ATTINY816-MN - 20MHz 8KB AVR MCU | Microchip Technology
N.º da peça: ATTINY816-MN ✓ AtivoATTINY816-MN Visão geral
An 8-bit microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals into one device. The tinyAVR 1-series combines a compact AVR architecture with event-system support, SleepWalking, and analog peripherals suited to industrial automation, consumer electronics, and connected embedded products. Its 20-pin package also permits a relatively small PCB footprint without limiting access to digital and analog functions.
The ATTINY816-MN operates at up to 20 MHz and provides 8 KB of Flash for firmware, 512 bytes of SRAM for working variables, and 128 bytes of EEPROM for nonvolatile data. According to the manufacturer product information, minimum supply operation is 2.7 V at 10 MHz or 1.8 V at 5 MHz. Core Independent Peripheral functionality supports event-driven control, while SleepWalking allows selected peripherals to operate during low-power sleep modes.
The tinyAVR architecture uses a hardware multiplier for efficient multiplication operations and provides accurate analog features that can reduce the need for external components. Vertical migration within the 20-pin tinyAVR family is possible when the target device provides the same or more peripheral resources. Firmware compatibility still requires checking interrupt vectors, peripheral instances, pin multiplexing, and package-specific connections.
Typical uses include sensor conditioning, compact industrial controllers, IoT endpoint nodes, building and appliance controls, and small motor or actuator-control systems. The combination of 20 MHz processing, 8 KB Flash, and low-power operating modes is especially useful where the design must respond to external events without continuously running a high-power processor.
Choose the operating voltage and clock configuration carefully because the stated 1.8 V minimum applies at 5 MHz, while 2.7 V applies at 10 MHz. Confirm the maximum supported frequency at the selected supply voltage, preserve the exposed-pad grounding requirements, and review the manufacturer datasheet pin table before assigning analog or communication functions.
This page combines the manufacturer specifications with package details, verified ordering information, drop-in alternatives, and practical guidance for migration, firmware compatibility, low-power design, and PCB implementation. It is intended to support engineering selection rather than replace the complete manufacturer datasheet.
Alternativas drop-in para ATTINY816-MN — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATTINY816-MN (mesmo formato e footprint) — diferindo em Package, CPU Architecture, Pin Count, Product Type, Functional Safety.
ATTINY816-MNR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATTINY816-MF
✅ Drop-InConsulte o preço
Ver ficha técnica →ATTINY817-MN
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →ATTINY817-MNR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
ATTINY817-MF
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →ATTINY816-MN Classificações máximas e características elétricas
| Product Type | 8-bit AVR tinyAVR 1-series microcontroller |
| Maximum CPU Frequency | 20 MHz |
| Flash Memory | 8 KB |
| SRAM | 512 bytes |
| EEPROM | 128 bytes |
| CPU Architecture | 8-bit AVR with hardware multiplier |
| Encapsulamento | 20-pin VQFN (3 x 3 mm) |
| Contagem de pinos | 20 pins |
| Minimum Supply Voltage at 5 MHz | 1.8 V |
| Minimum Supply Voltage at 10 MHz | 2.7 V |
| Industrial Temperature Grade | Up to 105 °C |
| Tipo de montagem | Surface mount |
| Series | tinyAVR 1-series |
| Event System | Supported |
| SleepWalking | Supported |
| Status RoHS | Green; detailed compliance status requires manufacturer confirmation |
Configuração de pinos do ATTINY816-MN
| Pino 1 | PA0 — Port A input/output 0 |
| Pino 2 | PA1 — Port A input/output 1 |
| Pino 3 | PA2 — Port A input/output 2 |
| Pino 4 | PA3 — Port A input/output 3 |
| Pino 5 | PA4 — Port A input/output 4 |
| Pino 6 | PA5 — Port A input/output 5 |
| Pino 7 | PA6 — Port A input/output 6 |
| Pino 8 | PA7 — Port A input/output 7 |
| Pino 9 | PB3 — Port B input/output 3 |
| Pino 10 | PB2 — Port B input/output 2 |
| Pino 11 | PB1 — Port B input/output 1 |
| Pino 12 | PB0 — Port B input/output 0 |
| Pino 13 | PC5 — Port C input/output 5 |
| Pino 14 | PC4 — Port C input/output 4 |
| Pino 15 | PC3 — Port C input/output 3 |
| Pino 16 | PC2 — Port C input/output 2 |
| Pino 17 | PC1 — Port C input/output 1 |
| Pino 18 | PC0 — Port C input/output 0 |
| Pino 19 | GND — Ground connection |
| Pino 20 | VCC — Supply voltage input |
Aplicações típicas
ATTINY816-MN é adequado para 6 aplicaçãos: Industrial Sensor and Control Node, Battery-Powered IoT Endpoint, Consumer Appliance Control, Precision Analog Signal Conditioning, Compact Motor and Actuator Control, Building and Environmental Control.
