TM4C1237D5PZIR Equivalent & Substitute Parts

Part Overview

The TM4C1237D5PZIR is an ARM Cortex-M4F Tiva C Series 32-bit microcontroller featuring 64KB FLASH memory, operating at 80MHz with integrated connectivity options including CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, and USB OTG. The device is packaged in a 100-LQFP (14x14mm) surface mount configuration. This part is currently in Last Time Buy status, making identification of equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

TM4C1237D5PZIR

Texas InstrumentsIn Stock: 1206TM4C1237D5PZIR Datasheet

Current PartRFQ

TM4C123BH6PZIR

Texas InstrumentsIn Stock: 3358TM4C123BH6PZIR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TM4C1237D5PZIR is determined by the following critical parameters: identical core processor architecture (ARM Cortex-M4F), matching core size (32-Bit Single-Core), identical operating speed (80MHz), compatible package type (100-LQFP 14x14mm), matching supply voltage range (1.08V ~ 3.63V), identical I/O count (69), and overlapping operating temperature range (-40°C ~ 85°C).

The TM4C123BH6PZIR qualifies as a manufacturer-recommended substitute. While this part features increased FLASH memory (256KB versus 64KB) and expanded RAM (32K x 8 versus 24K x 8), it maintains all critical compatibility parameters: identical processor core, speed, package, voltage specifications, I/O configuration, and temperature range. The enhanced memory capacity represents a functional upgrade path rather than a limitation.

Parameter Comparison

Engineering Selection Recommendations

The TM4C123BH6PZIR is the manufacturer-recommended substitute for the TM4C1237D5PZIR. Selection of this alternative is supported by: (1) Active product status versus Last Time Buy status of the original part, ensuring long-term availability and supply chain continuity; (2) Identical RoHS3 compliance and REACH unaffected status, maintaining regulatory alignment; (3) Identical MSL rating (3, 168 Hours), preserving moisture sensitivity handling requirements; (4) Identical core architecture, speed, package, voltage specifications, and I/O configuration, ensuring direct functional compatibility; (5) Enhanced memory specifications (256KB FLASH and 32K x 8 RAM) providing additional design headroom without introducing compatibility constraints.

Frequently Asked Questions (FAQ)

Q: Can the TM4C123BH6PZIR be used as a direct replacement for the TM4C1237D5PZIR in existing designs?

A: Yes. Both devices share identical core processor architecture (ARM Cortex-M4F), operating speed (80MHz), package type (100-LQFP 14x14mm), supply voltage range (1.08V ~ 3.63V), I/O count (69), and operating temperature range (-40°C ~ 85°C). The increased FLASH memory (256KB versus 64KB) and RAM (32K x 8 versus 24K x 8) in the substitute part do not introduce compatibility issues.

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

A: The primary differences are program memory capacity (64KB versus 256KB FLASH) and RAM size (24K x 8 versus 32K x 8). The TM4C123BH6PZIR also includes Motion PWM and QEI peripherals not listed for the TM4C1237D5PZIR. The substitute part maintains identical electrical and mechanical specifications for all other parameters.

Q: Are there any package or pinout differences?

A: No. Both parts use the 100-LQFP (14x14mm) package with identical pinout and 69 I/O pins.

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

A: The TM4C1237D5PZIR is in Last Time Buy status, indicating limited future availability. The TM4C123BH6PZIR is in Active status, ensuring ongoing supply and support from Texas Instruments.

Q: Are compliance certifications identical?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings (3, 168 Hours).