ATTINY412-SSFR - 8-bit AVR tinyAVR 1 MCU, 4KB Flash, SOIC-8 | Microchip
Teilenummer: ATTINY412-SSFR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.05 | $1,05 |
| 10 | $0.95 | $9,50 |
| 100 | $0.83 | $83,00 |
| 500 | $0.72 | $360,00 |
| 1.000 | $0.62 | $620,00 |
ATTINY412-SSFR Übersicht
An 8-bit AVR microcontroller is aRISC-architecture CPU that executes one instruction per clock cycle, enabling deterministic real-time response with very low active power. The tinyAVR 1-series sits insideMicrochip's 8-bit AVR portfolio below the megaAVR and XMega families, optimized for cost- and power-constrained embedded designs that need on-chip analog and event-driven peripherals.Positioned as a drop-in successor to legacy ATtiny25/45/85 partson SOIC-8 footprints, the ATtiny412 adds modern peripherals (Event System, configurable custom logic) while preserving the AVR toolchain (GCC, Atmel Studio / Microchip Studio, MPLAB X).
Key differentiating specifications include 4 KB self-programmable Flash, 256 B SRAM, 128 B EEPROM, six ADC channels with 10-bit resolution, a single-channel 8-bit DAC, two 16-bit Timer/Counter Type B instances plus one 12-bit Timer/Counter Type D, and the Peripheral Touch Controller (PTC) supporting touch buttons via the slider/wheel QTouch library. A 10-pin UPDI programming/debug interface replaces the legacy ISP header, and the device operates from 1.8 V to 5.5 V with picoPower sleep modes down to sub-microamp current.
The architecture combines the deterministic AVR 8-bit pipeline with a hardware multiplierfor faster integer math, plus the Event System that lets peripherals trigger each other without CPU intervention - critical for SleepWalking low-power designs. The integrated 8-bit DAC and 10-bit ADC remove the need for external analog components in closed-loop and sensor-interface designs.
Typical applications include capacitive-touch button interfaces, IoT sensor nodes, low-power wearables, LED lighting controllers, and small appliance user-interface boards where its SOIC-8 footprint, on-chip analog, and picoPower modes are decisive advantages. The Functional Safety (FuSa) variant is suited to designs targeting IEC 60730 class B appliance-safety requirements.
When designing with the ATTINY412-SSFR, route the UPDI programming pin to a dedicated test pad or 1x3 header for in-system programming; the SOIC-8 does not expose the legacy 6-pin ISP interface. Decouple VDD with a 100 nF X7R ceramic placed within2 mm of the supply pin, and leave PB0/PB1 free for the default UPDI/XTAL functions unless re-mapped via the fuse settings.
This page synthesizesdistributor pricing, same-brand and cross-brand drop-in alternatives, andpractical design notes thatcomplementthemanufacturer datasheet (DS40001911B).
Drop-in-Alternativen für ATTINY412-SSFR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATTINY412-SSFR (gleiche Bauform und Footprint) – abweichend in ADC, Core, EEPROM, Operating Temperature, Package.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATTINY412-SSF
✅ Drop-In✓ Auf Lager
$0.36 / Stück
Datenblatt ansehen →ATTINY212-SSN
✅ Drop-In✓ Auf Lager
$0.41 / Stück
Datenblatt ansehen →ATTINY1624-SSU
✅ Drop-In✓ Auf Lager
$0.66 / Stück
Datenblatt ansehen →ATTINY412-SSFR Grenzwerte & elektrische Eigenschaften
| Core | 8-bit AVR RISC with hardware multiplier |
| Series | tinyAVR 1-series (Functional Safety, FuSa) |
| Flash Memory | 4 KB |
| SRAM | 256 B |
| EEPROM | 128 B |
| Max CPU Speed | 20 MHz |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| ADC | 10-bit, 6 channels |
| DAC | 8-bit, 1 channel |
| Timers | 2 x 16-bit + 1 x 12-bit |
| PTC (Touch Controller) | Peripheral Touch Controller supporting QTouch library |
| Custom Logic | Configurable (LUT-based) |
| Programming Interface | UPDI (10-pin) |
| Gehäuse | SOIC-8 |
| Betriebstemperatur | -40C to +125C |
| RoHS-Status | Compliant |
| Montageart | Surface Mount |
ATTINY412-SSFR Pin-Konfiguration
| Pin 1 | VDD — Supply voltage (1.8 V to 5.5 V) |
| Pin 2 | PB3 — Digital I/O / ADC input / peripheral function |
| Pin 3 | PB2 — Digital I/O / UPDI programming / debug data line |
| Pin 4 | PB1 — Digital I/O / peripheral function |
| Pin 5 | PB0 — Digital I/O / peripheral function / CLKI |
| Pin 6 | PA3 — Digital I/O / ADC input / peripheral function |
| Pin 7 | PA2 — Digital I/O / ADC input / default RESET / TDI |
| Pin 8 | GND — Ground |
Typische Anwendungen
ATTINY412-SSFR ist geeignet für 6 Anwendungs: Capacitive-Touch User Interface, Battery-Powered IoT Sensor Node, Home Appliance Control Board (Class B / Functional Safety), LED Lighting Controller, Low-Cost Wearable / Fitness Sensor, Industrial Sensor Module / 4-20 mA Loop Transmitter.
