ATMEGA162-16MUR - 8-Bit AVR MCU 16MHz 16KB Flash | Microchip
MPN: ATMEGA162-16MUR ✓ Hoạt độngATMEGA162-16MUR Tóm tắt
An 8-bit microcontroller is a complete computing system integrated on a single silicon die: it combines a processor core (in this case the AVR enhanced RISC engine), non-volatile program memory, volatile data memory, and peripherals such as UARTs, SPI, and timers within one package. Microcontrollers sit at the lowest level of the embedded-systems hierarchy, below SoCs and application processors, and are the standard choice for dedicated control, communication, and sensing tasks in industrial and consumer products.
Key differentiating features include 131 powerful instructions, most of which execute in a single clock cycle, 32 x 8 general-purpose working registers, and fully static operation to 16 MHz. Throughput approaches 1 MIPS per MHz, letting designers trade clock speed directly against power consumption. The dual UARTs make the part especially attractive for multi-port serial designs.
Technically, the ATmega162 is a low-power CMOS device based on the AVR architecture, with self-programming Flash that supports bootloader-based firmware updates in the field, and a JTAG interface that enables boundary-scan testing and true on-chip debug without sacrificing pins.
Typical applications include industrial control nodes, dual-channel communication gateways leveraging the two USARTs, and legacy serial-system maintenance where ATmega161-class pinouts must be preserved.
Design consideration: the supply range is 2.7V to 5.5V, but the 16 MHz speed grade assumes 4.5V-5.5V operation; below that, derate the clock frequency per the manufacturer datasheet.
This page synthesizes distributor pricing, verified drop-in alternatives, application guidance, and design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA162-16MUR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATMEGA162-16MUR (cùng hình factor và footprint) — khác nhau ở Package, Instruction Set, Supply Voltage Range, Flash Program Memory, Program Memory Size.
ATMEGA162-16MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA162V-8MUR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA162-16MI
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA16-16MUR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA162-16MUR Tỷ lệ tối đa & tính chất điện
| Core | AVR 8-bit RISC |
| Clock Frequency | 16 MHz |
| Performance | 16 MIPS at 16 MHz (approx. 1 MIPS/MHz) |
| Flash Program Memory | 16 KB (8K x 16), self-programming |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Instruction Set | 131 instructions, most single-cycle |
| General Purpose Registers | 32 x 8 |
| Debug / Test Interface | JTAG (on-chip debug and boundary scan) |
| Hộp | 44-VQFN (7x7 mm), exposed pad |
| Kiểu lắp đặt | Surface Mount |
Hướng dẫn cấu hình chân ATMEGA162-16MUR 44-vqfn (7x7 mm), exposed pad
Cấu hình chân cho ATMEGA162-16MUR (44-vqfn (7x7 mm), exposed pad gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho ATMEGA162-16MUR.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ATMEGA162-16MUR phù hợp cho 6 Áp dụngs: Dual-UART Industrial Communication Gateways, Legacy ATmega161 System Maintenance and Upgrade, Embedded Field-Updateable Firmware Nodes, Boundary-Scan and JTAG Production Test, 5V Serial Sensor and Telemetry Nodes, Prototype and Education Platforms on 5V AVR.
Dual-UART Industrial Communication Gateways
The ATMEGA162-16MUR's defining feature for industrial gateways is its pair of hardware USARTs, letting one port link to a fieldbus, modem, or RF module while the second serves a local service console or a second serial bus - all without software-serial timing jitter. At 16 MHz the AVR core delivers 16 MIPS, ample headroom for protocol conversion such as Modbus ASCII/RTU framing, and the 1KB SRAM buffers message frames. Running at 4.5V-5.5V matches noisy industrial 5V logic levels. The trade-off: no on-chip ADC means analog sensing must use an external converter such as the MCP3204 via SPI.
Được đề xuất
Legacy ATmega161 System Maintenance and Upgrade
The ATmega162 is positioned by Microchip as the enhanced successor to the ATmega161, making the ATMEGA162-16MUR the standard choice for sustaining legacy ATmega161-based industrial boards. Designers gain double the Flash (16KB vs 8KB), a second USART, and JTAG on-chip debugging while retaining the familiar AVR architecture and register model, which minimizes firmware rework. Because the -16MUR ships in tape-and-reel format, existing SMT production lines can drop it into existing assembly programs. Verify fuses and JTAGEN pin behavior during migration, since the added JTAG port claims PORTC pins that ATmega161 code may have used as GPIO.
Được đề xuất
Embedded Field-Updateable Firmware Nodes
The 16KB self-programming Flash of the ATMEGA162-16MUR supports boot-loader-based firmware updates, ideal for deployed nodes that cannot be physically recalled. A bootloader occupies the protected boot section and receives new firmware over either USART, then reprograms application flash in-system - a pattern documented in the Microchip ATmega162 datasheet. Lock-bit configuration protects the bootloader from corruption. The 512B EEPROM stores calibration and network parameters across power cycles. At 16 MHz, 16 MIPS throughput executes a flash-write state machine plus serial framing concurrently. Design caution: reserve adequate boot-section size and always validate firmware CRC before jumping to newly written code.
