ATMEGA3290PV-10AUR - 8-bit AVR MCU, 32KB, LCD, TQFP-100 | Microchip
料号： ATMEGA3290PV-10AUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.21 | $62.10 |
| 100 | $5.52 | $552.00 |
| 500 | $4.94 | $2,470.00 |
| 1,000 | $4.41 | $4,410.00 |
ATMEGA3290PV-10AUR 概述
A microcontroller unit (MCU) is a single-chip computer that combines a processor core, program memory, data memory, and peripherals on one die. This device belongs to the AVR ATmega family of 8-bit RISC microcontrollers, positioned in the broader hierarchy of embedded processors used in industrial control, metering, and human-interface products. The AVR architecture executes most of its powerful instruction set in a single clock cycle, delivering up to 10 MIPS throughput at 10 MHz.
Key features include in-system self-programmable Flash with read-while-write capability, picoPower low-power technology for battery-operated designs, an integrated LCD driver that offloads segment driving from software, 69 general-purpose I/O lines, and 32 general-purpose working registers directly connected to the ALU. The wide 1.8V to 5.5V operating range allows direct battery connection without a regulator in low-power systems.
Technically, the device uses an advanced RISC core with single-cycle instruction execution, hardware multiplier, and nested interrupt controller. The 32KB Flash is organized for 10,000 write cycles, while the 1KB EEPROM provides non-volatile parameter storage. Peripherals typically include USART, SPI, and JTAG-based debugging on the ATmega3290 family, supporting both development and production programming.
Typical applications include utility metering with LCD readouts, battery-powered industrial instruments, building automation panels, and handheld measurement devices where the integrated segment LCD controller, low active current, and five-volt tolerance simplify the bill of materials.
When designing with this device, respect the 10 MHz maximum frequency of the V-grade speed bin and use decoupling capacitors on each supply pin; the LCD controller requires proper bias network configuration per the manufacturer datasheet.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
直接替换替代料： ATMEGA3290PV-10AUR ——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： ATMEGA3290PV-10AUR （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Instruction Set, Instructions, LCD Controller.
快速对比工具——选择替代料号进行并排对比：
ATMEGA3290PA-AU
✅ 直接替换✓ 有现货
$4.48 / 个
查看数据手册 →ATMEGA3290P-10AU
✅ 直接替换📋 参考替代料（不在目录中）
ATMEGA3250P-20AU
✅ 直接替换✓ 有现货
$1.8 / 个
查看数据手册 →ATMEGA3250V-8AUR
✅ 直接替换✓ 有现货
$3.38 / 个
查看数据手册 →ATMEGA3250-16AU
✅ 直接替换✓ 有现货
$5.74 / 个
查看数据手册 →ATMEGA6490P-AU
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATMEGA3290PV-10AUR 最大额定值与电气特性
| Core Architecture | 8-bit AVR RISC |
| Flash Program Memory | 32KB (16K x 16) |
| EEPROM | 1KB |
| SRAM | 2KB |
| 最大时钟频率 | 10 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| General Purpose I/O Lines | 69 |
| LCD Controller | Integrated segment LCD driver |
| 封装 | 100-TQFP (14x14 mm) |
| 安装类型 | Surface Mount |
| Programming | ISP self-programmable Flash, read-while-write |
| Working Registers | 32 general purpose |
| Instructions | 131 powerful instructions, most single-cycle |
| Low Power Technology | picoPower |
| Life Cycle Stage | Active |
ATMEGA3290PV-10AUR 100-tqfp (14x14 mm) 引脚配置指南
ATMEGA3290PV-10AUR（100-tqfp (14x14 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATMEGA3290PV-10AUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATMEGA3290PV-10AUR 适用于 6 应用s: Utility Metering with LCD Display, Battery-Powered Industrial Instruments, Building Automation Control Panels, Handheld Measurement Devices, Security and Access Control Keypads, Consumer Appliance User Interfaces.
Utility Metering with LCD Display
Electricity, water, and gas meters demand a controller that drives a multi-segment LCD for decades on limited power budgets. The ATMEGA3290PV-10AUR fits this role because its integrated segment LCD controller removes the need for a separate display driver IC, while picoPower technology keeps active current low at modest 1-10 MHz clocks and permits 1.8V operation directly from battery-backed supplies. In a typical meter, the MCU scans pulse inputs or an energy-measurement front end, updates LCD segments, and stores billing data in the 1KB EEPROM. Because the Flash supports self-programming with read-while-write, firmware field updates are possible without losing measurement continuity. The trade-off versus a plain MCU plus discrete LCD driver is one less component and lower BOM cost, at the price of fixing the LCD layout to the ATmega3290 family.
推荐
Battery-Powered Industrial Instruments
Handheld and portable industrial instruments combine buttons, indicators, and long sleep periods. The ATMEGA3290PV-10AUR suits these products with its 69 GPIO lines for key matrices and peripheral control, an on-chip LCD driver for the operator display, and picoPower sleep modes that stretch battery life between charges. Operating from 1.8V to 5.5V means the design can run from a single-cell lithium battery with minimal regulation, and the 10 MHz speed grade is sufficient for measurement math and communication tasks. The 2KB SRAM handles data buffering for averaging or logging, while the 1KB EEPROM stores calibration constants across power cycles. Compared with a general-purpose MCU plus LCD driver, this part reduces board area in the display module; engineers should validate sleep-mode current against the datasheet at their exact supply voltage.
