ATMEGA324PV-10AU - 8-bit AVR MCU, 32KB Flash, 10MHz, 44-TQFP | Microchip
Référence : ATMEGA324PV-10AU ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.73 | $6,73 |
| 10 | $6.05 | $60,50 |
| 100 | $5.38 | $538,00 |
| 500 | $4.84 | $2 420,00 |
| 1 000 | $4.3 | $4 300,00 |
ATMEGA324PV-10AU Présentation
An 8-bit AVR microcontroller (MCU) is a single-chip computer built on a modified Harvard RISC architecture developed by Atmel (now Microchip). It combines a CPU core, non-volatile Flash program memory, SRAM data memory, EEPROM, and a rich set of peripherals including timers, ADC, USART, SPI, I2C/TWI, and GPIO on one die. The AVR family is widely used in hobbyist (Arduino), industrial control, sensor interface, and low-power embedded applications because of its deterministic instruction timing, simple C-friendly toolchain (AVR-GCC), and on-chip debug support.
The ATmega324PV specifically targets the picoPower family, with advanced power-saving features including six sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby), a real-time counter running from an internal oscillator, and the ability to wake on external interrupts. Peripherals of engineering note include two USARTs, a byte-oriented TWI (I2C) interface, a master/slave SPI, an 8-channel 10-bit ADC with optional differential channels, three flexible timer/counters with compare and PWM modes, a programmable watchdog timer with separate on-chip oscillator, and an on-chip analog comparator.
Architecture-wise, the ATmega324PV uses a two-stage pipelined RISC core with 131 powerful instructions, hardware multiplier, and JTAG/OCD debug interface. The 10 MHz speed grade is the lower-power variant in the family, with the 20 MHz ATmega324P-20AU offering higher throughput at the cost of higher current consumption. The 'V' suffix denotes the picoPower process with extended voltage range down to 1.8V, ideal for battery-powered designs.
Typical applications include industrial sensor nodes, smart metering, battery-powered data loggers, home automation controllers, USB-to-UART bridges, and Arduino-compatible custom boards. For designs requiring higher computational headroom, the ATmega324P-20AU (20 MHz) or ATmega644P (64KB Flash) are drop-in compatible variants. For designs requiring an enhanced peripheral set, the ATmega324PB adds more USART, SPI and PWM channels in the same TQFP-44 footprint.
Alternatives de remplacement direct pour ATMEGA324PV-10AU — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATMEGA324PV-10AU (même facteur de forme et même empreinte) — différant par ADC, Program Memory (Flash), Package, EEPROM, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATMEGA324P-20AU
✅ Remplacement direct✓ En stock
$6.24 / unité
Voir la fiche technique →ATMEGA324PA-AU
✅ Remplacement direct✓ En stock
$2.87 / unité
Voir la fiche technique →ATMEGA324PV-10AN
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATMEGA644PV-10AUR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATMEGA164A-AU
✅ Remplacement direct✓ En stock
$2.65 / unité
Voir la fiche technique →ATMEGA324PB-AU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATMEGA324PV-10AU Valeurs maximales et caractéristiques électriques
| Core Architecture | AVR 8-bit RISC |
| Program Memory (Flash) | 32 KB (16K x 16) |
| EEPROM | 1 KB |
| SRAM | 2 KB |
| Maximum CPU Frequency | 10 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| General-Purpose I/O | 32 |
| General-Purpose Registers | 32 |
| Instruction Set | 131 instructions, most single-cycle |
| Performance | Up to 10 MIPS at 10 MHz |
| USART | 2 |
| SPI | 1 (master/slave) |
| TWI (I2C) | 1 byte-oriented |
| ADC | 8-channel, 10-bit |
| Timer/Counters | 3 (with PWM and compare modes) |
| Watchdog Timer | Yes, programmable with separate oscillator |
| Analog Comparator | Yes, on-chip |
| RTC | Yes, real-time counter |
| Debug Interface | JTAG / OCD (debugWIRE) |
| Boîtier | 44-pin TQFP (10x10 mm), 0.80 mm pitch |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +85C (industrial) |
| Process Family | picoPower |
| Statut RoHS | Compliant |
Configuration des broches de ATMEGA324PV-10AU
| Broche 1 | PB5 (MOSI) — Port B5 / SPI MOSI / OC1A |
| Broche 2 | PB6 (MISO) — Port B6 / SPI MISO / OC1B |
