Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼
Nombre de pieza
         Descripción


MAX6954 Datasheet(Hoja de datos) 1 Page - Maxim Integrated Products

No. de Pieza. MAX6954
Descripción  4-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan
Descarga  38 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  MAXIM [Maxim Integrated Products]
Página de inicio  http://www.maxim-ic.com
Logo 

 
 1 page
background image
General Description
The MAX6954 is a compact display driver that inter-
faces microprocessors to a mix of 7-segment, 14-seg-
ment, and 16-segment LED displays through an SPI™-
or QSPI™-compatible 4-wire serial interface. The serial
interface may be cascaded through multiple devices.
The MAX6954 drives up to 16 digits 7-segment, 8 digits
14-segment, 8 digits 16-segment, or 128 discrete
LEDs, while functioning from a supply voltage as low as
2.7V. The driver includes five I/O expander (or GPIO)
lines, some or all or which may be configured as a key-
switch reader, which automatically scans and
debounces a matrix of up to 32 switches.
Included on chip are full 14- and 16-segment ASCII
104-character fonts, a hexadecimal font for 7-segment
displays, multiplex scan circuitry, anode and cathode
drivers, and static RAM that stores each digit. The max-
imum segment current for the display digits is set using
a single external resistor. Digit intensity can be inde-
pendently adjusted using the 16-step internal digital
brightness control. The MAX6954 includes a low-power
shutdown mode, a scan-limit register that allows the
user to display from 1 to 16 digits, segment blinking
(synchronized across multiple drivers, if desired), and a
test mode, which forces all LEDs on. The LED drivers
are slew-rate limited to reduce EMI.
For a 2-wire interfaced version, refer to the MAX6955*
data sheet. An evaluation kit* (EV kit) for the MAX6955
is available.
*Future product—contact factory for availability.
Applications
Set-Top Boxes
Automotive
Panel Meters
Bar Graph Displays
White Goods
Audio/Video Equipment
Features
o High-Speed 26MHz SPI/QSPI/MICROWIRE™-
Compatible Serial Interface
o 2.7V to 5.5V Operation
o Drives Up to 16 Digits 7-Segment, 8 Digits
14-Segment, 8 Digits 16-Segment, 128 Discrete
LEDs, or a Combination of Digit Types
o Drives Common-Cathode Monocolor and Bicolor
LED Displays
o Built-In ASCII 104-Character Font for 14-Segment
and 16-Segment Digits and Hexadecimal Font for
7-Segment Digits
o Automatic Blinking Control for each Segment
o 10µA (typ) Low-Power Shutdown (Data Retained)
o 16-Step Digit-by-Digit Digital Brightness Control
o Display Blanked on Power-Up
o Slew-Rate Limited Segment Drivers for Lower EMI
o Five GPIO Port Pins Can Be Configured as Key-
Switch Reader to Scan and Debounce Up to 32
Switches with n-Key Rollover
o IRQ Output when a Key Input Is Debounced
o 36-Pin SSOP and 40-Pin DIP Packages
o Automotive Temperature Range Standard
4-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-2460; Rev 1; 10/02
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
TEMP RANGE
PIN-PACKAGE
MAX6954AAX
-40°C to +125°C
36 SSOP
MAX6954APL
-40°C to +125°C
40 PDIP
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Pin Configurations and Typical Operating Circuits appear
at end of data sheet.
ISET
OSC
OSC_OUT
BLINK
CLK
CS
DIN
DOUT
4-WIRE SERIAL INTERFACE
RAM
BLINK
CONTROL
CONFIGURATION
REGISTER
CHARACTER
GENERATOR
ROM
CURRENT
SOURCE
DIVIDER/
COUNTER
NETWORK
DIGIT
MULTIPLEXER
PWM
BRIGHTNESS
CONTROL
GPIO
AND KEY-SCAN
CONTROL
LED
DRIVERS
O0 TO O23
P0 TO P4
MAX6954
Functional Diagram




Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38 


Datasheet Download



Número de Pieza relacionado

Número de PiezaDescripción de ComponentesHtml ViewFabricante
MAX69552-Wire Interfaced 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan 1 2 3 4 5 MoreMaxim Integrated Products
MAX69524-Wire Interfaced 2.7V to 5.5V 4-Digit 5 .7 Matrix LED Display Driver 1 2 3 4 5 MoreMaxim Integrated Products
MAX69562-Wire-Interfaced 2.5V to 5.5V 20-Port or 28-Port LED Display Driver and I/O Expander 1 2 3 4 5 MoreMaxim Integrated Products
MAX69532-Wire Interfaced 2.7V to 5.5V 4-Digit 5 x 7 Matrix LED Display Driver 1 2 3 4 5 MoreMaxim Integrated Products
MAX69574-Wire-Interfaced 2.5V to 5.5V 20-Port and 28-Port LED Display Driver and I/O Expander 1 2 3 4 5 MoreMaxim Integrated Products
ML922727-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming ADC and Key scan 1 2 3 4 5 MoreOKI electronic componets
HD66727Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function 1 2 3 4 5 MoreHitachi Semiconductor
UPD17202AGF-0114-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND KEY SCAN CIRCUIT FOR FPC FRONT PANEL CONTROLLER 1 2 3 4 5 MoreNEC
MAX69582-Wire Interfaced 3V to 5.5V 4-Digit 9-Segment LED Display Drivers with Keyscan 1 2 3 4 5 MoreMaxim Integrated Products
ML92045 X 7 Dot Character X 24-Digit X 2-Line Display Controller/Driver with Character RAM Built-in Key Scan 1 2 3 4 5 MoreOKI electronic componets

Enlace URL

¿ALLDATASHEET es útil para Ud.?  [ DONATE ]  

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl