ATMEGA168V-10AUR - 8-bit AVR MCU 16KB Flash 10MHz | Microchip
MPN： ATMEGA168V-10AUR ✓ 啟用中ATMEGA168V-10AUR 概覽
An 8-bit AVR microcontroller is a single-chip processor built on the Advanced RISC architecture, combining program Flash, data SRAM, EEPROM, peripherals, and general-purpose I/O on one die. Within the power management and embedded control hierarchy, MCUs like the ATmega168V sit at the node between raw logic ICs and application-specific SoCs, executing user firmware for sensing, control, and communication tasks.
Key features include 133 powerful instructions with mostly single-cycle execution, 23 programmable I/O lines, three flexible timer/counters, an 8-channel 10-bit ADC, and debugWIRE on-chip debugging. The V-grade device supports the extended 1.8V to 5.5V voltage range at up to 10MHz, making it well suited to battery-powered designs.
The AVR core uses a Harvard architecture with 32 general-purpose working registers directly connected to the ALU, allowing two independent registers to be accessed in one instruction executed in a single clock cycle. Read-while-write ISP Flash enables firmware updates in the field without halting execution, while power-saving modes (idle, ADC noise reduction, power-save, power-down, standby) extend battery life.
Typical applications include battery-powered sensor nodes, industrial control panels, consumer appliance interfaces, and low-voltage handheld instruments where the wide supply range and 10MHz performance fit.
Design consideration: the 10MHz maximum frequency derates with supply voltage below 2.7V, so verify clock-versus-VCC operating envelopes in the manufacturer datasheet before selecting a crystal.
This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 ATMEGA168V-10AUR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATMEGA168V-10AUR （相同外形與佔位） — 差異在於 Package, Communication Interfaces, Instructions, Working Registers, Flash Memory.
ATMEGA168PV-10AUR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA168A-AUR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA168PB-AUR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA168V-10AI
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA168-20AUR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATMEGA88V-10AU
✅ 直接替換聯絡詢價
查看資料表 →ATMEGA168V-10AUR 最大額定值與電氣特性
| Core Architecture | AVR 8-bit RISC |
| Flash Memory | 16 KB (8K x 16) ISP |
| SRAM | 1 KB |
| EEPROM | 512 B |
| 最大時脈頻率 | 10 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Instructions | 133, most single-cycle |
| General Purpose I/O | 23 programmable I/O lines |
| Working Registers | 32 x 8-bit |
| Timers/Counters | 3 (two 8-bit, one 16-bit) |
| ADC | 8-channel 10-bit |
| Debug Interface | debugWIRE on-chip debugging |
| 封裝 | 32-TQFP (7x7 mm) |
| 安裝類型 | Surface Mount |
| Packaging | Tape & Reel |
| 生命週期狀態 | Active |
ATMEGA168V-10AUR 腳位配置
| 腳位 1 | PD3 (PCINT19/OC2B/INT1) — Port D, bit 3 / pin-change interrupt / Timer2 output compare B / external interrupt 1 |
| 腳位 2 | PD4 (PCINT20/XCK/T0) — Port D, bit 4 / pin-change interrupt / USART external clock / Timer0 clock input |
| 腳位 3 | GND — Ground |
| 腳位 4 | VCC — Digital supply voltage |
| 腳位 5 | GND — Ground |
| 腳位 6 | VCC — Digital supply voltage |
| 腳位 7 | PB6 (PCINT6/XTAL1/TOSC1) — Port B, bit 6 / crystal oscillator input / timer oscillator input |
| 腳位 8 | PB7 (PCINT7/XTAL2/TOSC2) — Port B, bit 7 / crystal oscillator output / timer oscillator output |
| 腳位 9 | PD5 (PCINT21/OC0B/T1) — Port D, bit 5 / pin-change interrupt / Timer0 output compare B / Timer1 clock input |
| 腳位 10 | PD6 (PCINT22/OC0A/AIN0) — Port D, bit 6 / pin-change interrupt / Timer0 output compare A / analog comparator positive input |
| 腳位 11 | PD7 (PCINT23/AIN1) — Port D, bit 7 / pin-change interrupt / analog comparator negative input |
| 腳位 12 | PB0 (PCINT0/CLKO/ICP1) — Port B, bit 0 / pin-change interrupt / system clock output / Timer1 input capture |
| 腳位 13 | PB1 (PCINT1/OC1A) — Port B, bit 1 / pin-change interrupt / Timer1 output compare A |
