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参数资料
| 型号： | MAX7221CWG+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC DRVR DSPLY LED 8DIG 24SOIC |
| 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 段 + DP |
| 接口： | 4 线串行 |
| 数字或字符： | 8 位数字 |
| 电流 - 电源： | 330mA |
| 电源电压： | 4 V ~ 5.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
AVAILAB
LE
MAX7219/MAX7221
Serially Interfaced, 8-Digit LED Display Drivers
General Description
The MAX7219/MAX7221 are compact, serial input/out-
put common-cathode display drivers that interface
microprocessors (μPs) to 7-segment numeric LED dis-
plays of up to 8 digits, bar-graph displays, or 64 indi-
vidual LEDs. Included on-chip are a BCD code-B
decoder, multiplex scan circuitry, segment and digit
drivers, and an 8x8 static RAM that stores each digit.
Only one external resistor is required to set the seg-
ment current for all LEDs. The MAX7221 is compatible
with SPI?, QSPI?, and MICROWIRE?, and has slew-
rate-limited segment drivers to reduce EMI.
A convenient 4-wire serial interface connects to all
common μPs. Individual digits may be addressed and
updated without rewriting the entire display. The
MAX7219/MAX7221 also allow the user to select code-
B decoding or no-decode for each digit.
The devices include a 150μA low-power shutdown
mode, analog and digital brightness control, a scan-
Features
? 10MHz Serial Interface
? Individual LED Segment Control
? Decode/No-Decode Digit Selection
? 150μA Low-Power Shutdown (Data Retained)
? Digital and Analog Brightness Control
? Display Blanked on Power-Up
? Drive Common-Cathode LED Display
? Slew-Rate Limited Segment Drivers
for Lower EMI (MAX7221)
? SPI, QSPI, MICROWIRE Serial Interface (MAX7221)
? 24-Pin DIP and SO Packages
Ordering Information
limit register that allows the user to display from 1 to 8
digits, and a test mode that forces all LEDs on.
For applications requiring 3V operation or segment
blinking, refer to the MAX6951 data sheet.
Applications
PART
MAX7219 CNG
MAX7219CWG
MAX7219C/D
MAX7219ENG
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
24 Narrow Plastic DIP
24 Wide SO
Dice*
24 Narrow Plastic DIP
Bar-Graph Displays
Industrial Controllers
Panel Meters
LED Matrix Displays
MAX7219EWG -40°C to +85°C 24 Wide SO
MAX7219ERG -40°C to +85°C 24 Narrow CERDIP
Ordering Information continued at end of data sheet.
*Dice are specified at T A = +25°C.
TOP VIEW
Pin Diagrams
Functional Configuration
Typical Application Circuit
DIN 1
DIG 0 2
24 DOUT
23 SEG D
DIG 4 3
GND 4
22 SEG DP
21 SEG E
+5V
19
DIG 6 5
DIG 2 6
MAX7219
MAX7221
20 SEG C
19 V+
9.53k Ω
18
ISET
V+
DIG 0–DIG 7
8 DIGITS
MAX7221
DIG 3 7
DIG 7 8
GND 9
18 ISET
17 SEG G
16 SEG B
μ P
MOSI
I/O
1
12
MAX7219
DIN
LOAD (CS)
DIG 5 10
DIG 1 11
15 SEG F
14 SEG A
SCK
13
9
CLK
GND
GND
SEG A–G,
SEG DP
8 SEGMENTS
LOAD (CS) 12
13 CLK
4
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
( ) MAX7221 ONLY DIP/SO
( ) MAX7221 ONLY
8-DIGIT μ P DISPLAY
UCSP is a trademark of Maxim Integrated Products, Inc.
SPI and QSPI are trademarks of Motorola Inc. MICROWIRE is a trademark of National Semiconductor Corp.
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.
19-4452; Rev 4; 7/03
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7221ENG | 功能描述:LED显示驱动器 8-Digit 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 |
| MAX7221ENG+ | 功能描述:LED显示驱动器 8-Digit 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 |
| MAX7221ERG | 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 |
| MAX7221EWG | 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 |
| MAX7221EWG+ | 功能描述:LED显示驱动器 8-Digit 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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