SX8652ICSTRT Semtech, SX8652ICSTRT Datasheet - Page 18

• Manufacturer Part Number: SX8652ICSTRT
• Description: 4/5-wire Resistive Touch Screen Controller (SPI)
• Manufacturer: Semtech

Revision V1.7/October 2010
©2010 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
All conversion
Timer expire
All channel
data read
Start channel conversion
finished
Touch Detected ?
Release Interrupt
Set timer=RATE
Set interrupt
yes
Start timer
NIRQ=0
NIRQ=1
yes
CONDIRQ=1 ?
AUTO MODE
no
Figure 16. AUTO, PENDET and PENTRIG Mode Flowchart
RegStat read
Touch Detected ?
Release Interrupt
PENDET MODE
Set interrupt
yes
NIRQ=0
NIRQ=1
15kV ESD Low Power 4-Wire / 5-Wire Resistive
Page 18
no
Touchscreen Controller with SPI Interface
All conversion
All channel
data read
Start channel conversion
finished
PENTRIG MODE
Touch Detected ?
Release Interrupt
yes
Set interrupt
NIRQ=0
NIRQ=1
no
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SX8652