Industrial Sensor and Control Node
The ATTINY816-MN fits compact industrial sensor nodes that must evaluate digital inputs, condition analog measurements, and update actuators while operating inside a 20-pin footprint. Its 20 MHz AVR core provides useful processing headroom, and 8 KB of Flash accommodates control logic, calibration constants, and communication handlers. The 512-byte SRAM supports temporary measurement and protocol data, while 128 bytes of EEPROM can retain configuration values. Event System operation and SleepWalking are valuable when the controller should react to external events or selected peripheral activity without keeping the CPU continuously active. Design the power tree around the 2.7 V minimum at 10 MHz or 1.8 V minimum at 5 MHz, and place decoupling close to the VCC pins.
Recomendado
Battery-Powered IoT Endpoint
The ATTINY816-MN is appropriate for battery-powered IoT endpoints that periodically inspect a sensor, perform a local decision, and update a compact communication interface. The Event System and SleepWalking features support event-driven operation, while the low 512-byte SRAM still allows modest protocol buffers and working data. Eight kilobytes of Flash can hold a small application, drivers, and a compact protocol state machine, and the 128-byte EEPROM provides limited nonvolatile configuration storage. To extend battery life, disable unused peripherals, minimize always-active analog blocks, and use the device's low-power modes between measurements. The clock-frequency relationship is important: the manufacturer identifies 1.8 V operation at 5 MHz and 2.7 V operation at 10 MHz, so the regulator and firmware timing plan should agree.
Recomendado
Consumer Appliance Control
The ATTINY816-MN can serve as the local controller in a consumer appliance where a small PCB area, deterministic response, and mixed analog/digital control are required. The AVR core runs at up to 20 MHz, allowing responsive button, knob, sensor, and actuator handling, while 8 KB of Flash is suitable for a focused state machine rather than a large user interface. Its accurate analog features can support threshold detection and signal conditioning. SleepWalking and the Event System help reduce activity when the appliance is idle, although motor, relay, or heater loads should be isolated from the MCU through appropriate drivers. Use the 20-pin VQFN exposed-pad layout for stable grounding, keep switching-node copper away from analog inputs, and validate thermal conditions around nearby power components.
Recomendado
Precision Analog Signal Conditioning
The ATTINY816-MN is well matched to compact analog signal-conditioning modules that convert sensor outputs into digital decisions or control actions. Its accurate analog peripherals can evaluate thresholds and monitor inputs, while the 20 MHz core handles filtering, compensation, diagnostics, and state management. Eight kilobytes of Flash provides room for calibration and production-test routines, and 128 bytes of EEPROM can hold a limited device identifier or configuration. Keep analog traces short, isolate them from digital and switching currents, and provide local bypass capacitance at the supply pins. Because detailed ADC, comparator, reference, and pin-drive ratings are defined in the device datasheet, verify those values against the required analog bandwidth and input range before fixing the signal path.
Recomendado
Compact Motor and Actuator Control
The ATTINY816-MN can coordinate small motors, solenoids, valves, or relays where a deterministic 8-bit control function and compact package are more important than high processing throughput. At up to 20 MHz, the core can execute motion sequences, monitor limit sensors, and apply simple closed-loop behavior. The Event System helps connect peripheral events to control actions, while 8 KB of Flash and 512 bytes of SRAM are adequate for focused embedded-control firmware. Power switches and motor drivers should remain separate from sensitive MCU routing, and flyback protection or other driver-specific components must follow the load requirements. Validate startup transients, thermal rise, and supply droop at the minimum operating voltage, since inductive or switching loads can disturb the MCU supply even when the nominal logic voltage is correct.
