ATTINY1624-SSU - 8-Bit AVR tinyAVR 2 MCU 20MHz 16KB Flash SOIC-14 | Microchip
Teilenummer: ATTINY1624-SSU ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.99 | $0,99 |
| 10 | $0.88 | $8,80 |
| 100 | $0.81 | $81,00 |
| 500 | $0.73 | $365,00 |
| 1.000 | $0.66 | $660,00 |
ATTINY1624-SSU Übersicht
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for low-cost, low-power deterministic embedded control. Within the broader taxonomy, the ATTINY1624 sits under: microcontroller -> 8-bit MCU -> AVR family -> tinyAVR 2 series -> small-package (<=14-pin) variants. It is typically used as the system master in cost-sensitive products where 32-bit processing power is unnecessary but analog and timing peripherals are still required.
Key differentiating specifications include: 16 KB Flash organized as 4K x 16-bit words (AVR instructions are 16/32-bit wide), true 1.8V-5.5V single-supply operation, up to 12 MIPS throughput at 20 MHz from internal oscillator, 12-bit differential ADC with up to 16-bit oversampling, and configurable custom logic blocks. The integrated event system allows peripherals to communicate without CPU intervention, reducing active time and average power. Sleep current below 1 uA in Power-Down with RTC running enables long battery life.
The ATTINY1624 uses a modified Harvard architecture with a two-stage pipelined 8-bit AVR core. Flash is read in 16-bit words so 16 KB of Flash stores 8K instructions. The peripheral set includes USART, SPI, I2C (TWI), 12-bit ADC, 8-bit DAC reference, analog comparators, timers/counters and PWM channels. The 14-pin SOIC package exposes 12 GPIO with multiplexed peripheral functions.
Typical applications include consumer white goods, battery-powered sensor nodes, IoT end-node controllers, LED lighting drivers, simple user interfaces (buttons/cap touch via QTouch), and small appliance control boards. The combination of small footprint, low power, and integrated analog makes it well suited for replacements of legacy ATtiny84/44 designs requiring more memory.
When designing with this device, note that the -SSU suffix indicates SOIC-14 industrial-temperature grade; firmware is uploaded via UPDI (one-wire programming/debug) instead of the older ISP/PDI interface used on classic AVRs, so a UPDI programmer or debugger such as MPLAB Snap, PICkit 5, or Atmel-ICE is required. The QTouch library and Atmel START / MPLAB X IDE are supported for peripheral configuration and code generation.
This page synthesizes current distributor pricing, drop-in alternatives in the same SOIC-14 footprint, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für ATTINY1624-SSU – 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 ATTINY1624-SSU (gleiche Bauform und Footprint) – abweichend in ADC, Operating Temperature, Package, EEPROM, SRAM.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATTINY1624-SSFR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATTINY1624-SSN
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ATTINY824-SSU
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ATTINY1626-SSU
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ATTINY1624-SSU Grenzwerte & elektrische Eigenschaften
| Family | tinyAVR 2 |
| Core | AVR 8-bit RISC with hardware multiplier |
| Maximum CPU Clock | 20 MHz |
| Flash Program Memory | 16 KB (8K x 16-bit words) |
| SRAM | 2 KB |
| EEPROM | 256 B |
| Operating Voltage | 1.8 V to 5.5 V |
| Betriebstemperatur | -40C to +85C (Industrial) |
| GPIO | 12 (multiplexed with peripherals) |
| Gehäuse | 14-pin SOIC (SOIC-14, narrow body, 0.150") |
| ADC | 12-bit differential, up to 16-bit oversampling |
| Communication | USART, SPI, I2C (TWI) |
| Programming/Debug Interface | UPDI (1-wire) |
| Montageart | Surface Mount |
| RoHS | Compliant |
ATTINY1624-SSU Pin-Konfiguration
| Pin 1 | VDD — Power supply input (1.8 V to 5.5 V) |
| Pin 2 | PA6 — GPIO / ADC AIN6 / peripheral function (multiplexed) |
| Pin 3 | PA7 — GPIO / ADC AIN7 / peripheral function (multiplexed) |
| Pin 4 | PA1 — GPIO / ADC AIN1 / peripheral function (multiplexed) |
| Pin 5 | PA2 — GPIO / ADC AIN2 / peripheral function (multiplexed) |
| Pin 6 | PA3 — GPIO / ADC AIN3 / peripheral function (multiplexed) |
| Pin 7 | GND — Ground reference |
| Pin 8 | PA0 — GPIO / ADC AIN0 / UPDI programming pin (shared) |
| Pin 9 | PB0 — GPIO / peripheral function (multiplexed) |
| Pin 10 | PB1 — GPIO / peripheral function (multiplexed) |
| Pin 11 | PB2 — GPIO / peripheral function (multiplexed) |
| Pin 12 | PB3 — GPIO / peripheral function (multiplexed) |
| Pin 13 | PA4 — GPIO / ADC AIN4 / peripheral function (multiplexed) |
| Pin 14 | PA5 — GPIO / ADC AIN5 / peripheral function (multiplexed) |
Typische Anwendungen
ATTINY1624-SSU ist geeignet für 6 Anwendungs: Battery-Powered IoT Sensor Node, LED Lighting Controller, Home Appliance User Interface Board, Consumer Remote Control / HID Device, Industrial Sensor Transmitter, Small Appliance Motor Control.
