Microchip Technology

ATTINY406-SF - 16MHz 4KB AVR Microcontroller | Microchip

MPN: ATTINY406-SF ✓ सक्रिय
20-pin SOIC Package 16 MHz Speed 4 KB (4K x 8) Memory
न्यूनतम ऑर्डर मात्रा: 1 |

ATTINY406-SF अवलोकन

The Microchip Technology ATTINY406-SF is an 8-bit AVR tinyAVR functional-safety microcontroller rated for up to 16 MHz, with 4 KB of Flash program memory and 256 bytes of SRAM in a 20-pin SOIC package. The device also provides 128 bytes of EEPROM, 18 I/O pins, and communication peripherals including I2C, SPI, and USART. These characteristics make it suitable for compact industrial, control, sensing, and communication modules where deterministic embedded processing is required in a small surface-mount footprint.

A microcontroller is an integrated circuit containing a processor core, program memory, data memory, and peripherals on one semiconductor die. The tinyAVR family combines the general-purpose AVR RISC architecture with event-driven peripherals and low-power sleep capabilities. Within the semiconductor hierarchy, ATTINY406-SF belongs to the TinyAVR 0-series, where its hardware multiplier, analog resources, and event system support efficient control tasks and signal acquisition without requiring a larger processor.

Key device features include a 16 MHz maximum operating frequency for the ATTINY406-SF ordering configuration, 4 KB of Flash memory for firmware storage, and 256 bytes of SRAM for working data. The 128-byte EEPROM provides nonvolatile storage for calibration values, configuration data, or counters. An integrated hardware multiplier improves the efficiency of multiply and multiply-accumulate operations, while I2C, SPI, and USART interfaces allow connection to sensors, transceivers, memories, and service ports.

The ATTINY406-SF belongs to Microchip's functional-safety-oriented tinyAVR 0-series and is listed by its manufacturer for operation up to 125°C. Its 20-pin SOIC package is larger than QFN options but offers a practical leaded-surface-mount format for assembly and inspection. Typical designs use the microcontroller for supervisory functions, compact sensor nodes, motor or actuator controllers, and low-to-medium-speed communication bridges. Exact voltage limits, converter characteristics, timer channels, and detailed timing parameters should be confirmed against the manufacturer datasheet.

For new layouts, place the decoupling network close to the supply pins and route sensitive analog signals away from switching nodes. Confirm oscillator, reset, programming, and exposed-pin requirements in the datasheet pin-description table before release. The 4 KB Flash limit also makes code-size budgeting important when adding communication stacks, safety checks, or field-upgrade features.

के लिए ड्रॉप-इन विकल्प ATTINY406-SF — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।

इस उत्पाद के लिए कोई drop-in alternatives उपलब्ध नहीं।

विकल्प अनुरोध करें

ATTINY406-SF Maximum Ratings और Electrical Characteristics

Product Type 8-bit AVR tinyAVR microcontroller
अधिकतम क्लॉक फ़्रीक्वेंसी 16 MHz
Flash Program Memory 4 KB (4K x 8)
SRAM 256 bytes
EEPROM 128 bytes
Processor Architecture AVR RISC, 8-bit
Hardware Multiplier Present
Number of I/O Pins 18 pins
पैकेज 20-pin SOIC
ऑपरेटिंग तापमान रेंज Up to 125°C
Serial Interfaces I2C, SPI, and USART
Peripheral Technology Event System and SleepWalking
Analog Features Accurate analog features
Watchdog and Reset Features Brown-out detection, power-on reset, and watchdog timer

ATTINY406-SF 20-pin soic पिन कॉन्फ़िगरेशन गाइड

ATTINY406-SF (20-pin soic पैकेज) के लिए पिन कॉन्फ़िगरेशन। इस डिजिटल IC में GPIO, संचार इंटरफ़ेस (UART, SPI, I2C) और पावर पिन शामिल हैं। वैकल्पिक पिन फ़ंक्शन और कॉन्फ़िगरेशन विकल्पों के लिए निर्माता डेटाशीट देखें। एम्बेडेड सिस्टम डिज़ाइन और PCB लेआउट के लिए आवश्यक।

ATTINY406-SF के लिए 20-pin soic पैकेज पिनआउट आरेख

इसके लिए कोई विस्तृत pinout data उपलब्ध नहीं: ATTINY406-SF.