| Broche 3 | PB7 (SCK) — Port B7 / SPI SCK / OC1C |
| Broche 4 | RESET — Reset input (active low) |
| Broche 5 | VCC — Digital supply voltage (1.8V-5.5V) |
| Broche 6 | GND — Ground |
| Broche 7 | VCC — Digital supply voltage |
| Broche 8 | GND — Ground |
| Broche 9 | XTAL2 — Crystal oscillator output |
| Broche 10 | XTAL1 — Crystal oscillator input |
| Broche 11 | PD0 (RXD0) — Port D0 / USART0 RXD |
| Broche 12 | PD1 (TXD0) — Port D1 / USART0 TXD |
| Broche 13 | PD2 (INT0) — Port D2 / External Interrupt 0 |
| Broche 14 | PD3 (INT1) — Port D3 / External Interrupt 1 |
| Broche 15 | PD4 (OC1B) — Port D4 / Timer1 Compare B |
| Broche 16 | PD5 (OC1A) — Port D5 / Timer1 Compare A |
| Broche 17 | PD6 (ICP1) — Port D6 / Timer1 Input Capture |
| Broche 18 | PD7 (OC2) — Port D7 / Timer2 Compare |
| Broche 19 | PC0 (SCL) — Port C0 / TWI SCL / ADC0 |
| Broche 20 | PC1 (SDA) — Port C1 / TWI SDA / ADC1 |
| Broche 21 | PC2 (TCK) — Port C2 / JTAG TCK / ADC2 |
| Broche 22 | PC3 (TMS) — Port C3 / JTAG TMS / ADC3 |
| Broche 23 | PC4 (TDO) — Port C4 / JTAG TDO / ADC4 |
| Broche 24 | PC5 (TDI) — Port C5 / JTAG TDI / ADC5 |
| Broche 25 | PC6 (TOSC1) — Port C6 / Timer0 Oscillator / RESET |
| Broche 26 | PC7 (TOSC2) — Port C7 / Timer0 Oscillator |
| Broche 27 | AVCC — Analog supply voltage |
| Broche 28 | AGND — Analog ground |
| Broche 29 | AREF — ADC reference voltage |
| Broche 30 | ADC6 — ADC input 6 (differential) |
| Broche 31 | ADC7 — ADC input 7 (differential) |
| Broche 32 | PA7 (ADC7) — Port A7 / ADC7 |
| Broche 33 | PA6 (ADC6) — Port A6 / ADC6 |
| Broche 34 | PA5 (ADC5) — Port A5 / ADC5 |
| Broche 35 | PA4 (ADC4) — Port A4 / ADC4 |
| Broche 36 | PA3 (ADC3) — Port A3 / ADC3 |
| Broche 37 | PA2 (ADC2) — Port A2 / ADC2 |
| Broche 38 | PA1 (ADC1) — Port A1 / ADC1 |
| Broche 39 | PA0 (ADC0) — Port A0 / ADC0 |
| Broche 40 | VCC — Digital supply voltage |
| Broche 41 | GND — Ground |
| Broche 42 | PB0 (XCK0) — Port B0 / USART0 XCK |
| Broche 43 | PB1 (T1) — Port B1 / Timer1 External Clock |
| Broche 44 | PB2 (AIN0) — Port B2 / Analog Comparator + |
Applications typiques
ATMEGA324PV-10AU convient pour 6 applications: Industrial Sensor Node, Battery-Powered Data Logger, Home Automation Controller, USB-to-UART Bridge, Smart Meter Endpoint, Arduino-Compatible Custom Board.
Industrial Sensor Node
The ATMEGA324PV-10AU's 32KB Flash, 2KB SRAM, and 8-channel 10-bit ADC suit multi-signal industrial monitoring where several analog sensors (temperature, pressure, 4-20 mA loops) must be sampled and conditioned. The picoPower sleep currents under 1 uA in power-down mode and 1.8V minimum supply let the MCU run for years from a primary cell while still waking on external interrupts to log sensor events. The 32 GPIO and two USARTs allow direct connection to RS-485 transceivers for Modbus RTU slaves. Per the Microchip datasheet, the on-chip analog comparator and watchdog timer with dedicated oscillator provide robust fail-safe behavior in unattended installations.
Recommandé
Battery-Powered Data Logger
The ATMEGA324PV-10AU's picoPower process delivers typical active current around 4 mA at 3.3V/10 MHz and power-down current under 1 uA, enabling multi-year battery life in periodic-logging applications. The 32KB Flash stores firmware plus a small FAT filesystem, 1KB EEPROM holds configuration and calibration constants with 100k write endurance, and 2KB SRAM buffers sensor bursts between sleeps. The real-time counter running from an internal 32.768 kHz oscillator maintains wall-clock time without external crystals. With a single CR2032 cell, an hourly wake-and-log duty cycle can yield 5+ years of service life.
Recommandé
Home Automation Controller
Home automation hubs benefit from the ATMEGA324PV-10AU's dual USART, TWI (I2C), and SPI buses to bridge multiple radios (Zigbee, LoRa, BLE) with a Wi-Fi host MCU. The 32 GPIO drive low-voltage relay boards, keypad matrices, and indicator LEDs directly without external logic. With Arduino MightyCore firmware support, the same development environment used for prototyping scales directly to production. The 10 MHz speed grade keeps active power modest for always-on controllers that must stay responsive yet minimize standby energy consumption.
