ATTINY13A-SUR

Overview

The ATTINY13A-SUR is an 8-bit AVR microcontroller featuring 1KB In-System Programmable Flash, 64 bytes EEPROM, and 64 bytes SRAM. It operates within a voltage range of 1.8V to 5.5V with speeds up to 20MHz at 4.5–5.5V. The device includes six programmable I/O lines, a 4-channel 10-bit ADC, an analog comparator, and an 8-bit Timer/Counter with PWM. It utilizes the 8-SOIC package (suffix SUR) and supports industrial temperature ranges.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput
• Integrated debugWIRE on-chip debug system and SPI-based in-system programming
• Low power consumption with selectable Idle, Power-down, and ADC Noise Reduction sleep modes
• Built-in internal calibrated oscillator and programmable Brown-out Detection circuit

Applications

• Battery-powered consumer devices requiring low active current
• Simple sensor interfaces utilizing the integrated 10-bit ADC
• Basic motor or lighting control via Timer/Counter PWM outputs
• Cost-sensitive embedded systems needing compact 8-pin packaging

Procurement Notes

Verify the ordering suffix 'SUR' corresponds to the 8-SOIC package variant when sourcing components. Confirm that the specific revision level meets project requirements, as Microchip issues periodic Product Change Notices affecting marking or assembly details. Ensure compatibility with existing PCB footprints designed for the standard SOIC-8 outline dimensions.

Selection Notes

Select this component for applications prioritizing minimal pin count and low cost over extensive peripheral sets. The 1KB Flash limit restricts complex firmware implementations. Consider the 20MHz speed grade relative to supply voltage; lower voltages reduce maximum operating frequency. Evaluate if the limited 64-byte SRAM suffices for required data buffering and stack usage.

Part Context

This part belongs to the ATtiny13A family, which shares core architectural features across various package options including PDIP, VDFN, and WQFN. The 'SUR' suffix specifically denotes the surface-mount 8-SOIC configuration. It serves as a direct successor to the ATtiny13, offering enhanced reliability and updated manufacturing processes while maintaining binary compatibility with existing software designs.

Replacement Considerations

Direct functional replacements include other ATtiny13A variants with different packages such as ATTINY13A-SSU or ATTINY13A-MU. Cross-family migration to ATtiny4A or ATtiny9A provides increased memory but requires pinout adaptation.