ICM7228DMJI

Display Drivers Overview

The ICM7228DMJI is an obsolete LED display driver manufactured by Renesas Electronics (formerly Harris/Intersil). It supports 8 digits and 64 segments with a parallel interface. Operating voltage ranges from 4V to 6V, with a maximum supply current of 450 µA. The device operates within a temperature range of -40°C to +85°C and is housed in a 28-pin CerDIP package.

Display Drivers Feature Summary

• Integrated 8x8 bit RAM for direct digit storage
• Built-in decoder logic for 7-segment displays
• Internal oscillator eliminates external crystal requirements

Display Drivers Applications

• Fiber moisture content control system interfaces
• Industrial instrumentation displays
• Embedded system numeric readouts

Display Drivers Procurement Notes

This component is officially discontinued and marked as obsolete. Verify availability through authorized distributors or surplus suppliers. Confirm RoHS compliance status and check for product change notifications regarding packaging or pinout modifications before procurement.

Display Drivers Selection Notes

Select this part only if legacy compatibility with existing 8-digit 7-segment LED matrices is required. Ensure the host microcontroller provides compatible parallel data signals. Note that C/D variants require specific mode pin handling for shutdown functions.

Display Drivers Part Context

Part of the ICM7218/ICM7228 series of CMOS LED drivers. These chips were widely used in industrial applications requiring multiplexed display control without complex external logic.

Display Drivers Replacement Considerations

• ICM7228BIJI
• ICM7228CIPIZ

Display Drivers FAQ

Does the ICM7228DMJI require an external clock source?

No, the device includes an internal oscillator circuit, eliminating the need for an external crystal.

What is the supported display configuration?

It drives up to 8 digits of 7-segment LEDs with decimal points, supporting a total of 64 segments.