Capacitive-Touch User Interface
The ATTINY412-SSFR integratesthe Peripheral Touch Controller (PTC) supporting self- and mutual-capacitance electrodes withMicrochip QTouch library support.A typical 4- to 6-button touch keypad draws under 1 mA active and sub-microamp in SleepWalking touch wake - making the part ideal for white-good and lighting control panels.According to the Microchip ATtiny212/412 datasheet family, the PTC coupled with the Event System wakes the CPU only on a validated touch, eliminating polling.Recommended companion: AT42QT2120 (touch IC), ATTINY1626 (touch MCU upgrade), and 100 nF X7R decoupling.
Empfohlen
Battery-Powered IoT Sensor Node
The ATTINY412-SSFR's picoPower SleepWalking mode drops active current below 1 uA while the Event System / ADC autonomously wakes the CPU only when a measured threshold crosses - ideal for coin-cell and 2xAAA sensor nodes reporting every few seconds. The 1.8 V to 5.5 V VDD range supports single-cell Li-Ion / alkaline chemistries directly, while the 6 ADC inputs interface with thermistor, photodiode, and gas-sensor analog front-ends.According toMicrochip ATtiny212/412 datasheet family DS40001911B, retention current is well under 1 uA in Power-Down with RTC running. Companion: a sub-GHz or BLE module, MCP1643 boost for single-cell, and a low-quiescent LDO.
Empfohlen
Home Appliance Control Board (Class B / Functional Safety)
As a Functional Safety (FuSa) variant ofthe tinyAVR 1-series, the ATTINY412-SSFR is suitable for IEC 60730 Class B appliance-safety designs requiring watchdog, brown-out, and clock-monitoring firmware support.The 16 MIPS CPU throughput executes closed-loop motor / heater control loops while the 6-channel 10-bit ADC reads NTC thermistors and current-sense amplifierswith 10-bit resolution - sufficient for over-temperature and over-current detection. The 8-bit DAC drives setpoint outputs for analog-controlled stages.According to the Microchip datasheet family, the FuSa documentation package includes FMEDA and diagnostic-library reference code. Companion: an isolated gate-driver IC for AC-line switching and an ADC-front-end op-amp.
Empfohlen
LED Lighting Controller
The ATTINY412-SSFR is well-suited to constant-current LED driver boards where the 8-bit DAC controls the analog setpoint of a current-regulator stage and the 16-bit Timer/Counter Type B instances generate high-resolution PWM dimming curves.The 4 KB Flash stores mood-lighting profiles and the 128-byte EEPROM preserves user settings across power cycles.According to theMicrochip ATtiny212/412 datasheet family DS40001911B, the Event System allows the 16-bit PWM to update on a hardware event - useful for cross-fade animations without jitter. The wide 1.8 V - 5.5 V VDD range supports both 3.3 V and 5 V LED-driver rails. Companion: a high-current constant-current LED driver, MOSFETs, and a temperature sensor for thermal foldback.
