Datasheet > LM8300

LM8300

更新时间： 2024-11-05 02:58:43

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德州仪器 - TI		/
页数	文件大小	规格书
26页	437K
描述
LM8300/LM8500 Four Wire Resistive Touchscreen Controller with Brownout

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LM8300 数据手册

LM8300, LM8500

www.ti.com

SNAS158B –OCTOBER 2002–REVISED MARCH 2013

LM8300/LM8500 Four Wire Resistive Touchscreen Controller with Brownout

Check for Samples: LM8300, LM8500

FEATURES

DESCRIPTION

The LM8300/8500 is a 4-wire resistive touch screen

controller. The controller samples and drives the

touch screen without the need of any external

•

Supports 4 Wire Resistive Touch Panels

•

Low Power Standby Current Typically Less

Than 2 µA at 5.5V

hardware. The built in 10-bit A/D provides

•

Maximum Speed of 500 Coordinate Pairs per

Second

maximum of 500 coordinate pairs per second (cpps).

The data sampled from the touch screen is sent out

on the UART at a speed of 38400 bps.

•

Automatic Wake Up and Return to Standby

10 bit A/D

The controller has a power-saving mode which

causes the controller to self-power down when no

touch is detected on the touch screen for a specified

amount of time. In the self-power down mode, the

current drawn is typically less than 2 µA. The device

resumes normal operation when a touch is detected

on the touch screen or communication is detected on

the UART. In addition to the self-power down mode,

the controller can be disabled by pulling the

SHUTDOWN pin low. The controller resumes normal

operation when the SHUTDOWN pin is tristated or

pulled high.

On-chip Touch Screen Current Drivers - No

External Driver Required

•

UART Interface

Controller Configurations are Stored in the

Internal Non-volatile Storage Element

•

Touch Pressure can be Measured

APPLICATIONS

•

Personal Digital Assistants

Smart Hand-Held Devices

Touch Screen Monitors

Point-of-Sales Terminals

KIOSK

The controller has an internal non-volatile memory

storage element to store configuration data such as

calibration points or controller configurations.

Pagers

Cell Phones

Table 1. Devices included in this datasheet

Operating

Voltage

Brownout

Voltage

Operating

Frequency

I/O

Pins

Device

LM8300

LM8500

Packages

Temperature

0°C to +70°C

44 WQFN, 44 PLCC,

48 TSSOP

3, 5 V

5 V

2.7 to 2.9 V

3.27 MHz

44 WQFN, 44 PLCC,

48 TSSOP

4.17V to 4.5V

3.27, 10 MHz

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...26

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与LM8300相关器件

型号	品牌	获取价格	描述	数据表
LM8300HLQ9	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout
LM8300HLQ9/NOPB	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, QCC44, LLP-44
LM8300HMT9	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout
LM8300HVA9	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout
LM8300HVA9/NOPB	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PQCC44, PLASTIC, LCC-44
LM8300ILQ9	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout
LM8300IMT9	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout
LM8300IMT9/NOPB	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PDSO48, TSSOP-48
LM8300IMT9B	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PDSO48, PLASTIC, TSSOP-48
LM8300IMT9B/NOPB	TI	获取价格	Four Wire Resistive Touchscreen Controller with Brownout 48-TSSOP 0 to 70

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