ATMEGA162V-8AU - 8-bit AVR MCU 16KB Flash 8MHz TQFP-44 | Microchip
MPN: ATMEGA162V-8AU ✓ Hoạt độngATMEGA162V-8AU Tóm tắt
Key features include 8 MHz maximum CPU clock speed, 35 programmable I/O lines, dual UART interfaces, SPI, TWI (I2C-compatible), and 16 MIPS throughput at 16 MHz. The "V" suffix designates the 1.8V-5.5V wide operating voltage range optimized for battery-powered applications, while the "-8" speed grade limits maximum clock to 8 MHz at the lower end of the voltage range. The ATmega162V is the low-voltage variant of the ATmega162 family, sharing identical peripherals and pinout with the standard ATmega162 (which operates 2.7V-5.5V up to 16 MHz).
The AVR enhanced RISC architecture executes most instructions in a single clock cycle, achieving throughputs approaching 1 MIPS per MHz. This allows the system designer to optimize power consumption versus processing speed. Five sleep modes (Idle, Power-save, Power-down, Standby, Extended Standby) plus on-chip peripherals make the device suitable for energy-aware designs. The JTAG interface complies with IEEE 1149.1 standard, supporting boundary-scan and on-chip debug via debugWIRE or JTAG.
Typical applications include industrial control systems, battery-powered sensor nodes, building automation, motor control peripherals, USB-to-UART bridges, and embedded communication gateways that need two serial ports. The dual UART is a distinctive feature that simplifies designs requiring simultaneous host and peripheral serial connectivity. Industrial temperature rating (-40C to +85C) and 1.8V minimum Vcc enable 2x AA battery operation with extended runtime.
When designing with this device, note that the "V" variant's lower Vcc_min requires the -8 speed grade; using the standard ATmega162-16AU instead allows higher clock frequencies but raises Vcc_min to 2.7V. Decoupling requires 100nF on each Vcc pin placed within 5mm, plus a 10uF bulk capacitor on the main rail. The 44-TQFP (10x10) footprint is identical to ATmega162-16AU and ATmega162V-8PU, enabling PCB reuse across the family.
This page synthesizes distributor pricing, drop-in alternatives across the ATmega162 family, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA162V-8AU — 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 ATMEGA162V-8AU (cùng hình factor và footprint) — khác nhau ở Throughput, Instruction Set, Package, Core Architecture, Operating Temperature.
ATMEGA162-16AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA162V-8AUR
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Xem tài liệu →ATMEGA162V-8AU Tỷ lệ tối đa & tính chất điện
| Core Architecture | AVR 8-bit RISC |
| CPU Clock Speed (max) | 8 MHz |
| Throughput | 8 MIPS at 8 MHz |
| Program Memory (Flash) | 16 KB (8K x 16) |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Operating Voltage Range | 1.8 V to 5.5 V (V variant) |
| Programmable I/O Lines | 35 |
| UART Interfaces | 2 |
| SPI | Yes |
| TWI (I2C-compatible) | Yes |
| JTAG / debugWIRE | Yes (IEEE 1149.1) |
| Hộp | 44-TQFP (10x10 mm) |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Sleep Modes | 5 (Idle, Power-save, Power-down, Standby, Extended Standby) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATMEGA162V-8AU
