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Intersil Electronic Components Datasheet



ICM7211AM

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.



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ICM7211AM
Pinout
ICM7211AM (PDIP)
TOP VIEW
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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 - Intersil Corporation
Total Page 7 Pages
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