EM1344V221DL8A+

Overview

The EM1344V221DL8A+ is a 4-bit microcontroller manufactured by EM Microelectronic-Marin SA. It features a RISC architecture with 2 clocks per instruction cycle and operates within a supply voltage range of 2 to 5.5 V. The device includes 4096 x 16 bits of EEPROM memory and 128 x 4 bits of RAM. It supports up to 12 inputs across Port A, Port B, and the Serial Port (SP), and up to 8 outputs on Port B and SP. Key peripherals include an 8-bit timer/event counter, a universal 10-bit counter with PWM capability, a prescaler, and a 12-bit binary coded decimal counter. The MCU integrates a Voltage Level Detector with 8 software-selectable levels from 1.2 V to 4.0 V, a serial interface, and multiple interrupt sources.

Feature Summary

• Ultra-low power operation with distinct active, standby, and sleep modes
• Integrated LCD driver supporting 20 segments with 3 or 4 times multiplexing
• Built-in melody generator capable of producing 7 tones plus silence
• Comprehensive peripheral set including timers, counters, and watchdog functions

Applications

• Battery-powered consumer electronics requiring low standby current
• Simple LCD display interfaces in household appliances
• Audio signaling devices utilizing internal tone generation
• Cost-sensitive embedded control systems

Procurement Notes

Verify the specific suffix 'DL8A+' against the manufacturer's official datasheet to confirm package type, pin configuration, and mask programming options. Ensure the ordering code matches the exact memory size and peripheral configuration required for your design. Cross-reference the component marking with the official documentation to avoid counterfeit parts. Confirm availability of engineering samples if prototype testing is needed before mass production.

Selection Notes

Select this microcontroller when a 4-bit RISC core with integrated LCD driving and audio capabilities is required. It is suitable for applications needing low power consumption across multiple operating states. Consider the limited I/O count and memory size for complex logic. Verify that the 2 to 5.5 V operating range aligns with the system power supply. Evaluate the available interrupts and timer resources against the real-time processing requirements of the target application.

Part Context

This component belongs to the EM6521 series family of 4-bit microcontrollers from EM Microelectronic-Marin SA. These devices are designed for low-cost, low-power applications. The series typically features RISC architecture, EEPROM storage, and integrated peripherals like LCD drivers and timers. The EM1344 variant specifically targets applications requiring simple control logic with visual and auditory feedback capabilities.

Replacement Considerations

Check for direct substitutes within the EM6521 family with compatible pinouts and memory sizes. Verify electrical characteristics such as voltage range and current consumption match the original design requirements. Ensure the replacement part supports the same instruction set and peripheral configurations to minimize firmware modifications.