देखें डेटाशीट पूर्ण पिन कॉन्फ़िगरेशन के लिए।

सामान्य अनुप्रयोग

ATTINY406-SF के लिए उपयुक्त है 6 अनुप्रयोगs: Compact Industrial Sensor Node, Motor and Actuator Control, Serial Communication Bridge, Battery-Powered Monitoring Module, Functional-Safety Control Element, Data Acquisition Front End.

🏭

Compact Industrial Sensor Node

The ATTINY406-SF fits a compact sensor node that must acquire measurements and forward them over a short serial link. Its 18 I/O pins support digital sensors, status indicators, and control outputs, while I2C can connect a sensor and SPI can serve a higher-throughput peripheral. The 4 KB Flash limit favors a focused firmware image, and the 256-byte SRAM area is sufficient for small measurement buffers. At up to 125°C, the ordering configuration supports industrial environments when the complete power, timing, and qualification requirements are confirmed in the Microchip manufacturer datasheet.

🔧

Motor and Actuator Control

ATTINY406-SF can serve as the supervisory controller in a small motor or actuator subsystem where deterministic pulse timing, status monitoring, and external communication are required. The AVR RISC core operating at up to 16 MHz, hardware multiplier, Event System, and SleepWalking support responsive control without continuous polling. I2C, SPI, and USART provide paths to position sensors, power stages, and maintenance interfaces. Firmware should include defined limits and fault handling appropriate to the actuator, while the 4 KB Flash budget requires disciplined use of library code and diagnostic routines.

🌐

Serial Communication Bridge

The ATTINY406-SF is appropriate for a compact protocol bridge that translates commands between a host UART and a local I2C or SPI device. Its three serial-interface types allow one MCU to connect to both a service port and a peripheral bus without another communications IC. The 16 MHz maximum clock supports event-driven protocol handling, and the 128-byte EEPROM can retain configuration parameters. Firmware designers should include timeouts, CRC or parity handling as required, and bounded buffer logic because only 256 bytes of SRAM are available for working data.

⚡

Battery-Powered Monitoring Module

ATTINY406-SF can be used in a small battery-powered monitor that wakes periodically, samples a sensor, records an event, and returns to a low-power state. SleepWalking and the Event System help move control toward event-driven operation, reducing the time for which the processor must remain active. The EEPROM preserves counters or thresholds across power cycles, while I2C is useful for low-power sensor connection. Power consumption must be evaluated across active, idle, and sleep states using the Microchip manufacturer datasheet, including regulator, pull-up, and sensor leakage contributions.

🖥️

Functional-Safety Control Element

The ATTINY406-SF belongs to the tinyAVR 0-series functional-safety family and can serve as a dedicated supervisory element in a larger control system. Its deterministic 8-bit architecture, watchdog and brown-out features, hardware multiplier, and communication peripherals support diagnostic and control tasks. The 20-pin SOIC package provides 18 I/O pins, leaving adequate connections for sensors, fault inputs, and status reporting. Safety suitability depends on the complete device certification scope, failure metrics, diagnostic coverage, and system-level architecture; confirm these details in the Microchip manufacturer datasheet before using the MCU as a safety mechanism.

📱

Data Acquisition Front End

ATTINY406-SF can implement a compact data-acquisition front end that samples an analog or digital sensor and transfers results to a host processor. Its accurate analog features and 18 available I/O pins support mixed signal acquisition, threshold monitoring, and digital conditioning. The Event System permits hardware-driven responses to selected events, while USART, SPI, or I2C provides a path to the upstream controller. Firmware must keep acquisition timing within the 16 MHz device capability, and designers should confirm ADC channel mapping, resolution, reference behavior, and acquisition time in the manufacturer datasheet.

