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參數資料
| 型號： | ICM7218 |
| 廠商： | Intersil Corporation |
| 英文描述： | 8-Digit LED Microprocessor-Compatible Multiplexed Display Decoder Driver(8位數字LED顯示驅動器) |
| 中文描述： | 8位、復用輸出、LED解碼驅動器 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 252K |
| 代理商： | ICM7218 |
1
FN3159.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
Intersil and Design is a trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2001, 2007. All Rights Reserved
ICM7218
8-Digit LED Microprocessor-Compatible
Multiplexed Display Decoder Driver
The ICM7218 series of universal LED driver systems
provide, in a single package, all the circuitry necessary to
interface most common microprocessors or digital systems
to an LED display. Included on chip are an 8-byte static
display memory, two types of 7-segment decoders, multiplex
scan circuitry, and high current digit and segment drivers for
either common-cathode or common-anode displays.
The lCM7218A and 1CM7218B feature two control lines
(WRITE and MODE) which write either 4 bits of control
information (DATA COMING, SHUTDOWN, DECODE, and
HEXA/CODE B) or 8 bits of display input data. Display data
is automatically sequenced into the 8-byte internal memory
on successive positive going WRITE pulses. Data may be
displayed either directly or decoded in Hexadecimal or Code
B formats.
The ICM7218C and lCM7218D feature two control lines
(WRITE and HEXA/CODE B/SHUTDOWN), 4 separate
display data input lines, and 3 digit address lines. Display
data is written into the internal memory by setting up a digit
address and strobing the WRITE line low. Only Hexadecimal
and Code B formats are available for display outputs.
Features
Microprocessor Compatible
Total Circuit Integration On Chip Includes:
- Digit and Segment Drivers
- All Multiplex Scan Circuitry
- 8-Byte Static Display Memory
- 7-Segment Hexadecimal and Code B Decoders
Output Drive Suitable for LED Displays Directly
Common Anode and Common Cathode Versions
Single 5V Supply Required
Data Retention to 2V Supply
Shutdown Feature - Turns Off Display and Puts Chip Into
Low Power Dissipation Mode
Sequential and Random Access Versions
Decimal Point Drive On Each Digit
Related Literature
Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
MULTIPLEX
OSCILLATOR
INTERDIGIT
BLANKING
8-DIGIT
DRIVERS
8-SEGMENT
DRIVERS
DECIMAL
POINT
7
7
1
3
DECODE/
NO-DECODE
HEXADECIMAL/
CODE B
DECODER
7
1
8
8
8
8
8
1
READ
1
7
4
7
1
1
1
1
1
4
8
4
8
8
1
1
8
8
1
1
1
5
5
3
1
HEXADECIMAL/
CODE B
DECODER
MULTIPLEX
OSCILLATOR
8-DIGIT
DRIVERS
8-SEGMENT
DRIVERS
DECIMAL
POINT
INTERDIGIT
BLANKING
ADRESS, DIGIT
MULTIPLEXER
READ
ADRESS
MULTIPLEXER
WRITE
ADDRESS
DECODER
WRITE ADDRESS
COUNTER
CONTROL
LOGIC
8-BYTE
STATIC
RAM
8-BYTE
STATIC
RAM
THREE LEVEL
INPUT LOGIC
SHUTDOWN
DECODE
HEXA/CODE B
SHUTDOWN
ID0-ID7
INPUT
DATA
ID4-ID7
CONTROL
INPUTS
MODE
WRITE
HEXADECIMAL/
CODE B/
SHUTDOWN
WRITE
ID0-ID3
ID7
INPUT
DATA
DA0-DA2
DIGIT
ADDRESS
ICM7218C COMMON ANODE
ICM7218D COMMON CATHODE
ICM7218A COMMON ANODE
ICM7218B COMMON CATHODE
FIGURE 1. FUNCTIONAL DIAGRAMS
Data Sheet
February 15, 2007
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| ICM7218AIJI | 功能描述:LED顯示驅動器 DISPLAY 8 DIG LED DRIVER 28CDIP IND RoHS:否 制造商:Micrel 數位數量:5 片段數量: 安裝風格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| ICM7218AIJI+ | 功能描述:LED顯示驅動器 RoHS:否 制造商:Micrel 數位數量:5 片段數量: 安裝風格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
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