ATTINY87-SU - 16MHz 8KB AVR MCU with LIN | Microchip
MPN: ATTINY87-SU ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.7528 | $0.75 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ATTINY87-SU Overview
An 8-bit AVR microcontroller is a compact embedded-processing semiconductor that combines a CPU core, Flash program memory, SRAM, EEPROM, general-purpose I/O, and on-chip peripherals in one device. Within the product hierarchy, ATTINY87-SU belongs to the AVR family, ATtiny microcontrollers, microcontrollers, and integrated circuits. Its in-system programmability supports programming and reprogramming through the device programming interface, while the 16 MHz operating frequency provides a practical balance between processing throughput, power consumption, and peripheral timing.
The key verified features are 8 KB Flash memory, 512 bytes of EEPROM, 512 bytes of SRAM, 16 general-purpose I/O lines, 16 MHz operation, and integrated connectivity identified by the verified comparison listing as I2C, LIN bus, SPI, and UART. The device is also identified as using 32 general-purpose working registers and an 8-bit timer/counter with compare modes. These resources are appropriate for embedded products that need deterministic control, serial communication, modest data storage, and a modest number of external connections.
The ATTINY87-SU is especially relevant to LIN-connected automotive and transportation control modules, sensor nodes, actuator controllers, small industrial interfaces, and low-cost embedded automation products. Its 20-pin SOIC package supports conventional surface-mount assembly, while the 16 I/O lines allow the device to manage multiple discrete inputs and outputs. Compared with larger MCUs, the ATTINY87-SU emphasizes compactness and low power rather than high processing throughput or large memory capacity.
Designers should verify the exact pin assignments, clock configuration, programming interface, and peripheral multiplexing against the Microchip ATtiny87 documentation before PCB release. Pay particular attention to the 20-pin SOIC footprint, power and ground connections, exposed communication pins, and the supply-voltage limits specified by the manufacturer datasheet. The verified source does not provide complete electrical limits, temperature ratings, or a complete pin table, so those details require datasheet confirmation.
This page combines verified distributor specifications, manufacturer-family information, package details, sourcing references, and practical selection guidance for engineers evaluating the ATTINY87-SU. It is intended to help identify the correct AVR MCU, compare it with related devices, and plan a board-level design without assuming unverified electrical or package details.
Drop-in alternatives for ATTINY87-SU — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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| Core Architecture | 8-bit AVR RISC-based |
| Maximum Clock Frequency | 16 MHz |
| Flash Memory | 8 KB in-system programmable Flash |
| EEPROM Memory | 512 bytes |
| SRAM | 512 bytes |
| General-Purpose I/O Lines | 16 lines |
| General-Purpose Working Registers | 32 registers |
| Timer/Counter | 8-bit timer/counter with compare modes |
| Serial Interfaces | I2C, LIN bus, SPI, UART |
| Package | 20-pin SOIC |
| Mounting Type | Surface Mount |
| Device Type | 8-bit microcontroller IC |
| Programming | In-system programmable Flash |
| Manufacturer | Microchip Technology |
| Lifecycle Status | Active |
ATTINY87-SU 20-pin soic Pin Configuration Guide
Pin configuration for ATTINY87-SU (20-pin soic package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATTINY87-SU.
Refer to the datasheet for full pin configuration.
Typical Applications
ATTINY87-SU is suitable for 6 applications: LIN-Connected Automotive Control Node, Small Sensor and Actuator Interface, Industrial Automation Module, Embedded Consumer Accessory, Low-Power Peripheral Controller, Programmable Logic and Timing Controller.
LIN-Connected Automotive Control Node
The ATTINY87-SU is a compact 8-bit AVR MCU for low-cost vehicle electronics and transportation control modules. Its verified 16 MHz clock, 16 general-purpose I/O lines, and LIN-bus connectivity make it suitable for a distributed node that reads switches or sensors and drives lamps, relays, or actuator-control logic. The 8 KB Flash and 512-byte SRAM are sufficient for small embedded applications, while 512 bytes of EEPROM provides nonvolatile local storage. The design must use the exact LIN transceiver, connector, protection network, and device pin assignments from the Microchip datasheet. Verify automotive qualification and temperature requirements for the exact ordering code before production use.
Recommended
Small Sensor and Actuator Interface
Use the ATTINY87-SU to centralize discrete sensing and control in a compact embedded module. Its 16 general-purpose I/O lines can support digital inputs, indicator outputs, and external control signals, while the 16 MHz AVR core handles firmware tasks and timing. The device is especially useful when the design needs more memory than a very small microcontroller but does not require a high-performance processor. Firmware can map the verified I2C, SPI, UART, or LIN connectivity to external sensors and actuators as appropriate. Verify voltage levels, peripheral multiplexing, and pin-level electrical limits in the manufacturer documentation before selecting the supporting sensors and drivers.