| 腳位 14 | PB2 (PCINT2/SS/OC1B) — Port B, bit 2 / pin-change interrupt / SPI slave select / Timer1 output compare B |
| 腳位 15 | PB3 (PCINT3/MOSI/OC2A) — Port B, bit 3 / pin-change interrupt / SPI master output / Timer2 output compare A |
| 腳位 16 | PB4 (PCINT4/MISO) — Port B, bit 4 / pin-change interrupt / SPI master input |
| 腳位 17 | PB5 (PCINT5/SCK) — Port B, bit 5 / pin-change interrupt / SPI serial clock |
| 腳位 18 | AVCC — ADC supply voltage |
| 腳位 19 | ADC6 — ADC input channel 6 |
| 腳位 20 | AREF — Analog reference voltage for ADC |
| 腳位 21 | GND — Ground |
| 腳位 22 | ADC7 — ADC input channel 7 |
| 腳位 23 | PC0 (PCINT8/ADC0) — Port C, bit 0 / pin-change interrupt / ADC input channel 0 |
| 腳位 24 | PC1 (PCINT9/ADC1) — Port C, bit 1 / pin-change interrupt / ADC input channel 1 |
| 腳位 25 | PC2 (PCINT10/ADC2) — Port C, bit 2 / pin-change interrupt / ADC input channel 2 |
| 腳位 26 | PC3 (PCINT11/ADC3) — Port C, bit 3 / pin-change interrupt / ADC input channel 3 |
| 腳位 27 | PC4 (PCINT12/SDA/ADC4) — Port C, bit 4 / pin-change interrupt / TWI data / ADC input channel 4 |
| 腳位 28 | PC5 (PCINT13/SCL/ADC5) — Port C, bit 5 / pin-change interrupt / TWI clock / ADC input channel 5 |
| 腳位 29 | PC6 (PCINT14/RESET) — Port C, bit 6 / pin-change interrupt / Reset (active low); also debugWIRE interface |
| 腳位 30 | PD0 (PCINT16/RXD) — Port D, bit 0 / pin-change interrupt / USART receiver input |
| 腳位 31 | PD1 (PCINT17/TXD) — Port D, bit 1 / pin-change interrupt / USART transmitter output |
| 腳位 32 | PD2 (PCINT18/INT0) — Port D, bit 2 / pin-change interrupt / external interrupt 0 |
典型應用
ATMEGA168V-10AUR 適用於 6 應用s: Battery-Powered Sensor Nodes, Industrial Control Panels, Consumer Appliance Interfaces, Handheld Low-Voltage Instruments, RC Hobby and Servo Control, Arduino-Compatible Prototyping.
Battery-Powered Sensor Nodes
The ATMEGA168V-10AUR fits battery-powered sensor nodes because its 1.8V to 5.5V supply range matches two-cell alkaline and lithium coin-cell discharge curves, eliminating a regulator stage and its quiescent drain. In these nodes the MCU periodically wakes from power-down mode, samples an external sensor through the 8-channel 10-bit ADC, and transmits results over SPI or TWI before returning to sleep. Unlike fixed-3.3V MCUs, the V-grade continues operating down to 1.8V at 10MHz, extracting the full cell capacity. The trade-off is the 10MHz ceiling, which is ample for periodic sensing but not for heavy signal processing.
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Industrial Control Panels
In industrial control panels the ATMEGA168V-10AUR serves as a compact logic controller driving relays, reading switches, and sequencing outputs. Its 23 programmable I/O lines, three timer/counters with PWM, and watchdog timer cover typical panel tasks such as motor start sequencing, lamp indication, and fault latching. The 5.5V maximum allows direct connection to buffered 5V industrial logic levels, while the industrial temperature packaging variant supports panel environments. Because ISP Flash supports read-while-write updates, firmware can be revised in installed panels through a bootloader on the USART without desoldering the device, reducing field service cost.
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Consumer Appliance Interfaces
Consumer appliances such as coffee makers, fans, and small heating devices use the ATMEGA168V-10AUR for user-interface control: capacitive or mechanical key scanning, LED or segment display driving, and temperature regulation with the 10-bit ADC reading an NTC sensor. The 16KB Flash accommodates menu logic, display drivers, and control loops, while the 512B EEPROM stores user presets through power cycles. The 10MHz clock is sufficient for scan-and-display workloads at low EMI, an important consideration for appliances near radios. Sleep modes permit compliant standby-power targets when clocked slowly in idle or power-save mode between key presses.
