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Texas Instruments TM4C1237E6PZI7
- Part No.:
- TM4C1237E6PZI7
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TM4C1237E6PZI7.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,486
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Product details
Overview
TM4C1237E6PZI7 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 with 12 channels, two 32-bit general-purpose timers, and USB 2.0 device interface. 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 control unit in embedded motor drives requiring real-time PWM generation and analog sensing.
For engineers reviewing the TM4C1237E6PZI7 datasheet, TM4C1237E6PZI7 pinout, TM4C1237E6PZI7 application, or TM4C1237E6PZI7 equivalent, key selection criteria include its integrated FPU for floating-point math, hibernation module with RTC and battery-backed memory, USB device capability, and support for TI's TivaWare™ software stack in resource-constrained industrial control designs.
Technical Context
The TM4C1237E6PZI7 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 RTC, battery-backed SRAM, and VDD3ON power mode, enabling ultra-low-power wake-up from deep sleep in under 1.5 µs.
Peripherals include two independent 32-bit general-purpose timers (expandable to 64-bit), one 16-bit watchdog timer, four UARTs (one with ISO 7816 and SIR support), two I²C modules, two SPI modules, and a 12-bit ADC with hardware averaging, sequencer-based sampling, and internal temperature sensor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F with FPU - enables deterministic floating-point computation for motor control and sensor fusion without software emulation. |
| Max Clock Speed | 80 MHz - delivers sufficient throughput for real-time closed-loop control with <10 µs interrupt latency. |
| Flash / SRAM | 256 KB flash / 32 KB SRAM - supports bootloader, application firmware, and runtime data buffers in standalone operation. |
| ADC Resolution & Channels | 12-bit, 12-channel - provides precision voltage/current measurement across multiple analog inputs simultaneously. |
| USB Interface | USB 2.0 Device - enables direct PC connectivity for firmware updates and diagnostic communication without external transceivers. |
| Operating Temp | –40°C to +105°C - qualified for under-hood automotive and industrial environments without derating. |
| Hibernation Current | 1.7 µA typical - allows multi-year battery operation in remote monitoring nodes using RTC wake-up events. |
Pinout & Package
TM4C1237E6PZI7 is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow TI's standard Tiva C Series pinout layout, supporting multiplexed GPIO, peripheral functions, and dedicated debug interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VDDA / VDDC | Power supply rails | Digital core (VDD), analog (VDDA), and USB PHY (VDDC) are independently decoupled to minimize noise coupling into ADC and USB circuits. |
| PD0 / PD1 | USB0 D+ / D− | Dedicated full-speed USB 2.0 differential pair with internal pull-ups; requires no external transceiver for device-mode operation. |
| PF0 / PF4 | NMI / USER SW1 | Non-maskable interrupt input and user-configurable pushbutton input - used for emergency stop or field service triggers. |
| PA0–PA7 | ADC0 CH0–CH7 | Eight analog input channels mapped to Port A pins - supports simultaneous sampling via hardware sequencer for synchronized current/voltage acquisition. |
| PC4–PC7 | PWM0 M0–M3 | Four complementary PWM outputs with dead-time insertion - directly drives three-phase inverter gate drivers in motor control applications. |
| TCK / TMS / TDO / TDI | JTAG/SWD debug interface | Standard 4-pin JTAG or 2-pin SWD interface - enables full-speed debugging, flash programming, and real-time trace via TI XDS110 or compatible probes. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Single-precision IEEE 754 compliant - accelerates trigonometric, exponential, and filter computations required in field-oriented motor control. |
| Hibernation Module | RTC + battery-backed 2 KB SRAM + wake-on-external-interrupt - enables low-power sensor logging with time-stamped data retention during main power loss. |
| Programmable GPIO Commit | Hardware-enforced write-protection of GPIO configuration registers - prevents accidental reconfiguration during runtime in safety-critical sequences. |
| μDMA Controller | 32-channel micro-DMA with scatter-gather support - offloads CPU from ADC-to-memory and UART-to-buffer transfers, reducing ISR overhead by >70%. |
| Analog Comparator + DAC | Two analog comparators with programmable reference and 6-bit internal DAC - enables fast overvoltage/overcurrent trip detection with configurable hysteresis. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC blowers and pump systems with real-time current sensing and commutation timing. IC Role / Device Role / Timing Role: Primary controller executing FOC algorithm, generating six-channel complementary PWM with dead-time, and sampling dual-shunt currents via ADC. Use Value: Integrated FPU and μDMA enable sub-50 µs control loop execution; hibernation mode reduces standby power to <2 µA when idle. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality with periodic wireless upload. IC Role / Device Role / Timing Role: System-on-chip managing sensor interfacing (I²C, ADC), RTC-triggered wake-up, data preprocessing, and UART/USB host communication. Use Value: On-chip 12-bit ADC with hardware averaging improves SNR for weak sensor signals; 2 KB battery-backed SRAM retains calibration and event logs across power cycles. |
| USB Human Interface Device | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Industrial keypad or diagnostic tool connecting to host PC via USB HID class for configuration and status reporting. IC Role / Device Role / Timing Role: USB device endpoint handling HID report descriptors, button scan matrix, LED feedback, and firmware update requests. Use Value: Native USB 2.0 device controller eliminates external PHY; TivaWare HID stack provides certified class-compliant implementation with <10 ms report latency. |
Use Scenario: DIN-rail mounted digital I/O expansion module communicating with main PLC via RS-485 Modbus RTU. IC Role / Device Role / Timing Role: Protocol gateway converting Modbus commands to GPIO state changes, reading discrete inputs, and managing watchdog supervision. Use Value: Dual UARTs allow simultaneous Modbus RTU (UART0) and local debug console (UART1); GPIO commit protection ensures I/O states remain stable during firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C1294NCPDT | 1 MB flash, 256 KB RAM, Ethernet MAC, no hibernation module, larger 128-pin BGA package | Suitable for networked edge controllers requiring TCP/IP stack and high memory headroom; lacks ultra-low-power hibernation | Select when Ethernet connectivity and larger code space outweigh need for sub-2 µA sleep current. |
| STM32F407VGT6 | 1 MB flash, 192 KB RAM, FPU, 168 MHz max clock, different peripheral set (no hibernation, no USB device-only mode) | Better suited for high-throughput signal processing; requires external USB transceiver for device mode and lacks integrated RTC battery backup | Choose for higher CPU performance and DSP extensions where TI ecosystem independence is preferred. |
Compared with TM4C1237E6PZI7, TM4C1294NCPDT offers greater memory and networking but sacrifices hibernation efficiency, while STM32F407VGT6 delivers higher clock speed and broader ARM ecosystem support but requires additional components for USB device functionality and battery-backed timekeeping.
