ATTINY12-8SI - 8-Bit AVR, 8MHz, 1KB Flash | Microchip Technology
MPN: ATTINY12-8SI ✗ Son Kullanım ZamanıATTINY12-8SI Genel Bakış
A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, data memory, and digital input/output circuitry on one device. The ATTINY12-8SI belongs to the ATtiny family, within the broader AVR microcontroller and embedded-controller hierarchy. Its small memory capacity and limited pin count make it suitable for compact control tasks rather than general-purpose applications requiring extensive code storage or peripheral connectivity.
The principal characteristics include an 8-bit AVR core, 8MHz clock rating, 1KB Flash memory, 64 bytes of EEPROM, and an 8-SOIC package. These parameters support small embedded routines such as state sequencing, simple signal generation, switching control, and basic logic coordination. The 512-word Flash organization provides 1KB of code storage, while the EEPROM provides a small amount of nonvolatile data storage separate from program memory.
The ATtiny12 architecture places significant emphasis on compact implementation. With only eight pins, external signal allocation requires careful pin planning, and the available GPIO resources are limited compared with larger ATtiny devices. Program development must therefore remain compact, and peripheral functions must be selected around the actual pin requirements of the target circuit. The 8MHz maximum clock supports faster execution than lower-speed microcontrollers while retaining a straightforward embedded-control architecture.
Typical uses include small industrial control modules, LED sequencing and lighting controllers, compact timers, simple sensor interfaces, and auxiliary control functions in larger equipment. It is most appropriate where the firmware can fit within 1KB and only a small number of external signals is required. Designs needing serial communication, larger data storage, more I/O, or substantially more program memory should use a higher-capacity microcontroller instead.
For PCB implementation, place the decoupling capacitor close to the VCC pin and route the ground connection with minimal resistance. Confirm every use of the reset-capable and ADC-capable pins against the manufacturer pin-description table, especially when the package footprint is shared with another ATtiny family member. The industrial-temperature ordering code must also be confirmed against the system’s environmental requirements before release to production.
This product page combines the manufacturer identity, core operating parameters, memory configuration, package information, application guidance, and qualified drop-in alternatives into one engineering reference. It also highlights the limits of the ATTINY12-8SI so purchasing teams can distinguish genuine pin-compatible replacements from larger microcontrollers that share the SOIC-8 format but require different firmware, pin assignments, or peripheral resources.
Drop-in alternatifler için ATTINY12-8SI — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
ATTINY12-8SU
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| Microcontroller Type | 8-bit AVR Microcontroller |
| Core Architecture | AVR |
| Core Size | 8-bit |
| Azami Saat Hızı | 8MHz |
| Flash Program Memory | 1KB (512 x 16 words) |
| EEPROM Data Memory | 64 bytes |
| Paket | 8-SOIC |
| Pin Sayısı | 8 pins |
| Montaj Türü | Surface Mount |
| Besleme Gerilimi | 5V |
| Product Series | AVR ATtiny |
| Temperature Grade | Industrial |
| Program Memory Type | Flash |
| Data Memory Type | EEPROM |
| Manufacturer | Microchip Technology |
| Device Type | Embedded Microcontroller |
ATTINY12-8SI Pin Yapısı
| Pin 1 | PB0/MOSI/DI/SDA — Port B input/output pin with listed multiplexed functions |
| Pin 2 | PB1/MISO/DO/SCL — Port B input/output pin with listed multiplexed functions |
| Pin 3 | PB2/OC1A/PCINT0/INT0 — Port B input/output pin with listed multiplexed functions |
| Pin 4 | GND — Ground supply connection |
| Pin 5 | PB3/PCINT1/OC1B/ADC3/INT1 — Port B input/output pin with listed multiplexed functions |
| Pin 6 | VCC — Supply voltage input |
| Pin 7 | PB4/ADC2 — Port B input/output pin with listed multiplexed functions |
| Pin 8 | PB5/ADC1 — Port B input/output pin with listed multiplexed functions |
Tipik Uygulamalar
ATTINY12-8SI için uygundur 6 uygulamas: Compact Industrial Sequence Control, LED Sequencing and Lighting Control, Small Timer and Delay Module, Basic Sensor Signal Conditioning, Low-Power Embedded Control Node, Auxiliary Control in Industrial Equipment.
Compact Industrial Sequence Control
The ATTINY12-8SI fits small sequencing and state-control tasks because its 8-bit AVR core runs at 8MHz and its 1KB Flash memory can hold compact control logic. A manufacturer product description confirms 1KB of Flash, 512 x 16 words, and 64 bytes of EEPROM. Use the device for relay timing, small actuator sequences, or machine-state coordination where only a few inputs and outputs are required. Its industrial-temperature ordering designation makes it appropriate for controlled industrial environments, subject to lifecycle and sourcing review.
