ATMEGA165PV-8AN - 8MHz AVR MCU 16KB Flash TQFP-64 | Microchip
料号： ATMEGA165PV-8AN ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.38 | $43.80 |
| 100 | $3.95 | $395.00 |
| 500 | $3.58 | $1,790.00 |
| 1,000 | $3.25 | $3,250.00 |
ATMEGA165PV-8AN 概述
An 8-bit AVR microcontroller is a reduced-instruction-set (RISC) single-chip processor in the broader hierarchy of embedded processors: microcontroller -> MCU -> embedded processor -> semiconductor. ATmega devices execute most of their 131 powerful instructions in a single clock cycle, achieving up to 16 MIPS throughput in the wider family, and combine flash program memory, EEPROM data memory, SRAM, timers, USARTs, an ADC, and general-purpose I/O on one die.
Key features include the advanced AVR RISC architecture with 32 general-purpose working registers, fully static operation, in-system programmable (ISP) flash with high-endurance non-volatile memory segments, a 10-bit ADC, multiple timers with PWM, and dual USARTs for serial communication. The -8A speed grade specifies 8 MHz maximum clock, and the -V supply option supports a wide 1.8V to 5.5V operating range, allowing battery- and 5V-industrial-compatible designs on the same PCB.
The picoPower-class V variant minimizes active and sleep current, while the industrial temperature grade supports operation in demanding environments. The TQFP-64 gull-wing surface-mount package provides 54 general-purpose I/O lines, simplifying designs with many switches, displays, and peripheral interfaces such as SPI, I2C/TWI, and UART links.
Typical applications include industrial control panels, building automation and HVAC controllers, metering equipment, sensor nodes, and legacy Atmel AVR designs undergoing production restarts where drop-in ATmega165 family continuity matters.
Design consideration: at 8 MHz on a 5V rail, keep decoupling capacitors close to the multiple VCC/GND pin pairs (three on TQFP-64) and route the analog supply through AVCC with an RC filter for best ADC accuracy.
This page synthesizes distributor availability, drop-in alternatives, and practical design guidance not found in a single manufacturer datasheet. Pricing references are estimates as of 2026-09-16.
直接替换替代料： ATMEGA165PV-8AN ——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： ATMEGA165PV-8AN （相同外形与封装尺寸） ——差异在于 Package, Timers, Flash Memory, RoHS Status, Communication Interfaces.
快速对比工具——选择替代料号进行并排对比：
ATMEGA165PA-AU
✅ 直接替换✓ 有现货
$2.05 / 个
查看数据手册 →ATMEGA165A-AU
✅ 直接替换✓ 有现货
$3.47 / 个
查看数据手册 →ATMEGA165PV-8AU
✅ 直接替换✓ 有现货
$2.49 / 个
查看数据手册 →ATMEGA165P-16ANR
✅ 直接替换✓ 有现货
$2.18 / 个
查看数据手册 →ATMEGA165PA-AN
✅ 直接替换✓ 有现货
$2.19 / 个
查看数据手册 →ATMEGA165PV-8AN 最大额定值与电气特性
| Core Architecture | AVR 8-bit RISC |
| Core Size | 8-bit |
| 最大时钟频率 | 8 MHz |
| Flash Memory | 16 KB (8K x 16) in-system programmable |
| EEPROM | 512 B |
| SRAM | 1 KB |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Instruction Set | 131 instructions, most single-cycle |
| Number of I/Os | 54 |
| 封装 | 64-TQFP (14x14 mm), gull wing, square |
| 安装类型 | Surface Mount |
| Temperature Grade | Industrial |
| Adc | 10-bit ADC present |
| Communication Interfaces | USART, SPI, TWI (I2C) |
| Timers | On-chip timers with PWM |
| RoHS 状态 | Compliant (Green package) |
| Program Memory Type | FLASH, high-endurance non-volatile |
ATMEGA165PV-8AN 引脚配置
| 引脚 1 | PE0 (RXD0/PDI) — Port E bit 0 / USART0 receive |
