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Intersil Electronic Components Datasheet

ICM7211AM Datasheet

4-Digit LCD Display Driver

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®
Data Sheet
November 16, 2004
ICM7211AM
FN3158.5
4-Digit, LCD Display Driver
The ICM7211AM device is a non-multiplexed four-digit
seven-segment CMOS LCD display decoder-driver.
This device is configured to drive conventional LCD displays
by providing a complete RC oscillator, divider chain,
backplane driver, and 28 segment outputs.
It also has a microprocessor compatible input configuration,
which provides data input latches and Digit Address latches
under control of high-speed Chip Select inputs. These devices
simplify the task of implementing a cost-effective
alphanumeric seven-segment display for microprocessor
systems, without requiring extensive ROM or CPU time for
decoding and display updating.
The ICM7211AM provides the “Code B” output code, i.e.,
0-9, dash, E, H, L, P, blank, but will correctly decode true
BCD to seven-segment decimal outputs.
Features
• Four Digit Non-Multiplexed 7 Segment LCD Display
Outputs with Backplane Driver
• Complete Onboard RC Oscillator to Generate Backplane
Frequency
• Backplane Input/Output Allows Simple Synchronization of
Slave-Devices to a Master
• Provides Data and Digit Address Latches Controlled by
Chip Select Inputs to Provide a Direct High Speed
Processor Interface
• Decodes Binary to Code B (0-9, Dash, E, H, L, P, Blank)
Ordering Information
PART NUMBER
ICM7211AMlPL
DISPLAY
TYPE
DISPLAY
DECODING
LCD Code B
INPUT
DISPLAY DRIVE
INTERFACING
TYPE
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Microprocessor
Direct Drive
TEMP.
RANGE (°C)
PACKAGE
-40 to 85 40 Ld PDIP
PKG. DWG. #
E40.6
DataShee
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1
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. 2001, 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.


Intersil Electronic Components Datasheet

ICM7211AM Datasheet

4-Digit LCD Display Driver

No Preview Available !

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ICM7211AM
Pinout
ICM7211AM (PDIP)
TOP VIEW
et4U.com
VDD 1
e1 2
g1 3
f1 4
BP 5
a2 6
b2 7
c2 8
d2 9
e2 10
g2 11
f2 12
a3 13
b3 14
c3 15
d3 16
e3 17
g3 18
f3 19
a4 20
40 d1
39 c1
38 b1
37 a1
36 OSC
35 VSS
34 CHIP SELECT 2
33 CHIP SELECT 1
32 DIGIT ADRESS BIT 2
31 DIGIT ADRESS BIT 1
30 B3
29 B2
28 B1
DATA
INPUTS
27 B0
26 f4
25 g4
24 e4
23 d4
22 c4
21 b4
Functional Block Diagram
D4
SEGMENT OUTPUTS
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ICM7211AM
D3
SEGMENT OUTPUTS
D2
SEGMENT OUTPUTS
D1
SEGMENT OUTPUTS
7 WIDE DRIVER
7 WIDE DRIVER
7 WIDE DRIVER
7 WIDE DRIVER
DataShee
7 WIDE LATCH EN
7 WIDE LATCH EN
7 WIDE LATCH EN
7 WIDE LATCH EN
PROGRAMMABLE
4 TO 7 DECODER
PROGRAMMABLE
4 TO 7 DECODER
PROGRAMMABLE
4 TO 7 DECODER
DATA
INPUTS
2-BIT
DIGIT
ADRESS
INPUT
CHIP
SELECT 1
CHIP
SELECT 2
4-BIT
LATCH
ENABLE
2-BIT
LATCH
ENABLE
2 TO 4
DECODER
ONE
SHOT
OSCILLATOR
INPUT
ENABLE
DIRECTOR
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2
OSCILLATOR
19kHz
FREE-RUNNING
÷128
BLACKPLANE
DRIVER
ENABLE
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PROGRAMMABLE
4 TO 7 DECODER
BP INPUT/OUTPUT
FN3158.5
November 16, 2004


Part Number ICM7211AM
Description 4-Digit LCD Display Driver
Maker Intersil Corporation
Total Page 7 Pages
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