ATMEGA169-16AU - 8-Bit AVR MCU 16KB Flash 16MHz TQFP-64 | Microchip
N.º da peça: ATMEGA169-16AU ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.31 | $5,31 |
| 10 | $4.8 | $48,00 |
| 100 | $4.3 | $430,00 |
| 500 | $3.95 | $1.975,00 |
| 1.000 | $3.6 | $3.600,00 |
ATMEGA169-16AU Visão geral
An 8-bit microcontroller is a complete computing system on a single chip, combining a CPU core, program memory, data memory, and peripheral functions such as timers, serial interfaces, and ADCs. The AVR ATmega family sits within Microchip's broader embedded microcontroller hierarchy, offering a modified Harvard architecture with 131 powerful instructions, most of which execute in a single clock cycle.
Key differentiating features of the ATMEGA169-16AU include its fully static operation delivering 16 MIPS throughput at 16 MHz, an on-chip LCD controller that directly drives segment and common lines for dot-less panel displays, and an 8-channel 10-bit ADC. Standard peripherals include one USART, SPI, and TWI (I2C-compatible) interfaces for external communication.
Technically, the advanced RISC architecture pairs eight general-purpose working registers with a fast ALU, allowing a single-cycle multiply instruction for efficient digital signal handling. In-System Programmable (ISP) Flash permits firmware updates without removing the device from the PCB, while JTAG boundary-scan and on-chip debugging simplify production test and development.
Typical applications include battery-operated appliances with LCD panels, such as thermostats, meters, coffee machines, and remote controls, where the integrated LCD driver reduces BOM cost by eliminating a dedicated LCD controller chip.
Design consideration: at 16 MHz the device requires a 4.5V to 5.5V supply, so battery-powered designs running below 4.5V must reduce the clock frequency accordingly.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para ATMEGA169-16AU — 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 ATMEGA169-16AU (mesmo formato e footprint) — diferindo em Package, EEPROM, Flash Memory, SRAM, Instruction Set.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATMEGA169P-16AU
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATMEGA329-16AU
✅ Drop-In✓ Em estoque
$8.45 / unidade
Ver ficha técnica →ATMEGA649-16AU
✅ Drop-In✓ Em estoque
$6.27 / unidade
Ver ficha técnica →ATMEGA165V-8AU
✅ Drop-In✓ Em estoque
$3.12 / unidade
Ver ficha técnica →ATMEGA169PA-MCH
✅ Drop-In✓ Em estoque
$1.68 / unidade
Ver ficha técnica →ATMEGA325-16AU
✅ Drop-In✓ Em estoque
$2.4 / unidade
Ver ficha técnica →ATMEGA169-16AU Classificações máximas e características elétricas
| Core Processor | AVR |
| Core Size | 8-Bit |
| Max Clock Frequency | 16 MHz |
| Flash Memory | 16 KB (8K x 16) |
| Temperatura de operação | -40C to +85C |
| Encapsulamento | 64-TQFP (14x14 mm) |
| Tipo de montagem | Surface Mount |
| Número de pinos | 64 |
| Instruction Set | 131 instructions, most single-cycle |
| Throughput | Up to 16 MIPS at 16 MHz |
| In-System Programming | Yes (ISP Flash) |
| LCD Controller | Yes (integrated segment LCD driver) |
| Programming Interfaces | ISP, JTAG |
| Series | AVR ATmega |
Guia de Configuração de Pinos do ATMEGA169-16AU 64-tqfp (14x14 mm)
Configuração de pinos para ATMEGA169-16AU (pacote 64-tqfp (14x14 mm)). 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 ATMEGA169-16AU.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ATMEGA169-16AU é adequado para 6 aplicaçãos: LCD-Based Appliance Control, Energy and Utility Meters, Thermostats and HVAC Controllers, Handheld Measurement Instruments, Automotive Body and Comfort Electronics, Educational and Hobby Embedded Projects.
LCD-Based Appliance Control
The ATMEGA169-16AU is purpose-built for appliance front panels that need a segment LCD, a few buttons, and simple control logic in one chip. Its integrated LCD controller drives the display directly, eliminating a dedicated LCD driver IC and saving roughly $0.30-$1.00 of BOM cost per unit and PCB area. The 16KB Flash accommodates menu logic, state machines, and calibration code, while the 10-bit ADC reads temperature or level sensors. At 16 MHz with a 5V supply, response is immediate; for battery models, the AVR sleep modes allow microamp standby between button presses. Recommended companion parts include low-ESR 100nF decoupling capacitors on every VCC pin and a 16 MHz crystal with 22pF load capacitors.
Recomendado
Energy and Utility Meters
Electricity, water, and gas meters benefit directly from the ATMEGA169-16AU's combination of an integrated LCD driver for the tariff display and an 8-channel 10-bit ADC for analog measurement channels. The ADC digitizes shunt or divider inputs, while the AVR core executes the 16 MIPS needed for simple metering algorithms without a separate compute IC. ISP Flash permits field firmware updates through the existing SPI bus, reducing recall risk, and JTAG boundary-scan supports production test of the dense meter PCB. The -40C to +85C industrial temperature rating suits outdoor meter enclosures. Note that the 5V supply requirement at 16 MHz simplifies the mains-derived power supply design typical of panel meters.