| 引脚 2 | PE1 (TXD0/PDO) — Port E bit 1 / USART0 transmit |
| 引脚 3 | PE2 (XCK0/AIN0) — Port E bit 2 / USART0 clock / analog comparator input 0 |
| 引脚 4 | PE3 (OC3A/AIN1) — Port E bit 3 / Timer3 output compare A / comparator input 1 |
| 引脚 5 | PE4 (OC3B/INT4) — Port E bit 4 / Timer3 output compare B / external interrupt 4 |
| 引脚 6 | PE5 (OC3C/INT5) — Port E bit 5 / Timer3 output compare C / external interrupt 5 |
| 引脚 7 | PE6 (T3/INT6) — Port E bit 6 / Timer3 clock input / external interrupt 6 |
| 引脚 8 | PE7 (ICP3/CLK0/INT7) — Port E bit 7 / Timer3 input capture / interrupt 7 |
| 引脚 9 | GND — Digital ground |
| 引脚 10 | VCC — Digital supply voltage |
| 引脚 11 | PG0 (WR) — Port G bit 0 / external memory write strobe |
| 引脚 12 | PG1 (RD) — Port G bit 1 / external memory read strobe |
| 引脚 13 | PC0 (A8) — Port C bit 0 / external memory address line |
| 引脚 14 | PC1 (A9) — Port C bit 1 / external memory address line |
| 引脚 15 | PC2 (A10) — Port C bit 2 / external memory address line |
| 引脚 16 | PC3 (A11) — Port C bit 3 / external memory address line |
| 引脚 17 | PC4 (A12) — Port C bit 4 / external memory address line |
| 引脚 18 | PC5 (A13) — Port C bit 5 / external memory address line |
| 引脚 19 | PC6 (A14) — Port C bit 6 / external memory address line |
| 引脚 20 | PC7 (A15) — Port C bit 7 / external memory address line |
| 引脚 21 | GND — Digital ground |
| 引脚 22 | VCC — Digital supply voltage |
| 引脚 23 | PD0 (SCL/INT0) — Port D bit 0 / TWI clock / external interrupt 0 |
| 引脚 24 | PD1 (SDA/INT1) — Port D bit 1 / TWI data / external interrupt 1 |
| 引脚 25 | PD2 (RXD1/INT2) — Port D bit 2 / USART1 receive / external interrupt 2 |
| 引脚 26 | PD3 (TXD1/INT3) — Port D bit 3 / USART1 transmit / external interrupt 3 |
| 引脚 27 | PD4 (ICP1) — Port D bit 4 / Timer1 input capture |
| 引脚 28 | PD5 (XCK1) — Port D bit 5 / USART1 external clock |
| 引脚 29 | PD6 (T1) — Port D bit 6 / Timer1 external clock input |
| 引脚 30 | PD7 (T2) — Port D bit 7 / Timer2 external clock input |
| 引脚 31 | PG2 (ALE) — Port G bit 2 / external memory address latch enable |
| 引脚 32 | GND — Digital ground |
| 引脚 33 | VCC — Digital supply voltage |
| 引脚 34 | PA0 (AD0) — Port A bit 0 / ADC channel 0 / external memory data bus |
| 引脚 35 | PA1 (AD1) — Port A bit 1 / ADC channel 1 / external memory data bus |
| 引脚 36 | PA2 (AD2) — Port A bit 2 / ADC channel 2 / external memory data bus |
| 引脚 37 | PA3 (AD3) — Port A bit 3 / ADC channel 3 / external memory data bus |
| 引脚 38 | PA4 (AD4) — Port A bit 4 / ADC channel 4 / external memory data bus |
| 引脚 39 | PA5 (AD5) — Port A bit 5 / ADC channel 5 / external memory data bus |
| 引脚 40 | PA6 (AD6) — Port A bit 6 / ADC channel 6 / external memory data bus |
| 引脚 41 | PA7 (AD7) — Port A bit 7 / ADC channel 7 / external memory data bus |
| 引脚 42 | AVCC — Analog supply voltage for ADC and Port F |
| 引脚 43 | PF0 (ADC0) — Port F bit 0 / ADC channel 0 |
| 引脚 44 | PF1 (ADC1) — Port F bit 1 / ADC channel 1 |
| 引脚 45 | PF2 (ADC2) — Port F bit 2 / ADC channel 2 |
| 引脚 46 | PF3 (ADC3) — Port F bit 3 / ADC channel 3 |
| 引脚 47 | PF4 (ADC4/TCK) — Port F bit 4 / ADC channel 4 / JTAG test clock |
| 引脚 48 | PF5 (ADC5/TMS) — Port F bit 5 / ADC channel 5 / JTAG test mode select |
| 引脚 49 | PF6 (ADC6/TDO) — Port F bit 6 / ADC channel 6 / JTAG test data out |
| 引脚 50 | PF7 (ADC7/TDI) — Port F bit 7 / ADC channel 7 / JTAG test data in |
