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Texas Instruments TM4C1237H6PZIR
- Part No.:
- TM4C1237H6PZIR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TM4C1237H6PZIR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TM4C1237H6PZIR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB Flash, 32 KB SRAM, and integrated USB 2.0 OTG, CAN, 8×PWM, 12-bit ADC (1MSPS), and hibernation module. It operates at up to 80 MHz and supports industrial temperature range (–40°C to +105°C) in a 100-pin LQFP package. It serves as the main system controller in motor control, industrial automation, and smart sensor nodes.
For engineers reviewing the TM4C1237H6PZIR datasheet, TM4C1237H6PZIR pinout, TM4C1237H6PZIR application, or TM4C1237H6PZIR equivalent, key selection considerations include its integrated USB PHY, dual CAN interfaces, hibernation-optimized power management, and TivaWare™ software support for rapid firmware development on resource-constrained embedded systems.
Technical Context
The TM4C1237H6PZIR integrates an ARM Cortex-M4F core with hardware floating-point unit (FPU), enabling deterministic real-time signal processing and control loop execution. Its memory subsystem includes 256 KB on-chip Flash with ECC protection, 32 KB SRAM, and 2 KB EEPROM - all accessible via tightly coupled bus architecture with zero-wait-state operation at 80 MHz.
Peripherals are organized around a hierarchical AHB/APB bridge with configurable clock gating and power domains. The device features two independent CAN 2.0B controllers, one USB 2.0 OTG controller with integrated PHY, eight 16/32-bit general-purpose timers (including RTC and watchdog), and a 12-channel, 12-bit ADC with hardware averaging and digital comparators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F with FPU - enables single-cycle DSP instructions and IEEE-754 compliant floating-point math for motor control and sensor fusion. |
| Max Clock Speed | 80 MHz - delivers 100+ DMIPS performance while maintaining low dynamic power consumption in active mode. |
| Flash / SRAM / EEPROM | 256 KB / 32 KB / 2 KB - sufficient for bootloader, application code, runtime variables, and nonvolatile configuration storage without external memory. |
| ADC | 12-bit, 1 MSPS, 12-channel - supports simultaneous sampling across multiple analog inputs for closed-loop feedback in motor drives. |
| Communication Interfaces | 2×CAN 2.0B, 1×USB 2.0 OTG (with PHY), 8×UART, 4×SPI, 4×I²C - enables robust fieldbus connectivity and host/device USB functionality in one chip. |
| Power Management | Hibernate mode with RTC & battery-backed RAM - draws ≤1.6 µA typical, enabling multi-year battery life in remote monitoring applications. |
| Package & Temp Range | 100-pin LQFP (14 × 14 mm), –40°C to +105°C - suitable for industrial control panels and automotive under-hood environments. |
Pinout & Package
TM4C1237H6PZIR is housed in a 100-pin LQFP (PZ) package with exposed thermal pad. Pin functions are defined per TI SPMS362E datasheet Rev E (June 2014), including dedicated JTAG/SWD debug pins, USB D+/D–, CANH/CANL, and multiplexed GPIOs supporting peripheral remapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Supply rails | VDD (digital core), VDDA (analog), VDDC (USB PHY) - require separate filtering; VDDC must be 3.3 V ±5% for USB compliance. |
| USB0DP / USB0DM | USB 2.0 differential pair | Integrated PHY eliminates need for external transceiver; supports full-speed (12 Mbps) and OTG host/device roles. |
| CAN0RX / CAN0TX CAN1RX / CAN1TX |
CAN bus interface | Dual independent CAN controllers with message objects and FIFOs - enable redundant bus communication or multi-network gateway design. |
| PD0 / PD1 | UART0 I/O | Default UART0 pins; also support I²C0 SCL/SDA or timer capture - allow flexible peripheral assignment without PCB redesign. |
| PF0–PF4 | NMI / User I/O / SW2 | Multi-function pins including NMI input, user pushbutton input (SW2), and ADC channel 18 - simplify board-level reset and diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 OTG PHY | Eliminates external transceiver, reduces BOM cost and layout area, and enables direct connection to PC/host or peripheral devices. |