Recommended
Industrial Automation Module
The ATTINY87-SU can serve as the local controller in a small factory or building-automation module. Its 8-bit AVR architecture, 16 I/O lines, and verified serial interfaces support status inputs, relay or lamp control, local diagnostics, and communication to a higher-level controller. The 512-byte SRAM and 8 KB Flash are best suited to compact control logic rather than large data logging or complex graphics. For industrial deployment, add appropriate input protection, isolation, surge handling, and connector design around the MCU. Confirm the exact supply range, I/O drive limits, timing margins, and environmental ratings because those specifications are not included in the supplied verified data.
Recommended
Embedded Consumer Accessory
The ATTINY87-SU is appropriate for a compact consumer accessory that needs local logic, serial communication, and modest nonvolatile data storage. The 16 MHz operating speed and 8 KB Flash support small control loops, button handling, status indication, and communication tasks, while 512 bytes of EEPROM can retain calibration or configuration values. It is a better fit for a dedicated peripheral controller than for a graphics-intensive or internet-connected product. Select external drivers only after checking the device's verified supply and I/O requirements. The final design should also provide programming access, reset behavior, decoupling, and a validated mechanical footprint for the 20-pin SOIC package.
Recommended
Low-Power Peripheral Controller
The ATTINY87-SU can serve as a low-power controller in a peripheral device that periodically reads inputs, updates outputs, and communicates with a host. The manufacturer describes the ATtiny87 family as high-performance and low-power, and the device's 8 KB Flash, 512-byte SRAM, and 512-byte EEPROM provide enough resources for compact firmware without an external memory device. Power-mode, sleep-current, wake-up, and operating-current details are not supplied in the verified data, so battery-life calculations require the current Microchip datasheet. Validate regulator drop time, wake-up timing, watchdog behavior, and brownout performance as part of the final embedded design.
Recommended
Programmable Logic and Timing Controller
The ATTINY87-SU can implement compact programmable timing, sequencing, or interlock logic where an 8-bit MCU is sufficient. Its verified 8-bit timer/counter with compare modes, 16 MHz clock, and 16 I/O lines provide the basis for event timing, pulse generation, step sequencing, and discrete control outputs. The device is not a substitute for a high-speed digital signal processor, but it can coordinate multiple I/O events while preserving local autonomy. Firmware should account for the limited 8 KB Flash and 512-byte SRAM, and board design should provide clean reset and programming access. Exact timer modes, clock prescaling, and timing tolerances must be taken from the manufacturer documentation.
Recommended
Recommended Products Summary
Engineering reference data for ATTINY87-SU — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | Microchip Technology |
| Package | 20-pin SOIC |
| Core | 8-bit AVR |
| Maximum Clock Frequency | 16 MHz |
| Flash Memory | 8 KB |
| EEPROM | 512 bytes |
| SRAM | 512 bytes |
| General-Purpose I/O | 16 lines |
| Serial Connectivity | I2C, LIN bus, SPI, UART |
| Timer/Counter | 8-bit timer/counter with compare modes |
| Lifecycle Status | Active |
| Starting Verified Price | $0.7528 |
Key Differentiators
- Compact communication-focused AVR MCU (vs ATTINY861A-SU)
- Verified memory and I/O balance (vs ATTINY1627-MFR)
- 20-pin SOIC integration (vs ATTINY824-SSU)
Design Notes
Use the Microchip ATtiny87 package drawing for the 20-pin SOIC footprint rather than relying only on the generic SOIC designation. Preserve access to the programming interface and confirm the placement of power, ground, reset, and communication pins before routing. Keep decoupling close to the device pins and provide a clean ground return, because embedded MCU designs can become timing-sensitive when high-current outputs or external interfaces are added.
Do not treat a related ATtiny MPN as a drop-in replacement merely because it also uses an 8-bit AVR core and SOIC package. The supplied comparison results show differences in clock speed and do not prove identical pinout, supply voltage, peripheral multiplexing, or memory behavior. Before substitution, compare every numbered pin, programming signal, communication function, voltage limit, and timing requirement in the current manufacturer documentation.
The verified data confirms 8 KB Flash, 512 bytes of SRAM, 512 bytes of EEPROM, 16 MHz operation, and a 16 MHz clock, but it does not provide current consumption or operating-voltage limits. Therefore, regulator sizing and battery-life calculations require the manufacturer datasheet. Estimated power calculations must use the actual input voltage, output current, switching activity, and measured or specified operating modes rather than assumptions from this page.
Compliance Information
The supplied verified data does not provide exact RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for ATTINY87-SU. AEC-Q100 is not applicable because this is a general-purpose MCU unless the exact ordering code is separately qualified.