ATTINY15L-1SU Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip ATTINY15L-1SU is an 8-bit AVR microcontroller with 1 KB Flash program memory, 64 bytes EEPROM, and 6 I/O pins in an 8-pin SOIC package. Operates at 1.6 V to 5.5 V supply with internal 1 MHz RC oscillator and integrated analog comparator. Available worldwide for cost-sensitive embedded applications requiring a minimal-footprint MCU.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- ATTINY15L-1SU Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ATTINY15L-1SU?
- 1 KB Flash and 64-byte EEPROM with internal 1 MHz RC oscillator in an 8-pin SOIC enable complete standalone MCU designs with zero external clock components
- 1.6 V to 5.5 V operating range with low-power sleep modes suits battery-operated and energy-harvesting sensor designs
- Integrated 10-bit ADC with 4 input channels and analog comparator eliminates need for external signal-conditioning ICs in simple measurement applications
What is ATTINY15L-1SU used for?
ATTINY15L-1SU is designed for minimal-cost, minimal-footprint embedded control tasks such as LED dimming, sensor threshold detection, and simple state machine implementations in consumer and industrial products. Its 1.6 V minimum operating voltage and low-power sleep modes make it well-suited for coin-cell and AAA battery-powered remote sensors, toys, and wearables. The 8-pin SOIC package enables easy PCB assembly in space-constrained designs where larger MCU packages would waste board area.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the ATTINY15L-1SU datasheet?
ATTINY15L-1SU Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for ATTINY15L-1SU?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the Flash memory size, clock speed, and supply voltage range of ATTINY15L-1SU?
ATTINY15L-1SU includes 1 KB of in-system programmable Flash memory and a built-in 1 MHz internal RC oscillator, requiring no external crystal for basic operation. It operates from a wide supply voltage range of 1.6 V to 5.5 V, covering single-cell Li-ion, AAA alkaline, and 5 V regulated supplies. The '-L' suffix indicates the low-voltage version optimized for operation down to 1.6 V, ideal for battery-powered designs.
For a battery-powered LED controller, how many PWM channels and I/O pins does ATTINY15L-1SU offer?
ATTINY15L-1SU provides 6 general-purpose I/O pins in its 8-pin SOIC package, with at least 2 pins capable of PWM output using the internal 8-bit timer. This allows direct PWM-based LED brightness control on 2 channels without external drivers for low-current LEDs under 20 mA per pin. The 1.6 V–5.5 V supply range accommodates both 3 V coin-cell and 5 V regulated LED driver circuits in a single compact package.
How does ATTINY15L-1SU compare to ATTINY25 for ultra-low-cost designs requiring minimal I/O?
ATTINY15L-1SU offers 1 KB Flash and 6 I/O pins versus ATtiny25's 2 KB Flash and the same 8-pin package footprint, making ATTINY15L a lower-cost option when the application firmware fits within 1 KB. ATtiny25 provides more memory and additional peripheral features, but ATTINY15L suits simple tasks like switch debouncing, LED blinking, or basic sensor reads at a lower per-unit cost. Both share the 8-pin SOIC footprint, so PCB layouts are pin-compatible for easy upgrade if firmware grows.
Is ATTINY15L-1SU still recommended for new designs, and are there pin-compatible modern alternatives?
ATTINY15L-1SU is a legacy Microchip AVR device; its 8-pin SOIC footprint is shared with the newer ATtiny10, ATtiny13A, and ATtiny25 families, which offer improved peripherals, lower power, and longer product lifecycle. The '-1SU' suffix indicates SOIC-8 packaging, allowing direct pin-compatible substitution with ATtiny13A-SSU in most applications using 1 KB or less Flash. For new designs, ATtiny13A is generally recommended as it provides the same 1 KB Flash with better power management and guaranteed long-term availability.
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