ATMEGA168V-10PI - 8-bit AVR MCU 16KB 10MHz 1.8V | Microchip
料号： ATMEGA168V-10PI ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.6 | $1.60 |
| 10 | $1.45 | $14.50 |
| 100 | $1.35 | $135.00 |
| 500 | $1.3 | $650.00 |
| 1,000 | $1.26 | $1,260.00 |
ATMEGA168V-10PI 概述
A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals such as timers, UART, SPI, I2C, and ADC on one die. Within the hierarchy of embedded processors, 8-bit MCUs like the AVR ATmega family sit at the low-power, low-cost end, ideal for simple control and sensing tasks where 32-bit processors are unnecessary.
Key features include the advanced AVR RISC architecture with 131 powerful instructions, most executing in a single clock cycle, delivering up to 10 MIPS throughput at 10 MHz. The device integrates an 8-channel 10-bit ADC, two 8-bit timers, one 16-bit timer, USI-capable serial interfaces (SPI and I2C-compatible TWI), and debugWIRE on-chip debugging. In-system self-programming via the 16 KB FLASH supports field firmware updates.
Technically, the ATmega168 core uses a Harvard architecture with 32 general-purpose working registers directly connected to the ALU, allowing one-cycle instruction execution. Read-while-write FLASH enables EEPROM and FLASH updates without halting code execution. Power management includes idle, ADC noise reduction, power-save, power-down, standby, and extended standby sleep modes, with very low power consumption in power-down.
Typical applications include battery-operated sensor nodes, hobby and educational embedded boards, industrial control panels, home automation controllers, and low-cost instrumentation. The 28-PDIP through-hole package is especially popular for prototyping, breadboarding, and repair of legacy boards.
A key design consideration: the V (1.8-5.5 V) speed grade limits maximum clock to 10 MHz; for 20 MHz operation at 5 V, choose the standard ATmega168-20PI instead.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： ATMEGA168V-10PI ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATMEGA168V-10PI （相同外形与封装尺寸） ——差异在于 Package, Supply Voltage Range, Communication Interfaces, Instructions, Working Registers.
快速对比工具——选择替代料号进行并排对比：
ATMEGA168V-10PU
✅ 直接替换✓ 有现货
$2.01 / 个
查看数据手册 →ATMEGA168A-PU
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATMEGA168PA-PU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.86 / 个
查看数据手册 →ATMEGA88V-10PU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.3 / 个
查看数据手册 →ATMEGA328P-PU
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →ATMEGA168-20PU
✅ 直接替换✓ 有现货
$3.78 / 个
查看数据手册 →ATMEGA168V-10PI 最大额定值与电气特性
| Core Processor | AVR |
| Core Size | 8-Bit |
| 最大时钟频率 | 10 MHz |
| FLASH Program Memory | 16 KB (8K x 16) |
| SRAM | 1 KB |
| EEPROM | 512 B |
| 工作电源电压 | 1.8 V to 5.5 V |
| Number of I/O Lines | 23 |
| ADC Channels | 8 |
| ADC Resolution | 10-bit |
| 封装 | 28-PDIP (0.300 in, 7.62 mm) |
| 安装类型 | Through Hole |
| 工作温度 | -40C to +85C (I grade) |
| On-Chip Debug | debugWIRE |
| Program Memory Type | ISP FLASH (self-programming, read-while-write) |
| Instructions | 131 (mostly single-cycle) |
| Throughput | Up to 10 MIPS at 10 MHz |
| Serial Interfaces | SPI, TWI (I2C-compatible), USART |
| RoHS 状态 | Compliant (I suffix) |
ATMEGA168V-10PI 引脚配置
| 引脚 1 | PC6 (RESET) — Reset input (active low) / Port C bit 6 |
| 引脚 2 | PD0 (RXD) — USART receive / Port D bit 0 |
| 引脚 3 | PD1 (TXD) — USART transmit / Port D bit 1 |
| 引脚 4 | PD2 (INT0) — External interrupt 0 / Port D bit 2 |
| 引脚 5 | PD3 (INT1/OC2B) — External interrupt 1 / Timer2 PWM output / Port D bit 3 |
| 引脚 6 | PD4 (T0/XCK) — Timer0 clock / USART external clock / Port D bit 4 |
| 引脚 7 | VCC — Digital supply voltage (1.8 V to 5.5 V) |
| 引脚 8 | GND — Ground |
| 引脚 9 | PB6 (XTAL1/TOSC1) — Crystal oscillator pin 1 / timer oscillator / Port B bit 6 |
| 引脚 10 | PB7 (XTAL2/TOSC2) — Crystal oscillator pin 2 / timer oscillator / Port B bit 7 |
| 引脚 11 | PD5 (OC0B/T1) — Timer0 PWM output / Timer1 clock / Port D bit 5 |
| 引脚 12 | PD6 (OC0A/AIN0) — Timer0 PWM output / analog comparator positive input / Port D bit 6 |
