ICM7211A Datasheet, PDF (1/9 Pages) Intersil Corporation – 4-Digit, LCD Display Driver

ICM7211A
August 2001
4-Digit, LCD Display Driver
Features
Description
• 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
• ICM7211A Devices Provide Separate Digit Select Inputs
to Accept Multiplexed BCD Input (Pinout and
Functionally Compatible with Siliconix DF411)
• ICM7211AM Devices Provide 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)
• Available in Surface Mount Package
The ICM7211A (LCD) device constitutes a family of non-mul-
tiplexed four-digit seven-segment CMOS display decoder-
drivers.
The ICM7211A devices are configured to drive conventional
LCD displays by providing a complete RC oscillator, divider
chain, backplane driver, and 28 segment outputs.
This device is available with multiplexed or microprocessor
input configurations. The multiplexed versions provide four
data inputs and four Digit Select inputs. This configuration is
suitable for interfacing with multiplexed BCD or binary output
devices, such as the ICL7135. The microprocessor versions
provide data input latches and Digit Address latches under
control of high-speed Chip Select inputs. These devices sim-
plify the task of implementing a cost-effective alphanumeric
seven-segment display for microprocessor systems, without
requiring extensive ROM or CPU time for decoding and dis-
play updating.
The ICM7211A 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.
Ordering Information
DISPLAY DISPLAY
PART NUMBER TYPE DECODING
INPUT
DISPLAY DRIVE TEMP.
INTERFACING
TYPE
RANGE (^oC) PACKAGE
PKG. NO.
ICM7211AlPL
LCD Code B
Multiplexed
Direct Drive
-40× to 85× 40 Ld PDIP
E40.6
ICM7211AMlPL
LCD Code B
Microprocessor
Direct Drive
-40× to 85× 40 Ld PDIP
E40.6
ICM7211AMlM44
LCD Code B
Microprocessor
Direct Drive
-40× to 85× 44 Ld MQFP Q44.10x10
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 trademark of Intersil Americas Inc. | Copyright © Intersil Americas Inc. 2001
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File Number 3158.4