推荐
Building Automation Control Panels
Wall-mounted control panels for HVAC and lighting need many I/O, a readable display, and robust in-field firmware updates. The ATMEGA3290PV-10AUR addresses all three: 69 GPIO lines drive relays, keypads, and LEDs, the integrated LCD controller renders zone temperatures and setpoints without an external driver, and the self-programmable 32KB Flash with read-while-write supports bootloader-based updates over a USART or SPI link. The 5.5V upper supply limit allows direct connection to legacy 5V panel rails, reducing level-shifting circuitry. Its single-cycle RISC core provides responsive user-interface timing at 10 MHz. Designers should budget the 2KB SRAM carefully when stacking protocol stacks with display buffers, and consider the ATMEGA6490P-AU drop-in upgrade if firmware complexity grows beyond 32KB.
推荐
Handheld Measurement Devices
Portable multimeters,Environmental meters, and testers benefit from the ATMEGA3290PV-10AUR's combination of LCD display driving, low-voltage battery operation, and adequate processing throughput. The device's 10 MHz AVR core executes averaging, linearization, and unit-conversion math with single-cycle instructions, while the 1KB EEPROM holds zero and span calibration data written during factory calibration. The 1.8V minimum supply supports two-cell alkaline designs, and picoPower sleep modes keep standby drain negligible between measurements. The 100-pin TQFP exposes enough I/O to multiplex rotary encoders, buzzer, backlight, and a serial link to a PC. Compared with a segment-driver-plus-MCU solution, the integrated LCD controller shortens the analog layout and improves battery-life predictability since the display bias circuitry follows Microchip's reference design.
推荐
Security and Access Control Keypads
Access-control terminals require a keypad matrix, status display, buzzer, and a serial or Wiegand-style link to the controller. The ATMEGA3290PV-10AUR provides the I/O depth for a large key matrix plus door-control outputs, an LCD driver for user prompts, and 32KB of self-programmable Flash for credential-handling firmware. Operating at 5V simplifies interfacing with legacy 5V readers and relays common in installed security infrastructure. The device's read-while-write Flash enables logging events to program memory or updating credentials without interrupting the scanning loop. Designers should use the hardware USART for the upstream link and keep interrupt latency low so key debouncing remains deterministic. The TQFP-100 footprint also allows one PCB to serve multiple product tiers by populating lower-memory family members where cost matters.
推荐
Consumer Appliance User Interfaces
Washing machines, cooktops, and climate-control appliances use segment LCDs and many buttons or loads - exactly the profile of the ATMEGA3290PV-10AUR. Its integrated LCD controller, 69 GPIO lines, and 5.5V tolerance allow direct drive of triac-driver circuits and relay coils through transistor buffers, while the AVR core manages the state machine and safety interlocks at low cost. The 1KB EEPROM stores user preferences and cycle counters that must survive power loss. Because the Flash is in-system self-programmable, manufacturers can refresh firmware on the production line via ISP without socketed parts. The picoPower V-grade also supports standby modes that meet low standby-power expectations in modern appliances. Layout care is needed to keep the LCD bias traces away from switching loads to avoid segment ghosting.
推荐
推荐产品汇总
工程参考数据： ATMEGA3290PV-10AUR ——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 | ATMEGA3290PA-AU | ATMEGA3290P-10AU | ATMEGA3250V-8AUR | ATMEGA6490P-AU |
|---|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32KB | 32KB | 32KB | 32KB | 64KB |
| Maximum Clock Frequency | 10 MHz | Up to 20 MHz (voltage dependent) | 10 MHz | 8 MHz | 16 MHz |
| LCD Controller | Yes (integrated segment driver) | Yes | Yes | Yes | Yes |
| SRAM | 2KB | 2KB | 2KB | 2KB | 4KB |
关键差异点
- Integrated segment LCD driver removes external display IC （对比 ATMEGA328P-MU)
- picoPower V-grade operation down to 1.8V （对比 ATMEGA3250-16AU)
- Cost-optimized 10 MHz speed bin （对比 ATMEGA3250P-20AU)
设计说明
Decouple every VCC/AVCC pin pair with 100 nF ceramic capacitors placed within a few millimeters of the pins, plus one bulk 4.7-10 uF capacitor near the supply entry. In AVR devices, AVCC must stay within 0.3 V of VCC; if an ADC is used, connect AVCC to VCC through a low-pass LC filter to reduce digital noise on analog measurements. At 1.8V operation, margin the clock frequency conservatively, since the validated maximum frequency of AVR parts decreases as supply voltage falls - check the datasheet frequency-versus-voltage curve before fixing the crystal value.
Route LCD segment and common lines as short, parallel groups and keep them away from switching loads (relay coils, triac drivers) to prevent capacitive coupling that appears as ghost segments. Place the LCD bias resistor network close to the device and follow the datasheet-recommended bias configuration for your duty cycle (static, 1/2, 1/3, or 1/4). For the TQFP-100 footprint, connect all exposed ground and unused LCD options per the datasheet; do not float the LCD bias pins, as floating bias nodes are the most common cause of display flicker reported on this family.
Program the fuses with care: disabling SPI or JTAG programming access on the ATmega3290 family before verifying firmware can render a batch of devices unprogrammable on the board. The V-grade device is rated for 10 MHz maximum - do not substitute a 16 MHz crystal from P-grade designs. When using EEPROM, add wear-leveling for frequently written counters, since EEPROM endurance is cycle-limited, and allow the datasheet-specified EEPROM write time before power-down to avoid corrupt data.
合规信息
Listed by Jotrin as GREEN, T&R packaging. Full REACH and material-declaration status should be confirmed via Microchip's official product page compliance documents.