| 引脚 51 | AREF — Analog reference voltage for ADC |
| 引脚 52 | GND — Analog ground |
| 引脚 53 | AVCC — Analog supply voltage |
| 引脚 54 | PB0 (SS) — Port B bit 0 / SPI slave select |
| 引脚 55 | PB1 (SCK) — Port B bit 1 / SPI serial clock |
| 引脚 56 | PB2 (MOSI) — Port B bit 2 / SPI master data out |
| 引脚 57 | PB3 (MISO) — Port B bit 3 / SPI master data in |
| 引脚 58 | PB4 (OC2A/PCINT4) — Port B bit 4 / Timer2 output compare A / pin change interrupt |
| 引脚 59 | PB5 (OC1A/PCINT5) — Port B bit 5 / Timer1 output compare A / pin change interrupt |
| 引脚 60 | PB6 (OC1B/PCINT6) — Port B bit 6 / Timer1 output compare B / pin change interrupt |
| 引脚 61 | PB7 (OC0A/OC1C/PCINT7) — Port B bit 7 / Timer0 output compare A / Timer1 output compare C / pin change interrupt |
| 引脚 62 | PG3 (TOSC2) — Port G bit 3 / Timer oscillator output (32 kHz RTC crystal) |
| 引脚 63 | PG4 (TOSC1) — Port G bit 4 / Timer oscillator input (32 kHz RTC crystal) |
| 引脚 64 | XTAL1/XTAL2 — Main oscillator pins - verify exact XTAL1/XTAL2 split against datasheet |
典型应用
ATMEGA165PV-8AN 适用于 6 应用s: Industrial Control Panels, Building Automation and HVAC Controllers, Metering and Measurement Equipment, Sensor Nodes and Data Loggers, Legacy Atmel Design Production Restarts, Automotive and Marine Instrument Clusters.
Industrial Control Panels
The ATMEGA165PV-8AN fits industrial control panels because its 54 GPIO lines drive relays, contactors, indicator lamps, and keypad matrices directly, while the 10-bit ADC reads potentiometer-setpoints and sensor channels without an external converter. The dual USARTs allow simultaneous connection of an HMI display and a Modbus RTU link on one chip, and the industrial temperature grade covers cabinet environments. Operating at 8 MHz from a 5V industrial rail provides deterministic single-cycle instruction execution for time-critical interlock logic, and the 16 KB flash holds ladder-style control code with room for bootloader updates via the ISP interface.
推荐
Building Automation and HVAC Controllers
In building automation and HVAC controllers, the ATMEGA165PV-8AN combines a wide 1.8V-5.5V supply range, TWI (I2C) for temperature and humidity sensors, and timer PWM outputs for damper and valve actuation on a single 64-pin TQFP device. The picoPower-class V variant keeps standby current low so a controller can run from a backup battery during outages, while the 1 KB SRAM handles protocol buffers for networked communication. The 16 KB in-system-programmable flash supports field firmware updates over the serial link, an important serviceability feature for rooftop units, air handlers, and zone controllers deployed for long service lifetimes.
推荐
Metering and Measurement Equipment
The ATMEGA165PV-8AN suits utility metering and measurement equipment because its 10-bit ADC with AVCC filtering digitizes current-transformer and voltage-divider channels, while timers capture pulse outputs from energy meters. The 8 MHz clock is slow enough for low EMI in dense meter PCBs yet sufficient for RMS computation of 50/60 Hz waveforms. EEPROM retains calibration constants and consumption logs through power loss, and the TQFP-64's many I/O lines interface to LCD segments, optical comm ports, and tamper switches. The wide supply range tolerates the sagging supplies typical of meter power circuits derived from the mains.