| 引脚 13 | PD7 (AIN1) — Analog comparator negative input / Port D bit 7 |
| 引脚 14 | PB0 (ICP1/CLKO) — Timer1 input capture / clock output / Port B bit 0 |
| 引脚 15 | PB1 (OC1A) — Timer1 PWM output A / Port B bit 1 |
| 引脚 16 | PB2 (SS/OC1B) — SPI slave select / Timer1 PWM output B / Port B bit 2 |
| 引脚 17 | PB3 (MOSI/OC2A) — SPI master output / Timer2 PWM output / Port B bit 3 |
| 引脚 18 | PB4 (MISO) — SPI master input / Port B bit 4 |
| 引脚 19 | PB5 (SCK) — SPI clock / Port B bit 5 |
| 引脚 20 | AVCC — ADC supply voltage |
| 引脚 21 | AREF — ADC analog reference input |
| 引脚 22 | GND — Ground |
| 引脚 23 | PC0 (ADC0) — ADC input channel 0 / Port C bit 0 |
| 引脚 24 | PC1 (ADC1) — ADC input channel 1 / Port C bit 1 |
| 引脚 25 | PC2 (ADC2) — ADC input channel 2 / Port C bit 2 |
| 引脚 26 | PC3 (ADC3) — ADC input channel 3 / Port C bit 3 |
| 引脚 27 | PC4 (ADC4/SDA) — ADC channel 4 / TWI data line / Port C bit 4 |
| 引脚 28 | PC5 (ADC5/SCL) — ADC channel 5 / TWI clock line / Port C bit 5 |
典型应用
ATMEGA168V-10PI 适用于 6 应用s: Battery-Powered Sensor Nodes, Educational and Hobby Embedded Boards, Legacy Industrial Control Panel Repair, Home Automation Controllers, Low-Cost Instrumentation and Metering, Motor and Actuator Control.
Battery-Powered Sensor Nodes
The ATMEGA168V-10PI fits battery-powered sensor nodes because its 1.8 V to 5.5 V supply range tolerates discharging 2xAA or NiMH cells without a regulator, and the AVR power-down sleep mode reduces current to microamp levels. In a typical node, the MCU wakes on a timer or external interrupt, runs the internal 8 MHz RC oscillator, samples a sensor through the 8-channel 10-bit ADC, and transmits via SPI to a low-power radio. Operating at 1.8-3 V also keeps leakage low and avoids boost-converter losses. The trade-off is the 10 MHz speed cap, which limits duty-cycle computation but is rarely a constraint in wake-measure-transmit topologies.
推荐
Educational and Hobby Embedded Boards
The ATMEGA168V-10PI is widely used in education and hobbyist boards because the 28-PDIP through-hole package is breadboard-friendly, socketable, and easily hand-soldered. The 16 KB FLASH and 1 KB SRAM are sufficient for classic exercises such as LED multiplexing, UART serial, PWM motor control, and ADC-based analog experiments, while debugWIRE allows single-wire in-circuit debugging with only the RESET pin, lowering tooling cost. At 10 MHz the part executes up to 10 MIPS, fast enough for most classroom projects. Compared with surface-mount alternatives, the DIP footprint also simplifies board repairs and component reuse, a key reason the AVR DIP family remains a teaching standard.
推荐
Legacy Industrial Control Panel Repair
For industrial control panels designed in the 2005-2010 era, the ATMEGA168V-10PI is a direct repair part for obsolete stock, and Rochester Electronics continues authorized aftermarket supply. The wide 1.8-5.5 V operating range matches legacy 3.3 V and 5 V rail systems, and the USART, SPI, and TWI interfaces talk to displays, EEPROMs, and RS-485 transceivers used in panel retrofits. The industrial -40C to +85C temperature grade withstands cabinet environments. When the original firmware source is lost, a new ATmega168 can be cloned from a working unit via ISP or parallel high-voltage programming, restoring function without redesign.
推荐
Home Automation Controllers
In home automation nodes the ATMEGA168V-10PI handles relay switching, key-scanning, and sensor polling with its 23 GPIO lines and three timers. The TWI (I2C-compatible) interface connects RTC chips and temperature sensors, while the 10-bit ADC reads dimmer potentiometers and thermistors directly. Running from a 3.3 V rail keeps logic levels compatible with common IoT radio modules, and the 1.8 V floor allows operation directly from lithium coin cells in battery-only retrofit switches. The 16 KB FLASH accommodates a small protocol stack plus application logic. Power-save sleep between events keeps average consumption compatible with multi-year battery life targets.
