Datasheet > UR5HC703-700

UR5HC703-700

更新时间： 2024-09-15 23:40:43

品牌	Logo	应用领域
其他 - ETC		手持设备编码器
页数	文件大小	规格书
10页	80K
描述
SerialCoder 700 - Very low-power serial-interface keyboard encoder for hand-held devices

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UR5HC703-700 数据手册

SerialCoder™ 700 UR5HC703-700

Extremely Low-Power Keyboard

Encoder Interfaces RS-232

HID & SYSTEM MANAGEMENT PRODUCTS, KEYCODER™ FAMILY

PRELIMINARY

DESCRIPTION

FEATURES

The SerialCoder™ 700

• 8 x 14 keyboard matrix encoding

• IC is independent of the keyboard

layout

• Extremely low-power operation,

transparent to the host

• Typical current consumption of less

than 1 µA at room temperature; 10

µA at 85°C

• 9600 Baud 8N1 serial data format

• Direct connection to RS-232

signals from the host UART

• Simple, proprietary serial protocol

• Robust algorithm for ghost-key

elimination

UR5HC703-700 is an extremely low-

power, “off-the-shelf” serial keyboard

encoder. Robust, tiny and flexible,

the IC is a good match for any

application where the use of

complicated keyboard protocols are

not required and where

• Self-Power Management™, sleeps

between keystrokes

asynchronous serial interface

hardware is available.

APPLICATIONS

• Built-in keyboards for personal

digital assistant (PDA) and hand-

held PC (H/PC) devices

• Add-on accessory keyboards for

PDA and H/PC devices

• Portable personal computers

• Instrumentation

• Remote control

The SerialCoder™ 700 provides

Self-Power Management™ and

draws its power entirely from the

host device. It is ideal for use in

add-on keyboards for handheld and

cellular / web phones and other

portable applications.

• Cellular phones

PIN ASSIGNMENTS

Self-Power Management™ is

transparent to the host. Power

consumption is reduced to just the

circuit’s leakage when all keys are

released. The average current

consumption is less than 1 µA at

room temperature and 10 µA at

85°C.

ROW6

ROW5

ROW4

ROW3

ROW2

ROW1

ROW0

RxD

COL3

COL4

COL5

COL6

VDD2

RESET

VSS2

VDD

If a key or group of keys stays in the

depressed position for ten minutes

(with no other keyboard activity), the

IC shuts down to save power.

UR5HC703-700-FG

LQFP

The SerialCoder™ 700 is simple to

implement. It requires few external

components and utilizes a tiny, low-

profile 32-pin LQFP package that

measures 7mm x 7mm.

SerialCoder, KeyCoder, and Self-Power

Management are trademarks of Semtech

Corporation. All other trademarks belong to their

respective companies.

DOC5-703-700-DS-105

www.semtech.com

12 3 4 5 6 7...10

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与UR5HC703-700相关器件

型号	品牌	获取价格	描述	数据表
UR5HC703-700-FG	SEMTECH	获取价格	Microprocessor Circuit, CMOS, PQFP32, 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
UR5HC703FG-600-FG	SEMTECH	获取价格	Encoder, CMOS, PQFP32
UR5HC703-IR20	ETC	获取价格	SerialCoder IR - Very low-power serial-infrared-interface keyboard encoder for accessory k
UR5HCCDI-CFB	SEMTECH	获取价格	Microprocessor Circuit, CMOS, PQFP44
UR5HCCDI-CP	SEMTECH	获取价格	Microprocessor Circuit, CMOS, PDIP40
UR5HCCDI-FB	SEMTECH	获取价格	Microprocessor Circuit, CMOS, PQFP44
UR5HCCDI-FN	SEMTECH	获取价格	Microprocessor Circuit, CMOS, PQCC44
UR5HCCDI-P	SEMTECH	获取价格	Microprocessor Circuit, CMOS, PDIP40
UR5HCDEC-CFB	SEMTECH	获取价格	Microprocessor Circuit, CMOS, PQFP44
UR5HCDEC-CFN	SEMTECH	获取价格	Microprocessor Circuit, CMOS, PQCC44

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