ATMEGA16L-8MU - 8-bit AVR MCU 16KB Flash 8MHz QFN-44 | Microchip
N.º da peça: ATMEGA16L-8MU ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.13 | $6,13 |
| 10 | $6.5 | $65,00 |
| 100 | $7.2 | $720,00 |
| 500 | $8.1 | $4.050,00 |
| 1.000 | $9.8 | $9.800,00 |
ATMEGA16L-8MU Visão geral
An AVR microcontroller is a family of 8-bit reduced-instruction-set (RISC) MCUs that execute most instructions in a single clock cycle. Within the power-management and embedded-control hierarchy, an MCU like this combines a processor core, program Flash, SRAM, EEPROM, and peripherals such as UART, SPI, TWI (I2C), timers, and a 10-bit ADC into a single chip, replacing multi-chip glue logic in embedded designs.
Key differentiating features include the advanced RISC architecture with 133 powerful instructions, 32 general-purpose working registers, and full static operation. The 16KB self-programmable Flash supports In-System Programming (ISP), enabling field firmware updates without removing the device from the board. The 512B EEPROM retains calibration data and settings through power cycles.
The ATmega16L core pairs a Harvard-architecture AVR core with rich peripherals: two 8-bit and one 16-bit timer with PWM, an 8-channel 10-bit ADC, byte-oriented TWI, SPI serial port, and a programmable serial USART. The exposed-pad QFN package improves ground and thermal performance over the TQFP alternative while shrinking board area to a 7x7 mm footprint for space-constrained products.
Typical applications include industrial automation and sensor nodes, battery-powered portable instrumentation (where the low-voltage 2.7V operation extends battery life), home appliances, lighting and motor control, and embedded education or prototyping platforms built on the well-documented ATmega ecosystem.
Design consideration: the L suffix caps speed at 8MHz; if your firmware requires 16MHz operation, select the standard-grade ATmega16A/ATmega16 part instead, since the L-grade speed limit cannot be exceeded regardless of supply voltage.
This page synthesizes distributor pricing from DigiKey, Mouser, LCSC, and Octopart, drop-in package-compatible alternatives, and practical selection guidance not consolidated in the manufacturer datasheet.
Alternativas drop-in para ATMEGA16L-8MU — 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 ATMEGA16L-8MU (mesmo formato e footprint) — diferindo em EEPROM Size, Instructions, Package, Program Memory Type, SRAM Size.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasATMEGA16L-8MU Classificações máximas e características elétricas
| Core | AVR 8-bit RISC |
| Program Memory Size | 16KB (8K x 16) Flash |
| Program Memory Type | FLASH (In-System Programmable) |
| EEPROM Size | 512 B (0.5KB) |
| Frequência máxima de clock | 8 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Largura do barramento de dados | 8 bit |
| I/O Pins | 32 |
| Package Type | 44-VQFN (7x7 mm) with Exposed Pad |
| Estilo de montagem | Surface Mount |
| Instructions | 133 (most single-cycle) |
| Life Cycle Stage | Active |
| Product Type | 8-bit Microcontrollers - MCU |
Guia de Configuração de Pinos do ATMEGA16L-8MU 44-vqfn (7x7 mm) with exposed pad
Configuração de pinos para ATMEGA16L-8MU (pacote 44-vqfn (7x7 mm) with exposed pad). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para ATMEGA16L-8MU.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ATMEGA16L-8MU é adequado para 6 aplicaçãos: Industrial Automation and Control, Battery-Powered Portable Instrumentation, Home Appliances and Consumer Electronics, Motor Control and RC/Hobby Electronics, Embedded Education and Prototyping, IoT Sensor Nodes and Data Loggers.
Industrial Automation and Control
The ATMEGA16L-8MU fits industrial control nodes because its 32 I/O pins, three timers with PWM outputs, and 8-channel 10-bit ADC allow direct sensor and actuator interfacing without external glue logic. Its 2.7V to 5.5V supply range tolerates noisy industrial 5V rails, while the 16KB ISP Flash supports field firmware updates during machine maintenance. In a typical node the MCU reads analog transducers through the ADC, drives relays or PWM actuators, and communicates upstream via the USART or SPI at up to 8MHz system clock. The 44-VQFN 7x7 mm exposed-pad package keeps the controller compact on dense I/O boards, and the exposed pad provides a low-impedance ground reference that improves noise immunity in electrically harsh factory environments.
Recomendado
Battery-Powered Portable Instrumentation
With a 2.7V to 5.5V operating range, the ATMEGA16L-8MU runs directly from a single lithium cell or two alkaline cells without a regulator, extending battery life versus 5V-only MCUs. The L-grade 8MHz clock matches the low-voltage operating envelope, and the AVR core's single-cycle instruction execution delivers efficient MIPS-per-milliamp in duty-cycled measurement loops. The 8-channel 10-bit ADC digitizes sensor bridges and battery-voltage monitors, while the 512B EEPROM stores calibration constants that survive battery replacement. The 512B EEPROM stores calibration constants across power cycles. Designers typically clock the device from an external 32.768kHz crystal or the internal RC oscillator in sleep-heavy applications, waking via timer or external interrupt to measure, log over USART/SPI, and return to power-down mode.
