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ATTINY261-15MD
Microchip Technology
IC MCU 8BIT 2KB FLASH 32QFN
2079 Pcs New Original In Stock
AVR AVR® ATtiny Microcontroller IC 8-Bit 16MHz 2KB (1K x 16) FLASH 32-QFN (5x5)
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5.0 / 5.0
- (320 Ratings)
ATTINY261-15MD
Product Overview
1286101
DiGi Electronics Part Number
ATTINY261-15MD-DGManufacturer
Microchip Technology
ATTINY261-15MD
Description
IC MCU 8BIT 2KB FLASH 32QFNInventory
2079 Pcs New Original In Stock
AVR AVR® ATtiny Microcontroller IC 8-Bit 16MHz 2KB (1K x 16) FLASH 32-QFN (5x5)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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365 - Day Quality Guarantee - Every part fully backed.
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ATTINY261-15MD Technical Specifications
Category
Embedded, Microcontrollers
Packaging
-
Series
AVR® ATtiny
Product Status
Active
DiGi-Electronics Programmable
Not Verified
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O
16
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
EEPROM Size
128 x 8
RAM Size
128 x 8
Voltage - Supply (Vcc/Vdd)
2.7V ~ 5.5V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 150°C (TA)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Supplier Device Package
32-QFN (5x5)
Package / Case
32-VFQFN Exposed Pad
Base Product Number
ATTINY261
Datasheet & Documents
HTML Datasheet
ATTINY261-15MD-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
3A001A2A
HTSUS
8542.31.0001
Additional Information
Other Names
ATTINY26115MD
1611-ATTINY261-15MDCTINACTIVE
1611-ATTINY261-15MDDKRINACTIVE
1611-ATTINY261-15MDTR
1611-ATTINY261-15MDTRINACTIVE
1611-ATTINY261-15MDDKR-DG
1611-ATTINY261-15MDTR-DG
ATTINY261-15MD-DG
ATTINY261-15MDCT
1611-ATTINY261-15MDDKR
ATTINY261-15MDDKR
ATTINY261-15MDTR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
기술적 상담과 사후 지원 모두 만족스럽고, 가격도 경쟁력 있어 추천합니다.
de desembre 02, 2025
Chez DiGi Electronics, la disponibilité des composants est constante, et le service après-vente répond parfaitement à mes attentes.
de desembre 02, 2025
The comprehensive and professional packaging process is commendable.
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Frequently Asked Questions (FAQ)
What are the key reliability risks when using the ATTINY261-15MD in an automotive environment near its maximum operating temperature of 150°C, and how can I mitigate them?
The ATTINY261-15MD is AEC-Q100 qualified and rated for -40°C to 150°C, but sustained operation near 150°C significantly increases failure risk due to accelerated electromigration, reduced FLASH endurance, and potential timing drift from internal oscillator instability. To mitigate: derate the supply voltage toward 3.3V (not 5.5V) at high temps, avoid continuous FLASH writes, and validate timing-critical code under thermal stress. Consider adding external watchdog supervision if used in safety-critical subsystems.
Can I safely replace a legacy ATTINY261V-10MU with the ATTINY261-15MD in a 3.3V industrial control board without firmware changes?
Yes, but with caveats. The ATTINY261-15MD runs at 16 MHz vs. the V-10MU’s 10 MHz, so timing loops, UART baud rates, and delay routines calibrated for 10 MHz will run 60% faster. You must revalidate or adjust time-sensitive code. Voltage compatibility is fine (both support 2.7–5.5V), and pinout/peripherals are identical. However, verify that your programmer supports the -15MD’s signature bytes to avoid flash lockout during migration.
How does the ATTINY261-15MD’s internal oscillator accuracy impact real-world USI-based I²C communication, and should I use an external crystal instead?
The ATTINY261-15MD’s internal RC oscillator has ±3% accuracy over voltage and temperature (per datasheet), which exceeds the ±2% tolerance typically required for reliable I²C at 100 kHz. In noisy or wide-temperature environments (e.g., automotive cabins), this can cause bus errors. For robust USI I²C operation, especially above 400 kHz or in multi-master setups, use a 16 MHz external crystal with load capacitors. Reserve the internal oscillator for low-speed sensor polling or cost-sensitive applications where occasional retries are acceptable.
What layout and thermal considerations are critical when mounting the ATTINY261-15MD in a 32-QFN package on a high-density PCB with adjacent power components?
The 32-QFN exposed pad must be soldered directly to a grounded thermal plane with multiple vias to dissipate heat—especially critical given the 150°C rating and MSL 3 moisture sensitivity. Avoid placing high-current traces or switching regulators within 5 mm to prevent thermal coupling and ground bounce. Ensure the PCB assembly process includes proper reflow profiling to avoid voiding under the pad, which can lead to localized hot spots and premature failure. Also, maintain 0.2 mm clearance around the package to comply with IPC-7351 for reliable solder joints.
Is the ATTINY261-15MD a drop-in alternative to the STM8S003F3P6 in a 5V-tolerant sensor interface design, and what peripheral limitations should I watch for?
Not a true drop-in. While both are 8-bit, 2KB FLASH MCUs in similar packages, the ATTINY261-15MD lacks the STM8S003F3P6’s built-in 10-bit DAC, advanced 16-bit timers, and true 5V-tolerant I/O (the ATTINY261-15MD’s I/O is only guaranteed up to VDD + 0.5V). If your design uses 5V logic signals, you’ll need level shifters. Additionally, the ATTINY261-15MD’s USI is less flexible than STM8’s hardware I²C/SPI, requiring more bit-banging for complex protocols. Only consider substitution if your application uses basic GPIO, ADC, and PWM—and verify signal integrity at 5V interfaces.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
ATTINY261-15MD CAD Models
Microchip Technology ATTINY261-15MD PCB symbols & footprints
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