अनुशंसित उत्पादों का सारांश

ATTINY1626-MFR Related TinyAVR control option उपयोग में: Compact Industrial Sensor Node, Battery-Powered Monitoring Module, Functional-Safety Control Element ATTINY1627-MFR Related TinyAVR control option उपयोग में: Compact Industrial Sensor Node, Functional-Safety Control Element ATTINY11-6PU Related AVR embedded-control family उपयोग में: Motor and Actuator Control, Battery-Powered Monitoring Module ATTINY406-MFR QFN package alternative for new layouts उपयोग में: Motor and Actuator Control, Serial Communication Bridge, Data Acquisition Front End ATTINY406-MNR Related TinyAVR communication-controller option उपयोग में: Serial Communication Bridge, Data Acquisition Front End
What are the key specifications of ATTINY406-SF that engineers should know?
The ATTINY406-SF is an 8-bit AVR tinyAVR microcontroller with a maximum clock frequency of 16 MHz, 4 KB of Flash memory, 256 bytes of SRAM, and 128 bytes of EEPROM. It provides 18 I/O pins in a 20-pin SOIC package and supports I2C, SPI, and USART. According to the Microchip manufacturer datasheet, the device also includes a hardware multiplier, Event System, SleepWalking, and accurate analog features for compact embedded control designs.
Where can I download the ATTINY406-SF datasheet PDF?
The official ATTINY406-SF datasheet PDF is available from the Microchip Technology document link on this page. The document describes the ATtiny406 family's AVR architecture, memory organization, peripherals, pin descriptions, electrical characteristics, and package options. Use the manufacturer pin-description table when assigning PCB nets because the family includes multiple package configurations, while ATTINY406-SF specifically uses the 20-pin SOIC format.
What is the ATTINY406-SF and what is it used for?
The ATTINY406-SF is a compact 8-bit AVR microcontroller with 4 KB of Flash, 256 bytes of SRAM, 128 bytes of EEPROM, and communication peripherals including I2C, SPI, and USART. It is used for embedded monitoring, control, actuator, and communication tasks. According to the Microchip manufacturer datasheet, the tinyAVR architecture also includes an Event System, SleepWalking, a hardware multiplier, and accurate analog features.
How much Flash memory and SRAM does ATTINY406-SF have?
The ATTINY406-SF has 4 KB of Flash program memory, 256 bytes of SRAM, and 128 bytes of EEPROM. The 4 KB Flash region stores executable firmware, while SRAM supports stack variables, working buffers, and interrupt context. The Microchip manufacturer datasheet identifies the 128-byte EEPROM as nonvolatile storage suitable for parameters, counters, and calibration values that must survive a reset.
What is the maximum clock frequency of ATTINY406-SF?
The ATTINY406-SF ordering configuration is rated to run at up to 16 MHz. Microchip's ATtiny406 family documentation describes the AVR core as capable of operating at up to 20 MHz in other configurations, so the ordering suffix and the frequency limits in the ATTINY406-SF datasheet should govern the design. Confirm the selected clock source and fuse configuration before final firmware timing validation.
Which serial interfaces are available on ATTINY406-SF?
The ATTINY406-SF supports I2C, SPI, and USART serial interfaces. I2C is appropriate for low-pin-count sensors and memories, SPI supports higher-throughput peripherals with a separate clock, and USART provides asynchronous serial communication for service consoles or external modules. The Microchip manufacturer datasheet should be consulted for the exact peripheral instance counts, signal multiplexing, and alternate pin functions.
What is the difference between ATTINY406-SF and ATTINY406-MFR?
