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参数资料
| 型号： | MAX6955AAX+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/43页 |
| 文件大小： | 0K |
| 描述： | IC DRVR DSPL LED 36-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 显示器类型： | LED |
| 配置： | 7、14、16 段 |
| 接口： | I²C |
| 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： | 36-BSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 36-SSOP |
| 包装： | 带卷 (TR) |
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EVALUATION KIT AVAILABLE
AVAILAB
LE
MAX6955
2-Wire Interfaced, 2.7V to 5.5V LED Display
Driver with I/O Expander and Key Scan
General Description
The MAX6955 is a compact display driver that interfaces
microprocessors to a mix of 7-segment, 14-segment,
and 16-segment LED displays through an I 2 C-compati-
ble 2-wire serial interface. The MAX6955 drives up to 16
digits 7-segment, 8 digits 14-segment, 8 digits 16-seg-
ment, or 128 discrete LEDs, while functioning from a
supply voltage as low as 2.7V. The driver includes five
I/O expander or general-purpose I/O (GPIO) lines, some
or all of which can be configured as a key-switch reader.
The key-switch reader 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 MAX6955 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 an SPI?-compatible version, refer to the MAX6954
data sheet. An evaluation kit (EV kit) for the MAX6955 is
available.
Features
o 400kbps 2-Wire I 2 C-Compatible 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 6mm x 6mm 40-Pin TQFN
Packages
o Automotive Temperature Range Standard
Functional Diagram
Applications
Functional Diagrams
Set-Top Boxes Automotive
GPIO
AND KEY-SCAN
CONTROL
P0 TO P4/IRQ
Panel Meters
White Goods
Bar Graph Displays
Audio/Video Equipment
ISET
CURRENT
SOURCE
PWM
BRIGHTNESS
CONTROL
LED
DRIVERS
O0 TO O18
DIGIT
OSC
DIVIDER/
MULTIPLEXER
Ordering Information
OSC_OUT
COUNTER
NETWORK
CHARACTER
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX6955
GENERATOR
ROM
MAX6955AAX -40°C to +125°C
MAX6955ATL+ -40°C to +125°C
36 SSOP
40 TQFN-EP*
A36-2
T4066-5
BLINK
BLINK
CONTROL
*EP = Exposed paddle.
CONFIGURATION
+Denotes a lead-free package.
SCL
RAM
REGISTER
Pin Configurations and Typical Operating Circuits appear
at end data sheet.
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
AD0
AD1
SDA
2-WIRE SERIAL INTERFACE
is a Maxim SPI Inc.
UCSP is trademark of of Motorola, Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-2548; Rev 3; 2/08
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6955APL | 制造商:Maxim Integrated Products 功能描述:2-WIRE INTERFACED, 2.7V TO 5.5V LED DISPLAY D - Rail/Tube |
| MAX6955APL+ | 制造商:Maxim from Components Direct 功能描述:MAXIM MAX6955APL+ LED DRIVERS - Rail/Tube 制造商:Maxim Integrated Products 功能描述:LED DRVR 128SEGMENT 2.7V TO 5.5V - Rail/Tube 制造商:Maxim 功能描述:Maxim MAX6955APL+ LED Drivers |
| MAX6955ATL | 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 |
| MAX6955ATL+ | 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 |
| MAX6955ATL+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 |
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