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Texas Instruments TM4C1237E6PZI
- Part No.:
- TM4C1237E6PZI
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TM4C1237E6PZI.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TM4C1237E6PZI from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 256 KB Flash, 32 KB SRAM, and integrated analog peripherals including 12-bit ADC (up to 1MSPS), two 16-bit PWM modules, and USB 2.0 OTG. It operates at up to 80 MHz and supports -40°C to +105°C industrial temperature range in a 100-pin LQFP package. It is used in motor control, industrial sensing, and USB-connected embedded systems.
For engineers reviewing the TM4C1237E6PZI datasheet, TM4C1237E6PZI pinout, TM4C1237E6PZI application, or TM4C1237E6PZI equivalent, key selection criteria include its integrated USB PHY, hibernation module with RTC and battery-backed memory, deterministic FPU-enabled real-time processing, and support for TI's TivaWare™ software stack.
Technical Context
The TM4C1237E6PZI integrates an ARM Cortex-M4F core with single-precision floating-point unit and NVIC supporting up to 80 interrupts. Its system-level integration includes a hibernation module with dedicated 32.768 kHz RTC oscillator, battery-backed SRAM (2 KB), and VBAT power domain - enabling ultra-low-power wake-up from deep sleep in under 1.5 µs.
Peripherals include dual 16-bit general-purpose timers (with PWM and capture/compare), four UARTs (one with ISO 7816 and SIR support), two I²C modules, two SPI interfaces, and a 12-channel 12-bit ADC with hardware averaging and digital comparators - all clocked via a flexible PLL-based system clock tree with multiple internal and external source options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with hardware FPU - enables deterministic real-time math (e.g., motor vector control) without software emulation overhead. |
| Memory | 256 KB Flash (programmable in 1 KB sectors), 32 KB SRAM, 2 KB battery-backed hibernation RAM - supports firmware updates and state retention during power loss. |
| ADC | 12-bit, 1 MSPS, 12-channel SAR ADC with hardware averaging (up to 64 samples) and 4 digital comparators - suitable for precision sensor monitoring with on-the-fly threshold detection. |
| USB Interface | USB 2.0 OTG with integrated PHY and 1 KB endpoint FIFO - eliminates need for external transceiver in host/peripheral designs. |
| Temperature Range | -40°C to +105°C - qualified for industrial automation, HVAC controls, and outdoor metering applications without derating. |
| Hibernation Module | Dedicated hibernate domain with RTC, VBAT backup, and wake-up latency <1.5 µs - enables sub-µA sleep current with fast, deterministic wake-up for event-driven systems. |
| PWM | Two 16-bit PWM modules (PWM0/PWM1), each with 4 generator blocks and 8 outputs - supports complementary high-resolution motor drive (e.g., 3-phase BLDC) with dead-band insertion. |
Pinout & Package
TM4C1237E6PZI is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per TI SPMS359E datasheet Rev E (June 2014), with dedicated JTAG/SWD debug pins, USB D+/D−, VDDA/VSSA analog supply pins, and GPIOs multiplexed across 16 peripheral functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power Supply Inputs | VDD (3.3 V digital core), VDDA (3.3 V analog), VDDC (1.2 V internal regulator input) - require separate decoupling for noise-sensitive ADC and USB operation. |
| USB0DP / USB0DM | USB 2.0 Differential Pair | Integrated PHY supports full-speed (12 Mbps) device/host/OTG modes; no external transceiver needed. |
| HIBERNATE_RTCCLK | Hibernate Module Clock Input | Accepts 32.768 kHz crystal or external clock - enables autonomous RTC operation during hibernation with VBAT supply. |
| PD0 / PD1 | UART0 RX/TX | Multiplexed as UART0 I/O; also configurable as GPIO or timer capture - provides primary debug/console interface with hardware flow control support. |
| PF0–PF4 | NMI / USER SW / GPIO | PF0 is NMI input; PF1–PF4 are user-accessible GPIOs with 2-mA drive strength - commonly used for board reset signaling or status indication. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware single-precision FPU compliant with IEEE 754 - reduces execution time of trigonometric, filter, and PID calculations by >10× vs. integer-only implementations. |
| Hibernate Module with RTC | Dedicated low-power domain with battery-backed 2 KB SRAM, calendar RTC, and wake-on-RTC-match or external pin - enables years-long operation on coin-cell backup. |
| USB 2.0 OTG with Integrated PHY | On-chip USB transceiver and endpoint controller - simplifies BOM and PCB layout; supports CDC, HID, and MSC class drivers out-of-box with TivaWare. |
| Programmable GPIO Configuration | Each GPIO supports slew-rate control, pull-up/down, open-drain, and 2/4/8 mA drive strength - allows direct interfacing with diverse logic families and sensors without external level shifters. |
| Analog Subsystem Integration | 12-bit ADC with hardware averaging, 4 digital comparators, and internal temperature sensor - enables closed-loop thermal management and analog signal conditioning without external ICs. |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithms using hardware FPU, synchronized PWM generation, and ADC sampling triggered by timer events. Use Value: Deterministic 80 MHz execution and sub-1 µs interrupt latency ensure precise commutation timing; integrated hibernation enables rapid wake-up for fault recovery or parameter updates. |
Use Scenario: Residential electricity meter with tamper detection, load profiling, and secure data upload via USB or UART. IC Role / Device Role / Timing Role: System controller managing metrology ADC interface, RTC-based billing intervals, cryptographic operations, and USB mass storage for firmware/data export. Use Value: Battery-backed hibernation RAM retains metering history during AC power loss; integrated USB OTG enables field technician firmware updates without additional interface hardware. |
| Programmable Logic Controller (PLC) I/O Module | USB-Connected Industrial Sensor Hub |
