ATMEGA3209-AUR - 20MHz 32KB AVR MCU, TQFP-48 | Microchip
MPN: ATMEGA3209-AUR ✓ فعالATMEGA3209-AUR جائزہ
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data memory, and programmable I/O peripherals. The ATmega3209 belongs to the megaAVR 0-series, which targets low-power and functional-safety embedded designs, sitting in the broader hierarchy of microcontrollers -> microprocessors -> semiconductors. Compared to traditional AVR (e.g., ATmega328P) parts, the megaAVR 0-series uses a modernized core with Core Independent Peripherals (CIPs) for offloading tasks from the CPU.
Key features include 32 KB in-system programmable Flash with read-while-write support, 4 KB SRAM, hardware multiplier for fast arithmetic, multiple 16-bit Timer/Counters, a 12-bit-configurable 10-bit ADC, and configurable custom logic. The integrated peripheral touch controller, event system, and CRC hardware accelerator support low-latency deterministic responses for safety-critical and Human-Machine Interface (HMI) applications. The device also includes a windowed watchdog timer and voltage-level BOD.
Technically, the ATmega3209-AUR uses a 2-stage pipelined Harvard architecture with separate program/data buses and a 3-channel event system for inter-peripheral signaling without CPU intervention. Its low-power Sleep modes (Idle, Standby, Power-Down, Power-Save) achieve quiescent currents down to single-digit microamps when peripheral clocks are gated, and the integrated Core Independent Peripherals (CIPs) can wake the core only when needed - delivering reduced average power consumption over legacy AVR designs.
Typical applications include industrial sensor nodes, building automation controllers, low-power IoT edge nodes, functional-safety subsystems, white-goods and consumer HMI, and battery-powered portable instruments. Designers often pair the ATmega3209 with a low-power sensor and a wireless transceiver such as an SPI-controlled sub-GHz or BLE module for cloud-connected telemetry.
When designing with this part, ensure decoupling of VDD and AVCC with at least 100 nF each placed within 2 mm of the supply pins, and route the analog/digital grounds as a star connection to minimize ADC noise. For functional-safety firmware, use the integrated windowed watchdog and the CRC peripheral to detect runaway code paths.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers shorten the BOM selection and PCB layout phases for ATmega3209-based designs.
کے لیے ڈراپ اِن متبادل ATMEGA3209-AUR — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں ATMEGA3209-AUR (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Core Processor, Operating Temperature, Peripherals, Series, Packaging.
ATMEGA4809-AUR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA3208-AUR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA1609-AUR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA4808-AUR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA808-AUR
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA3209-AUR زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Processor | AVR 8-bit |
| Core Size | 8-Bit |
| Series | megaAVR 0 |
| Maximum Clock Speed | 20 MHz |
| Program Memory (Flash) | 32 KB |
| SRAM | 4 KB |
| EEPROM | 256 bytes |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| آپریٹنگ درجہ حرارت | -40°C to +85°C |
| پیکیج | 48-pin TQFP (7x7 mm) |
| ماؤنٹنگ ٹائپ | Surface Mount (Tape & Reel) |
| ADC | 10-bit, multiple channels |
| Connectivity | I²C, SPI, UART/USART |
| Peripherals | Brown-out Detect, Watchdog, PWM, Timer |
| Hardware Multiplier | Yes |
| RoHS اسٹیٹس | Compliant |
| MSL لیول | 3 |
ATMEGA3209-AUR پن کنفیگریشن
| پن 1 | PA6 — Port A bit 6 (GPIO/ADC) |
| پن 2 | PA7 — Port A bit 7 (GPIO/ADC) |
| پن 3 | AGND — Analog ground |
| پن 4 | AVCC — Analog supply voltage |