推荐
Sensor Nodes and Data Loggers
For battery-powered sensor nodes and data loggers, the ATMEGA165PV-8AN's V-suffix supply range (1.8V-5.5V) allows direct operation from two alkaline cells or a single lithium cell through the full discharge curve. The picoPower-class design sleeps in power-down mode between samples, waking on timer or external interrupt to convert a sensor with the 10-bit ADC and log results to EEPROM or external flash over SPI. At 8 MHz active processing is brief, so average current is dominated by sleep current - the key figure of merit for multi-year battery life in agricultural monitoring, cold-chain logging, and environmental telemetry deployments.
推荐
Legacy Atmel Design Production Restarts
Many legacy products designed around the Atmel ATmega165 in the early 2000s require production restarts today. The ATMEGA165PV-8AN is the currently supported Microchip Technology part number for that design: identical die-level function, TQFP-64 footprint, and AVR instruction set, so existing firmware compiled in avr-gcc or IAR rebuilds without porting. BOM managers can also qualify the ATMEGA165PA-AU as a second source on the same land pattern, following Microchip's official alternate-part guidance for ATmega MCUs to mitigate the periodic allocation this legacy family experiences.
推荐
Automotive and Marine Instrument Clusters
Instrument clusters and dash gauges use the ATMEGA165PV-8AN where its many I/O lines drive stepper-gauge motors and warning lamps, the ADC samples fuel and temperature senders, and USARTs link to the vehicle body controller. The industrial-grade temperature spec and fully static core (operation can be clocked down or stopped safely) fit the harsh electrical environment after load-dump protection circuitry. The 8 MHz rating keeps radiated emissions within limits for EMC-sensitive cabin electronics, and the JTAG interface supports in-circuit firmware updates during vehicle service without removing the cluster from the dashboard.
推荐
推荐产品汇总
工程参考数据： ATMEGA165PV-8AN ——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 | ATMEGA165PA-AU | ATMEGA165A-AU | ATMEGA165PV-8AU | ATMEGA165P-16AN |
|---|---|---|---|---|---|
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP (14x14 mm) - same | 64-TQFP - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology (Atmel) |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Power Feature | picoPower-class V variant | picoPower A-generation | Standard grade | picoPower V variant | Standard P grade |
| Temperature Grade | Industrial | Industrial | Industrial | Industrial | Industrial |
关键差异点
- Wide 1.8V-5.5V supply range on one design （对比 ATMEGA165P-16AN)
- More I/O than the ATmega164 subfamily （对比 ATMEGA164PV-10PU)
- picoPower-class consumption with full family compatibility （对比 ATMEGA165PA-AU)
设计说明
The TQFP-64 ATMEGA165PV-8AN has multiple VCC/GND pin pairs (pins 9/10, 21/22, 32/33); place a 100 nF ceramic capacitor within 2-3 mm of each pair plus one 4.7-10 uF bulk capacitor at the supply entry. Follow the Microchip AVR hardware design considerations application note for the decoupling topology. Poor decoupling on this family shows up as ADC noise and sporadic flash corruption during programming, so treat the decoupling network as a critical, not optional, part of the layout.
Connect AVCC (pins 42/53) to the digital rail through a small RC filter (e.g., 10 ohm series resistor plus 100 nF to ground) and tie AREF to its recommended decoupling when using the internal reference. Never leave AVCC unconnected even if the ADC is unused - the Port F I/O and JTAG cells depend on it. Estimated: keeping analog ripple below 1 LSB of a 10-bit ADC on a 5 V rail means keeping AVCC noise under about 4.9 mV.
Verify the speed grade before substitution: the -8A suffix limits the clock to 8 MHz, while the ATMEGA165P-16AN allows 16 MHz - fitting a 16 MHz crystal to this part will cause out-of-spec operation and unreliable USART timing. Also note the JTAG pins are shared with ADC4-ADC7 on Port F: if your design uses those ADC channels, disable JTAG via the fuse bits after programming, otherwise the pins are held in JTAG mode at reset.
合规信息
Mouser and DigiKey list the part as 'GRN' (green/halogen-free, RoHS-compliant) package. AEC-Q100 qualification is not indicated in the provided data for this industrial-grade part.
