•

Touch panels

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Works with thin flexible flat or curved panels with touch embedded into high resolution displays

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Works with LTPO display panels

•

Power supply scheme

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Dual supply operation 3.3 V and 1.8 V

•

Serial interface

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I2C compatible slave mode (100Kbps, 400Kbps, 1Mbps)

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3-wire and 4-wire Mode 0 SPI interface 12MHz (typ.)

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3.3V tolerant interface for I2C and SPI

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I/Os: RESETB, INTB hardware pins to host interface, 4 Digital inputs and 2 GPIOs with full

programmability

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All digital pins are fail safe

•

ESD & TLP

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High ESD on RX and TX pins (±8KV HBM) and >±3KV HBM on all other pins

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High ESD on RX and TX pins (±1KV CDM) and ±500V CDM on all other pins

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>4A TLP on all pins

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EMI

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Low EMI <-70dBm average

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Flicker avoidance techniques

Application

•

Smartphones

•

Phablets

•

Foldable phones

Description

The FingerTip FTG2-SLP provides an optimal mix of low power, small size, low external part counts and versatile

features with unmatched true multi-touch performance in a single-chip touchscreen controller for thin flexible

embedded display-touch panels.

The FingerTip FTG2-SLP uses a dedicated differential architecture with capacitance to current acquisition engine

to implement the touch sensing. Coupled with the internal processor the Fingertip touchscreen controller can

detect, classify and track 10 fingers touch with fast report rate and response times with a configurable channel

matrix consisting of total 21 TX and 40 RX channels.

The touch acquisition analog front end has a wide dynamic range able to cope with panels of different size

and configuration. This offers great flexibility to use FingerTip with new technology of embedded display-touch

panels that are thinner and flexible. The FingerTip FTG2-SLP provides support for flat or curved displays through

proprietary differential and node compensation hardware coupled with differential data processing techniques in

firmware.

The FingerTip FTG2-SLP low-noise differential capacitive analog front-end provides enhanced noise suppression

capabilities for various noise sources such as high resolution display, 3-phase noise and severe common mode

noise introduced by battery chargers.

The FingerTip FTG2-SLP uses hardware and firmware ST proprietary techniques to reduce power in active and

idle modes.

The FingerTip FTG2-SLP device incorporates multiple TX driving methods that can further boost the SNR and

report rate.

The FingerTip FTG2-SLP supports advanced features thanks to the multi-mode sensing technology. The water

rejection algorithm can detect water on the top of the screen and the device can still track one finger moving in the

water without false touch or line breaking. The device supports multi finger glove operation and 2.5mm passive

stylus. The device supports 20mm stable capacitive proximity.

FTG2-SLP

DB4705 - Rev 1

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