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Handheld Low-Voltage Instruments
Handheld measurement instruments benefit from the ATMEGA168V-10AUR's 1.8V operation, which allows direct powering from a single lithium cell with a small boost stage or two cells without regulation. The 8-channel 10-bit ADC digitizes analog front-end outputs, the 16-bit Timer/Counter1 gates frequency measurements, and the USART streams readings to a PC. debugWIRE enables on-chip debugging over the RESET pin during development, reducing prototype iterations. Power-saving modes between measurements extend battery life substantially; an estimated duty cycle of 1 percent active at a few milliamps yields months of runtime from AA cells in typical datalogging instruments.
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RC Hobby and Servo Control
The ATMEGA168V-10AUR is widely used in RC hobby electronics for servo timing and receiver tasks because the 16-bit Timer/Counter1 generates precise 1-2ms servo pulses and the hardware USART decodes standard RC receiver frames. The 3.3V-5V operating window matches common LiPo receiver rails through simple regulation, and the 10MHz clock provides resolution adequate for 8-bit servo positioning. ISP Flash with bootloader support lets enthusiasts reflash firmware in the field. Compared to dedicated servo ICs, the MCU adds programmable mixing, failsafe, and telemetry logic in the same footprint, making it a flexible single-chip control solution.
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Arduino-Compatible Prototyping
The ATmega168 family is the classic core of early Arduino boards (Arduino NG and Diecimila used ATmega168 variants), so the ATMEGA168V-10AUR drops into Arduino-compatible prototypes using the standard bootloader, AVR-GCC toolchain, and Arduino IDE support. The 16KB Flash minus bootloader space still leaves room for moderate sketches, and the 23 I/O lines, TWI, SPI, and 10-bit ADC mirror the Uno-style peripheral set at the V-grade's 1.8V-5.5V range. For battery-operated prototypes running at 3.3V/8MHz or 1.8V-referenced sensors, the V-grade avoids the undervoltage behavior seen with standard 20MHz parts, ensuring reliable flash writes across the discharge curve.
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推薦產品摘要
工程參考資料，適用於 ATMEGA168V-10AUR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATMEGA168PV-10AUR | ATMEGA168A-AUR | ATMEGA168PB-AUR | ATMEGA88V-10AU |
|---|---|---|---|---|---|
| Package | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 8 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM | 512 B | 512 B | 512 B | 1 KB | 512 B |
| Max Clock Frequency | 10 MHz | 10 MHz | 20 MHz | 20 MHz | 10 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Low-Power Technology | Standard V-grade | picoPower | Standard | Standard (enhanced) | Standard V-grade |
主要差異化特點
- Lowest-voltage operation in the ATmega168 family (對比ATMEGA168-20AUR)
- Larger program memory than the pin-compatible ATmega88 (對比ATMEGA88V-10AU)
- picoPower successor available in same footprint (對比ATMEGA168PV-10AUR)
設計說明
Verify the clock-versus-VCC operating envelope before finalizing the power architecture. The V-grade permits 1.8V to 5.5V at up to 10MHz, but flash write operations have voltage requirements - below the minimum for programming, EEPROM and Flash writes can corrupt data. If the design writes to EEPROM across the full battery discharge curve, add a brown-out detector (internal BOD fuse setting) or gate writes above a safe threshold, for example 2.7V, in firmware.
Place a 100nF ceramic decoupling capacitor directly across each VCC/GND pin pair (pins 4/3 and 6/5 of the TQFP-32) within 2mm of the pins, plus a bulk 4.7uF-10uF capacitor near the supply entry. Connect AVCC (pin 18) to VCC through an LC filter (10uH + 100nF) when ADC accuracy matters, and tie AREF (pin 20) to ground via 100nF when using the internal reference. Do not route fast digital signals under the crystal traces to PB6/PB7.
The most frequent integration errors are fuse-related: setting a clock fuse for an external crystal that is absent bricks the board into permanent reset. Always program clock fuses with the hardware present and validate via ISP before enabling debugWIRE, since debugWIRE occupies the RESET pin and disables ISP until disabled through the debugger. Also note PC6/RESET is active-low; leaving it floating causes erratic resets - use a 10k pull-up.
合規資訊
RoHS compliance and lead-free status inferred from standard Microchip Tape & Reel commercial-grade product offerings; REACH and halogen-free status not explicitly stated in provided data.