The ATTINY406-SF is specified in a 20-pin SOIC package, whereas ATTINY406-MFR is associated with a 20-pin QFN exposed-pad package. Their package outlines are not interchangeable on an existing PCB, so ATTINY406-MFR is not a drop-in replacement for ATTINY406-SF. Verify operating temperature, electrical limits, and exposed-pad requirements independently when migrating between these package choices.
Can ATTINY406-MFR replace ATTINY406-SF on the same PCB?
No. The ATTINY406-MFR uses a QFN package with an exposed thermal pad, while ATTINY406-SF uses a 20-pin SOIC package. Their footprints and lead arrangements differ, requiring a PCB redesign and new land pattern. The same distinction applies when evaluating ATTINY406-MNR, which also uses a compact VQFN package rather than the SOIC footprint of ATTINY406-SF.
When should I choose ATTINY406-SF over ATTINY406-MFR or ATTINY406-MNR?
Choose ATTINY406-SF when the PCB uses a 20-pin SOIC footprint or when an assembly process favors visible, inspectable leads. Choose ATTINY406-MFR or ATTINY406-MNR only when the board uses the corresponding QFN or VQFN land pattern and can accommodate its thermal pad and assembly requirements. Package choice should follow the PCB layout rather than being treated as an interchangeable ordering option.
Is ATTINY406-SF suitable for industrial control and sensing applications?
The ATTINY406-SF is suitable for compact industrial control and sensing designs requiring an 8-bit processor, 18 I/O pins, serial communications, and operation up to 125°C. Its Event System and SleepWalking features can reduce CPU activity in event-driven systems, while the 4 KB Flash limit requires careful firmware budgeting. Confirm the complete electrical limits and qualification requirements in the Microchip manufacturer datasheet.
Where can I buy ATTINY406-SF and request a quotation?
Use the Request a Quote form on this page to request ATTINY406-SF pricing, stock confirmation, current lead time, and minimum-order details. The quote team can confirm the exact 20-pin SOIC ordering configuration and discuss available delivery quantities. Pricing and inventory can change with market conditions, so request a current quotation rather than relying on a static price listing.
What is the lead time for ATTINY406-SF?
Current lead time for ATTINY406-SF should be confirmed through the Request a Quote form on this page. The quote team can check current availability, scheduled delivery, and order multiples against the required quantity. This avoids treating a distributor search result as a guaranteed inventory commitment, particularly for programmed or traceable industrial supply chains.
Is ATTINY406-SF in stock?
ATTINY406-SF stock status should be confirmed through the Request a Quote form on this page for the exact quantity and packaging required. The form is the appropriate route for current availability, delivery scheduling, and order confirmation. Engineers should also specify whether standard production quantities or traceable sourcing are needed.
What can replace ATTINY406-SF?
No verified drop-in replacement for the 20-pin SOIC ATTINY406-SF was identified. ATTINY406-MFR and ATTINY406-MNR use different package outlines, and ATTINY406-SFR is a tape-and-reel packaging variant rather than a distinct engineering alternative. For a replacement, select a microcontroller with the same 20-pin SOIC footprint and verify pin functions, memory size, voltage range, timing, and peripherals before redesign approval.
How do I program ATTINY406-SF?
Program the ATTINY406-SF through the programming interface and configuration specified in the Microchip manufacturer datasheet. Programming generally requires a compatible programmer, the correct clock, target-voltage connection, and device-specific fuse or lock settings. Because the verified material does not identify the exact programming pins or protocol for the 20-pin SOIC configuration, use the datasheet pin-description and programming sections for the final board and production fixture.

