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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

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ICM7211AM pdf
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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
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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



Intersil Electronic Components Datasheet

ICM7211AM Datasheet

4-Digit LCD Display Driver

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ICM7211AM pdf
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ICM7211AM
Absolute Maximum Ratings
Thermal Information
Supply Voltage (VDD - VSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
Input Voltage (Any Terminal) (Note 1) . . . VSS - 0.3V to VDD, + 0.3V
Operating Conditions
Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to 85°C
Thermal Resistance (Typical, Note 2)
θJA (°C/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150°C
Maximum Storage Temperature Range . . . . . . . . .-65×°C to 150°C
Maximum Lead Temperature (Soldering, 10s) . . . . . . . . . . . . 300°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Due to the SCR structure inherent in the CMOS process, connecting any terminal to voltages greater than VDD or less than VSS may cause
destructive device latchup. For this reason, it is recommended that no inputs from external sources not operating on the same power supply be
applied to the device before its supply is established, and that in multiple supply systems, the supply to the ICM7211AM be turned on first.
2. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
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CHARACTERISTICS VDD = 5V ±10%, TA = 25°C, VSS = 0V Unless Otherwise Specified
Operating Supply Voltage Range (VDD - VSS), VSUPPLY
Operating Current, IDD
Test circuit, Display blank
Oscillator Input Current, IOSCI
Pin 36
Segment Rise/Fall Time, tr, tf
CL = 200pF
Backplane Rise/Fall Time, tr, tf
CL = 5000pF
Oscillator Frequency, fOSC
Pin 36 Floating
Backplane Frequency, fBP
Pin 36 Floating
INPUT CHARACTERISTICS
Logical “1” Input Voltage, VIH
Logical “0” Input Voltage, VIL
Input Leakage Current, IILK
Input Capacitance, ClN
BP/Brightness Input Leakage, IBPLK
BP/Brightness Input Capacitance, CBPI
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Pins 27-34
Pins 27-34
Measured at Pin 5 with Pin 36 at VSS
All Devices
AC CHARACTERISTICS
Chip Select Active Pulse Width, tWL
Other Chip Select Either Held Active, or
Both Driven Together
Data Setup Time, tDS
Data Hold Time, tDH
Inter-Chip Select Time, tICS
3
-
-
-
-
-
-
4
-
-
-
-
-
200
100
10
2
5
10
±2
0.5
1.5
19
150
-
-
±0.01
5
±0.01
200
-
-
0
-
6
50
±10
-
-
-
-
-
1
±1
±1
-
-
-
-
-
V
µA
µA
µs
µs
kHz
Hz
DataShee
V
V
µA
pF
µA
pF
ns
ns
ns
µs
Input Definitions In this table, VDD and VSS are considered to be normal operating input logic levels. Actual input low and high levels are specified
under Operating Characteristics. For lowest power consumption, input signals should swing over the full supply.
INPUT
DIP TERMINAL
CONDITIONS
FUNCTION
B0 27 VDD = Logical One Ones (Least Significant)
VSS = Logical Zero
B1 28 VDD = Logical One Twos
VSS = Logical Zero
B2 29 VDD = Logical One Fours
VSS = Logical Zero
Data Input Bits
B3 30 VDD = Logical One Eights (Most Significant)
VSS = Logical Zero
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3 FN3158.5
November 16, 2004
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Part Number ICM7211AM
Description 4-Digit LCD Display Driver
Maker Intersil Corporation
Total Page 7 Pages
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