Datasheet > LM8300HVA9

LM8300HVA9

更新时间： 2024-11-03 22:47:03

品牌	Logo	应用领域
美国国家半导体 - NSC		控制器
页数	文件大小	规格书
20页	324K
描述
Four Wire Resistive Touchscreen Controller with Brownout

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中文翻译

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数据手册

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LM8300HVA9 数据手册

PRELIMINARY

December 2003

LM8300/LM8500

Four Wire Resistive Touchscreen Controller with

Brownout

self-power down mode, the current drawn is typically less

1.0 General Description

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 SHUT-

DOWN pin low. The controller resumes normal operation

when the SHUTDOWN pin is tristated or pulled high.

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

ler. The controller samples and drives the touch screen

without the need of any external hardware. The built in 10-bit

A/D provides a 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.

The controller has an internal non-volatile memory storage

element to store configuration data such as calibration points

or controller configurations.

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

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 LLP, 44 PLCC,

48 TSSOP

3, 5 V

5 V

2.7 to 2.9 V

3.27 MHz

44 LLP, 44 PLCC,

48 TSSOP

4.17V to 4.5V 3.27, 10 MHz

n Controller configurations are stored in the internal

non-volatile storage element

n Touch pressure can be measured

2.0 Features

KEY FEATURES

n Supports 4 wire resistive touch panels

n Low power standby current typically less than 2 µA at

5.5V

n Maximum speed of 500 coordinate pairs per second

n Automatic wake up and return to standby

n 10 bit A/D

n On-chip touch screen current drivers - no external driver

required

n UART interface

APPLICATIONS

n Personal Digital Assistants

n Smart Hand-Held Devices

n Touch Screen Monitors

n Point-of-Sales Terminals

n KIOSK

n Pagers

n Cell Phones

™

COP8 is a trademark of National Semiconductor Corporation.

DS200372

www.national.com

12 3 4 5 6 7...20

中文翻译

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与LM8300HVA9相关器件

型号	品牌	获取价格	描述	数据表
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
LM8300IVA9	NSC	获取价格	Four Wire Resistive Touchscreen Controller with Brownout
LM8305	NSC	获取价格	STN LCD Display Bias Voltage source
LM8305M	NSC	获取价格	STN LCD Display Bias Voltage source
LM8305M	TI	获取价格	LIQUID CRYSTAL DISPLAY DRIVER, PDSO24, 0.300 INCH, PLASTIC, SOP-24

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