Rainbow-electronics MAX7360 Manuel d'utilisateur télécharger pdf

_______________________________________________________________ Maxim Integrated Products 1

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.

C-Interfaced Key-Switch Controller and LED

Driver/GPIOs with Integrated ESD Protection

MAX7360

General Description

The MAX7360 I

C-interfaced peripheral provides micro-

processors with management of up to 64 key switches,

with an additional eight LED drivers/GPIOs that feature

constant-current, PWM intensity control, and rotary

switch control options.

The key-switch drivers interface with metallic or resistive

switches with on-resistances up to 5kI. Key inputs

are monitored statically, not dynamically, to ensure

low-EMI operation. The MAX7360 features autosleep

and autowake modes to further minimize the power

consumption of the device. The autosleep feature puts

the device in a low-power state (1FA typ) after a sleep

timeout period. The autowake feature configures the

MAX7360 to return to normal operating mode from sleep

upon a keypress.

The key controller debounces and maintains a FIFO of

keypress and release events (including autorepeat, if

enabled). An interrupt (INTK) output can be configured

to alert keypresses, as they occur, or at maximum rate.

There are eight open-drain I/O ports, which can be used

to drive LEDs. The maximum constant-current level for

each open-drain port is 20mA. The intensity of the LED

on each open-drain port can be individually adjusted

through a 256-step PWM control. An input port pair

(PORT6, PORT7) can be configured to accept 2-bit gray

code inputs from a rotary switch. In addition, if not used

for key-switch control, up to six column pins can be used

as general-purpose open-drain outputs (GPOs) for LED

drive or logic control.

The MAX7360 is offered in a 40-pin (5mm x 5mm) thin

QFN package with an exposed pad, and a small 36-bump

wafer level package (WLP) for cell phones, pocket PCs,

and other portable consumer electronic applications. The

MAX7360 operates over the -40NC to +85NC extended

temperature range.

Applications

Cell Phones

PDAs

Handheld Games

Portable Consumer Electronics

Printers

Instrumentation

Features

S Integrated ESD Protection

Q8kV IEC 61000-4-2 Contact Discharge

Q15kV IEC 61000-4-2 Air-Gap Discharge

S +14V Tolerant, Open-Drain I/O Ports Capable of

Constant-Current LED Drive

S Rotary Switch-Capable Input Pair (PORT6, PORT7)

S 256-Step PWM Individual LED Intensity Control

S Individual LED Blink Rates and Common LED

Fade In/Out Rates from 256ms to 4096ms

S FIFO Queues Up to 16 Debounced Key Events

S User-Configurable Key Debounce (9ms to 40ms)

S Keyscan Uses Static Matrix Monitoring for Low

EMI Operation

S +1.62V to +3.6V Operation

S Monitors Up to 64 Keys

S Key-Switch Interrupt (INTK) on Each Debounced

Event/FIFO Level, or End of Definable Time Period

S Port Interrupt (INTI) for Input Ports for Special-Key

Functions

S 400kbps, +5.5V Tolerant 2-Wire Serial Interface

with Selectable Bus Timeout

S Four I

C Address Choices

19-4566; Rev 0; 4/09

Ordering Information

Simplfied Block Diagram

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

**Future product—contact factory for availability.

Pin Configurations appear at end of data sheet.

MAX7360

AD0

PORT7

PORT6

PORT0

COL_(8x)

ROW_(8x)

INTK

INTI

SDA

SCL

ROTARY

SWITCH

+14V

8 x 8

+1.8V

PART TEMP RANGE PIN-PACKAGE

MAX7360ETL+ -40°C to +85°C 40 TQFN-EP*

MAX7360EWX+** -40°C to +85°C 36 WLP

EVALUATION KIT

AVAILABLE

1 2 3 4 5 6 ... 30 31

Résumé du contenu

Page 1 - AVAILABLE

_______________________________________________________________ Maxim Integrated Products 1For pricing, delivery, and ordering information, pleas

Page 2 - ABSOLUTE MAXIMUM RATINGS

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736010 ________________________________________________

Page 3

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

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I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736012 ________________________________________________

Page 5 - NC, unless otherwise noted.)

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

Page 6

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736014 ________________________________________________

Page 7

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

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I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736016 ________________________________________________

Page 9

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

Page 10 - Key-Scan Controller

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736018 ________________________________________________

Page 11

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

Page 12

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Page 13 - Serial Addressing

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736020 ________________________________________________

Page 14 - Acknowledge

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

Page 15 - Bus Timeout

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736022 ________________________________________________

Page 16 - Table 4. Autoincrement Rules

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

Page 17 - KEY-SWITCH MATRIX

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736024 ________________________________________________

Page 18 - ESD Protection

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

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I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

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I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

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I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX736030 ________________________________________________

Page 25

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360Maxim cannot assume responsibility for use of any circu

Page 26

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX73604 _________________________________________________

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I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

Page 28 - Table 21. I

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX73606 _________________________________________________

Page 29

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

Page 30 - TOP VIEW

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX73608 _________________________________________________

Page 31 - PROCESS: BiCMOS

I2C-Interfaced Key-Switch Controller and LED Driver/GPIOs with Integrated ESD ProtectionMAX7360_______________________________________________________

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Rainbow-electronics MAX7360 Manuel d'utilisateur

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