Recomendado
Thermostats and HVAC Controllers
Programmable room thermostats need a readable display, keypad scanning, sensor inputs, and a control output - all of which the ATMEGA169-16AU integrates. The LCD controller renders setpoint and schedule information; GPIO lines scan a 4x4 matrix keypad; the 10-bit ADC reads an NTC thermistor for temperature feedback; and a timer output drives a relay or triac for the HVAC load. The 16 KB Flash holds schedule tables and PID control code with room to spare. AVR power-down sleep modes extend battery life in wall-battery units when the clock is lowered below 4 MHz. The industrial temperature rating covers unconditioned mounting locations such as utility rooms and attics.
Recomendado
Handheld Measurement Instruments
Portable test tools such as multifunction meters, cable testers, and diagnostic gauges exploit the ATMEGA169-16AU's single-chip integration. The 8-channel ADC switches between measurement inputs through a front-end multiplexer, the LCD shows readings and units, and the USART streams results to a PC or printer. The single-cycle multiply instruction accelerates calibration math and digital filtering on the AVR core, achieving real-time conversion rates at 16 MHz. Because the whole system lives in one 64-TQFP, handheld PCBs stay small and battery-frugal. Designers should budget the speed-voltage derating: at lower battery voltage, reduce the clock to maintain timing margin across the operating temperature range.
Recomendado
Automotive Body and Comfort Electronics
Legacy automotive comfort modules - seat controllers, mirror adjusters, and climate panels with LCD indicators - used the ATMEGA169-16AU for its industrial temperature rating of -40C to +85C and its ability to drive indicator LCDs without a companion chip. The ADC reads potentiometer position sensors on actuators, GPIO drives H-bridge inputs, and SPI links to the vehicle body controller. The 64 I/O lines handle switch matrices and lamp feedback in a single MCU. For new automotive designs, select the ATMEGA169PA (active status) or an AEC-Q100-qualified AVR, since the original ATMEGA169-16AU is obsolete and not automotive-qualified. JTAG boundary scan simplifies production ICT of the module PCB.
Recomendado
Educational and Hobby Embedded Projects
The ATmega169 family is popular in education and hobby projects - it was famously the MCU of the AVR Butterfly demonstration board, combining LCD, joystick, light sensor, and EEPROM in one self-contained platform. The AVR instruction set is widely taught, and open toolchains including AVR-GCC, avrdude, and the MegaCore Arduino hardware package explicitly support ATmega169. ISP programming requires only a low-cost programmer connected to the SPI header. Students benefit from datasheet-level access to the LCD, ADC, and TWI peripherals. For lab stock, ATMEGA329-16AU is a wise substitute since it uses the identical 64-TQFP footprint and toolchain while doubling available Flash for larger class projects.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATMEGA169-16AU — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATMEGA169P-16AU | ATMEGA329-16AU | ATMEGA649-16AU | ATMEGA165V-8AU |
|---|---|---|---|---|---|
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| Flash Memory | 16 KB (8K x 16) | 16 KB | 32 KB | 64 KB | 16 KB |
| Max Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 8 MHz |
| LCD Controller | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) | No |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Pin-to-Pin Compatibility | Reference | 100% pin-to-pin | Pin-to-pin (same footprint family) | Pin-to-pin (same footprint family) | Pin-to-pin (no LCD function on shared pins) |
Principais diferenciais
- Integrated segment LCD controller (vs ATMEGA165V-8AU)
- Full 16 MHz throughput (vs ATMEGA165V-8AU)
- 16KB Flash in the 64-pin LCD-AVR footprint (vs ATMEGA329-16AU)
- Errata status trade-off (vs ATMEGA169P-16AU)
Notas de projeto
The 16 MHz speed grade requires the high end of the AVR supply range per the Atmel datasheet speed-versus-voltage curves - approximately 4.5V to 5.5V for full-speed operation. Estimated: if your system runs at 3.3V, maximum safe clock is reduced substantially; either add a 5V regulator (e.g., a 7805-class LDO with adequate thermal margin) or derate the crystal to a speed grade valid at 3.3V. Decouple every VCC pin of the 64-TQFP with 100nF ceramics placed within 2mm of the pin, plus one 10uF bulk capacitor near the regulator output.
For the 64-TQFP (14x14 mm), route the JTAG (TCK/TMS/TDO/TDI) header to a standard 2x5 2.54mm connector even if unused - it enables boundary-scan production test and on-chip debug later. Keep the ISP header (MOSI, MISO, SCK, RESET, VCC, GND) on the same connector footprint many AVR boards standardize on. The LCD segment lines carry small AC signals; keep them short and away from the crystal traces to prevent ghost segments. Use a ground plane under the crystal with 22pF load capacitors for the 16 MHz oscillator.
Fusing RESET into an I/O, disabling SPIEN, or disabling JTAG can lock the device out of ISP and JTAG programming, requiring a 12V high-voltage parallel programmer (STK500 or equivalent) for recovery - double-check fuse settings before flashing. Second pitfall: the ATMEGA169-16AU is obsolete; when switching to ATMEGA169P or ATMEGA329, the device signature differs, so update the programmer device selection and recompile firmware. Third: ATMEGA165 variants lack the LCD controller - do not substitute it into LCD-based designs without adding an external driver.
Informações de conformidade
The -AU suffix historically denotes RoHS/lead-free TQFP packaging in Atmel nomenclature, but formal RoHS/REACH declarations were not present in the retrieved web data; obtain the certificate of conformance from the seller. Not AEC-Q100 qualified for automotive designs.