AT90S1200-12PI Equivalent & Substitute Parts

Part Overview

The AT90S1200-12PI is an 8-bit AVR microcontroller from Microchip Technology's AVR 90S series, featuring 1KB of FLASH program memory and operating at 12MHz. This device is classified as obsolete, making substitute components necessary for new designs and production continuity. The part is available in a 20-PDIP through-hole package with 15 I/O pins and includes integrated peripherals such as Power-On Reset (POR) and Watchdog Timer (WDT).

Substiute Parts

AT90S1200-12PI

Microchip TechnologyIn Stock: 1469AT90S1200-12PI Datasheet

Current PartRFQ

ATTINY2313-20PU

Microchip TechnologyIn Stock: 2915ATTINY2313-20PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT90S1200-12PI is based on the following critical parameters:

• Core Architecture: AVR processor family compatibility
• Package Type: 20-PDIP through-hole form factor
• Program Memory Type: FLASH-based storage
• Operating Temperature Range: -40°C ~ 85°C
• Supply Voltage Compatibility: Overlapping or extended voltage ranges
• I/O Pin Count: Minimum 15 I/O pins required
• Peripheral Set: SPI connectivity and watchdog timer functionality

The ATTINY2313-20PU qualifies as a substitute based on matching core architecture, identical package format, compatible operating temperature range, and enhanced specifications across memory, speed, and I/O capabilities.

Parameter Comparison

Engineering Selection Recommendations

The ATTINY2313-20PU is a direct substitute for the AT90S1200-12PI based on the following engineering criteria:

• Package Compatibility: Both devices use identical 20-DIP through-hole packaging, enabling direct PCB replacement without layout modifications.
• Thermal Range: Matching -40°C ~ 85°C operating temperature range ensures equivalent environmental performance.
• Active Product Status: The ATTINY2313-20PU is an active product with ongoing manufacturer support, addressing the obsolescence of the AT90S1200-12PI.
• Regulatory Compliance: The ATTINY2313-20PU meets ROHS3 compliance requirements, whereas the AT90S1200-12PI is non-compliant.
• Enhanced Specifications: The substitute provides increased program memory (2KB vs. 1KB), higher clock speed (20MHz vs. 12MHz), additional I/O pins (18 vs. 15), and extended peripheral functionality including UART/USART and PWM capabilities.
• Voltage Range: The ATTINY2313-20PU supports a wider supply voltage range (2.7V ~ 5.5V), providing greater design flexibility while maintaining compatibility with the original 4V ~ 6V operating window.

Frequently Asked Questions (FAQ)

Q: Can the ATTINY2313-20PU be used as a direct replacement for the AT90S1200-12PI?

A: Yes. Both devices share the same 20-DIP package format, identical operating temperature range, and compatible AVR core architecture. The ATTINY2313-20PU provides enhanced memory, speed, and peripheral capabilities while maintaining backward compatibility at the package level.

Q: What are the key differences between these two microcontrollers?

A: The ATTINY2313-20PU offers 2KB program memory compared to 1KB, operates at 20MHz versus 12MHz, provides 18 I/O pins instead of 15, includes UART/USART and PWM peripherals not present in the AT90S1200-12PI, and supports a wider supply voltage range (2.7V ~ 5.5V vs. 4V ~ 6V).

Q: Is the ATTINY2313-20PU pin-compatible with the AT90S1200-12PI?

A: Both devices use the 20-DIP package with identical physical dimensions (0.300", 7.62mm). Pin-level compatibility depends on specific application requirements and firmware implementation. The ATTINY2313-20PU provides additional I/O pins (18 vs. 15), which may require firmware adjustments but does not prevent physical substitution.

Q: What is the supply voltage requirement for the ATTINY2313-20PU?

A: The ATTINY2313-20PU operates within the 2.7V ~ 5.5V range, which encompasses the original AT90S1200-12PI specification of 4V ~ 6V. Designs operating within the 4V ~ 6V window require no voltage supply modifications.

Q: Does the ATTINY2313-20PU meet modern regulatory standards?

A: Yes. The ATTINY2313-20PU is ROHS3 compliant and REACH unaffected, whereas the AT90S1200-12PI is RoHS non-compliant. This makes the substitute suitable for applications requiring modern environmental and regulatory compliance.

Q: What is the inventory status of these parts?

A: The AT90S1200-12PI has 1441 pieces available as new original stock. The ATTINY2313-20PU has 2844 pieces available as new original stock in tube packaging.