IA8X44PDW40IR3

Application Specific Microcontrollers Overview

The IA8X44PDW40IR3 is an 8-bit microcontroller based on the Intel 80C51 architecture, manufactured by Analog Devices Inc. It features a 12-MHz clock speed and provides 192 bytes of internal RAM with support for up to 64 Kbytes of external program and data memory. The device includes four 8-bit I/O ports, two 16-bit timer/counters, and a Serial Interface Unit (SIU) supporting SDLC/HDLC protocols at speeds up to 2.4 Mbps. It operates within a voltage range of 4.5 V to 5.5 V and is housed in a 40-lead Plastic Dual In-Line Package (PDIP).

Application Specific Microcontrollers Feature Summary

• Form, fit, and function compatible with Intel 8044 and 8344 series.
• Integrated Serial Interface Unit (SIU) with SDLC/HDLC compatibility.
• Supports up to 2.4-Mbps maximum serial data rate.
• Includes two-level priority interrupt system with five interrupt sources.

Application Specific Microcontrollers Applications

• SDLC/HDLC communications controller applications.
• Systems requiring form, fit, and function replacement for legacy Intel 8044 components.
• Embedded control units utilizing external program memory.

Application Specific Microcontrollers Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and environmental compliance. Confirm the manufacturer source, as Innovasic Semiconductor designs are published by Analog Devices Inc. Ensure the component matches the 40-lead PDIP physical dimensions specified in the datasheet.

Application Specific Microcontrollers Selection Notes

Select this variant for applications requiring a 40-lead PDIP package. Note that the IA8044 variant includes 4-Kbyte internal ROM, whereas the IA8344 relies on external program memory; verify if internal ROM is required for the specific design implementation.

Application Specific Microcontrollers Part Context

This component belongs to the IA8044/IA8344 family of Fast Single-Chip 8-Bit Microcontrollers. These devices execute all ASM51 instructions and are fully compatible with the Intel 8X44 series. The IA8X44PDW40IR3 specifically denotes the PDIP package version of this microcontroller family.

Application Specific Microcontrollers Replacement Considerations

The datasheet indicates form, fit, and function compatibility with the Intel 8044 and 8344. Users should thoroughly test the device in their system to ensure compatibility, as Innovasic reports known functional differences in the Errata section of the data sheet.