| Chân 1 | VCC — Digital supply voltage (1.8-5.5V) |
| Chân 2 | XTAL2 — Crystal oscillator output |
| Chân 3 | XTAL1 — Crystal oscillator input |
| Chân 4 | RESET — Reset input (active low) |
| Chân 5 | PD0 — Port D bit 0 / RXD1 (UART1 receive) |
| Chân 6 | PD1 — Port D bit 1 / TXD1 (UART1 transmit) |
| Chân 7 | PD2 — Port D bit 2 / INT0 |
| Chân 8 | PD3 — Port D bit 3 / INT1 |
| Chân 9 | PD4 — Port D bit 4 |
| Chân 10 | PD5 — Port D bit 5 |
| Chân 11 | PD6 — Port D bit 6 |
| Chân 12 | PD7 — Port D bit 7 |
| Chân 13 | GND — Ground |
| Chân 14 | AVCC — Analog supply voltage |
| Chân 15 | AREF — ADC reference voltage |
| Chân 16 | PA0 — Port A bit 0 / ADC0 |
| Chân 17 | PA1 — Port A bit 1 / ADC1 |
| Chân 18 | PA2 — Port A bit 2 / ADC2 |
| Chân 19 | PA3 — Port A bit 3 / ADC3 |
| Chân 20 | PA4 — Port A bit 4 / ADC4 |
| Chân 21 | PA5 — Port A bit 5 / ADC5 |
| Chân 22 | PA6 — Port A bit 6 / ADC6 |
| Chân 23 | PA7 — Port A bit 7 / ADC7 |
| Chân 24 | AGND — Analog ground |
| Chân 25 | PC0 — Port C bit 0 / SCL |
| Chân 26 | PC1 — Port C bit 1 / SDA |
| Chân 27 | PC2 — Port C bit 2 |
| Chân 28 | PC3 — Port C bit 3 |
| Chân 29 | PC4 — Port C bit 4 |
| Chân 30 | PC5 — Port C bit 5 |
| Chân 31 | PC6 — Port C bit 6 |
| Chân 32 | PC7 — Port C bit 7 |
| Chân 33 | PB0 — Port B bit 0 / T0 |
| Chân 34 | PB1 — Port B bit 1 / T1 |
| Chân 35 | PB2 — Port B bit 2 / AIN0 |
| Chân 36 | PB3 — Port B bit 3 / AIN1 |
| Chân 37 | PB4 — Port B bit 4 / SS |
| Chân 38 | PB5 — Port B bit 5 / MOSI |
| Chân 39 | PB6 — Port B bit 6 / MISO |
| Chân 40 | PB7 — Port B bit 7 / SCK |
| Chân 41 | PE0 — Port E bit 0 / RXD0 |
| Chân 42 | PE1 — Port E bit 1 / TXD0 |
| Chân 43 | PE2 — Port E bit 2 / OC1B |
| Chân 44 | VCC — Digital supply voltage (1.8-5.5V) |
Ứng dụng tiêu biểu
ATMEGA162V-8AU phù hợp cho 6 Áp dụngs: Industrial Control Systems, Battery-Powered Sensor Nodes, USB-to-UART Bridge Devices, Building Automation Gateways, Motor Control Peripherals, Embedded Communication Modules.
Industrial Control Systems
The ATMEGA162V-8AU fits industrial control with its 8 MIPS throughput, dual UART, and 1.8-5.5V operation. The 35 programmable I/O lines handle sensors, actuators, and HMI peripherals without external expanders. Industrial temperature rating (-40C to +85C) and JTAG debug support simplify field diagnostics. Power-down mode with BOD enables unattended monitoring stations.
Được đề xuất
Battery-Powered Sensor Nodes
The ATMEGA162V-8AU's 1.8V Vcc_min enables direct 2x AA battery operation without boost converters. Five sleep modes reduce quiescent current to a few microamps, supporting multi-year battery life for wireless sensor nodes. The 1 KB SRAM and 16 KB Flash accommodate ZigBee/BLE protocol stacks or LoRaWAN drivers. The 8 MHz throughput handles periodic sensing and reporting.
Được đề xuất
USB-to-UART Bridge Devices
The ATMEGA162V-8AU's dual UART is ideal for USB-to-UART bridges that also need a secondary debug port. At 8 MHz the device can bit-bang USB low-speed or drive CDC ACM class devices via software stacks. Industrial temperature rating and 5V tolerance suit industrial USB hosts. JTAG allows firmware updates over USB without external programmers.
