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ATTINY45-15MT
Microchip Technology
IC MCU 8BIT 4KB FLASH 20WQFN
20472 Pcs New Original In Stock
AVR AVR® ATtiny, Functional Safety (FuSa) Microcontroller IC 8-Bit 16MHz 4KB (2K x 16) FLASH 20-WQFN (4x4)
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5.0 / 5.0
- (153 Ratings)
ATTINY45-15MT
Product Overview
1243492
DiGi Electronics Part Number
ATTINY45-15MT-DGManufacturer
Microchip Technology
ATTINY45-15MT
Description
IC MCU 8BIT 4KB FLASH 20WQFNInventory
20472 Pcs New Original In Stock
AVR AVR® ATtiny, Functional Safety (FuSa) Microcontroller IC 8-Bit 16MHz 4KB (2K x 16) FLASH 20-WQFN (4x4)
Quantity
Minimum 1
Minimum 1
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ATTINY45-15MT Technical Specifications
Category
Embedded, Microcontrollers
Packaging
-
Series
AVR® ATtiny, Functional Safety (FuSa)
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
6
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
EEPROM Size
256 x 8
RAM Size
256 x 8
Voltage - Supply (Vcc/Vdd)
2.7V ~ 5.5V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C (TA)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Supplier Device Package
20-WQFN (4x4)
Package / Case
20-WFQFN Exposed Pad
Base Product Number
ATTINY45
Datasheet & Documents
HTML Datasheet
ATTINY45-15MT-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.31.0001
Additional Information
Other Names
1611-ATTINY45-15MTTR-DG
ATTINY45-15MT-DG
ATTINY45-15MTTR
1611-ATTINY45-15MTCTINACTIVE
1611-ATTINY45-15MTDKR
1611-ATTINY45-15MTDKRINACTIVE
1611-ATTINY45-15MTTRINACTIVE
ATTINY45-15MTCT
ATTINY45-15MTDKR
ATTINY4515MT
1611-ATTINY45-15MTTR
1611-ATTINY45-15MTDKR-DG
Standard Package
6,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
배송 상태를 실시간으로 알 수 있는 시스템 덕분에 여러 번 확인하며 기대할 수 있었습니다.
Dec 02, 2025
他們的物流安排得很細心，包裝完整，貨品完好無損。
Dec 02, 2025
The competitive pricing makes it easier for me to purchase higher-quality items regularly.
Dec 02, 2025
The product consistency and price clarity make my shopping experience excellent.
Dec 02, 2025
After-sales support from DiGi Electronics is consistently excellent.
Dec 02, 2025
Their attentive after-sales assistance has helped me troubleshoot and improve system performance.
Dec 02, 2025
Fast response times on the website made shopping a breeze.
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Frequently Asked Questions (FAQ)
When replacing an existing ATTINY45-15MT in a harsh automotive environment, what are the critical considerations for ensuring long-term reliability beyond basic AEC-Q100 qualification, especially concerning temperature cycling and vibration?
While the ATTINY45-15MT is AEC-Q100 qualified, ensuring long-term automotive reliability involves considering the specific stress profiles of your application. For temperature cycling, ensure your PCB layout provides adequate thermal relief around the ATTINY45-15MT to prevent stress on solder joints. Proper board material selection, like high-Tg FR4, is also crucial. For vibration, consider conformal coating the assembled board to add mechanical stability to the component and its solder connections. It's also advisable to perform HALT/HASS (Highly Accelerated Life Testing/Highly Accelerated Stress Screening) on your design with the ATTINY45-15MT integrated, using cycles that mimic your worst-case environmental stresses, to uncover potential weaknesses before mass production.
In a new design requiring a functional safety (FuSa) microcontroller with limited I/O and a need for flexible serial communication, what are the potential integration risks and mitigation strategies when selecting the ATTINY45-15MT over a more complex FuSa MCU?
The primary risk of selecting the ATTINY45-15MT for a FuSa application with limited I/O is its simpler feature set compared to dedicated high-reliability MCUs. While the ATTINY45-15MT offers basic FuSa features, its lack of advanced safety mechanisms like ECC on Flash or detailed fault detection can necessitate significant software-based safety measures and rigorous testing to achieve the desired ASIL level. Mitigation strategies include thorough fault tree analysis (FTA) and Failure Modes and Effects Analysis (FMEA) at the system level to identify and address potential single-point failures. Utilize its 4x10-bit ADCs judiciously for sensor redundancy or self-checking, and ensure robust watchdog timer (WDT) and brown-out detection (BOD) implementations to handle transient faults. Careful code partitioning and static analysis tools are essential for demonstrating software integrity.
For designs transitioning from a standard commercial ATTINY45 variant to the ATTINY45-15MT for functional safety compliance, what are the key programming and debugging challenges and how can they be overcome?
Transitioning to the ATTINY45-15MT for functional safety may introduce programming and debugging challenges primarily related to the specific FuSa features and the need for enhanced traceability. While the core AVR architecture is familiar, ensuring that FuSa-related configurations (like enhanced BOD or WDT behavior) are correctly implemented requires careful code reviews and validation. Debugging FuSa-critical code often demands more sophisticated tools and techniques. Consider using Atmel Studio (now Microchip Studio) with its advanced debugging capabilities, including breakpoints and memory inspection, and ensure your programmer/debugger (e.g., Atmel-ICE, PICKit 4) supports the specific target interface of the ATTINY45-15MT. Implementing robust self-test routines and logging mechanisms within the firmware can also aid in diagnosing issues in the deployed system.
When considering a direct replacement for an older, non-AEC-Q100 ATTINY45 in a high-volume automotive sensor module, what are the potential performance or peripheral compatibility issues with the ATTINY45-15MT, and how can a smooth design-in be ensured?
While the ATTINY45-15MT is designed as a drop-in replacement for the base ATTINY45, the key difference is its AEC-Q100 qualification and potential minor revisions to internal circuitry to meet these standards. The primary risk is ensuring that any subtle timing changes or peripheral behavior variations, although unlikely to be significant given the same clock speed and core, do not impact the critical timing of your existing sensor module. To ensure a smooth design-in for the ATTINY45-15MT, thoroughly re-verify your existing firmware's timing-critical sections, particularly those interacting with the USI (Universal Serial Interface) for communication. Perform comparative testing of the new module with the ATTINY45-15MT against your benchmark test cases using the original ATTINY45 to catch any unexpected behavior.
Given the 4KB FLASH and 256 Bytes RAM limitations of the ATTINY45-15MT, what are the practical design trade-offs and potential pitfalls when implementing complex algorithms or significant safety monitoring functions within these constraints for an automotive application?
Implementing complex algorithms or extensive safety monitoring on the ATTINY45-15MT requires careful resource management. The primary trade-off is the 'code density' versus 'safety features'. Significant safety monitoring, especially if it involves redundancy or detailed fault analysis, can quickly consume the limited 4KB of FLASH. Similarly, algorithms requiring large data structures or extensive intermediate variables will strain the 256 Bytes of RAM. Potential pitfalls include exceeding code size limits, leading to compilation errors, or running out of RAM at runtime, causing unpredictable behavior or crashes. To mitigate this, optimize your code aggressively using compiler flags and efficient algorithms. Consider offloading complex computations to external components if feasible. For safety functions, prioritize essential checks and use bitwise operations and data compression techniques where possible. Allocate RAM strategically and implement strict memory usage tracking during development and testing.
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ATTINY45-15MT CAD Models
Microchip Technology ATTINY45-15MT PCB symbols & footprints
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