Availability
TM4C1237E6PZI7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, USB human interface devices, and PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for TM4C1237E6PZI7 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 connectivity technologies with over 90 years of innovation in industrial and automotive electronics.
The TM4C1237E6PZI7 belongs to TI's Tiva C Series microcontrollers, designed specifically for cost-sensitive, real-time embedded applications demanding integrated analog, USB, and ultra-low-power hibernation capabilities in industrial automation and sensing.
FAQ
What is the maximum operating frequency of the TM4C1237E6PZI7?
The TM4C1237E6PZI7 operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with an external crystal or oscillator input. This frequency is fully supported across the entire industrial temperature range (–40°C to +105°C), and all peripherals-including ADC, timers, and USB-are characterized to function correctly at this speed. The TM4C1237E6PZI7 maintains consistent timing margins and interrupt latency under worst-case voltage and temperature conditions.
Does the TM4C1237E6PZI7 support USB device mode without external components?
Yes, the TM4C1237E6PZI7 integrates a full-speed USB 2.0 device controller with on-die transceiver, allowing direct connection to a USB host using only passive ESD protection and termination resistors. It supports standard USB classes including CDC, HID, and MSC out of the box via TI's TivaWare™ USB library. No external PHY or level shifter is required for basic device-mode operation, simplifying board design and reducing BOM cost.
What analog features are included in the TM4C1237E6PZI7?
The TM4C1237E6PZI7 includes a 12-bit, 1-MSPS analog-to-digital converter with 12 input channels, hardware sample averaging (up to 64x), and four programmable sample sequencers. It also integrates two analog comparators with internal 6-bit DAC references, an internal temperature sensor, and dedicated analog supply (VDDA) with separate ground (VSSA) for noise isolation. These features enable precise sensor signal conditioning and real-time threshold detection without external components.
How does the hibernation module in the TM4C1237E6PZI7 reduce power consumption?
The hibernation module in the TM4C1237E6PZI7 reduces active current to 1.7 µA typical by powering down the main CPU, flash, and most peripherals while retaining RTC operation, 2 KB of battery-backed SRAM, and wake-up capability via external pins or RTC alarms. It uses a dedicated hibernate domain powered by VBAT, allowing operation from coin-cell batteries for years. The TM4C1237E6PZI7 wakes in under 1.5 µs, making it suitable for duty-cycled sensor applications where responsiveness and energy efficiency are both critical.
Is the TM4C1237E6PZI7 pin-compatible with other Tiva C Series microcontrollers?
No, the TM4C1237E6PZI7 is not pin-compatible with other Tiva C Series variants such as the TM4C1294 or TM4C123GH6PM due to differences in package size (100-pin LQFP vs. 128-pin BGA or 64-pin LQFP), peripheral mapping, and power rail requirements. While software migration between Tiva C devices is facilitated by TI's TivaWare™ driver library and common register architecture, hardware redesign is required for substitution. The TM4C1237E6PZI7 pinout is unique to its 100-pin LQFP configuration.
TM4C1237E6PZI7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Tiva™ C
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- 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:
TM4C1237E6PZI7 FAQ
1.How can I place an order for TM4C1237E6PZI7 through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1237E6PZI7 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 TM4C1237E6PZI7 reliable?
The price and inventory of TM4C1237E6PZI7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1237E6PZI7 is usually 5 days.
3.What payment methods are accepted for TM4C1237E6PZI7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1237E6PZI7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1237E6PZI7?
TM4C1237E6PZI7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1237E6PZI7 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 TM4C1237E6PZI7?
For technical support, including TM4C1237E6PZI7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1237E6PZI7 requirements.
6.How does Aetrix verify that TM4C1237E6PZI7 is sourced from the original manufacturer or authorized distributors?
All TM4C1237E6PZI7 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 TM4C1237E6PZI7 meets industry standards.
7.What is the process for return or replacement of TM4C1237E6PZI7?
All TM4C1237E6PZI7 units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1237E6PZI7, 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 TM4C1237E6PZI7 part is unused and in its original packaging.
Return procedure for TM4C1237E6PZI7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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