IS31CS8968AG-LQLS2 Equivalent & Substitute Parts

Part Overview

The IS31CS8968AG-LQLS2 is an 8-bit microcontroller IC manufactured by Lumissil Microsystems, featuring 128KB FLASH program memory and a 48-LQFP (7x7) surface mount package. This device integrates an 8051 core processor operating at 24MHz with comprehensive connectivity options including CANbus, I2C, LINbus, SPI, and UART/USART interfaces. The part is currently designated as Last Time Buy, indicating end-of-life status. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this microcontroller.

Substiute Parts

IS31CS8968AG-LQLS2

Lumissil MicrosystemsIn Stock: 1418IS31CS8968AG-LQLS2 Datasheet

Current PartRFQ

IS31CS9202-LQLS2

Lumissil MicrosystemsIn Stock: 1172IS31CS9202-LQLS2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IS31CS8968AG-LQLS2 are identified based on functional and electrical equivalence within the Lumissil Microsystems product portfolio. The primary substitution criteria include:

Core Substitution Parameters:

• Manufacturer: Lumissil Microsystems
• Core Processor Architecture: 8051
• Core Size: 8-Bit
• Program Memory Size: 128KB FLASH
• Package Type: 48-LQFP
• Voltage Supply Range: 2.5V ~ 5.5V compatibility
• Connectivity Interfaces: CANbus, I2C, LINbus, SPI, UART/USART support

The IS31CS9202-LQLS2 qualifies as a manufacturer-recommended substitute, maintaining identical core architecture, memory configuration, and package specifications while offering Active product status for continued availability.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Long-Term Production: The IS31CS9202-LQLS2 is the appropriate selection. This part maintains full functional equivalence to the IS31CS8968AG-LQLS2 while offering Active product status, ensuring long-term availability and supply chain stability. Both devices are manufactured by Lumissil Microsystems and share identical core specifications, memory architecture, and package configuration.

For Existing Inventory Management: The IS31CS8968AG-LQLS2 remains available with 1384 units in stock. However, given its Last Time Buy designation, transition planning to the IS31CS9202-LQLS2 is recommended for applications requiring extended production lifecycles.

Compliance Considerations: Both parts maintain ROHS3 compliance and are suitable for applications with equivalent environmental and regulatory requirements. Verification of specific compliance certifications should be conducted based on end-application requirements.

Frequently Asked Questions (FAQ)

Q: Can the IS31CS9202-LQLS2 directly replace the IS31CS8968AG-LQLS2 in existing designs?

A: Yes. Both devices share identical core processor architecture (8051), memory configuration (128KB FLASH), I/O count (42 pins), and 48-LQFP package specifications. Pin-for-pin compatibility is maintained, allowing direct substitution without PCB redesign.

Q: What is the primary difference between these two parts?

A: The IS31CS8968AG-LQLS2 is designated Last Time Buy, indicating end-of-life status. The IS31CS9202-LQLS2 carries Active product status, providing continued manufacturing support and long-term availability.

Q: Are there any electrical parameter differences between the substitute parts?

A: Both parts operate within the same voltage supply range (2.5V ~ 5.5V), support identical connectivity interfaces (CANbus, I2C, LINbus, SPI, UART/USART), and maintain equivalent operating temperature specifications (-40°C ~ 85°C).

Q: What packaging options are available for these microcontrollers?

A: Both the IS31CS8968AG-LQLS2 and IS31CS9202-LQLS2 are supplied in 48-LQFP (7x7) surface mount packages. The main part is available in Tray packaging; substitute part packaging specifications should be verified with the supplier.

Q: Should I transition existing production to the substitute part?

A: Transition to the IS31CS9202-LQLS2 is recommended for applications requiring production continuity beyond the Last Time Buy window of the IS31CS8968AG-LQLS2. Both parts are functionally equivalent, and the transition presents no technical barriers.