ATMEGA169P-16MCH - 8-bit AVR MCU 16MHz 16KB QFN-64 | Microchip
N.º da peça: ATMEGA169P-16MCH ✓ Ativo| Qtd. | Preço unitário | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
ATMEGA169P-16MCH Visão geral
An 8-bit AVR microcontroller is a single-chip computing device that combines a RISC processor core, program memory, data memory, and peripherals on one die. Within the power-management and control hierarchy of embedded systems, it replaces discrete logic plus a separate controller, and the ATmega169P family further distinguishes itself by integrating a segment LCD driver that most other AVR members lack, making it a system-on-chip for display-based instruments.
Key differentiating features include 133 powerful instructions, most executing in a single clock cycle, which yields approximately 1 MIPS per MHz of throughput; the self-programmable FLASH enables field firmware updates without an external programmer; and the on-chip LCD controller drives display glass directly, removing an external LCD driver IC from the bill of materials. The P suffix denotes the power-improved variant with lower power consumption versus the original ATmega169.
Architecturally, the AVR core uses a Harvard structure with separate buses for program and data, 32 general-purpose working registers directly connected to the ALU, allowing one-cycle instruction execution. Peripherals include SPI, UART, and an 8-channel 10-bit A/D converter, while the JTAG boundary-scan and debug capability supports on-chip-debug during development.
Typical applications include battery-powered metering instruments with segment LCDs, handheld measurement devices, appliance control panels, and industrial front-panel controllers where low power, integrated display drive, and in-field reprogrammability are decisive.
Design consideration: Microchip documents ATMEGA169PA as a functionally identical drop-in replacement for ATMEGA169P (application note AVR529), so new designs should evaluate the PA variant; supply voltage window 2.7V-5.5V must be respected for the 16 MHz speed grade.
This page synthesizes verified distributor listings, drop-in cross-reference data, and practical design notes not found in a single manufacturer datasheet page.
Alternativas drop-in para ATMEGA169P-16MCH — 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 ATMEGA169P-16MCH (mesmo formato e footprint) — diferindo em Package, ADC, RoHS Status, Throughput.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATMEGA169PA-16MCH
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATMEGA169P-16MCHR
✅ Drop-In✓ Em estoque
$2.45 / unidade
Ver ficha técnica →ATMEGA169P-16AU
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATMEGA169P-16MCH Classificações máximas e características elétricas
| Core Architecture | AVR 8-bit RISC |
| Largura do barramento de dados | 8 bit |
| Frequência máxima de clock | 16 MHz |
| FLASH Program Memory | 16 KB (8K x 16) |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Supply Voltage Range | 2.7 V to 5.5 V |
| I/O Ports | 53 |
| ADC | 8-channel, 10-bit |
| LCD Controller | Integrated segment LCD driver |
| Debug Interface | JTAG (on-chip-debug and boundary scan) |
| Instruction Set | 133 instructions, most single-cycle |
| Throughput | Up to 16 MIPS at 16 MHz (1 MIPS per MHz) |
| Encapsulamento | 64-QFN (7 x 7 mm) |
| Tipo de montagem | Surface Mount |
| Faixa de temperatura de operação | Industrial (-40C to +85C) |
| Lifecycle Stage | ACTIVE |
| Newer Device Available | ATMEGA169PA (drop-in per AVR529) |
| Status RoHS | unknown |
Guia de Configuração de Pinos do ATMEGA169P-16MCH 64-qfn (7 x 7 mm)
Configuração de pinos para ATMEGA169P-16MCH (pacote 64-qfn (7 x 7 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 ATMEGA169P-16MCH.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ATMEGA169P-16MCH é adequado para 6 aplicaçãos: Battery-Powered Metering Instruments, Handheld Measurement Devices, Appliance Control Panels, Industrial Front-Panel and HMI Controllers, Embedded Development and Education, Data Loggers with Local Display.