Empfohlen
Low-Cost Wearable / Fitness Sensor
With picoPower active current below 1 mA andsub-microamp sleepcurrent, the ATTINY412-SSFR extends coin-cell life in wearables like heart-rate straps, fitness bands, and BLE beacon tags. The 6-channel 10-bit ADC reads PPG / pulse-oximeter photodiode signals, while the I2C / SPI master interfaces connect to low-energy sensor ICs and a host BLE SoC. The 20 MHz CPU provides sufficient throughput to filter sensor data without offloading.According toMicrochipATtiny212/412 datasheet family DS40001911B, SleepWalking mode allows the ADC to autonomously monitor signals and wake the CPU onlywhen a threshold is crossed, preserving battery. Companion: a low-Iq LDO, an analog front-end, and an external BLE / ANT module.
Empfohlen
Industrial Sensor Module / 4-20 mA Loop Transmitter
The ATTINY412-SSFR's industrial -40C to +125C temperature range and 4 KB Flash make it a fit for industrial sensor-conditioning modules.The 6-channel 10-bit ADC reads bridge / RTD / pressure / load-cell signals, the 8-bit DAC generates the 4-20 mA loop setpoint via an external op-amp + transistor driver, and the Event System handles fault detection without CPU load. According to the Microchip datasheetfamily, the brown-out detector and watchdog timer support industrial reliability expectations. Companion: an instrumentation amplifier, a 4-20 mA loop driver, and an isolated DC-DC for loop-powered designs.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATTINY412-SSFR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATTINY412-SSF | ATTINY212-SSN | ATTINY1624-SSU |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-8 | SOIC-8 - same | SOIC-8 - same | SOIC-8 (extendedSOIC) - verify land pattern |
| Core | 8-bit AVRRISC @ 20 MHz | 8-bit AVR RISC @ 20 MHz | 8-bit AVR RISC @ 20 MHz | 8-bit AVR RISC @ 20 MHz |
| Operating Voltage | 1.8 V - 5.5 V | 1.8 V - 5.5 V | 1.8 V - 5.5 V | 1.8 V - 5.5 V |
Wichtigste Unterscheidungsmerkmale
- Functional Safety (FuSa) tinyAVR 1-seriesdevice in SOIC-8 (vs. ATTINY212-SSN)
- PTC touch controller + Event System on-chip (vs. Legacy ATtiny25/45/85 in SOIC-8)
- picoPower SleepWalking with autonomous ADC monitoring (vs. Larger pin-count tinyAVR / megaAVR MCUs)
Designhinweise
The ATTINY412-SSFR uses the UPDI one-wire programming interfaceon pin 3 (PB2), not the legacy 6-pin AVR ISP.For prototype bring-up, route PB2 to a dedicated 1x3 or 2x3 through-hole header with VDD and GND - you cannot reuse the old ATtiny25/45/85 ISP footprint. If the firmware disables the UPDI pin function via fuses, a high-voltage UPDI programmer is required to recover the part.
Decouple VDD (pin 1) with a 100 nF X7R ceramic placed within 2 mm of the supply pin and a 10 uF bulk capacitor on the rail.In SleepWalking designs, the Event System / ADC should handle threshold detection autonomously to keep CPU wake duration and active Energy measurable.According to the Microchip ATtiny212/412 datasheet family, retention current in Power-Down with RTC is well below 1 uA when peripherals are properly disabled.
Route the UPDI / PB2 trace toa dedicated test pad or 1x3 header that can be probed during firmware development. Keep PB2 away from switching signals / oscillators; on-board noise on UPDI reduces programming reliability. Use a small-series resistor (e.g. 100 ohm) inline with UPDI if the trace length exceeds ~50 mm or runs near a high-current switching node. The PA2 / RESET pin (pin 7) can be reconfigured as GPIO only after disabling its reset function via fuse - leave the bootloader dark.
Compliance-Informationen
RoHS and lead-free per Microchip product page. The -SSFR ordering code is the Functional Safety (FuSa) variant suitablefor IEC 60730 Class B appliance-safety designs but is not AEC-Q100 qualified.