के लिए इंजीनियरिंग संदर्भ डेटा ATTINY406-SF — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।

चयन गाइड

Choose ATTINY406-SF when the design needs an 8-bit AVR controller with 4 KB Flash, 256 bytes of SRAM, 128 bytes of EEPROM, 18 I/O pins, I2C, SPI, USART, Event System, and SleepWalking, and the PCB uses a 20-pin SOIC footprint. Its leaded package is also practical for prototypes and assemblies where visual inspection is important. Choose ATTINY406-MFR for a new 3 mm-by-3 mm QFN layout when its exposed pad fits the thermal and assembly process, or ATTINY406-MNR for a VQFN layout with tighter space requirements; neither can replace the SOIC device without changing the PCB. Do not select ATTINY406-SFR merely as a different alternative: it represents a reel-oriented ordering format rather than a distinct functional choice. If a second source is mandatory, approve a replacement only after confirming the exact package footprint, pin functions, memory map, voltage range, clock limits, peripherals, and programming process.

विकल्पों के साथ तुलना

पैरामीटर यह उत्पाद
Package 20-pin SOIC
Brand Microchip Technology
Maximum Clock Frequency 16 MHz
Core Architecture 8-bit AVR RISC
Flash Memory 4 KB
SRAM 256 bytes
EEPROM 128 bytes
Number of I/O Pins 18 pins
Serial Interfaces I2C, SPI, and USART
Maximum Operating Temperature 125°C

मुख्य विशेषताएँ

  • 20-pin SOIC package for leaded surface-mount assembly (बनामATTINY406-MFR)
  • Broader assembly and inspection access than leadless package choices (बनामATTINY406-MNR)
  • Dedicated functional-safety family feature set (बनामATTINY11-6PU)

डिज़ाइन नोट्स

Place the required supply decoupling capacitors directly between each supply pin and the nearest ground reference. Use short, low-inductance connections and a quiet ground-return path so switching current does not share the sensitive signal-return segment. Follow the capacitor value, voltage rating, and layout guidance in the Microchip manufacturer datasheet. In a 20-pin SOIC footprint, keep surrounding components outside the pin-1 orientation marker and preserve unobstructed access to programming and reset connections.

Do not treat ATTINY406-SF, ATTINY406-MFR, and ATTINY406-MNR as drop-in package alternatives. ATTINY406-SF uses a 20-pin SOIC, while the MFR and MNR selections use compact leadless packages with different land patterns and thermal-pad arrangements. A redesign may also change routing of power, communications, and exposed-pad connections. Confirm pin names, alternate functions, supply requirements, clock options, and programming signals for the exact ordering code before schematic sign-off.

Budget regulator headroom and supply current for the MCU, communications peripherals, pull-ups, and attached sensors rather than the processor alone. The 4 KB Flash and 256-byte SRAM limits favor code efficiency, but firmware size does not directly determine power use; interrupt rate, sleep configuration, peripheral clocks, and external leakage can dominate consumption. Measure active and sleep current on the assembled board and confirm whether the Event System and SleepWalking features reduce the required duty cycle.

Assign I2C and other communication pins during schematic design instead of treating them as interchangeable after placement. Account for pull-up values, bus capacitance, signal rate, and peripheral timing in the firmware. If the board combines a switching supply or motor driver with analog measurements, route sensitive inputs away from high-current edges and switching nodes, use a controlled ground reference, and test the completed assembly for noise-coupled errors.

अनुपालन जानकारी

RoHS
Unknown
REACH
Unknown
AEC-Q100
Unknown
लीड फ्री
Unknown
हैलोजन फ्री
Unknown
कॉन्फ्लिक्ट मिनरल्स
Unknown

The manufacturer material identifies ATTINY406-SF as a functional-safety tinyAVR microcontroller, but no explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 declaration was included. Confirm the current declarations for the exact ordering code before release.

डेटा सत्यापन तिथि: 2026-11-03 — डेटा XAIPART की कंपोनेंट इंजीनियरिंग टीम द्वारा सत्यापित और क्यूरेट किया गया

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संबंधित कंपोनेंट्स और शब्द

Microchip Technology ATTINY406-SF ATTINY406 ATTINY406-MFR ATTINY406-MNR ATTINY406-SFR ATTINY1626-MFR ATTINY1627-MFR ATTINY11-6PU AVR RISC 8-bit microcontroller TinyAVR tinyAVR 0-series functional-safety microcontroller embedded control 4 KB Flash memory 256-byte SRAM 128-byte EEPROM I2C SPI USART Event System SleepWalking hardware multiplier 20-pin SOIC surface-mount technology
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