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LED Sequencing and Lighting Control
For compact LED sequencing, the ATTINY12-8SI provides enough processing speed at 8MHz to update simple patterns without a larger microcontroller. Its eight-pin SOIC format and limited 1KB program memory favor small, fixed-pattern controllers rather than feature-rich lighting hubs. Firmware can maintain timing state and drive a modest number of LEDs while the 64-byte EEPROM holds a small amount of persistent configuration. Validate available GPIO count and analog-capable pin assignments before fixing the LED layout.
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Small Timer and Delay Module
The ATTINY12-8SI can implement a dedicated timer, delay controller, or retriggerable interval sequencer because an 8MHz AVR core provides ample execution capability for basic timing tasks. Its 1KB Flash capacity is suitable for a compact finite-state program, while 64 bytes of EEPROM can preserve a limited configuration or event count. Keep the implementation deterministic and avoid unnecessary libraries so the firmware remains comfortably within memory. Confirm timer and reset behavior against the manufacturer pin and clock descriptions.
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Basic Sensor Signal Conditioning
ATTINY12-8SI can apply thresholds, debounce signals, or translate limited sensor outputs into simple control decisions. The 8MHz clock supports responsive digital processing, while the eight-pin package keeps the footprint appropriate for embedded sensor modules. Because the device has only 1KB of Flash and 64 bytes of EEPROM, it is best suited to a small fixed threshold or switching function rather than logging, complex filtering, or multi-sensor fusion. Verify analog-input availability and pin multiplexing on the assigned package.
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Low-Power Embedded Control Node
The ATTINY12-8SI is suitable for a small embedded control node that performs local switching or state management around a larger system. Its compact SOIC-8 package supports space-constrained assemblies, and its 1KB Flash and 64-byte EEPROM align with firmware that stores configuration rather than bulk data. A sleeping or intermittently powered design should be validated against the device’s power states, reset thresholds, and clock-start behavior in the manufacturer documentation. Use a higher-capacity ATtiny controller when protocol handling or buffer storage becomes necessary.
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Auxiliary Control in Industrial Equipment
Within a larger industrial product, ATTINY12-8SI can act as an auxiliary controller for a simple subsystem, such as status sequencing, relay interlocks, or a small local interface. The AVR core’s 8MHz operating speed supports prompt logic execution, and the industrial-temperature ordering code identifies it for controlled equipment use. The 1KB program-memory limit requires disciplined code partitioning, while the eight-pin package leaves little room for extensive I/O. Because the lifecycle is obsolete, production continuity should be approved through a documented sourcing and end-of-life plan.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: ATTINY12-8SI — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | ATTINY12-8SU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 8-SOIC | SOIC-8 - same package |
| Core Processor | 8-bit AVR | 8-bit AVR |
| Maximum Clock Frequency | 8MHz | 8MHz |
| Flash Program Memory | 1KB (512 x 16 words) | 1KB |
| EEPROM Data Memory | 64 bytes | 64B |
| Supply Voltage | 5V | 5V |
| Temperature Ordering Code | Industrial (-SI) | Non-industrial ordering option (-SU) |
Ana Farklılayıcılar
- Industrial-temperature ordering option within the same compact ATtiny12 configuration (karşılaştırma:ATTINY12-8SU)
- Minimal footprint for space-constrained embedded functions (karşılaştırma:ATTINY12-8SU)
- Dedicated AVR core with deterministic 8MHz operation (karşılaştırma:ATTINY12-8SU)
Tasarım Notları
Place the VCC bypass capacitor immediately adjacent to the supply pin and connect the device ground to the shortest practical return path. Only eight package pins are available, so assign pins by priority: power and ground first, then reset-critical functions, then multiplexed peripherals. Before routing, compare the assigned functions with the manufacturer pin-description table because PB, ADC, timer, and interrupt functions may share the same physical pins.
Design the 5V supply and decoupling around the switching current required by all enabled peripherals. Keep the programmed clock within the manufacturer’s operating limits and account for startup behavior when the supply crosses reset or brownout thresholds. The ATTINY12-8SI has very limited program and data memory, so power-management code and retry logic must be compact and tested at slow, nominal, and fast clock settings.
Do not treat every 8-pin AVR as a drop-in replacement merely because its package matches. The ATTINY12-8SU is the closest identified candidate because the comparison information lists the same 8MHz rating, 1KB Flash, 64-byte EEPROM, 5V supply, and SOIC-8 package. Confirm the temperature-grade difference, reset pin behavior, ADC inputs, fuse defaults, and firmware compatibility before approving a substitution.
Uyumluluk Bilgisi
The exact-MPN comparison material references RoHS and REACH fields, but no definitive compliance result is stated. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status therefore remain unknown. AEC-Q100 is not applicable because the product is a microcontroller rather than an automotive-qualified device, and no automotive qualification claim is listed for this MPN.