| Dual CAN 2.0B Controllers | Supports concurrent CAN FD-ready networks (via software upgrade) and enables gateway or diagnostic tool implementations without external CAN controllers. |
| Hibernate Module with RTC & Battery Backup | Retains 2 KB of RAM and maintains timekeeping at ≤1.6 µA - critical for energy-harvesting and battery-powered edge nodes. |
| TivaWare™ Peripheral Driver Library | Production-ready C APIs for all peripherals - accelerates firmware development and ensures register-level correctness across TM4C family variants. |
| ROM Bootloader with In-Application Programming (IAP) | Enables field firmware updates over UART, USB, or CAN without external programmer - simplifies maintenance and security patching. |
Applications
| Industrial Motor Control | Smart Building Sensor Hub |
|---|---|
|
Use Scenario: Closed-loop control of BLDC/PMSM motors using space-vector PWM and current sensing. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing gate drivers, and communicating via CAN to master PLC. Use Value: Integrated 12-bit ADC with hardware averaging and 8×PWM channels reduce external component count and timing jitter in high-resolution current sampling. |
Use Scenario: Multi-sensor aggregation (temp, humidity, CO₂, occupancy) with local analytics and wireless backhaul. IC Role / Device Role / Timing Role: Edge processing node performing sensor fusion, event detection, and USB/UART bridging to Wi-Fi or LoRa modules. Use Value: Hibernate mode with RTC wake-up and battery-backed RAM preserves state during power loss, enabling reliable recovery after brownouts. |
| Automotive Diagnostic Tool | Programmable Logic Controller (PLC) I/O Module |
|
Use Scenario: Handheld OBD-II scanner interfacing with vehicle ECUs via CAN and displaying data on LCD. IC Role / Device Role / Timing Role: USB host for display interface and dual-CAN controller for simultaneous communication with powertrain and body control modules. Use Value: On-chip USB PHY and dual CAN controllers eliminate discrete transceivers, reducing size and EMI risk in portable tools. |
Use Scenario: DIN-rail mounted I/O expansion module accepting digital/analog inputs and driving relay outputs. IC Role / Device Role / Timing Role: Real-time I/O manager with deterministic interrupt latency, isolated communication via RS-485 (UART) and CAN backbone. Use Value: 100-pin LQFP provides ample GPIOs and peripheral flexibility; industrial temp rating ensures reliability in factory-floor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C1294NCPDT | ARM Cortex-M4F @ 120 MHz, 1 MB Flash, 256 KB SRAM, integrated Ethernet MAC + PHY, no CAN, larger 128-pin BGA package. | Better suited for Ethernet-connected HMI or gateway applications; lacks CAN and hibernation-optimized power modes. | Select when Ethernet connectivity and higher memory capacity outweigh CAN requirement and low-power hibernation needs. |
| STM32H743VIT6 | ARM Cortex-M7 @ 480 MHz, 2 MB Flash, 1 MB RAM, no integrated USB PHY, requires external transceiver, no hibernation module, –40°C to +85°C rating. | Higher compute throughput for AI inference or video preprocessing; less optimized for ultra-low-power sleep and CAN-based fieldbus integration. | Choose for compute-intensive tasks where USB PHY integration and sub-µA hibernate are secondary to raw performance and memory headroom. |
Compared with TM4C1237H6PZIR, TM4C1294NCPDT trades CAN and hibernation for Ethernet and memory scale, while STM32H743VIT6 offers higher CPU speed but demands external USB components and lacks industrial-grade low-power retention - making TM4C1237H6PZIR uniquely balanced for CAN-based, battery-aware industrial control.
Availability
TM4C1237H6PZIR is available at Aetrix Electronics and suitable for industrial motor control, smart building sensor hubs, and automotive diagnostic tools requiring stable component supply, long-term lifecycle support, and qualified industrial temperature grade operation.
