SX8650

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Page 8

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

World’s Lowest Power & Smallest Footprint 4-wire

Resistive Touchscreen Controller with 15kV ESD

Revision V2.19/October 2010

©2010 Semtech Corp.

All values are valid within the recommended operating conditions unless otherwise specified.

Input leakage current

-1

1

uA

Startup

Power-up time

(Delay

Time between rising edge VDD and

rising NIRQ

1

ms

Reset

Reset low time

50

ns

ADC

Resolution

12

bits

Offset

±1

LSB

Gain error

At full scale

0.5

LSB

Differential nonlinearity

±1

LSB

Integral nonlinearity

±1.5

LSB

Resistors

X+, X-, Y+, Y- resistance

Touch Pad Biasing Resistance

5

Ohm

Pen detect resistance

100

kOhm

200

kOhm

50

kOhm

25

kOhm

External components

recommendations

Capacitor between VDD, GND

Type 0402, tolerance +/-50%

0.1

uF

1.

SCL, SDA, NRST and NIRQ can be pulled up to a potential higher than the chip VDD but must not exceed the maximun voltage of 3.7V.

Parameter

Symbol

Conditions

Min.

Typ

Max

Unit