MSP430F5438AIPZ Equivalent & Substitute Parts

Part Overview

The MSP430F5438AIPZ is a 16-bit microcontroller from Texas Instruments' MSP430F5xx series, featuring 256KB FLASH program memory, 16KB RAM, and integrated connectivity interfaces including I2C, SPI, UART/USART, IrDA, and LINbus. The device operates at 25MHz with a supply voltage range of 1.8V to 3.6V and is housed in a 100-LQFP surface mount package. This part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical specifications are met within the MSP430F5xx family, enabling design flexibility and supply chain alternatives.

Substiute Parts

MSP430F5438AIPZ

Texas InstrumentsIn Stock: 10486MSP430F5438AIPZ Datasheet

Current PartRFQ

MSP430F5438IPZ

Texas InstrumentsIn Stock: 2273MSP430F5438IPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MSP430F5438AIPZ is determined by strict alignment of the following electrical and mechanical parameters:

• Core processor architecture (MSP430 CPUXV2)
• Core size (16-Bit)
• Program memory capacity (256KB FLASH)
• RAM capacity (16K x 8)
• Package type and pin count (100-LQFP)
• Mounting type (Surface Mount)
• Operating temperature range (-40°C ~ 85°C)
• Connectivity interfaces (I2C, IrDA, LINbus, SCI, SPI, UART/USART)
• Peripheral set (Brown-out Detect/Reset, DMA, POR, PWM, WDT)
• Data converter specifications (A/D 16x12b)
• Compliance certifications (ROHS3, REACH Unaffected)

The MSP430F5438IPZ qualifies as a substitute based on matching all core electrical and mechanical parameters. Variations in maximum operating speed (25MHz vs. 18MHz) and minimum supply voltage (1.8V vs. 2.2V) do not disqualify substitution when the application requirements fall within the substitute's operational envelope.

Parameter Comparison

Engineering Selection Recommendations

The MSP430F5438AIPZ is the preferred selection for new designs due to its Active product status and extended operational capabilities. The MSP430F5438IPZ is classified as Not For New Designs and should be considered only for legacy system maintenance, repair, or replacement scenarios where supply constraints on the primary part necessitate an alternative.

Both parts maintain identical ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment. The MSP430F5438IPZ operates within a narrower supply voltage range (2.2V minimum versus 1.8V minimum) and at a reduced maximum clock speed (18MHz versus 25MHz). Applications requiring operation below 2.2V supply voltage or sustained 25MHz performance must use the MSP430F5438AIPZ.

Frequently Asked Questions (FAQ)

Q: Can MSP430F5438IPZ replace MSP430F5438AIPZ in all applications?

A: Substitution is valid only when the application's supply voltage requirement is 2.2V or higher and maximum clock speed requirement does not exceed 18MHz. Both parts share identical memory capacity, I/O count, peripheral set, and package specifications. Applications requiring 1.8V operation or 25MHz performance must use MSP430F5438AIPZ.

Q: Are the pin configurations identical between these parts?

A: Yes. Both parts use the 100-LQFP (14x14) package with 87 I/O pins and identical peripheral mapping. PCB layout and schematic designs are directly compatible.

Q: What is the significance of the product status difference?

A: MSP430F5438AIPZ maintains Active status, indicating ongoing manufacturing support and suitability for new product designs. MSP430F5438IPZ is classified as Not For New Designs, meaning Texas Instruments does not recommend its use in new development. This part remains available for existing applications but should not be selected for new projects.

Q: Are there compliance or certification differences?

A: No. Both parts are ROHS3 compliant and REACH Unaffected. Moisture sensitivity level (MSL 3, 168 hours) is identical. No regulatory or environmental compliance advantage exists between the two parts.

Q: What is the practical impact of the 7MHz speed difference?

A: The MSP430F5438IPZ operates at a maximum of 18MHz compared to 25MHz for MSP430F5438AIPZ. This affects maximum throughput for computationally intensive tasks. Applications with timing-critical operations or high-speed data processing should verify that 18MHz performance meets functional requirements before substitution.