Được đề xuất
Boundary-Scan and JTAG Production Test
Manufacturing lines benefit from the ATMEGA162-16MUR's integrated JTAG interface, which supports boundary-scan testing of board-level interconnects as well as on-chip debugging - both handled by a single four-wire port. In-circuit test fixtures can validate solder joints to surrounding devices without physical probes, and the same JTAG chain programs flash and performs functional verification, consolidating test steps. This is a differentiator versus ADC-equipped ATmega16 parts in the same package family, which also include JTAG but with different peripheral mapping. Configure JTAGEN fuse correctly; disable it only after confirming no production test depends on boundary scan.
Được đề xuất
5V Serial Sensor and Telemetry Nodes
In 5V sensor telemetry nodes, the ATMEGA162-16MUR offers 16 MIPS of processing for filtering and framing, two USARTs (one to the radio/cellular modem, one to the sensor bus or GPS receiver), SPI for external ADCs, and a fully static core that tolerates slow or gated clocks. The 2.7V-5.5V supply range permits direct battery-backed 5V rails, and the 44-VQFN 7x7 mm exposed-pad package gives compact, thermally efficient mounting on small telemetry PCBs. The exposed pad should be soldered to a ground pour for both thermal relief and EMI reduction. Use sleep modes between transmissions to conserve battery budget.
Được đề xuất
Prototype and Education Platforms on 5V AVR
The ATMEGA162-16MUR fits breadboard-style and socketed educational platforms thanks to its standard AVR toolchain support (AVR-GCC, Microchip Studio, AVRDUDE) and multiple programming paths - SPI ISP, JTAG, or UART bootloader. Students and prototypers exercise dual-UART communication, interrupt-driven serial I/O, and bootloader self-programming on one low-cost part. The tray-packaged ATMEGA162-16MU variant is often preferred for hand assembly, while the -16MUR reel suits lab kit volume builds. Note the part lacks an on-chip ADC, so analog lab exercises require an external SPI ADC such as the MCP3204, which doubles as a lesson in serial peripheral interfacing.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA162-16MUR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATMEGA162-16MU | ATMEGA162V-8MUR | ATMEGA162-16MI | ATMEGA16-16MUR | ATMEGA161-16AI |
|---|---|---|---|---|---|---|
| Package | 44-VQFN (7x7) exposed pad | 44-VQFN (7x7) - same | 44-VQFN (7x7) - same | 44-VQFN (7x7) - same | 44-VQFN (7x7) - same | 44-TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 8 KB |
| EEPROM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B |
| Max Clock Frequency | 16 MHz (16 MIPS) | 16 MHz | 8 MHz | 16 MHz | 16 MHz | 16 MHz |
| UART Count | 2 USARTs | 2 USARTs | 2 USARTs | 2 USARTs | 1 USART | 1 USART |
| ADC | None | None | None | None | 10-bit ADC (8 ch) | None |
| JTAG Debug | Yes | Yes | Yes | Yes | Yes | No |
Bảo phân biệt quan trọng
- Dual hardware USARTs for multi-channel serial designs (vsATMEGA16-16MUR)
- JTAG on-chip debugging and boundary scan (vsATMEGA161-16AI)
- 1 MIPS/MHz efficiency with self-programming Flash (vsATMEGA162V-8MUR)
Ghi chú thiết kế
Respect the frequency-voltage derating curve in the Microchip ATmega162 datasheet: the -16MUR 16 MHz speed grade is guaranteed only at the upper end of the 2.7V-5.5V supply range (roughly 4.5V-5.5V). Operating at 3.3V requires derating the clock to about 8 MHz or below; otherwise execution becomes unreliable. If your design is fixed at 3.3V, select the ATMEGA162V-8MUR variant, which is specified for low-voltage 8 MHz operation instead of forcing the -16MUR outside its safe operating region.
The 44-VQFN 7x7 mm package has an exposed pad on the bottom that must be connected to ground. Design the land pattern with a corresponding thermal via array (typically 4-6 vias) into the ground plane to ensure reliable soldering and low ground impedance. Place 100 nF ceramic decoupling capacitors at each supply pin pair within 2 mm of the package, plus bulk 10 uF near the regulator. For VQFN assembly, specify a 0.1-0.125 mm stencil aperture reduction for the center pad to prevent solder bridging during reflow.
The JTAGEN fuse is programmed by default, meaning PORTC pins are assigned to the JTAG interface at power-up. Legacy ATmega161 code migrated to the ATmega162 often expects those pins as general-purpose I/O, producing mysterious port faults. Either disable JTAGEN if you do not need boundary-scan/debug, or redesign firmware to avoid PORTC GPIO. Also verify lock-bit and boot-section fuses when using the self-programming Flash for bootloaders, and always validate a CRC on received firmware before jumping to freshly written application code in the field.
Thông tin tuân thủ
Compliance status not explicitly stated in the captured distributor data. Verify on the Microchip product page or via the distributor material declaration sheet for the exact ordering code.