Được đề xuất
Building Automation Gateways
The ATMEGA162V-8AU's dual UART handles Modbus RTU and BACnet MS/TP simultaneously, common building automation protocols. SPI connects to Ethernet controllers or Wi-Fi modules for cloud connectivity. The 16 KB Flash stores protocol stacks, and JTAG supports field firmware upgrades via boundary-scan. Wide Vcc tolerance handles long 24V industrial wiring drops.
Được đề xuất
Motor Control Peripherals
The ATMEGA162V-8AU generates PWM and timing signals for stepper and BLDC motor control peripherals with its 16-bit timers. At 8 MIPS the device computes commutation tables for small brushless motors in real time. The 35 I/O lines drive gate drivers and read Hall sensors. Dual UART connects to host controllers for command/status reporting in distributed motor networks.
Được đề xuất
Embedded Communication Modules
The ATMEGA162V-8AU's SPI + UART + TWI peripherals form a flexible gateway between wireless modules and host processors. Its 8 MIPS throughput runs GSM/LoRa/BLE module command interpreters while JTAG enables in-circuit programming during OEM integration. Industrial temperature rating suits outdoor enclosures. 1.8V operation supports solar-powered remote terminals.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA162V-8AU — 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 | ATMEGA162-16AU | ATMEGA162V-8AUR | ATMEGA162V-8MU |
|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-MLF (10x10 mm) - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max CPU Clock | 8 MHz | 16 MHz | 8 MHz | 8 MHz |
| Operating Voltage (Vcc) | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Flash Program Memory | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM | 512 B | 512 B | 512 B | 512 B |
| UART Interfaces | 2 | 2 | 2 | 2 |
| I/O Lines | 35 | 35 | 35 | 35 |
| Temperature Range | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
Bảo phân biệt quan trọng
- Lowest Vcc_min in ATmega162 family at 1.8V (vsATMEGA162-16AU)
- True drop-in with extended temperature data (vsATMEGA162V-8AUR)
- TQFP-44 form factor for hand-soldering (vsATMEGA162V-8MU)
Ghi chú thiết kế
Decoupling: Place a 100nF ceramic capacitor on each VCC/AVCC pin within 5mm of the IC. Add a single 10uF tantalum or ceramic bulk capacitor on the main VCC rail. The 1.8V Vcc_min of the V variant requires a regulated LDO output for 2x AA battery systems - the TPS7A02 or similar 200mA LDO provides clean supply. Brown-out detection (BOD) should be enabled in fuses to prevent code corruption at low Vcc.
TQFP-44 thermal management: The TQFP-44 package has theta_JA around 50-60 C/W depending on PCB copper area. At 8 MHz with all peripherals enabled, typical active current is 5-10 mA at 3.3V, dissipating only 30 mW - thermal concerns are negligible for this device. The MLF-44 variant has a thermal pad that must be soldered to a ground copper pour (minimum 1 sq inch) for optimal thermal performance and electrical grounding.
PCB layout for JTAG: Place the 6-pin JTAG header (TCK, TMS, TDO, TDI, VCC, GND) within 50mm of the MCU for reliable debugWIRE/JTAG connection. Use series 100 ohm termination resistors on JTAG signals if traces exceed 25mm. Route XTAL1/XTAL2 traces short (under 10mm) and guard with ground plane to minimize EMI. Keep crystal traces away from switching power or high-current signals.
Common pitfalls: (1) Do not confuse ATmega162 with ATmega162V - the non-V variant cannot operate below 2.7V. (2) The -8 speed grade of the V variant is required for 1.8V operation; do not attempt higher speeds. (3) The dual UART requires proper register configuration for baud-rate generator independent setup. (4) JTAG and debugWIRE cannot be used simultaneously - select one in fuses. (5) ISP programming requires the RESET pin to be pulled high externally.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C), not AEC-Q100 automotive qualified. Halogen-free status not explicitly stated in available data.