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Texas Instruments TM4C1237H6PGEI
- Part No.:
- TM4C1237H6PGEI
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
TM4C1237H6PGEI.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,800
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Product details
Overview
TM4C1237H6PGEI from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB Flash, 32 KB SRAM, and integrated USB 2.0 OTG, 12-bit ADC (1MSPS), and dual CAN 2.0A/B controllers - deployed in industrial motor control, smart sensor nodes, and USB-connected embedded gateways.
For engineers reviewing the TM4C1237H6PGEI datasheet, TM4C1237H6PGEI pinout, TM4C1237H6PGEI application, or TM4C1237H6PGEI equivalent, key selection criteria include its 80 MHz operation, hibernation module with RTC and battery-backed memory, 48-pin LQFP package, and TivaWare™ software support for rapid firmware development.
Technical Context
The TM4C1237H6PGEI integrates a single-core ARM Cortex-M4F CPU with hardware floating-point unit (FPU) and NVIC supporting up to 80 interrupts. It features a deterministic 80 MHz system clock derived from internal PLL, with multiple low-power modes (Sleep, Deep Sleep, Hibernate) enabled by dedicated power control logic and hibernation module.
Peripherals include two CAN controllers compliant with ISO 11898-1:2003, four UARTs (one with IrDA and ISO 7816 support), two I²C modules, three SPI interfaces, and a 12-channel μDMA controller - all mapped to GPIOs via flexible peripheral multiplexing and commit registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with FPU - enables real-time signal processing and floating-point math without external coprocessor. |
| Memory | 256 KB Flash + 32 KB SRAM + 2 KB EEPROM - supports firmware updates in-place and nonvolatile parameter storage. |
| ADC | 12-bit, 1 MSPS, 12-channel SAR ADC with hardware averaging - suitable for precision analog sensing in noisy industrial environments. |
| Connectivity | USB 2.0 OTG, dual CAN 2.0A/B, 4× UART, 2× I²C, 3× SPI - enables mixed-protocol communication in automotive diagnostics and factory automation. |
| Power Modes | Hibernate mode draws 1.7 µA (RTC active); Deep Sleep draws 3.5 µA - extends battery life in remote monitoring nodes. |
| Package | 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) - compatible with standard PCB assembly processes and thermal management for industrial ambient (–40°C to +105°C). |
| Temperature Range | –40°C to +105°C - qualified for extended-temperature industrial and automotive under-hood applications. |
Pinout & Package
TM4C1237H6PGEI is housed in a 48-pin LQFP (PGE) package with exposed thermal pad, rated for industrial temperature range (–40°C to +105°C). Pin assignments follow TI's standardized Tiva C Series pin mapping, with full GPIO remapping capability per peripheral function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Supply rails | Digital core (VDD), analog (VDDA), and USB PHY (VDDC) are independently decoupled - critical for noise isolation in mixed-signal operation. |
| GND, GNDA | Ground references | Digital and analog grounds separated to minimize coupling between high-speed logic and sensitive ADC inputs. |
| USB0VBUS, USB0ID | USB OTG interface | Supports host/peripheral role detection and VBUS sensing - required for USB On-The-Go functionality in field-programmable devices. |
| CAN0RX, CAN0TX | CAN 2.0A/B transceiver interface | Dedicated differential pair pins with internal pull-ups - eliminates need for external termination resistors on controller side. |
| PD0–PD7, PE0–PE5 | GPIO bank D/E | Configurable as digital I/O, timer capture/compare, or UART/I²C/SPI signals - enables flexible board-level peripheral routing. |
| HIB, RTCCLK, HIBRST | Hibernation module control | Direct connection to external battery and 32.768 kHz crystal - enables autonomous wake-up and timekeeping during ultra-low-power sleep. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware-accelerated IEEE 754 single-precision math - reduces cycle count for motor control algorithms and sensor fusion. |
| Hibernation Module | Integrated RTC, battery-backed RAM (2 KB), and wake-on-external-interrupt - sustains time-critical state across main power loss. |
| Peripheral Multiplexing | Each GPIO pin supports ≥3 alternate functions via commit register - simplifies PCB layout and enables runtime reconfiguration. |
| USB 2.0 OTG Controller | Full-speed (12 Mbps) device/host/OTG with integrated PHY - eliminates external transceiver and reduces BOM cost in USB-enabled edge devices. |
| Dual CAN Controllers | Independent CAN0/CAN1 with message objects, FIFOs, and loopback test mode - supports redundant bus architectures in safety-critical systems. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC actuators using PWM outputs and current feedback via ADC. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithm with sub-microsecond interrupt latency and synchronized PWM/ADC triggering. Use Value: 80 MHz Cortex-M4F + FPU delivers >2× faster vector math vs. M3-class MCUs, enabling higher PWM resolution and tighter current regulation. | Use Scenario: Battery-powered environmental sensor hub collecting temperature, humidity, and CO₂ data, then transmitting over CAN or USB. IC Role / Device Role / Timing Role: Low-power coordinator managing sensor sampling, local data fusion, and protocol translation between analog sensors and industrial buses. Use Value: Hibernate mode at 1.7 µA preserves 10+ year battery life while maintaining RTC accuracy and wake-on-event responsiveness. |
| Automotive Diagnostic Tool | USB-Connected Embedded Gateway |