Recomendado
Building and Environmental Control
The ATTINY816-MN is suitable for distributed building-control nodes that monitor environmental inputs and operate local outputs through a controller, relay, or actuator. The 20-pin VQFN footprint supports compact equipment layouts, and the tinyAVR 1-series architecture combines event handling with low-power sleep modes for long duty cycles. Eight kilobytes of Flash can store the control state machine and communication routines, while 512 bytes of SRAM handles sampled and debounced sensor data. Place the MCU away from mains-side switching components, maintain clear separation between low-voltage logic and isolated high-voltage circuitry, and follow the applicable isolation and safety requirements for the finished installation. Firmware should include startup-state validation so that outputs remain in a defined state during reset, brownout, or loss of the upstream communication link.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATTINY816-MN — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATTINY816-MNR | ATTINY816-MF | ATTINY817-MN | ATTINY817-MNR | ATTINY817-MF |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-20 (3 x 3 mm) | VQFN-20 (3 x 3 mm) | VQFN-20 (3 x 3 mm) | VQFN-20 (3 x 3 mm) | VQFN-20 (3 x 3 mm) | VQFN-20 (3 x 3 mm) |
| CPU Architecture | 8-bit AVR with hardware multiplier | 8-bit AVR with hardware multiplier | 8-bit AVR with hardware multiplier | 8-bit AVR with hardware multiplier | 8-bit AVR with hardware multiplier | 8-bit AVR with hardware multiplier |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| SRAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Ordering Configuration | MN tray configuration | Tape-and-reel configuration | MF ordering configuration | MN tray configuration | Tape-and-reel configuration | MF ordering configuration |
Principais diferenciais
- Direct ATTINY816 ordering flexibility without changing the PCB (vs ATTINY816-MNR)
- Eight kilobytes of Flash supports larger embedded-control code (vs ATTINY416-MNR)
- Event-driven low-power control in a compact package (vs ATTINY817-MN)
Notas de projeto
Do not select the supply voltage independently of clock frequency. The manufacturer identifies 1.8 V as the minimum supply for operation at 5 MHz and 2.7 V for operation at 10 MHz. Confirm the complete frequency-versus-voltage curve in the datasheet before selecting a regulator. Include startup margin for the maximum operating frequency, account for regulator tolerance, and place the required input and output bypass capacitors directly beside their associated supply pins.
Route the VQFN exposed pad and ground connection according to the manufacturer land-pattern and thermal guidance. Keep analog inputs away from switching nodes and high-current return paths, and provide a continuous ground reference beneath the device where the package design permits it. Decoupling inductance should be minimized, while programming, reset, and clock traces should avoid crossing noisy power-stage copper. Verify the land pattern against the exact 20-pin VQFN drawing rather than a generic 20-pin footprint.
Treat family migration as a firmware and pin-assignment review, not only a package check. An upward move within the 20-pin tinyAVR family can preserve code when the destination has the same or more peripheral resources, but timer channels, event routing, interrupt vectors, alternate functions, and package pins still need comparison. For ATTINY816-MN to ATTINY817 candidates, explicitly review the added connectivity resources and the locations of their associated pins before approving a drop-in replacement.
Use the Event System and SleepWalking to reduce unnecessary processor activity in event-driven designs. Disable unused peripherals and avoid leaving an analog subsystem active when it is not required. Because EEPROM writes consume finite endurance and require controlled sequencing, keep nonvolatile updates infrequent and use the 128 bytes for essential configuration rather than general-purpose storage. Validate low-power timing, wake sources, and brownout behavior in the final power-supply arrangement.
Informações de conformidade
The ordering listing identifies ATTINY816-MN as a green industrial-temperature component, but no explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration is shown. Automotive qualification was not identified, so AEC-Q100 is treated as not applicable rather than assumed qualified.
