TM4C1237H6PZIR Equivalent & Substitute Parts

Part Overview

The TM4C1237H6PZIR is an ARM Cortex-M4F Tiva C Series 32-bit microcontroller manufactured by Texas Instruments. This embedded IC operates at 80MHz with 256KB FLASH program memory, 32KB RAM, and 2KB EEPROM, housed in a 100-LQFP surface mount package. The device integrates comprehensive connectivity options including CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, and USB OTG interfaces. With an active product status and ROHS3 compliance, this microcontroller serves applications requiring robust embedded processing with extensive peripheral support. Substitute parts are identified to address inventory availability and supply chain continuity while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Core Processor	ARM Cortex-M4F
Core Size	32-Bit Single-Core
Speed	80MHz
Program Memory Size	256KB (256K x 8) FLASH
RAM Size	32K x 8
EEPROM Size	2K x 8
Number of I/O	69
Voltage Supply (Vcc/Vdd)	1.08V ~ 3.63V
Data Converters	A/D 24x12b
Connectivity	CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG
Peripherals	Brown-out Detect/Reset, DMA, POR, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	100-LQFP (14x14)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

The TM4C1237H6PZI7R qualifies as a direct substitute for the TM4C1237H6PZIR based on identical electrical and mechanical specifications. Substitution is valid when the following parameters match exactly:

Core processor architecture: ARM Cortex-M4F
Core size and speed: 32-Bit Single-Core at 80MHz
Memory configuration: 256KB FLASH, 32KB RAM, 2KB EEPROM
I/O count: 69 pins
Connectivity interfaces: CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG
Peripheral features: Brown-out Detect/Reset, DMA, POR, WDT
Data converter specification: A/D 24x12b
Voltage supply range: 1.08V ~ 3.63V
Operating temperature range: -40°C ~ 85°C
Package specification: 100-LQFP (14x14)
Compliance certifications: ROHS3, REACH Unaffected

Parameter Comparison

Parameter	TM4C1237H6PZIR	TM4C1237H6PZI7R	Match
Manufacturer	Texas Instruments	Texas Instruments	Yes
Core Processor	ARM Cortex-M4F	ARM Cortex-M4F	Yes
Core Size	32-Bit Single-Core	32-Bit Single-Core	Yes
Speed	80MHz	80MHz	Yes
Program Memory Size	256KB (256K x 8) FLASH	256KB (256K x 8) FLASH	Yes
RAM Size	32K x 8	32K x 8	Yes
EEPROM Size	2K x 8	2K x 8	Yes
Number of I/O	69	69	Yes
Voltage Supply (Vcc/Vdd)	1.08V ~ 3.63V	1.08V ~ 3.63V	Yes
Data Converters	A/D 24x12b	A/D 24x12b	Yes
Connectivity	CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG	CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG	Yes
Peripherals	Brown-out Detect/Reset, DMA, POR, WDT	Brown-out Detect/Reset, DMA, POR, WDT	Yes
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	Yes
Package / Case	100-LQFP (14x14)	100-LQFP (14x14)	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	Yes
Product Status	Active	Active	Yes

Engineering Selection Recommendations

Both the TM4C1237H6PZIR and TM4C1237H6PZI7R are active products from Texas Instruments with identical electrical specifications and mechanical packaging. Selection between these parts is based on inventory availability and supply chain requirements. The TM4C1237H6PZI7R currently maintains higher inventory levels (2104 pieces) compared to the TM4C1237H6PZIR (894 pieces), making it suitable for applications requiring extended lead time assurance. Both parts carry ROHS3 compliance and REACH Unaffected status, meeting regulatory requirements for industrial and commercial applications. The identical MSL rating of 3 (168 Hours) ensures equivalent moisture handling and storage requirements. No functional or performance differences exist between these parts; selection is determined by procurement and logistics considerations.

Frequently Asked Questions (FAQ)

Q: Are TM4C1237H6PZIR and TM4C1237H6PZI7R pin-compatible?

A: Yes. Both parts use the 100-LQFP (14x14) package with identical pin assignments and 69 I/O pins. Direct PCB layout compatibility is confirmed.

Q: Can TM4C1237H6PZI7R replace TM4C1237H6PZIR in existing designs?

A: Yes. All electrical parameters, memory configurations, connectivity interfaces, and operating characteristics are identical. No design modifications are required.

Q: What is the difference between these part numbers?

A: The part numbers differ only in their suffix designation (PZIR versus PZI7R). This suffix typically indicates manufacturing date code or internal Texas Instruments tracking. Electrical and functional specifications remain identical.

Q: Are the voltage supply ranges identical?

A: Yes. Both parts operate within the same voltage supply range of 1.08V ~ 3.63V (Vcc/Vdd).

Q: Do both parts support the same connectivity interfaces?

A: Yes. Both TM4C1237H6PZIR and TM4C1237H6PZI7R include identical connectivity: CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, and USB OTG.

Q: Are the memory specifications identical?

A: Yes. Both parts feature 256KB FLASH program memory, 32KB RAM, and 2KB EEPROM with identical access specifications.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -40°C to 85°C (TA), suitable for industrial and extended temperature applications.

Q: Are there any compliance differences?

A: No. Both parts are ROHS3 compliant and REACH Unaffected with identical Moisture Sensitivity Level (MSL) ratings of 3 (168 Hours).

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