Recomendado
Home Appliances and Consumer Electronics
The ATMEGA16L-8MU serves appliance control boards where a low-cost 8-bit MCU must handle user interfaces, motor PWM, and safety monitoring simultaneously. Its 32 I/O pins drive seven-segment displays, relays, and buttons directly; the 16-bit timer generates PWM for fan or pump speed control; and the 10-bit ADC reads NTC thermistors for over-temperature protection. The 2.7V to 5.5V supply tolerance accommodates cost-optimized linear supplies found in white goods. The 44-pin VQFN 7x7 mm exposed-pad package reduces PCB area in compact control enclosures and improves heat spreading from the die during continuous relay-driving duty. The 16KB self-programmable Flash allows OEMs to ship firmware updates via a bootloader through the appliance's service UART, reducing recall cost across installed fleets.
Recomendado
Motor Control and RC/Hobby Electronics
The ATMEGA16L-8MU is a proven choice for DC and stepper motor controllers and RC platforms because its three timers produce multiple independent PWM channels while the 8MHz core executes control loops deterministically with single-cycle instructions. The ATmega16 family's peripheral set - including input-capture (PD6/ICP1) for encoder or RC-pulse measurement and external interrupts on PD2/PD3 - enables precise speed and position feedback. Its 10-bit ADC reads current-sense shunts for overcurrent limiting, and the 512B EEPROM retains motor tuning parameters. Many open-source brushless and servo controllers have used this exact die in the 44-VQFN package, so reference firmware is abundant. The exposed-pad ground connection helps contain PWM switching noise on compact driver boards.
Recomendado
Embedded Education and Prototyping
The ATmega16 family is a staple of embedded-systems coursework because the AVR architecture is simple, fully documented, and programmable via low-cost ISP tools. The ATMEGA16L-8MU's 133-instruction set, 32 general-purpose registers, and clearly mapped peripherals (USART, SPI, TWI, ADC, timers) teach real peripheral bring-up without vendor lock-in. The 16KB Flash is large enough for C-based projects while small enough to teach memory budgeting, and the 512B EEPROM demonstrates nonvolatile storage techniques. The 5V-tolerant, 2.7V-5.5V supply range lets university and maker boards use simple USB or bench supplies. Development requires only an SPI ISP programmer; no debugger hardware is mandatory thanks to serial or LED-based workflows, keeping lab kits inexpensive.
Recomendado
IoT Sensor Nodes and Data Loggers
In distributed IoT nodes, the ATMEGA16L-8MU acts as the sensor-frontend MCU, digitizing up to 8 analog channels with its 10-bit ADC and forwarding packets over SPI or TWI to a radio or Ethernet module. The AVR's power-down sleep modes and low 2.7V operation suit battery- or energy-harvesting-powered loggers that wake on timer or external interrupt, sample, transmit, and sleep again. The 16KB Flash hosts protocol stacks and a bootloader, while 512B EEPROM buffers configuration and calibration data. The 44-VQFN 7x7 mm package fits coin-cell-sized sensor pucks, and the exposed pad anchors a solid ground plane that reduces ADC noise for accurate low-level sensor readings. Its long availability and multi-source distributor stock simplify fleet maintenance.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATMEGA16L-8MU — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATMEGA16A-MU | ATMEGA16L-8MC | ATMEGA32A-MU |
|---|---|---|---|---|
| Package | 44-VQFN (7x7 mm) Exposed Pad | 44-VQFN (7x7 mm) Exposed Pad - same | 44-VQFN EP - same | 44-VQFN (7x7 mm) - same footprint |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology (Atmel) | Microchip Technology |
| Program Flash | 16KB (8K x 16) | 16KB | 16KB | 32KB |
| EEPROM | 512 B | 512 B | 512 B | 1 KB |
| Max Clock Frequency | 8 MHz (L-grade) | 16 MHz | 8 MHz | 16 MHz |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| I/O Pins | 32 | 32 | 32 | 32 |
| Lifecycle Status | Active | Active (recommended newer device) | Active / Not Recommended for new designs | Active |
Principais diferenciais
- Low-voltage L-grade operation to 2.7V (vs ATMEGA16A-MU)
- Exposed-pad VQFN package saves space and improves grounding (vs ATMEGA16L-8MI)
- Same footprint with a performance upgrade path (vs ATMEGA32A-MU)
Notas de projeto
Decouple VCC and AVCC with 0.1uF ceramic capacitors placed within a few millimeters of each pin, plus a 4.7uF to 10uF bulk capacitor near the device. Connect AVCC to VCC through a low-pass LC filter when using the ADC in noisy environments, and never leave AVCC unconnected even if the ADC is unused. The exposed pad on the 44-VQFN should be soldered to a solid ground plane; per the datasheet it is the primary ground connection in the MLF package, not merely a thermal feature.
The 44-VQFN (7x7 mm) requires a land pattern matching the datasheet MLF drawing with an exposed-pad aperture of roughly 3.5-4 mm for reliable solder wicking. Use via stitching (4-9 vias) under the exposed pad to the ground plane for lowest inductance. If migrating between MU (QFN) and MI (TQFP) versions, note the footprints differ - a QFN land pattern cannot accept a TQFP and vice versa. Inspect QFN joints with X-ray or angled microscopy since perimeter pads are partially hidden.
Do not clock the L-grade part above 8MHz - the '-8' suffix is a hard speed-grade limit, unlike the standard ATmega16A which runs to 16MHz. Configure fuse bits carefully: setting SPIEN incorrectly or disabling RESET as an I/O pin can lock out further ISP programming; a JTAG programmer or high-voltage parallel programmer is then required for recovery. Also disable the JTAG interface via the JTD bit or fuse if PC2-PC5 are needed as general I/O, since JTAG is enabled by default.
Informações de conformidade
Compliance status not explicitly stated in the provided web data; verify on the Microchip product page or certificate of conformance before procurement.