Battery-Powered Metering Instruments
The ATMEGA169P-16MCH fits utility and energy metering products because it combines a low-power AVR core with an integrated segment LCD controller in one 64-QFN die. The 2.7V to 5.5V supply range allows direct operation from a single lithium cell or buffered 3V/3.3V rail, while the LCD driver removes an external display driver IC, cutting board area and leakage paths that would otherwise drain batteries. The 10-bit, 8-channel ADC samples metering front-ends such as current-sense amplifiers or voltage dividers, and the 16 KB self-programmable FLASH supports calibration tables stored in the 512 B EEPROM. In such designs the MCU is typically clocked down well below 16 MHz or put in power-down sleep between measurement cycles; unlike a MCU-plus-LCD-driver two-chip solution, the single-chip approach reduces quiescent budget and improves long-term battery life for multi-year deployment intervals.
Recomendado
Handheld Measurement Devices
Portable handheld instruments - thermometers, lux meters, sound-level meters, and multifunction testers - benefit from the ATMEGA169P-16MCH's integration density. The on-chip LCD controller drives the segment display that forms the primary user interface, the 8-channel 10-bit ADC digitizes sensor outputs directly, and 53 I/O lines handle keypad matrices, buzzer drive, and communication headers simultaneously, which is difficult on smaller 28/32-pin AVRs. The 1 MIPS-per-MHz AVR core completes measurement-and-display refresh loops quickly at low clock rates, conserving power between samples. During development, the JTAG on-chip-debug interface permits real-time inspection of calibration routines without sacrificing pins beyond the four JTAG lines. The industrial temperature rating supports field use, and the 16 KB FLASH accommodates lookup-table-heavy measurement firmware with room for a UART boot loader enabling field firmware updates over a service cable.
Recomendado
Appliance Control Panels
White-goods and small-appliance front panels require a display, keypad scanning, and actuator control from a single cost-effective controller - precisely the ATMEGA169P-16MCH profile. The integrated LCD driver shows cycle status, temperature, and fault codes; a matrix keypad maps onto spare port pins from the 53 available I/O; and relays or TRIAC drivers connect through GPIO with appropriate buffering. The 5.5V maximum supply suits directly rectified transformer-fed control boards, while the -16 speed grade gives headroom for timing-critical AC zero-cross detection. The JTAG interface eases factory debugging of panel assemblies, and the self-programmable FLASH allows manufacturing-line firmware loading without removing parts from soldered PCBs. Against a two-chip MCU-plus-LCD-driver alternative, the single-package solution shortens the bill of materials and improves long-term sourcing because Microchip documents the PA variant as an ongoing drop-in successor.
Recomendado
Industrial Front-Panel and HMI Controllers
Industrial equipment HMIs share the same needs as appliance panels but face harsher electrical environments and wider temperature excursions, which the ATMEGA169P-16MCH's industrial rating and 64-QFN construction address. The segment LCD controller provides operator feedback, the ADC reads potentiometer and sensor inputs, and the SPI and UART peripherals communicate with backplane controllers or log data upstream. The 1 KB SRAM accommodates modest display buffering and state machines, while the 512 B EEPROM holds configuration and diagnostic counters that must survive power cycles. Boundary-scan capability through JTAG supports production test of assembled panel boards, detecting solder opens on the 64-ball QFN land pattern that visual inspection misses. Designers should budget the four JTAG pins or plan fuse-based repurposing after production, and use the documented AVR529 migration path to ATMEGA169PA for lifetime continuity of new builds.
Recomendado
Embedded Development and Education
The ATMEGA169P-16MCH is a practical teaching and prototyping platform because it exposes a complete peripheral set - UART, SPI, ADC, timers, LCD driver - on a single 8-bit device with well-documented AVR architecture. The JTAG on-chip-debug capability lets students and engineers step code, watch registers, and set breakpoints with standard Atmel-ICE-class tools, a significant learning advantage over parts with only debugWIRE. The 133-instruction AVR set executes mostly in a single cycle, making assembly-language timing behavior intuitive, and the 16 KB FLASH is large enough for C programs with a boot loader while still teaching memory budgets. The 64-pin QFN, while demanding careful PCB work, teaches fine-pitch surface-mount practice. Microchip's migration notes AVR506 and AVR529 additionally document real-world silicon revision practice, giving educators authentic obsolescence-management case material.