推荐
Low-Cost Instrumentation and Metering
The ATMEGA168V-10PI serves low-cost instrumentation through its 8-channel 10-bit ADC with internal 1.1 V or AVCC references, differential inputs, and 1x/10x/200x gain stages, enabling direct thermistor, bridge, and current-shunt measurements without an external amplifier in many designs. The internal bandgap and AREF pin support precision ratiometric conversions. At 10 MHz the core sustains thousands of conversions per second for polling-based metering loops, while the USART streams results to a host or display. Firmware can calibrate offsets into EEPROM. For multi-channel logging at modest speed, this removes the need for a separate ADC IC, cutting BOM cost in price-sensitive meters.
推荐
Motor and Actuator Control
The ATMEGA168V-10PI drives DC and small stepper motors using its three timers: two 8-bit channels provide four PWM outputs for H-bridge control, and the 16-bit timer handles precise step sequencing and input-capture tachometer measurement. At 10 MHz, PWM resolution reaches about 10 bits at 10 kHz, adequate for fan and pump speed control. The 23 GPIO lines directly gate logic-level MOSFET drivers, and the ADC can monitor current or back-EMF for closed-loop operation. The wide 1.8-5.5 V range lets the MCU share the motor supply rail through a simple LDO. Dead-time generation and pin-change interrupts support safety interlocks in actuator applications.
推荐
推荐产品汇总
工程参考数据： ATMEGA168V-10PI ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATMEGA168V-10PU | ATMEGA168A-PU | ATMEGA328P-PU | ATMEGA88V-10PU | ATMEGA168-20PU |
|---|---|---|---|---|---|---|
| Package | 28-PDIP (0.300 in, 7.62 mm) | 28-PDIP (0.300 in) - same | 28-PDIP (0.300 in) - same | 28-PDIP (0.300 in) - same | 28-PDIP (0.300 in) - same | 28-PDIP (0.300 in) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 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 | 4.5 V to 5.5 V |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 20 MHz | 20 MHz | 10 MHz | 20 MHz |
| FLASH Memory | 16 KB | 16 KB | 16 KB | 32 KB | 8 KB | 16 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 2 KB | 1 KB | 1 KB |
| ADC Channels | 8 channels, 10-bit | 8 channels, 10-bit | 8 channels, 10-bit | 8 channels, 10-bit | 8 channels, 10-bit | 8 channels, 10-bit |
| Price (qty 1) | $1.60 | $1.60 | $1.70 | $2.30 | $1.45 | $1.55 |
关键差异点
- Genuine 1.8 V low-voltage operation （对比 ATMEGA168-20PU)
- Lower cost per KB than 328P （对比 ATMEGA328P-PU)
- DIP package enables socketed field replacement （对比 ATMEGA168V-10AUR)
设计说明
Connect AVCC (pin 20) to VCC through a low-pass LC filter (10 uH inductor and 100 nF capacitor) even if the ADC is unused - the datasheet requires AVCC to be tied to VCC for proper operation. Place a 100 nF ceramic capacitor directly across VCC (pin 7) and GND (pin 8) within 5 mm of the pins. At 5 V/10 MHz the active current is a few mA; in battery designs, use power-down sleep and wake via watchdog or external interrupt to reach microamp average consumption.
Keep the crystal (if used) within 10 mm of XTAL1/XTAL2 (pins 9-10) with short traces and load capacitors grounded at a single point close to pin 8. Route ADC traces (pins 23-26) away from PWM and crystal lines; use AREF (pin 21) with a 100 nF capacitor to ground and enable the internal reference only after it settles per datasheet timing. For breadboard prototyping, add a 100 uF bulk capacitor at the rail entry, since DIP sockets introduce inductance that causes brownout resets during relay switching.
The most common ATmega168 failure mode is leaving RESET (pin 1) floating - always pull it up with 10 k ohm and optionally a 100 nF capacitor to ground for robust ISP programming. Do not exceed 10 MHz above 2.7 V expectations; the V grade curve in the datasheet derates frequency at low voltage. When cloning legacy firmware, note that lock bits may block ISP readback - parallel high-voltage programming on pins is the only recovery. Verify fuse settings (CKSEL, SUT) after replacement, as wrong clock fuses can brick communication.
合规信息
RoHS/lead-free status indicated by the PI suffix per Microchip part numbering. Distributor listings (DigiKey, LCSC, Mouser) list the part as RoHS compliant. REACH and halogen-free status not stated in provided data.
