IA82527PLC44AR2

Controllers Overview

The IA82527PLC44AR2 is a CAN Serial Communications Controller manufactured by Analog Devices Inc. (Innovasic Semiconductor). It serves as a form, fit, and function replacement for the Intel 82527 device. The controller supports CAN Specification 2.0 Parts A and B, handling standard and extended message frames. It features 15 message objects: 14 transmit/receive buffers and one double-buffered receive buffer with a programmable acceptance mask. The device operates at 3.3V or 5.0V and includes flexible CPU interface options such as 8-bit/16-bit multiplexed architectures and SPI. It is housed in a 44-lead PLCC package and supports an automotive temperature range of -40°C to 125°C.

Controllers Feature Summary

• Supports CAN Specification 2.0 Part A and Part B protocols including standard and extended ID data and remote frames.
• Provides 15 message objects comprising 14 transmit/receive buffers and one double-buffered receive buffer with global masking capabilities.
• Offers multiple CPU interface configurations including 8-bit and 16-bit multiplexed Intel/non-Intel architectures and serial SPI mode.
• Includes two bidirectional 8-bit I/O ports and a programmable clock output for system synchronization.

Controllers Applications

• Replacement for obsolete Intel 82527 controllers in existing board designs.
• Automotive network nodes requiring robust CAN communication.
• Industrial control systems utilizing multi-master CSMA/CR bus architectures.

Controllers Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and voltage operation mode. Confirm compatibility with existing software compilers and emulation tools before integration. Ensure the supply source provides documentation regarding the MILES™ cloning technology used for this component. Check for any known functional differences listed in the errata section of the datasheet.

Controllers Selection Notes

Select this component when a direct replacement for the Intel 82527 is required without redesigning the host system. Choose the PLCC package variant if the original footprint must be maintained. Verify that the host system supports the desired CPU interface mode, whether parallel multiplexed or serial SPI. Ensure the operating environment falls within the specified automotive temperature range.

Controllers Part Context

This component is part of the Innovasic Semiconductor MILES™ Managed IC Lifetime Extension System. It is designed to clone the original Intel 82527 silicon design to ensure long-term availability. The manufacturing process captures undocumented features to maintain backward compatibility with legacy applications.

Controllers Replacement Considerations

This device is a direct replacement for the Intel 82527. Users should consult the errata section for any known functional differences between the Innovasic clone and the original Intel silicon. Thorough system testing is recommended to ensure full compatibility.

Controllers FAQ

What packages are available for the IA82527?

The IA82527 is available in 44-lead Plastic Leaded Chip Carrier (PLCC) and 44-lead Plastic Quad Flat Pack (PQFP) RoHS packages.

How many message objects does the IA82527 support?

The IA82527 supports 15 message objects, consisting of 14 transmit/receive buffers and one double-buffered receive-only buffer with a programmable acceptance mask.

What CPU interface modes are supported?

The device supports 16-bit multiplexed Intel architecture, 8-bit multiplexed Intel architecture, 8-bit multiplexed non-Intel architecture, 8-bit non-multiplexed non-Intel architecture, and Serial (SPI) interface mode.