IS31CS8967AG-LQLS2 Equivalent & Substitute Parts

Part Overview

The IS31CS8967AG-LQLS2 is an 8-bit microcontroller IC manufactured by Lumissil Microsystems, featuring 128KB FLASH program memory, 6KB RAM, and a 24MHz core processor. This device integrates multiple communication interfaces (I2C, LINbus, SPI, UART/USART) and peripheral functions including LCD driver, low voltage detection, PWM, and watchdog timer capabilities. The component is housed in a 48-LQFP (7x7mm) surface mount package.

The IS31CS8967AG-LQLS2 is designated as Last Time Buy, indicating that this part number will no longer be manufactured. Identification of equivalent substitute parts is necessary to ensure continued design support, procurement availability, and long-term product lifecycle management.

Substiute Parts

IS31CS8967AG-LQLS2

Lumissil MicrosystemsIn Stock: 770IS31CS8967AG-LQLS2 Datasheet

Current PartRFQ

IS31CS9202-LQLS2

Lumissil MicrosystemsIn Stock: 1172IS31CS9202-LQLS2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IS31CS8967AG-LQLS2 is determined by equivalence across the following critical parameters:

Core Architecture & Performance: The substitute part must maintain the same 8051 core processor architecture, 8-bit core size, and 24MHz operating frequency to ensure firmware compatibility and performance characteristics.

Memory Configuration: Program memory must remain 128KB FLASH with identical 6K x 8 RAM configuration to support existing firmware images and runtime memory requirements.

Electrical Specifications: Supply voltage range (2.5V ~ 5.5V), analog converter specifications (14x12-bit A/D, 1x10-bit D/A), and operating temperature range (-40°C ~ 85°C) must be maintained.

Interface & Peripheral Set: Communication interfaces (I2C, LINbus, SPI, UART/USART) and peripheral functions (LCD, LVD, LVR, POR, PWM, WDT) must be present to maintain functional compatibility.

Package & Form Factor: The 48-LQFP (7x7mm) surface mount package is required for PCB layout compatibility.

Compliance & Certifications: RoHS3 compliance and MSL rating must be equivalent or superior to support manufacturing and storage requirements.

Parameter Comparison

Engineering Selection Recommendations

The IS31CS9202-LQLS2 is the manufacturer-recommended substitute for the IS31CS8967AG-LQLS2. Both parts are manufactured by Lumissil Microsystems and maintain identical electrical, functional, and package specifications across all critical parameters.

Product Status Consideration: The IS31CS8967AG-LQLS2 carries Last Time Buy status, indicating end-of-life production. The IS31CS9202-LQLS2 maintains Active product status, ensuring continued availability, manufacturing support, and long-term supply chain stability.

Compliance & Certification Equivalence: Both parts maintain ROHS3 compliance and identical MSL rating (3, 168 Hours), supporting equivalent manufacturing, storage, and handling requirements.

Functional Compatibility: Complete parameter equivalence across core processor architecture, memory configuration, operating frequency, supply voltage range, communication interfaces, analog converters, I/O count, and peripheral functions ensures direct functional substitution without firmware modification or PCB redesign.

Inventory & Availability: The IS31CS9202-LQLS2 maintains higher inventory levels (1127 Pcs) compared to the main part (710 Pcs), supporting immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the IS31CS9202-LQLS2 be used as a direct replacement for the IS31CS8967AG-LQLS2 without firmware changes?

A: Yes. Both parts maintain identical 8051 core processor architecture, 24MHz operating frequency, 128KB FLASH program memory, 6KB RAM, and all communication interfaces and peripheral functions. Existing firmware requires no modification.

Q: Are the package dimensions and pinout identical between these parts?

A: Yes. Both parts use the 48-LQFP (7x7mm) surface mount package with identical pinout and I/O configuration (42 I/O pins). PCB layout and footprint remain unchanged.

Q: What is the significance of the Last Time Buy status on the IS31CS8967AG-LQLS2?

A: Last Time Buy designation indicates that the IS31CS8967AG-LQLS2 will no longer be manufactured after existing inventory is depleted. The IS31CS9202-LQLS2 maintains Active status, ensuring continued production and long-term availability.

Q: Are the supply voltage specifications identical?

A: Yes. Both parts operate across the 2.5V to 5.5V supply voltage range, supporting identical power supply designs and circuit configurations.

Q: Do both parts meet the same compliance and certification requirements?

A: Yes. Both parts are ROHS3 compliant with identical MSL rating (3, 168 Hours), supporting equivalent manufacturing processes, storage conditions, and handling procedures.

Q: Are the analog converter specifications identical?

A: Yes. Both parts feature 14-channel 12-bit SAR analog-to-digital converter and 1-channel 10-bit digital-to-analog converter with identical specifications.

Q: What communication interfaces are supported by both parts?

A: Both parts support I2C, LINbus, SPI, and UART/USART communication interfaces with identical functional specifications.