STMPE812 datasheet(42/51 Pages) STMICROELECTRONICS

Nome de Peças	STMPE812

Descrição Electrónicos	S-Touch® enhanced 4-wire resistive touchscreen controller with PWM

PDF	51 Pages

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Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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42 / 51 page

Electrical specification

STMPE812

42/51

Doc ID 17732 Rev 3

Treset

Minimum RESET pulse

width

4–

–

µs

Tin

Minimum INPUT width

required for GPIO state

transition

4–

–

µs

Fosc

Internal RC OSC

frequency

VCC = 1.8 V

900

1200

1500

kHz

Fosc

Internal RC OSC

frequency

VCC = 3.3 V

900

1200

1500

kHz

Table 21.

ADC specification

Parameter

Test conditions

Min

Typ

Max

Unit

Full-scale input span

–

VCC

Absolute input range

-0.2

–

VCC+0.

Input capacitance

–

Leakage current

–

0.1

–

µA

Resolution

–

Bits

No missing codes

–

Bits

Integral linearity error

–

±4

–

LSB

Offset error

–

±5

LSB

Gain error

–

±14

±18

LSB

Noise

Including internal

Vref

–50

–

uVrms

Power supply rejection ratio

–

Throughput rate

–

180

–

Ksamples/s

Table 22.

Switch drivers specification

Parameter

Test conditions

Min

Typ

Max

Unit

ON resistance X+, Y+

VCC =1.65-

3.6 V

–7

OHM

ON resistance X-, Y-

VCC =1.65-

3.6 V

–7

OHM

Drive current (at 5 mA limit)

VCC = 1.65 -3.6 V

X+/X- or Y+/Y-

shorted together

externally

––

Table 20.

AC electrical characteristics (-40 °C to 85 °C)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

Obsolete

Product(s)

- Obsolete

Product(s)

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