Battery-Powered IoT Sensor Node
The ATTINY1624-SSU fits battery-powered IoT sensor nodes because of its 1.8V-5.5V supply range, sub-microamp Power-Down current, and integrated 12-bit differential ADC with PGA. Placed as the central MCU, it samples a sensor periodically, buffers the result in its 2 KB SRAM, and transmits via the USART/I2C link only when the value crosses a threshold set by the event system - leaving the CPU asleep the rest of the time. This duty-cycled architecture typically achieves multi-year battery life on a single CR2032 cell.
Empfohlen
LED Lighting Controller
The ATTINY1624-SSU is well suited to small LED lighting controllers because its integrated 12-bit ADC reads light-sensor or potentiometer inputs, and its PWM channels drive MOSFET switches directly at currents up to 20 mA per pin. The configurable custom logic (CCL) implements look-up-table color mixing or thermal foldback without CPU overhead, while the 16 KB Flash stores lighting profiles, fade tables, and DMX-512 framing in software. Total BOM is minimized because no external crystal, EEPROM, or analog front-end is required.
Empfohlen
Home Appliance User Interface Board
The ATTINY1624-SSU serves as a low-cost user-interface MCU in home appliances such as washing machines, dishwashers, and microwave ovens. Its QTouch peripheral supports capacitive buttons and sliders without external touch ICs, while the USART and I2C ports link to a main controller or display board. Industrial -40C to +85C temperature rating tolerates the heat of enclosed enclosures, and 16 KB Flash holds the full state-machine firmware plus self-test routines required by IEC 60335-1 household-appliance safety standards.
Empfohlen
Consumer Remote Control / HID Device
The ATTINY1624-SSU is a strong fit for handheld consumer remote controls because of its small 14-pin SOIC footprint, sub-microamp sleep current that extends battery life, and integrated AES-compatible hardware that supports encrypted RF protocols. With USART, SPI, and I2C peripherals, it easily interfaces to sub-GHz transceivers, IR LEDs, or BLE modules such as the ATSAMR21G18A-MUT SoC for two-way communication. The 12-bit ADC also reads battery voltage for low-battery detection.
Empfohlen
Industrial Sensor Transmitter
The ATTINY1624-SSU is well matched to industrial 4-20 mA sensor transmitters, where its 12-bit differential ADC measures bridge or thermocouple inputs, its 1.8V-5.5V range runs directly from the loop supply, and its PWM drives a precision current modulator. Industrial -40C to +85C rating meets process-control environments, while the integrated PGA amplifies low-level sensor signals without external op-amps. Two-wire loop powering is possible by duty-cycling the MCU within the 3.5 mA quiescent budget.
Empfohlen
Small Appliance Motor Control
The ATTINY1624-SSU drives low-power BLDC or stepper motors in small appliances such as fans, pumps, and valve actuators. Its 16-bit Timer/Counter with PWM generates complementary drive signals, and the event system synchronizes ADC sampling to zero-crossing for sensorless back-EMF control. Up to 20 mA GPIO can sink pre-drive signals for external MOSFETs such as the A4989SLDTR-T microstep driver, while the 16 KB Flash stores application profiles and acceleration ramps.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATTINY1624-SSU – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATTINY1624-SSFR | ATTINY1624-SSN | ATTINY824-SSU |
|---|---|---|---|---|
| Package | SOIC-14 (industrial) | SOIC-14 (Tape & Reel) | SOIC-14 (extended temp) | SOIC-14 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 8 KB (-50%) |
| SRAM | 2 KB | 2 KB | 2 KB | 1 KB (-50%) |
| Maximum CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating 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 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| Programming Interface | UPDI (1-wire) | UPDI (1-wire) | UPDI (1-wire) | UPDI (1-wire) |
| ADC Resolution | 12-bit differential | 12-bit differential | 12-bit differential | 12-bit differential |
Wichtigste Unterscheidungsmerkmale
- Highest memory in tinyAVR 2 SOIC-14 form factor (vs. ATTINY824-SSU)
- Modern UPDI programming interface vs legacy ISP on ATtiny84A (vs. ATtiny84A-PU)
- Integrated 12-bit differential ADC with PGA (vs. ATTINY13A-SSU)
Designhinweise
Estimated: at VDD = 5 V and CPU running at 20 MHz with all peripherals active, the ATTINY1624-SSU draws roughly 9 mA. In Power-Down mode with the RTC running from the internal 32.768 kHz oscillator, current drops below 1 uA, so for battery-powered designs always route wake-up sources through the event system rather than polling in software. Place a 100 nF decoupling capacitor within 3 mm of the VDD pin, plus a 4.7 uF bulk capacitor on the supply rail.
Route the UPDI programming pin (shared with PA0) to a test pad or 1x3 header so that in-circuit programming remains accessible after final assembly. The UPDI line requires a series resistor of approximately 100 ohm and no external pull-up when using a Microchip programmer. Keep the SOIC-14 land pattern at least 1 mm of copper pour away from switching power traces to avoid injection of noise into the ADC reference.
Do not use legacy AVR ISP/PDI programmers such as AVRISP mkII or USBtinyISP - the ATTINY1624-SSU requires UPDI protocol only. When migrating from an ATtiny84/44 design, double-check that your existing ISP pinout is not connected to VPP or RESET lines, because the tinyAVR 2 family does not expose those pins in the same way. Also note that PA0 is the default UPDI pin and must be reconfigured via fuse if used as a regular GPIO, which disables in-circuit programming without a high-voltage UPDI enable sequence.
Compliance-Informationen
RoHS compliant per Microchip product page. Industrial temperature grade only; not AEC-Q100 qualified - select an automotive-grade Microchip MCU if AEC-Q100 is required.
