ATTINY2313-20PJ

Overview

The ATtiny2313-20PJ is an 8-bit microcontroller based on the AVR enhanced RISC architecture, manufactured by Microchip Technology. It features a 20-pin Plastic Dual Inline Package (PDIP). The device includes 2K bytes of In-System Programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates at speeds up to 20 MHz with a supply voltage range of 2.7V to 5.5V. Key peripherals include two Timer/Counters, four PWM channels, a full-duplex USART, a Universal Serial Interface (USI), and an on-chip Analog Comparator.

Feature Summary

• High-performance 8-bit AVR RISC architecture executing most instructions in a single clock cycle
• Non-volatile memory system with ISP Flash, EEPROM, and internal SRAM for data security
• Integrated communication interfaces including Full Duplex USART and Universal Serial Interface (USI)
• Multiple power-saving modes including Idle, Power-down, and Standby

Applications

• Embedded control applications requiring low-power operation
• Systems utilizing serial communication via USART or USI
• Applications needing hardware timer and PWM generation capabilities
• Devices requiring on-chip debugging via debugWIRE interface

Procurement Notes

Verify the specific speed grade suffix '20' corresponds to the required 2.7V–5.5V operating range. Confirm the package type matches the design requirements for a 20-lead PDIP. Check current product status as datasheets may indicate end-of-life or not-recommended-for-new-designations for older AVR families. Ensure compatibility with existing programming tools for ISP and debugWIRE interfaces.

Selection Notes

Select this component when a cost-effective 8-bit solution with sufficient I/O lines and standard serial interfaces is needed. Consider the 20MHz maximum frequency against the available supply voltage headroom. Evaluate if the 2KB Flash and 128B RAM meet application constraints. Compare against the ATtiny2313A variant for potential updates in errata or extended voltage ranges before finalizing the design.

Part Context

This part belongs to the ATtiny2313 family of 8-bit microcontrollers. It shares architectural similarities with other devices in the tinyAVR series but is distinguished by its specific memory configuration and peripheral set. The PDIP package offers through-hole mounting options suitable for prototyping or specific industrial enclosures where surface mount technology is not preferred.

Replacement Considerations

ATtiny2313A-20PU

FAQ

What is the function of the USI peripheral?

The Universal Serial Interface (USI) provides a flexible serial communication capability that can be configured for SPI or I2C protocols using software control.

How does the Watchdog Timer operate?

The programmable Watchdog Timer includes an internal oscillator and can be configured to generate interrupts or reset the device upon timeout to recover from software faults.