ATTINY13-20SU

Overview

The ATTINY13-20SU is an 8-bit AVR microcontroller manufactured by Microchip Technology. It features a high-performance, low-power CMOS architecture with 1K bytes of In-System Programmable Flash, 64 bytes of EEPROM, and 64 bytes of internal SRAM. The device operates at speeds up to 20 MHz when supplied with voltages between 4.5V and 5.5V, achieving throughput approaching 20 MIPS. It supports a supply voltage range of 2.7V to 5.5V and includes six programmable I/O lines within an 8-lead Plastic Gull-Wing Small Outline (JEDEC SOIC) package.

Feature Summary

• Advanced RISC Architecture: Executes powerful instructions in a single clock cycle for efficient processing.
• Non-volatile Memory Segments: Includes self-programmable Flash, EEPROM, and SRAM with data retention capabilities.
• Peripheral Integration: Features an 8-bit Timer/Counter, 4-channel 10-bit ADC, analog comparator, and watchdog timer.
• On-chip Debug System: Supports debugWIRE for in-system programming and debugging via SPI.

Applications

• Embedded control systems requiring low power consumption
• Battery-powered devices utilizing picoPower technology
• Simple sensor interfaces using the integrated ADC
• General-purpose logic control applications

Procurement Notes

Verify the specific speed grade suffix '20' corresponds to the required 20 MHz performance at 4.5V–5.5V operating conditions. Confirm the 'SU' suffix indicates the 8-lead JEDEC SOIC package variant. Ensure compatibility with industrial temperature ranges (-40°C to +85°C). Check current availability status as older revisions may be discontinued or subject to last-time buys.

Selection Notes

Select this component for designs needing a compact 8-bit solution with sufficient I/O for basic peripheral management. Consider the 20 MHz speed grade only if the system voltage reliably exceeds 4.5V during operation. Evaluate the trade-off between the 1KB Flash capacity and application complexity. Verify that the SOIC package dimensions fit the PCB layout constraints compared to alternative packages like MLF or PDIP.

Part Context

This part belongs to the ATtiny13 family of 8-bit AVR microcontrollers. It shares architectural similarities with other members like the ATtiny13V but differs in speed grades and voltage thresholds. The '20' designation specifies the maximum operational frequency, while 'SU' defines the surface-mount package type. It serves as a cost-effective entry-level MCU for resource-constrained embedded projects.

Replacement Considerations

Direct substitutes include other ATtiny13 variants with different package suffixes (e.g., PU for PDIP, MU for MLF) if pinout compatibility allows. Cross-family replacements from the ATtiny25 or ATtiny45 series offer increased memory but require software adaptation due to register differences.