Recomendado
Data Loggers with Local Display
Standalone data loggers that show readings locally without a host computer match the ATMEGA169P-16MCH feature set directly: the ADC captures sensor channels, the 1 KB SRAM buffers sample records, the EEPROM stores calibration constants, and the integrated LCD makes the device usable in the field without connectivity. The UART streams batches to a PC when docked, and the SPI port attaches serial FLASH or SD-card interfaces for extended storage. Running the AVR core at reduced clock between ADC conversions keeps average current low for battery operation, and power-down sleep with periodic timer wake is well supported in the AVR architecture. The 53 I/O lines leave ample margin for sensor mux control, button input, and alarm outputs on one package. For new logger designs, the same board accepts the ATMEGA169PA drop-in with improved power figures, protecting the layout investment.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATMEGA169P-16MCH — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATMEGA169PA-16MCH | ATMEGA169P-16MCHR | ATMEGA169P-16AU |
|---|---|---|---|---|
| Package | 64-QFN (7x7 mm) | 64-QFN (7x7 mm) - same | 64-QFN (7x7 mm) - same | TQFP-64 (14x14 mm) - different footprint |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| FLASH Memory | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB |
| Supply Voltage Range | 2.7 V to 5.5 V | 1.8 V to 5.5 V (PA wide-voltage variant) | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Integrated LCD Controller | Yes | Yes | Yes | Yes |
| Drop-in Compatibility | Reference | Drop-in per Microchip AVR529 | Identical die, packaging variant only | Same pin functions, TQFP footprint requires PCB change |
Principais diferenciais
- Integrated segment LCD controller unique in this AVR class (vs ATMEGA168PB-MU)
- Guaranteed drop-in successor path exists (vs ATMEGA169PA-16MCH)
- JTAG on-chip-debug with boundary scan (vs ATMEGA168PB-MU)
Notas de projeto
Microchip's datasheet header for ATmega169P explicitly flags 'Newer Device Available ATMEGA169PA', and application note AVR529 documents that the PA is a functionally identical drop-in replacement passing the same qualification and production tests. For any new PCB spin, design in the ATMEGA169PA-16MCH ordering code from the start; the ATmega169P-16MCH should be reserved for maintaining existing validated builds. Note AVR506 further documents minor migration considerations from the original (non-P) ATmega169, useful if touching up very old designs.
The 64-QFN (7x7 mm) package places 64 lands on a 0.5 mm pitch, so stencil design matters: use stepped stencils with reduced aperture ratio (typically 0.5-0.6 of land area for the center thermal pad) to prevent excess solder paste causing bridging on peripheral lands. The exposed die paddle should be soldered to a grounded copper pour for mechanical reliability and thermal dissipation, with an array of thermal vias. Boundary-scan via JTAG is recommended for post-assembly testing since peripheral lands are not visually inspectable.
The verified specification window is 2.7 V to 5.5 V. Verify the frequency-versus-VCC curve in the Microchip ATmega169P datasheet when clocking near 16 MHz at the low end of the supply range; if the design must run full speed from a 3.0 V lithium cell over its discharge curve, confirm the safe operating region or consider the ATMEGA169PA wide-voltage variant. Decouple every VCC/AVCC pin pair with 100 nF close to the pins and provide a bulk 4.7-10 uF reservoir; treat the LCD bias rail carefully since LCD contrast depends on a stable drive voltage.
JTAG occupies dedicated pins shared with port functions; if on-chip-debug is needed on the production board, reserve the four JTAG lines as routing access test points. The 8-channel 10-bit ADC requires AVCC decoupling and a quiet reference; keep switched LCD drive lines away from ADC inputs, as segment multiplexing injects periodic noise that appears as converter jitter. Where analog accuracy matters, sample between LCD frame updates or average multiple conversions in firmware.
Informações de conformidade
Compliance status not explicitly stated in the retrieved data; verify on the Microchip ATmega169P product page or DigiKey compliance documents before specification.