Supply support for TM4C1237H6PZIR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity solutions, with decades of experience in industrial, automotive, and communications markets.
The TM4C1237H6PZIR belongs to TI's Tiva C Series microcontroller line, designed specifically for cost-sensitive, real-time embedded applications demanding integrated analog, connectivity (CAN/USB), and ultra-low-power operation in harsh environments.
FAQ
What is the maximum operating frequency of the TM4C1237H6PZIR?
The TM4C1237H6PZIR operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with an external crystal or precision oscillator. This frequency enables deterministic execution of real-time control algorithms and supports full-speed USB 2.0 (12 Mbps) and CAN 2.0B communication without timing violations. The TM4C1237H6PZIR maintains this speed across its full industrial temperature range (–40°C to +105°C).
Does the TM4C1237H6PZIR include an integrated USB physical layer (PHY)?
Yes, the TM4C1237H6PZIR integrates a full-speed USB 2.0 OTG PHY, eliminating the need for an external transceiver. This allows direct connection to USB hosts or peripherals using only standard series resistors and proper PCB layout for D+ and D– lines. The TM4C1237H6PZIR supports both device and host modes, and its ROM bootloader enables firmware updates via USB without additional programming hardware.
How much on-chip memory does the TM4C1237H6PZIR provide?
The TM4C1237H6PZIR includes 256 KB of on-chip Flash memory with error-correcting code (ECC), 32 KB of SRAM, and 2 KB of EEPROM. The Flash supports in-application programming (IAP) and secure boot; the EEPROM provides byte-erasable nonvolatile storage for calibration data or configuration parameters. All memory blocks are accessible at zero wait states up to 80 MHz, ensuring predictable real-time performance in the TM4C1237H6PZIR.
What low-power modes are supported by the TM4C1237H6PZIR?
The TM4C1237H6PZIR supports multiple low-power modes including Sleep, Deep-Sleep, and Hibernate. Hibernate mode draws as little as 1.6 µA typical while retaining RTC operation and 2 KB of battery-backed RAM. Wake-up sources include external pins, RTC alarm, and CAN activity. This makes the TM4C1237H6PZIR ideal for battery-powered edge nodes where multi-year operation is required without compromising system state retention.
Is the TM4C1237H6PZIR pin-compatible with other TM4C123x devices?
The TM4C1237H6PZIR shares the same 100-pin LQFP (PZ) package and pinout with other TM4C123x variants in the same package option, including TM4C123GH6PZ and TM4C123BH6PZ. However, feature availability (e.g., USB, CAN count, ADC resolution) varies between part numbers - so while PCB layout is reusable, firmware and peripheral initialization must be verified per specific variant. The TM4C1237H6PZIR is not pin-compatible with TM4C129x or TM4C121x families.
TM4C1237H6PZIR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Tiva™ C
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4F
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, WDT
- Number of I/O:
- 69
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.08V ~ 3.63V
- Data Converters:
- A/D 24x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1237H6PZIR FAQ
1.How can I place an order for TM4C1237H6PZIR through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1237H6PZIR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TM4C1237H6PZIR reliable?
The price and inventory of TM4C1237H6PZIR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1237H6PZIR is usually 5 days.
3.What payment methods are accepted for TM4C1237H6PZIR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1237H6PZIR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1237H6PZIR?
TM4C1237H6PZIR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1237H6PZIR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TM4C1237H6PZIR?
For technical support, including TM4C1237H6PZIR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1237H6PZIR requirements.
6.How does Aetrix verify that TM4C1237H6PZIR is sourced from the original manufacturer or authorized distributors?
All TM4C1237H6PZIR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TM4C1237H6PZIR meets industry standards.
7.What is the process for return or replacement of TM4C1237H6PZIR?
All TM4C1237H6PZIR units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1237H6PZIR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TM4C1237H6PZIR part is unused and in its original packaging.
Return procedure for TM4C1237H6PZIR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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