AT90S2313-4SC Equivalent & Substitute Parts

Part Overview

The AT90S2313-4SC is an 8-bit AVR microcontroller from Microchip Technology's AVR 90S series, featuring 2KB FLASH program memory, 128 bytes each of EEPROM and RAM, and 15 I/O pins. Operating at 4MHz with a supply voltage range of 2.7V to 6V, this device integrates essential peripherals including SPI and UART/USART connectivity, brown-out detection, power-on reset, PWM, and watchdog timer functionality in a 20-SOIC surface mount package.

The AT90S2313-4SC is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support legacy system maintenance and production requirements.

Substiute Parts

AT90S2313-4SC

Microchip TechnologyIn Stock: 6950AT90S2313-4SC Datasheet

Current PartRFQ

ATTINY2313V-10SU

Microchip TechnologyIn Stock: 2105ATTINY2313V-10SU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT90S2313-4SC is determined by the following critical parameters:

• Core Architecture: AVR processor family compatibility
• Memory Configuration: Minimum 2KB FLASH, 128 bytes EEPROM, 128 bytes RAM
• I/O Count: Minimum 15 I/O pins
• Package: 20-SOIC form factor for PCB compatibility
• Connectivity: SPI and UART/USART interfaces
• Peripherals: Brown-out detection, POR, PWM, and WDT functionality
• Supply Voltage: Operating range must accommodate 2.7V ~ 6V or be compatible within system design constraints

The ATTINY2313V-10SU meets these substitution criteria while offering enhanced specifications including higher operating speed, wider temperature range, and active product status with improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The ATTINY2313V-10SU is a direct functional substitute for the AT90S2313-4SC based on the following engineering criteria:

Memory and Functional Equivalence: Both devices feature identical 2KB FLASH, 128-byte EEPROM, and 128-byte RAM configurations with matching core processor architecture and peripheral sets.

Package Compatibility: Both components utilize the 20-SOIC surface mount package with identical physical dimensions, enabling direct PCB layout compatibility without redesign.

Connectivity and Peripherals: SPI, UART/USART interfaces and peripheral functions (brown-out detection, POR, PWM, WDT) are identical across both parts.

Product Status and Compliance: The ATTINY2313V-10SU is an active product with ROHS3 compliance certification, addressing the obsolescence of the AT90S2313-4SC and meeting modern regulatory requirements.

Performance Enhancement: The ATTINY2313V-10SU operates at 10MHz versus 4MHz, providing increased processing capability while maintaining backward compatibility with existing firmware.

Temperature and Supply Considerations: The ATTINY2313V-10SU supports an extended operating temperature range (-40°C to 85°C) and operates within the 1.8V to 5.5V supply range. System designs operating within the original 2.7V to 6V specification will function with the substitute part; however, designs requiring operation below 1.8V or above 5.5V require evaluation.

Frequently Asked Questions (FAQ)

Q: Can the ATTINY2313V-10SU directly replace the AT90S2313-4SC without PCB modifications?

A: Yes. Both devices share identical 20-SOIC package dimensions and pinout compatibility, allowing direct socket substitution without PCB layout changes.

Q: Are there firmware compatibility considerations between these parts?

A: Both devices use the same AVR core architecture and instruction set. Firmware compiled for the AT90S2313-4SC will execute on the ATTINY2313V-10SU. The higher clock speed of the ATTINY2313V-10SU may affect timing-dependent code; review timing-critical sections if present.

Q: What is the impact of the different supply voltage ranges?

A: The AT90S2313-4SC operates at 2.7V to 6V; the ATTINY2313V-10SU operates at 1.8V to 5.5V. Systems designed for the original part's full voltage range (above 5.5V) require voltage regulation or alternative solutions. Most standard 3.3V and 5V systems are compatible with both parts.

Q: Does the increased I/O count (18 vs. 15) affect substitution?

A: The additional I/O pins on the ATTINY2313V-10SU do not create compatibility issues. Existing designs using 15 I/O pins will function identically; the extra pins remain available for future expansion.

Q: What are the compliance differences between these parts?

A: The AT90S2313-4SC is RoHS non-compliant; the ATTINY2313V-10SU is ROHS3 compliant. For applications subject to RoHS regulations, the ATTINY2313V-10SU is the required choice.

Q: Is the ATTINY2313V-10SU suitable for legacy system maintenance?

A: Yes. The ATTINY2313V-10SU is an active product with verified programmability and current inventory availability, making it suitable for production support and legacy system repairs where the original AT90S2313-4SC is no longer available.