MAXIM ICM7211IQH

The ICM7211 (LCD) and ICM7212 (LED) devices constitute a family of non-multiplexed four-digit seven-segment CMOS display decoder-drivers. The ICM7211 devices are configured to drive conventional LCD displays by providing a complete RC oscillator, divider chain, backplane driver, and 28 segment outputs. The ICM7212 devices are configured to drive commonanode LED displays, providing 28 current-controlled, low leakage, open-drain N-Channel outputs. These devices provide a brightness input, which: may be used at normal logic levels as a display enable, or with a potentiometer as a continuous display brightnesscontrol. These devices are 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 ICM7217, ICM7226, and ICL7135. The microprocessor versions provide 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 standard devices will provide two different decoder configurations.Thebasicdevicewilldecode thefour bit binary inputs into a seven-segment alphanumeric hexadecimal output. The *A" versions will provide the *Code B” output code, i.e., 0-9, dash, E, H, L, P, blank. Either device will correctly decode trueBCD to seven-segment decimal outputs.

• Four Dlgit Non-Multiplexed 7 Segment LCD Display Outputs with Backplane Driver
• Complete Onboard RC Oscillator to Generate Backpiane Frequency
• Backplane Input/Output Allows Simple Synchronization of Slave-Devices to a Master
• ICM7211 Devices Provide Separate Digit Select Inputs to Accept Multiplexed BCD Input (Pinout and Functionally Compatible with Siliconix DF411)
• ICM7211M Devices Provide Data and Digit Address Latches Controlled by Chlp Select inputs to Provide a Direct High Speed Processor Interface
• ICM7211 Decodes Binary to Hexadecimal; ICM7211A Decodes Blnary to Code B (0-9, Dash, E, H, L, P, Blank)
• ICM7211A Avallable in Surtace Mount Package
• 28 Current-Limited Segment Outputs Provide 4-Diglt Non-Muitiplexed Direct LED Drive at >5mA Per Segment
• Brightness Input Allows Direct Control of LED Segment Current with a Slngle Potentiometer or Digltally as a Display Enable
• ICM7212AM Device Provides Same Input Configuration and Output Decoding Options as the ICM7211AM