ATTINY87-MU

Overview

The ATtiny87-MU is an 8-bit AVR microcontroller featuring a LIN controller for automotive applications. It includes 8K bytes of In-System Programmable Flash, 512 bytes of EEPROM, and 512 bytes of SRAM. The device supports a LIN 2.1/1.3 controller or an 8-bit UART. Key peripherals include a 10-bit ADC with up to 19 channels, two timer/counters, and multiple serial interfaces such as SPI and USI. It operates with a fully static architecture and offers dynamic clock switching for power management.

Feature Summary

• Integrated LIN 2.1 and 1.3 controller or 8-bit UART for communication
• High-performance low-power AVR 8-bit RISC architecture
• On-chip debug system (DebugWIRE) and hardware ISP via SPI
• 10-bit ADC with differential channels and programmable gain

Applications

• Automotive LIN networking nodes
• Industrial control systems requiring robust communication
• Battery-powered devices utilizing dynamic clock switching
• Sensor interfaces using the integrated analog comparator and ADC

Procurement Notes

Verify the specific suffix against the manufacturer's current datasheet to confirm package type and temperature range. Ensure the ordering code matches the required flash capacity variant. Confirm RoHS compliance status and lead times directly with authorized distributors. Check for any recent obsolescence notices or lifecycle changes from Microchip Technology before finalizing procurement plans.

Selection Notes

Select this component when automotive LIN bus connectivity is required alongside standard AVR peripheral features. It is suitable for designs needing a balance of processing power and low power consumption. Consider the available I/O count and memory size relative to application complexity. Verify that the operating voltage and temperature ranges meet the specific environmental constraints of the target deployment.

Part Context

This device belongs to the ATtiny family of 8-bit AVR microcontrollers produced by Atmel, now part of Microchip Technology. The series is known for high performance and low power consumption in small packages. The ATtiny87 specifically targets applications requiring enhanced communication capabilities like LIN, distinguishing it from basic ATtiny models without dedicated controllers.

Replacement Considerations

Check Microchip's official cross-reference guides for direct pin-compatible substitutes within the ATtiny series. Verify that alternative parts support the same LIN controller functionality if automotive communication is critical. Ensure memory sizes and peripheral sets match the original design requirements to avoid firmware rework.