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参数资料
| 型号： | MAX6954ATL+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/39页 |
| 文件大小： | 0K |
| 描述： | IC DRVR DSPL LED 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 显示器类型： | LED |
| 配置： | 7、14、16 段 |
| 接口： | 4 线串行 |
| 电流 - 电源： | 22mA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
| 包装： | 管件 |
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19-2460; Rev 4; 3/09
4-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
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 of 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.
Applications
Features
? High-Speed 26MHz SPI/QSPI/MICROWIRE?-
Compatible Serial Interface
? 2.7V to 5.5V Operation
? Drives Up to 16 Digits 7-Segment, 8 Digits
14-Segment, 8 Digits 16-Segment, 128 Discrete
LEDs, or a Combination of Digit Types
? Drives Common-Cathode Monocolor and Bicolor
LED Displays
? Built-In ASCII 104-Character Font for 14-Segment
and 16-Segment Digits and Hexadecimal Font for
7-Segment Digits
? Automatic Blinking Control for each Segment
? 10μA (typ) Low-Power Shutdown (Data Retained)
? 16-Step Digit-by-Digit Digital Brightness Control
? Display Blanked on Power-Up
? Slew-Rate Limited Segment Drivers for Lower EMI
? Five GPIO Port Pins Can Be Configured as Key-
Switch Reader to Scan and Debounce Up to 32
Switches with n-Key Rollover
? IRQ Output when a Key Input Is Debounced
? 36-Pin SSOP and 40-Pin DIP and TQFN Packages
? Automotive Temperature Range Standard
Functional Diagram
Set-Top Boxes
Panel Meters
Automotive
Bar Graph Displays
GPIO
AND KEY-SCAN
CONTROL
P0 TO P4
White Goods
Audio/Video Equipment
ISET
CURRENT
SOURCE
PWM
BRIGHTNESS
CONTROL
LED
DRIVERS
O0 TO O23
Ordering Information
OSC
DIVIDER/
DIGIT
MULTIPLEXER
COUNTER
PART
MAX6954AAX
TEMP RANGE
-40°C to +125°C
PIN-PACKAGE
36 SSOP
OSC_OUT
NETWORK
MAX6954
CHARACTER
GENERATOR
ROM
MAX6954APL
-40°C to +125°C
40 PDIP
MAX6954ATL+ -40°C to +125°C 40 TQFN-EP*
+Denotes a lead-free/RoHS-compliant package.
*EP = Exposed pad.
BLINK
BLINK
CONTROL
Pin Configurations and Typical Operating Circuits appear
at end of data sheet.
CLK
RAM
CONFIGURATION
REGISTER
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
CS
DIN
DOUT
4-WIRE SERIAL INTERFACE
________________________________________________________________ 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6954ATL+ | 功能描述:LED显示驱动器 2.7-5.5V LED Display Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6954ATL+T | 功能描述:LED显示驱动器 2.7-5.5V LED Display Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6954ATL-T | 功能描述:LED显示驱动器 RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6954EAX | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX6955AAX | 功能描述:LED显示驱动器 Integrated Circuits (ICs) RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
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