STMPE821 datasheet(1/55 Pages) STMICROELECTRONICS

Nome de Peças	STMPE821

Descrição Electrónicos	8-bit Xpander Logic??with touchkey controller

PDF	55 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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1 / 55 page

Preliminary Data

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

June 2008

Rev 2

1/55

55

STMPE821

8-bit Xpander Logic™ with touchkey controller

Features

■ Up to 8 GPIOs

■ Up to 8 touchkey capacitive touch inputs

■ Operating voltage 1.8 - 5.5 V

■ Internal regulator

■ Interrupt output pin

■ I2C interface

■ 8 kV HBM ESD protection

■ 40 fF resolution, 128 steps capacitance

measurement (5.0 pF dynamic range)

■ Advanced data filtering (AFS)

■ Environment tracking calibration (ETC)

■ Individually adjustable touch variance (TVR)

setting for all channels

■ Adjustable environmental variance (EVR) for

optimal calibration

Applications

■ Mobile and smart phones

■ Portable media players

■ Game consoles

Description

The STMPE821 is a GPIO (general purpose

input/output) port expander able to interface a

main digital ASIC via the two-line bidirectional bus

(I2C).

A separate GPIO expander is often used in

mobile multimedia platforms to solve the

problems of the limited amount of GPIOs typically

available on the digital engine.

The STMPE821 offers great flexibility, as each I/O

can be configured as input, output or specific

functions. The device has been designed with

very low quiescent current and includes a wakeup

feature for each I/O, to optimize the power

consumption of the device.

QFN16L

(2.6x1.8 mm)

Table 1.

Device summary

Order code

Package

Packing

STMPE821QTR

QFN16L (2.6 x 1.8 mm)

Tape and reel

www.st.com

Nº de peça semelhante - STMPE821

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
STMicroelectronics	STMPE821QTR	661Kb / 55P	8-channel capacitive touch key controller 06-Apr-2009
STMicroelectronics	STMPE821	661Kb / 55P	8-channel capacitive touch key controller 06-Apr-2009

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Descrição semelhante - STMPE821

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
STMicroelectronics	STMPE2401	946Kb / 55P	24-bit Enhanced port expander with Keypad and PWM controller Xpander logic 29-May-2007
	STMPE1601	602Kb / 58P	16-bit enhanced port expander with keypad and PWM controller Xpander Logic 10-Jan-2008
	STMPE801	393Kb / 26P	8-bit port expander Xpander logic 02-Jul-2007
	STMPE1601	583Kb / 61P	16-bit enhanced port expander with keypad and PWM controller Xpander Logic 02-Jun-2008
	STMPE2403	890Kb / 63P	24-bit Enhanced port expander with Keypad and PWM controller Xpander logic 08-Jun-2007
	STMPE1208S	721Kb / 51P	Xpander Logic with 12-channel touchkey 18-Jul-2008
	STMPE1801BJR	666Kb / 60P	Xpander Logic™ 18-bit enhanced port expander with keypad controller March 2011 Rev 3
	STMPE16M31PX	669Kb / 75P	S-Touch® 16-channel touchkey controller with proximity sensing January 2011 Rev 2
	STMPE321	429Kb / 40P	3-channel capacitive touchkey controller August 2009 Rev 3
	STMPE1600	280Kb / 27P	16-bit port expander with ultra-low power consumption Xpander Logic? 05-Feb-2013

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