Use Scenario: DIN-rail mounted remote I/O node with digital input/output, analog input, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Central controller handling protocol stack (Modbus), GPIO scanning, analog acquisition, and watchdog supervision - all within single-chip solution. Use Value: Dual UARTs support simultaneous debug console and RS-485 communication; wide temperature range ensures reliability in unconditioned control cabinets. |
Use Scenario: Multi-sensor aggregator (temperature, humidity, vibration) connecting to PC or gateway via USB-CDC virtual COM port. IC Role / Device Role / Timing Role: Sensor interface hub performing time-synchronized sampling, local preprocessing, and USB streaming - eliminating need for host-side driver development. Use Value: Integrated USB PHY and TivaWare CDC stack enable plug-and-play enumeration; hibernation mode extends battery life in portable diagnostic tools. |
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 hibernation module | Better suited for networked HMI or gateway applications requiring Ethernet; lacks battery-backed RTC and ultra-low-power hibernate mode | Select when Ethernet connectivity and higher memory are critical; avoid if sub-µA sleep current or VBAT retention is required. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB Flash, 192 KB SRAM, no integrated USB PHY, no hibernation module, different pinout and peripheral mapping | Stronger FPU performance and larger memory, but requires external USB transceiver and external RTC/battery circuit for similar functionality | Choose for compute-intensive tasks where external component count is acceptable; TM4C1237E6PZI offers lower system-level BOM cost for USB + hibernate use cases. |
Compared with TM4C1294NCPDT and STM32F407VGT6, the TM4C1237E6PZI delivers optimal balance of USB integration, hibernation capability, and industrial temperature support in a cost-effective 100-pin LQFP - making it uniquely suited for battery-aware, USB-connected edge devices where system-level simplicity matters.
Availability
TM4C1237E6PZI is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, and programmable logic controller (PLC) I/O modules requiring stable component supply across extended product lifecycles.
Supply support for TM4C1237E6PZI 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and wireless technologies with over 90 years of innovation in industrial, automotive, and consumer electronics.
The TM4C1237E6PZI belongs to TI's Tiva C Series microcontrollers, designed specifically for cost-sensitive, real-time embedded applications requiring integrated analog, USB, and ultra-low-power hibernation - targeting industrial automation, building control, and portable instrumentation.
FAQ
What is the maximum operating frequency of the TM4C1237E6PZI?
The TM4C1237E6PZI operates at a maximum system clock frequency of 80 MHz, derived from an internal PLL that accepts inputs from multiple sources including the main oscillator (4–25 MHz), precision internal oscillator (PIOSC), or external clock. This frequency is fully supported across the full -40°C to +105°C temperature range and is validated in TI's production test flow per SPMS359E datasheet.
Does the TM4C1237E6PZI include an integrated USB physical layer?
Yes, the TM4C1237E6PZI includes a full-speed (12 Mbps) USB 2.0 OTG physical layer with integrated differential transceivers for USB0DP and USB0DM pins. This eliminates the need for an external USB transceiver and supports device, host, and OTG roles - verified in TI's USB compliance testing and documented in Section 14 of the SPMS359E datasheet.
What is the purpose of the hibernation module in the TM4C1237E6PZI?
The hibernation module in the TM4C1237E6PZI provides a dedicated low-power domain with battery-backed 2 KB SRAM, calendar-based RTC, and wake-up sources including RTC match, external pin, or GPIO. It achieves sub-µA sleep current and wake-up latency under 1.5 µs - enabling long-term data retention and event-triggered operation without main power, as specified in Section 7 of SPMS359E.
How much Flash and SRAM memory does the TM4C1237E6PZI have?
The TM4C1237E6PZI integrates 256 KB of on-chip Flash memory (organized in 1 KB sectors for flexible firmware updates) and 32 KB of general-purpose SRAM. Additionally, it includes 2 KB of battery-backed SRAM within the hibernation module - all confirmed in Section 1.3.2 and Table 1-1 of the SPMS359E datasheet.
Is the TM4C1237E6PZI pin-compatible with other Tiva C Series MCUs?
No, the TM4C1237E6PZI is not pin-compatible with other Tiva C Series MCUs such as the TM4C129x family. It uses a unique 100-pin LQFP package with specific peripheral mappings - for example, USB0DP/USB0DM are assigned to pins 85/86, while TM4C1294NCPDT places USB signals on different pins. Migration requires PCB redesign and firmware adaptation.
TM4C1237E6PZI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-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:
- 69
- Program Memory Size:
- 128KB (128K 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:
TM4C1237E6PZI FAQ
1.How can I place an order for TM4C1237E6PZI through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1237E6PZI 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 TM4C1237E6PZI reliable?
The price and inventory of TM4C1237E6PZI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1237E6PZI is usually 5 days.
3.What payment methods are accepted for TM4C1237E6PZI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1237E6PZI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1237E6PZI?
TM4C1237E6PZI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1237E6PZI 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 TM4C1237E6PZI?
For technical support, including TM4C1237E6PZI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1237E6PZI requirements.
6.How does Aetrix verify that TM4C1237E6PZI is sourced from the original manufacturer or authorized distributors?
All TM4C1237E6PZI 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 TM4C1237E6PZI meets industry standards.
7.What is the process for return or replacement of TM4C1237E6PZI?
All TM4C1237E6PZI units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1237E6PZI, 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 TM4C1237E6PZI part is unused and in its original packaging.
Return procedure for TM4C1237E6PZI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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