ATTINY26-16PJ

Overview

The ATtiny26-16PJ is an 8-bit AVR microcontroller in a 20-lead PDIP package. It features a RISC architecture with up to 16 MIPS throughput at 16 MHz. Memory includes 2K bytes of In-System Programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. The device offers 16 programmable I/O lines, two 8-bit Timer/Counters, a Universal Serial Interface, and a 10-bit ADC with 11 single-ended and 8 differential channels. Operating voltage is 4.5V to 5.5V.

Feature Summary

• High-performance 8-bit AVR core with fully static operation and single-clock cycle execution for most instructions.
• Integrated non-volatile memory with high endurance Flash and EEPROM, plus internal SRAM for data storage.
• Versatile peripheral set including dual 8-bit timers with PWM outputs, USI for serial communication, and a high-precision 10-bit ADC.
• Multiple power-saving modes including Idle, Noise Reduction, and Power-down to optimize energy consumption.

Applications

• Battery chargers
• Lighting ballasts
• Low-end thermostats
• Fire detectors

Procurement Notes

Verify the specific ordering code matches the required speed grade and package type. Confirm that the industrial temperature range (-40°C to +85°C) aligns with your system requirements. Ensure the 4.5V to 5.5V operating voltage range is compatible with your power supply design. Check for any specific revision errata regarding analog comparator delays if applicable.

Selection Notes

Select this model for applications requiring a balance of processing speed and low power consumption within the 4.5V to 5.5V range. The 16 MHz speed grade provides higher throughput compared to lower-speed variants. Consider the 20-lead PDIP package for through-hole mounting needs. Evaluate if the integrated ADC and timer peripherals meet your control loop requirements without external components.

Part Context

This component belongs to the ATtiny26(L) family of low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. The '16' suffix indicates the maximum operating frequency of 16 MHz, distinguishing it from the 'L' variant which supports lower speeds and voltages. The 'PJ' suffix denotes the 20-lead Plastic Dual Inline Package (PDIP).

Replacement Considerations

ATtiny26-16PU: Same electrical specifications but in a 20-lead SOIC package instead of PDIP.

FAQ

What is the purpose of the bottom pad in QFN/MLF packages?

The bottom pad under the QFN/MLF package should be soldered to ground to ensure proper thermal dissipation and electrical connection.

How does the ATtiny26 handle analog comparator initialization?

If powered by a slow rising VCC, the first Analog Comparator conversion may be delayed. The workaround is to disable then enable the Analog Comparator after power-on or reset before the first conversion.