TM4C1237E6PMI Equivalent & Substitute Parts

Part Overview

The TM4C1237E6PMI is an ARM® Cortex®-M4F Tiva™ C Series 32-bit microcontroller featuring 128KB FLASH memory, 32KB RAM, and 80MHz clock speed in a 64-LQFP package. This device is currently in Last Time Buy status, making identification of equivalent and substitute parts essential for design continuity and long-term component availability. The part offers comprehensive connectivity options including CANbus, I2C, SPI, UART/USART, and USB OTG, with 43 I/O pins suitable for embedded control applications.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Core Processor	ARM® Cortex®-M4F
Core Size	32-Bit Single-Core
Speed	80MHz
Program Memory Size	128KB (128K x 8) FLASH
RAM Size	32K x 8
EEPROM Size	2K x 8
Number of I/O	43
Voltage Supply Range	1.08V ~ 3.63V
Package Type	64-LQFP (10x10)
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TM4C1237E6PMI is determined by the following critical parameters: ARM® Cortex®-M4F core architecture, 80MHz operating frequency, 64-LQFP package form factor, 43 I/O pin count, 1.08V–3.63V supply voltage range, and -40°C to 85°C operating temperature range.

Two substitute parts are identified:

Direct Equivalent (TM4C1237E6PMI7): Maintains identical electrical specifications, memory configuration (128KB FLASH, 32KB RAM), and package format. The primary distinction is packaging method (Tray vs. Tape & Reel) and product status transition from Last Time Buy to Active.

Manufacturer Recommended Substitute (TM4C123BH6PMIR): Shares the same core processor, clock speed, package, I/O count, and supply voltage specifications. The key difference is increased FLASH memory (256KB vs. 128KB), which represents a superset capability. Additional connectivity includes QEI and Motion PWM peripherals not present in the main part.

Parameter Comparison

Parameter	TM4C1237E6PMI	TM4C1237E6PMI7	TM4C123BH6PMIR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Series	Tiva™ C	Tiva™ C	Tiva™ C
Core Processor	ARM® Cortex®-M4F	ARM® Cortex®-M4F	ARM® Cortex®-M4F
Core Size	32-Bit Single-Core	32-Bit Single-Core	32-Bit Single-Core
Speed	80MHz	80MHz	80MHz
Program Memory Size	128KB FLASH	128KB FLASH	256KB FLASH
RAM Size	32K x 8	32K x 8	32K x 8
EEPROM Size	2K x 8	2K x 8	2K x 8
Number of I/O	43	43	43
Voltage Supply Range	1.08V ~ 3.63V	1.08V ~ 3.63V	1.08V ~ 3.63V
Data Converters	A/D 12x12b	A/D 12x12b	A/D 12x12b
Oscillator Type	Internal	Internal	Internal
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	64-LQFP (10x10)	64-LQFP (10x10)	64-LQFP (10x10)
Packaging Method	Tray	Tray	Tape & Reel
Product Status	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

TM4C1237E6PMI7 is the direct functional equivalent with identical memory and I/O specifications. Selection of this part is appropriate when maintaining exact memory footprint and existing firmware compatibility is required. The transition from Last Time Buy to Active product status provides extended availability and supply chain stability.

TM4C123BH6PMIR is suitable for applications where increased FLASH memory (256KB) provides design margin or enables additional firmware functionality. The additional peripherals (QEI, Motion PWM) expand capability for motion control applications. This part is recommended for new designs or redesigns where the enhanced memory capacity does not introduce cost or form factor constraints. Both substitute parts maintain full electrical and thermal compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can TM4C1237E6PMI7 be used as a direct replacement for TM4C1237E6PMI?

A: Yes. Both parts share identical core processor architecture, clock frequency, memory configuration, I/O count, package form factor, and electrical specifications. The only differences are packaging method (Tray vs. Tray) and product lifecycle status. Existing firmware and PCB layouts require no modification.

Q: What are the implications of using TM4C123BH6PMIR instead of TM4C1237E6PMI?

A: TM4C123BH6PMIR provides 256KB FLASH memory compared to 128KB in the original part. This represents a superset capability suitable for applications requiring larger code space. The identical core processor, clock speed, I/O count, and package ensure pin-for-pin compatibility. Firmware must be verified to operate within the expanded memory space. Additional peripherals (QEI, Motion PWM) are available but not required for basic operation.

Q: Are there packaging considerations when selecting substitute parts?

A: TM4C1237E6PMI and TM4C1237E6PMI7 are supplied in Tray packaging, while TM4C123BH6PMIR is supplied in Tape & Reel format. Tape & Reel packaging is standard for high-volume automated assembly. Tray packaging is suitable for lower-volume or manual assembly processes. PCB footprint and soldering requirements are identical across all three parts.

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

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings (3, 168 Hours). Electrical and thermal operating ranges are identical across all parts.

Q: Which substitute part should be selected for new designs?

A: Selection depends on application requirements. For designs requiring exactly 128KB FLASH memory, TM4C1237E6PMI7 is appropriate. For designs benefiting from increased FLASH capacity or motion control peripherals, TM4C123BH6PMIR is recommended. Both parts offer Active product status, ensuring long-term availability and supply chain support.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message