and ESD protection............................................................................................................. 11
Touch Screen Operation................................................................................................................................ 12
Coordinates Measurement............................................................................................................................. 12
Pressure Measurement.................................................................................................................................. 13
Pen Detection ................................................................................................................................................ 13
Touch Screen Operation................................................................................................................................ 14
Coordinates Measurement............................................................................................................................. 14
Pen Detection ................................................................................................................................................ 14
MANual Mode ................................................................................................................................................ 16
AUTOmatic mode .......................................................................................................................................... 16
PENDET Mode .............................................................................................................................................. 17
PENTRIG Mode ............................................................................................................................................. 17
SPI Read/Write Registers .............................................................................................................................. 19
SPI Reading Channel Data............................................................................................................................ 19
SPI Host Commands ..................................................................................................................................... 20
SPI implementation and multiple Read/Write ................................................................................................ 20
Invalid Qualified Data..................................................................................................................................... 21
General Introduction ..................................................................................................................................... 10
Touchscreen interface............................................................................................................................. 11
Host Interface and Control Pins .............................................................................................................. 11
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