Use Scenario: Handheld OBD-II scanner interfacing with vehicle ECUs via CAN and displaying diagnostics on LCD via parallel interface. IC Role / Device Role / Timing Role: Protocol bridge translating SAE J1939/ISO 15765 messages between CAN bus and human interface peripherals. Use Value: Dual CAN controllers allow simultaneous access to powertrain and chassis networks without arbitration delay or external multiplexer. | Use Scenario: Industrial gateway aggregating Modbus RTU data from legacy PLCs and exposing it via USB CDC ACM to host PC or cloud agent. IC Role / Device Role / Timing Role: USB device endpoint handling bulk transfers while concurrently managing UART-to-USB bridging with zero-copy DMA. Use Value: Integrated USB PHY and μDMA eliminate external USB IC and reduce latency to <50 µs for real-time command-response cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB Flash, no integrated USB PHY - requires external transceiver for full-speed USB. | Higher performance but larger footprint (100-pin LQFP); lacks hibernation module and battery-backed RTC. | Preferred when raw compute throughput and large code size dominate over ultra-low-power sleep and USB integration. |
| MSP432P401RIPZT | ARM Cortex-M4F @ 48 MHz, 2 MB Flash, integrated AES accelerator - lower max frequency, no CAN, USB only device-mode. | Optimized for security and low-power sensing; not suitable for CAN-based automotive or industrial networking. | Chosen for secure IoT endpoints where cryptographic acceleration and sub-µA deep-sleep outweigh CAN/USB OTG needs. |
Compared with STM32F407VGT6 and MSP432P401RIPZT, TM4C1237H6PGEI uniquely balances 80 MHz real-time control, dual CAN, USB OTG with PHY, and sub-2 µA hibernate - making it optimal for compact, battery-aware, multi-bus industrial controllers.
Availability
TM4C1237H6PGEI is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and USB-connected embedded gateways requiring stable component supply, long-term lifecycle assurance, and extended-temperature qualification.
Supply support for TM4C1237H6PGEI 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 technologies, with decades of experience in industrial, automotive, and communications markets.
The TM4C1237H6PGEI belongs to TI's Tiva C Series microcontrollers - designed specifically for cost-sensitive, real-time embedded applications demanding rich connectivity, low-power operation, and robust peripheral integration without external glue logic.
FAQ
What is the maximum operating frequency of the TM4C1237H6PGEI?
The TM4C1237H6PGEI operates at a maximum system clock frequency of 80 MHz, achieved via its internal PLL driven from either the internal 16 MHz oscillator or an external crystal. This frequency is fully supported across the entire industrial temperature range (–40°C to +105°C) and enables deterministic real-time response for time-critical control loops.
Does the TM4C1237H6PGEI include an integrated USB physical layer (PHY)?
Yes, the TM4C1237H6PGEI integrates a full-speed (12 Mbps) USB 2.0 OTG PHY, eliminating the need for an external transceiver. This allows direct connection to USB cables and supports device, host, and OTG roles - confirmed in Section 1.3.3 and Figure 1-2 of the official TM4C1237H6PGE datasheet (SPMS360E).
What low-power modes does the TM4C1237H6PGEI support, and what is the lowest current draw?
The TM4C1237H6PGEI supports Sleep, Deep Sleep, and Hibernate modes. In Hibernate mode with RTC active and battery backup enabled, it draws just 1.7 µA - verified in Section 7.3.7 and Table 7-1 of the SPMS360E datasheet. This mode retains RTC time, 2 KB of battery-backed RAM, and wake capability via external pin or RTC alarm.
How many CAN controllers are integrated into the TM4C1237H6PGEI, and are they compliant with CAN FD?
The TM4C1237H6PGEI integrates two independent CAN 2.0A/B controllers compliant with ISO 11898-1:2003. They do not support CAN FD; each controller supports up to 32 message objects, programmable bit timing, and self-test modes - detailed in Section 1.3.3 and Chapter 22 of SPMS360E.
Is the TM4C1237H6PGEI pin-compatible with other Tiva C Series microcontrollers in the same package?
The TM4C1237H6PGEI uses the 48-pin LQFP (PGE) package shared with several other TM4C123x devices, but pin compatibility is not guaranteed across all variants. Peripheral mapping and GPIO alternate functions differ between part numbers - always verify against the specific device's datasheet pin diagram (e.g., Figure 2-1 in SPMS360E) before board reuse.
TM4C1237H6PGEI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 144-LQFP
- Series:
- Tiva™ C
- Packaging:
- Tray
- 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:
- 105
- 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 22x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1237H6PGEI FAQ
1.How can I place an order for TM4C1237H6PGEI through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1237H6PGEI 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 TM4C1237H6PGEI reliable?
The price and inventory of TM4C1237H6PGEI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1237H6PGEI is usually 5 days.
3.What payment methods are accepted for TM4C1237H6PGEI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1237H6PGEI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1237H6PGEI?
TM4C1237H6PGEI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1237H6PGEI 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 TM4C1237H6PGEI?
For technical support, including TM4C1237H6PGEI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1237H6PGEI requirements.
6.How does Aetrix verify that TM4C1237H6PGEI is sourced from the original manufacturer or authorized distributors?
All TM4C1237H6PGEI 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 TM4C1237H6PGEI meets industry standards.
7.What is the process for return or replacement of TM4C1237H6PGEI?
All TM4C1237H6PGEI units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1237H6PGEI, 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 TM4C1237H6PGEI part is unused and in its original packaging.
Return procedure for TM4C1237H6PGEI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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