MSP430F1121IPWR Equivalent & Substitute Parts

Part Overview

The MSP430F1121IPWR is a 16-bit microcontroller from Texas Instruments' MSP430x1xx series, featuring 4KB of FLASH program memory, 256 bytes of RAM, and 14 I/O pins. This device operates at 8MHz with a supply voltage range of 1.8V to 3.6V and is housed in a 20-TSSOP surface mount package.

The MSP430F1121IPWR carries a "Not For New Designs" product status, indicating it has been superseded. Identifying equivalent substitute parts is necessary for applications requiring continued component availability, design updates, or inventory optimization while maintaining functional compatibility.

Substiute Parts

MSP430F1121IPWR

Texas InstrumentsIn Stock: 2756MSP430F1121IPWR Datasheet

Current PartRFQ

MSP430F1121AIPWR

Texas InstrumentsIn Stock: 3687MSP430F1121AIPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSP430F1121IPWR is determined by strict equivalence across the following critical parameters:

• Core Processor Architecture: MSP430 CPU16
• Memory Configuration: 4KB FLASH program memory with 256 bytes RAM
• I/O Count: 14 pins
• Operating Frequency: 8MHz
• Supply Voltage Range: 1.8V ~ 3.6V
• Package Type: 20-TSSOP with identical physical dimensions
• Thermal Range: -40°C ~ 85°C

The MSP430F1121AIPWR meets all these criteria and qualifies as a direct substitute. Both devices share identical electrical specifications, memory architecture, and pinout configuration within the 20-TSSOP package.

Parameter Comparison

Engineering Selection Recommendations

The MSP430F1121AIPWR is the direct substitute for the MSP430F1121IPWR. The primary distinction between these parts is product lifecycle status: the original MSP430F1121IPWR is designated "Not For New Designs," while the MSP430F1121AIPWR carries "Active" status.

Both devices maintain identical electrical performance, memory architecture, and package specifications. The MSP430F1121AIPWR is recommended for new applications and ongoing production due to its active product status and verified programmability certification. For existing designs currently using the MSP430F1121IPWR, the MSP430F1121AIPWR provides seamless functional replacement with no circuit modifications required.

Both parts comply with ROHS3 and REACH regulations, ensuring regulatory alignment for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the MSP430F1121AIPWR directly replace the MSP430F1121IPWR in existing designs?

A: Yes. Both devices share identical core processor architecture, memory configuration, I/O count, operating frequency, supply voltage range, and 20-TSSOP package dimensions. No circuit modifications are required for substitution.

Q: What is the significance of the "Not For New Designs" status on the MSP430F1121IPWR?

A: This designation indicates the part has been superseded in the product lifecycle. While existing inventory may remain available, Texas Instruments recommends the MSP430F1121AIPWR for new applications. The MSP430F1121AIPWR carries "Active" status, ensuring continued support and availability.

Q: Are there packaging differences between these parts?

A: Both the MSP430F1121IPWR and MSP430F1121AIPWR are supplied in 20-TSSOP packages with identical physical dimensions (0.173" width, 4.40mm). The original part is available in Tape & Reel (TR) packaging, while the substitute is available in Cut Tape (CT) and Digi-Reel® formats. These packaging options do not affect electrical or mechanical compatibility.

Q: Do both parts meet current compliance standards?

A: Yes. Both the MSP430F1121IPWR and MSP430F1121AIPWR are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is 1 (Unlimited) for both devices.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on matching core processor (MSP430 CPU16), memory size (4KB FLASH, 256 bytes RAM), I/O count (14), operating frequency (8MHz), supply voltage range (1.8V ~ 3.6V), package type (20-TSSOP), and thermal operating range (-40°C ~ 85°C).