Datasheet > MAX7359

MAX7359

更新时间： 2024-11-09 04:41:43

品牌	Logo	应用领域
美信 - MAXIM		开关控制器
页数	文件大小	规格书
22页	247K
描述
2-Wire Interfaced Low-EMI Key Switch Controller/GPO

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MAX7359 数据手册

19-0850; Rev 0; 7/07

2-Wire Interfaced Low-EMI

Key Switch Controller/GPO

MAX7359

General Description

Features

The MAX7359 I²C interfaced peripheral provides micro-

processors with management of up to 64 key switches.

Key codes are generated for each press and release of

a key for easier implementation of multiple key entries.

Key inputs are monitored statically, not dynamically, to

ensure low-EMI operation. The switches can be metallic

or resistive (carbon) with up to 5kΩ of resistance.

♦ Optional Key Release Detection on All Keys

♦ Monitor Up to 64 Keys

♦ 1.62V to 3.6V Operation

♦ Autosleep and Autowake to Minimize Current

Consumption

The MAX7359 features autosleep and autowake to fur-

ther minimize the power consumption of the device.

The autosleep feature puts the device in a low-power

state (1µA typ) after a sleep timeout period. The

autowake feature configures the MAX7359 to return to

normal operating mode from sleep upon a key press.

♦ Under 1µA Sleep Current

♦ FIFO Queues Up to 16 Debounced Key Events

♦ Key Debounce Time User Configurable from 9ms

to 40ms

♦ Low-EMI Design Uses Static Matrix Monitoring

The key controller debounces and maintains a FIFO of

key-press and release events (including autorepeat, if

enabled). An interrupt (INT) output can be configured to

alert key presses either as they occur, or at maximum rate.

♦ Hardware Interrupt at the FIFO Level or at the End

of Definable Time Period

♦ Up to Seven Open-Drain Logic Outputs Available

Any of the column drivers (COL2/PORT2–COL7/PORT7)

or the INT, if not used, can function as a general-pur-

pose output (GPO).

Capable of Driving LEDs

♦ 400kbps, 5.5V-Tolerant, 2-Wire Serial Interface

♦ Selectable 2-Wire, Serial-Bus Timeout

♦ Four I²C Address Choices

♦ Small, 24-Pin TQFN Package (3.5mm x 3.5mm)

Ordering Information

The MAX7359 is offered in a small 24-pin TQFN (3.5mm x

3.5mm) package for cell phones, pocket PCs, and other

portable consumer electronic applications. The MAX7359

operates over the -40°C to +85°C temperature range.

Applications

Cell Phones

TEMP

RANGE

PKG

CODE

PART

PIN-PACKAGE

PDAs

Handheld Games

Portable Consumer Electronics

-40°C to

+85°C

24 TQFN-EP*

(3.5mm x 3.5mm)

MAX7359ETG+

T243A3-1

+Denotes a lead-free package.

*EP = Exposed paddle.

Typical Application Circuit

INPUT

1.62V TO 3.6V

MAX7359

COL_

SWITCH

ARRAY,

UP TO 64

SWITCHES

ROW_

SCL

SDA

INT

AD0

GND

Pin Configuration appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...22

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与MAX7359相关器件

型号	品牌	获取价格	描述	数据表
MAX7359_09	MAXIM	获取价格	2-Wire Interfaced Low-EMI Key Switch Controller/GPO
MAX7359BETG+	MAXIM	获取价格	Microprocessor Circuit, BICMOS, TQFN-24
MAX7359BETG+T	MAXIM	获取价格	Microprocessor Circuit, BICMOS, TQFN-24
MAX7359ETG+	MAXIM	获取价格	2-Wire Interfaced Low-EMI Key Switch Controller/GPO
MAX7359ETG+T	MAXIM	获取价格	Microprocessor Circuit, BICMOS, TQFN-24
MAX7359EWA+T	MAXIM	获取价格	Microprocessor Circuit, BICMOS, WLP-25
MAX735C/D	MAXIM	获取价格	-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM Regulators
MAX735CPA	ROCHESTER	获取价格	2A SWITCHING REGULATOR, 160kHz SWITCHING FREQ-MAX, PDIP8, PLASTIC, DIP-8
MAX735CPA	MAXIM	获取价格	-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM Regulators
MAX735CPA+	MAXIM	获取价格	Switching Regulator, Current-mode, 2A, 160kHz Switching Freq-Max, CMOS, PDIP8, PLASTIC, DI

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