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Details, datasheet, quote on part number:ICM7228DIPI
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Datasheet text preview:
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ICM7228
D a ta Sheet J u l y 2003 FN3160.4
8-Digit, Microprocessor-Compatible, LED Display Decoder Driver
The Intersil ICM7228 display driver interfaces microprocessors to an 8-digit, 7-segment, numeric LED display. Included on chip are two types of 7-segment decoder, multiplex scan circuitry, LED display segment drivers, LED display digit drivers and an 8-byte static memory as display RAM. Data can be written to the ICM7228A and ICM7228B's display RAM in sequential 8-digit update or in single-digit update format. Data is written to the ICM7228C and ICM7228D display RAM in parallel random access format. The ICM7228A and ICM7228C drive common anode displays. The ICM7228B and ICM7228D drive common cathode displays. All versions can display the RAM data as either Hexadecimal or Code B format. The ICM7228A and ICM7228B incorporate a No Decode mode allowing each bit of each digit's RAM word to drive individual display segments resulting in independent control of all display segments. As a result, bargraph and other irregular display segments and formats can be driven directly by this chip. The Intersil ICM7228 is an alternative to both the Maxim ICM7218 and the Intersil ICM7218 display drivers. Notice that the ICM7228A/B has an additional single digit access mode. This could make the Intersil ICM7218A/B software incompatible with ICM7228A/B operation.
Features
· Improved 2nd Source to Maxim ICM7218 · Fast Write Access Time of 200ns · Multiple Microprocessor Compatible Versions · Hexadecimal, Code B and No Decode Modes · Individual Segment Control with "No Decode" Feature · Digit and Segment Drivers On-Chip · Non-Overlapping Digits Drive · Common Anode and Common Cathode LED Versions · Low Power CMOS Architecture · Single 5V Supply
Applications
· Instrumentation · Test Equipment · Hand Held Instruments · Bargraph Displays · Numeric and Non-Numeric Panel Displays · High and Low Temperature Environments where LCD Display Integrity is Compromised
Ordering Information
PART NUMBER ICM7228AIPI ICM7228BIPI ICM7228C IPI ICM7228D IPI ICM7228AIJI ICM7228AIBI ICM7228BIBI ICM7228C IBI DATA ENTRY PROTOCOL Sequential Sequential Random Random Sequential Sequential Sequential Random DISPLAY TYPE Common Anode Common Cathode Common Anode Common Cathode Common Anode Common Anode Common Cathode Common Anode TEMP. RANGE (oC) -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 PAC KAGE 28 Ld PDIP 28 Ld PDIP 28 Ld PDIP 28 Ld PDIP 28 Ld CERDIP 28 Ld SOIC 28 Ld SOlC 28 Ld SOlC PKG. NO. E28.6 E28.6 E28.6 E28.6 F28 .6 M28.3 M28.3 M28.3
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2003. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
ICM7228 Pinouts
IC M7228A (CERDIP, PDIP, SOIC) COMMON ANODE TOP VIEW ICM7228B (CERDIP, PDIP, SOIC) COMMON CATHODE TOP VIEW
SEG c 1 SEG e 2 SEG b 3 DP 4 ID6 (HEXA/CODE B) 5 ID5 (DECODE) 6 ID7 (DATA COMING) 7 WRITE 8 MODE 9 ID4 (SHUTDOWN) 10 ID1 11 ID0 12 ID2 13 ID3 14
28 VSS 27 SEG a 26 SEG g 25 SEG d 24 SEG f 23 DIGIT 3 22 DIGIT 6 21 DIGIT 7 20 DIGIT 4 19 VDD 18 DIGIT 8 17 DIGIT 5 16 DIGIT 2 15 DIGIT 1
DIGIT 4 1 DIGIT 6 2 DIGIT 3 3 DIGIT 1 4 ID6 (HEXA/CODE B) 5 ID5 (DECODE) 6 ID7 (DATA COMING) 7 WRITE 8 MODE 9 ID4 (SHUTDOWN) 10 ID1 11 ID0 12 ID2 13 ID3 14
28 VSS 27 DIGIT 7 26 DIGIT 5 25 DIGIT 2 24 DIGIT 8 23 SEG g 22 SEG f 21 SEG e 20 SEG c 19 VDD 18 SEG d 17 SEG b 16 SEG a 15 DP
IC M7228C (CERDIP, PDIP, SOIC) COMMON ANODE TOP VIEW
SEG c 1 SEG e 2 SEG b 3 DP 4 DA0 (DIGIT ADDRESS 0) 5 DA1 (DIGIT ADDRESS 1) 6 ID7 (INPUT DP) 7 WRITE 8 HEXA/CODE B/SHUTDOWN 9 DA2 (DIGIT ADDRESS 2) 10 ID1 11 ID0 12 ID2 13 ID3 14 28 VSS 27 SEG a 26 SEG g 25 SEG d 24 SEG f 23 DIGIT 3 22 DIGIT 6 21 DIGIT 7 20 DIGIT 4 19 VDD 18 DIGIT 8 17 DIGIT 5 16 DIGIT 2 15 DIGIT 1
ICM7228D (CERDIP, PDIP, SOIC) COMMON CATHODE TOP VIEW
DIGIT 4 1 DIGIT 6 2 DIGIT 3 3 DIGIT 1 4 DA0 (DIGIT ADDRESS 0) 5 DA1 (DIGIT ADDRESS 1) 6 ID7 (INPUT DP) 7 WRITE 8 HEXA/CODE B/SHUTDOWN 9 DA2 (DIGIT ADDRESS 2) 10 ID1 11 ID0 12 ID2 13 ID3 14 28 VSS 27 DIGIT 7 26 DIGIT 5 25 DIGIT 2 24 DIGIT 8 23 SEG g 22 SEG f 21 SEG e 20 SEG c 19 VDD 18 SEG d 17 SEG b 16 SEG a 15 DP
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ICM7228 Functional Block Diagram
ICM7228A, ICM7228B ID0 - ID7 INPUT DATA 8 DECODE HEXA/CODE B CONT ROL LOGIC 1 SHUTDOWN ID4 - ID7 CONTROL INPUTS MODE 1 4
ICM7228C, ICM7228D
8
W R I TE 1
HEXADECIMAL/ CODE B/ SHUTDOWN 1
DA0 - DA2 ID0 - ID3 ID7 DIGIT DATA INPUT WRITE ADDRESS 5 1 3
THREE LEVEL INPUT LOGIC
1
SHUTDOWN
1
1 1 7 4
8-BYTE STATIC RAM
8 8
WRITE ADDRESS COUNTER 1 1
8 8-BYTE STATIC RA M
WRITE ADDRESS COUNTER
8
8
READ ADDRESS, DIGIT MULTIPLEXER 3
4
8
READ ADDRESS MULTIPLEXER 5
HEXADECIMAL/ CODE B DECODER 7
7
1
MULTIPLEX OSCILLATOR
HEXADECIMAL/ CODE B DECODER
1
MULTI PLEX OSCILLATOR
DECODE NO-DECODE 8 7 DECIMA L POINT 8 SEGMENT DRIVERS 1 INTERDIGIT BLANKIN G 8 DIGIT DRIVERS 7 DECIMAL POINT 8 SEGMENT DRIVERS 8 DIGIT DRIVERS 8 1 INTE RDI GI T BLANKING
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