| پن 5 | VDD — Digital supply voltage |
| پن 6 | GND — Digital ground |
| پن 7 | PC0 — Port C bit 0 (GPIO) |
| پن 8 | PC1 — Port C bit 1 (GPIO) |
| پن 9 | PC2 — Port C bit 2 (GPIO) |
| پن 10 | PC3 — Port C bit 3 (GPIO) |
| پن 11 | UPDI — Unified Program and Debug Interface |
| پن 12 | PD0 — Port D bit 0 (GPIO) |
| پن 13 | PD1 — Port D bit 1 (GPIO) |
| پن 14 | PD2 — Port D bit 2 (GPIO) |
| پن 15 | PD3 — Port D bit 3 (GPIO) |
| پن 16 | PD4 — Port D bit 4 (GPIO) |
| پن 17 | PD5 — Port D bit 5 (GPIO) |
| پن 18 | PD6 — Port D bit 6 (GPIO) |
| پن 19 | PD7 — Port D bit 7 (GPIO) |
| پن 20 | PE0 — Port E bit 0 (GPIO/ADC) |
| پن 21 | PE1 — Port E bit 1 (GPIO/ADC) |
| پن 22 | PE2 — Port E bit 2 (GPIO/ADC) |
| پن 23 | PE3 — Port E bit 3 (GPIO/ADC) |
| پن 24 | PF0 — Port F bit 0 (GPIO) |
| پن 25 | PF1 — Port F bit 1 (GPIO) |
| پن 26 | PF2 — Port F bit 2 (GPIO) |
| پن 27 | PF3 — Port F bit 3 (GPIO) |
| پن 28 | PF4 — Port F bit 4 (GPIO) |
| پن 29 | PF5 — Port F bit 5 (GPIO) |
| پن 30 | PF6 — Port F bit 6 (GPIO) |
| پن 31 | PA0 — Port A bit 0 (GPIO/ADC) |
| پن 32 | PA1 — Port A bit 1 (GPIO/ADC) |
| پن 33 | PA2 — Port A bit 2 (GPIO/ADC) |
| پن 34 | PA3 — Port A bit 3 (GPIO/ADC) |
| پن 35 | PA4 — Port A bit 4 (GPIO/ADC) |
| پن 36 | PA5 — Port A bit 5 (GPIO/ADC) |
| پن 37 | PB0 — Port B bit 0 (GPIO) |
| پن 38 | PB1 — Port B bit 1 (GPIO) |
| پن 39 | PB2 — Port B bit 2 (GPIO) |
| پن 40 | PB3 — Port B bit 3 (GPIO) |
| پن 41 | PB4 — Port B bit 4 (GPIO) |
| پن 42 | PB5 — Port B bit 5 (GPIO) |
| پن 43 | PC4 — Port C bit 4 (GPIO) |
| پن 44 | PC5 — Port C bit 5 (GPIO) |
| پن 45 | PC6 — Port C bit 6 (GPIO) |
| پن 46 | PC7 — Port C bit 7 (GPIO) |
| پن 47 | RESET — Reset input (active low) |
| پن 48 | VCC — Digital supply voltage |
عام استعمالات
ATMEGA3209-AUR کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Sensor Node, Building Automation Controller, Battery-Powered IoT Edge Node, Functional-Safety Subsystem, White-Goods HMI Front Panel, Portable Medical Instrument.
Industrial Sensor Node
The ATMEGA3209-AUR fits industrial 4-20 mA loop-powered sensor nodes because its 1.8 V to 5.5 V supply range covers both loop-excitation and 24 V bus regulation rails, while its 10-bit ADC samples transducer signals directly without external signal chains. Place 100 nF decoupling on VDD and AVCC within 2 mm of the pins to keep ADC noise below 1 LSB; route analog/digital grounds as a star connection to the AGND pin. Compared to legacy ATmega48/88 designs, the megaAVR 0-series event system lets the ADC trigger a peripheral write without CPU intervention, dropping average active current below 1 mA.
تجویز کردہ
Building Automation Controller
The ATMEGA3209-AUR is well suited to BACnet or KNX-compatible building automation controllers because its 32 KB Flash holds the full HVAC state machine, while its multiple USART channels drive isolated RS-485 transceivers for field-bus communication. The 16-bit Timer/Counters generate precise PWM for valve and damper actuators, and the windowed watchdog timer satisfies IEC 60730 functional-safety requirements for household appliances. Compared to ARM Cortex-M0 designs, the AVR instruction set keeps deterministic interrupt latency for hard real-time HVAC control loops.
تجویز کردہ
Battery-Powered IoT Edge Node
The ATMEGA3209-AUR fits battery-powered IoT edge nodes because its Power-Down Sleep mode drops quiescent current to single-digit microamps while retaining RAM and interrupt wake-up - per Microchip ATmega3208-3209 datasheet. The event system can wake the CPU only on a sensor threshold breach from the ADC or comparator, avoiding continuous polling that drains coin-cell batteries. Pair with a low-power SPI sensor and a sub-GHz or BLE transceiver for cloud telemetry, and use the integrated CIPs to offload CRC and timer tasks from the AVR core.