Recommandé
USB-to-UART Bridge
The ATMEGA324PV-10AU implements a USB CDC bridge by running V-USB on the AVR core, leveraging two hardware USARTs to expose dual serial ports over a single USB cable. At 10 MHz the firmware sustains 115200 bps full-duplex on both channels with low CPU loading. The wide 1.8V to 5.5V supply range simplifies integration with 1.8V host devices and 5V legacy peripherals. Internal pull-ups on TWI pins and the on-chip analog comparator support DTR/RTS handshaking without external components.
Recommandé
Smart Meter Endpoint
Utility smart-meter endpoints require low quiescent current, tamper-resistant secure storage, and reliable long-life operation - all delivered by the ATMEGA324PV-10AU's picoPower architecture. The 1KB EEPROM stores meter calibration and tamper counters with 100k write endurance, while the 32KB Flash holds metering firmware and protocol stacks such as DLMS/COSEM or Wireless M-Bus. The on-chip RTC with separate oscillator provides billing-grade timekeeping, and the watchdog timer guards against firmware hangs in unattended deployments.
Recommandé
Arduino-Compatible Custom Board
The ATMEGA324PV-10AU is supported by the MightyCore Arduino board package, delivering 32KB Flash, 2KB SRAM, and 32 GPIO - substantially more than the classic ATmega328P. Designers can reuse existing Arduino libraries for I2C, SPI, and UART peripherals while gaining extra timers and PWM channels for motor or lighting control. The 10 MHz speed grade reduces power consumption versus the 16/20 MHz ATmega328P variants used in Arduino Uno, beneficial for battery-powered clones and field-installable sensor nodes.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATMEGA324PV-10AU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATMEGA324P-20AU | ATMEGA324PA-AU | ATMEGA324PV-10AN | ATMEGA644PV-10AUR | ATMEGA164A-AU | ATMEGA324PB-AU |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same |
| Max CPU Frequency | 10 MHz | 20 MHz | 20 MHz | 10 MHz | 10 MHz | 20 MHz | 20 MHz |
| Flash | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB | 16 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB | 1 KB | 2 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB | 512 B | 1 KB |
| Supply Voltage | 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 | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| picoPower | Yes | No | Yes | Yes | Yes | Yes | Yes |
| GPIO | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +105C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
Principaux différenciateurs
- True 1.8V minimum supply operation across full temperature range (vs ATMEGA324P-20AU)
- Industry-standard TQFP-44 footprint with mature AVR toolchain support (vs ATMEGA164A-AU)
- Dual USART with hardware flow control (vs ATMEGA324PV-10AN)
- Direct Arduino MightyCore compatibility with 32KB Flash headroom (vs ATMEGA324PB-AU)
Notes de conception
Estimated: at VCC=3.3V, 10 MHz active CPU, typical core current is about 4 mA and drops to <1 uA in power-down mode with RTC running. For battery-powered designs, use sleep modes between sensor reads and disable unused peripherals via PRR (Power Reduction Register). The internal 8 MHz RC oscillator can be calibrated and used instead of an external crystal to save quiescent draw. Always include a 100 nF decoupling capacitor within 5 mm of each VCC pin and a 10 uF bulk capacitor at the board supply input.
The TQFP-44 has a typical theta_JA of about 50 C/W (JEDEC EIA/JESD51 4-layer board). With 4 mA active current at 5V, dissipation is roughly 20 mW, so junction rise above ambient is only about 1 C - no heatsink is needed. For sustained full-load operation at elevated ambient (>70C), verify that brown-out detector and watchdog remain within tolerance. The exposed pad on the package underside is not present on this part, so thermal relief comes solely from PCB copper pour on VCC/GND pins.
Place the 22 pF crystal load capacitors within 3 mm of XTAL1 and XTAL2 with short traces and a ground guard ring to reduce EMI coupling into the ADC. Route analog AVCC/AREF separately from digital VCC, joined only at a single point near the regulator. The 44-pin TQFP has 0.80 mm pitch - use 0.20 mm trace/space design rules and 0.40 mm via land to maintain manufacturability at standard PCB fab houses. Keep JTAG signals away from high-frequency switching nodes.
The ADC achieves 10-bit effective resolution only when the input source impedance stays below 10 kOhm per the datasheet. Add an external op-amp buffer if a high-impedance sensor (e.g. a thermistor divider) is connected directly. Decouple AREF with a 100 nF ceramic capacitor to AGND, and avoid switching digital signals near AREF traces. For SPI runs above 5 MHz, use series damping resistors (~22-33 ohm) at the SCK/MOSI drivers to reduce ringback.
Do not program the fuse bits for an external clock without first confirming the crystal is populated - a misconfigured ATmega may become bricked and require high-voltage parallel programming to recover. The 'V' suffix denotes the 1.8V-capable picoPower variant; writing 20 MHz timing to this 10 MHz part can cause Flash corruption during ISP programming. Always verify the signature byte 0x1E9511 at the start of any field firmware update. Use the internal watchdog timer (WDT) with a 1-second timeout to recover from software hangs in unattended deployments.
Informations de conformité
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - refer to ATmega324P-15CZ automotive variants for vehicle applications.