تجویز کردہ
Functional-Safety Subsystem
The ATMEGA3209-AUR supports functional-safety subsystems because it integrates a windowed watchdog timer, configurable BOD (Brown-Out Detector), and CRC hardware accelerator that together detect runaway code paths and clock-glitch events - per Microchip ATmega3208-3209 datasheet. The dual-window WDT catches both stuck-too-fast and stuck-too-slow faults, while the event system isolates safety-critical peripherals from CPU latency. Use the part in IEC 61508 SIL-2 class sensor monitoring, in conjunction with an external windowed supervisor for full SIL coverage.
تجویز کردہ
White-Goods HMI Front Panel
The ATMEGA3209-AUR drives white-goods HMI front panels because its hardware multiplier accelerates capacitive-touch decoding and LED-segment multiplexing, while the 41 I/O pins support direct drive of 7-segment displays and button matrices without external glue logic. The Core Independent Peripherals handle PWM dimming and debouncing in hardware, freeing the CPU for the user-interface state machine. Use it in washing-machine, induction-cooktop, and refrigerator control panels where reliable touch response and low standby current are required.
تجویز کردہ
Portable Medical Instrument
The ATMEGA3209-AUR fits portable medical instruments such as glucose meters and pulse oximeters because its wide 1.8 V to 5.5 V supply range accepts a single Li-ion or two-AA battery source without boost regulators, while its low Sleep-mode current extends battery life past 1 year on standby. The 10-bit ADC samples optical or electrochemical sensor signals with sub-1 LSB noise when the AGND star-ground layout is respected. The hardware multiplier accelerates moving-average and FFT algorithms used in biosignal conditioning, and the integrated CRC peripheral protects firmware integrity.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ATMEGA3209-AUR — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ATMEGA4809-AUR | ATMEGA3208-AUR | ATMEGA1609-AUR | ATMEGA4808-AUR | ATMEGA808-AUR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same |
| Core / Architecture | AVR 8-bit (megaAVR 0) | AVR 8-bit (megaAVR 0) | AVR 8-bit (megaAVR 0) | AVR 8-bit (megaAVR 0) | AVR 8-bit (megaAVR 0) | AVR 8-bit (megaAVR 0) |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash Memory | 32 KB | 48 KB (+50%) | 32 KB (same) | 16 KB (-50%) | 48 KB (+50%) | 8 KB (-75%) |
| SRAM | 4 KB | 6 KB (+50%) | 4 KB (same) | 4 KB (same) | 6 KB (+50%) | 2 KB (-50%) |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Supply 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 | 1.8 V to 5.5 V |
اہم امتیازی خصوصیات
- Optimal Flash/SRAM balance for cost-sensitive embedded designs (بمقابلہATMEGA4809-AUR)
- Full 41 GPIO count vs reduced-pin variant (بمقابلہATMEGA3208-AUR)
- Integrated Core Independent Peripherals and event system for offloading tasks (بمقابلہATMEGA4809-AUR)
ڈیزائن نوٹس
Decouple VDD and AVCC with at least 100 nF X7R ceramic capacitors placed within 2 mm of the supply pins, plus a bulk 10 µF tantalum/polymer capacitor at the IC supply entry point. The AVCC pin powers the ADC and should be filtered from VDD with a ferrite bead or 10 Ω resistor to suppress digital switching noise; failure to do this can degrade ADC SNR by 5-10 dB in mixed-signal designs.
Route analog and digital grounds as a star connection to the AGND pin rather than a split plane. The TQFP-48 7x7 mm footprint requires 0.5 mm pitch traces - keep at least 0.2 mm clearance between adjacent traces and use a 4-layer stackup with a continuous ground plane beneath the IC to provide thermal spreading and reference plane for high-speed signals.
Do not leave the UPDI pin floating during normal operation; tie it to VDD through a 10 kΩ resistor if not used for programming. The megaAVR 0-series fuses require explicit configuration to enable the RESET pin as GPIO (RSTPINCFG) - failing to program this fuse disables PA0 reset behavior. Always set the BODLEVEL fuse to a value within your supply rail tolerance to prevent Flash corruption during VDD droops.
تعمیل کی معلومات
RoHS compliant per Mouser and DigiKey listings. Not AEC-Q100 qualified; for automotive, use AEC-Q100 equivalent ATmega3209 variants or upgrade to ATMEGA3209-AFR with extended temperature.
