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Texas Instruments TM4C1231E6PZIR
- Part No.:
- TM4C1231E6PZIR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TM4C1231E6PZIR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,574
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Product details
Overview
TM4C1231E6PZIR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB flash, 32 KB SRAM, integrated USB 2.0 device controller, and 12-bit ADC with 12 channels - deployed in industrial motor control, sensor fusion gateways, and programmable logic controllers requiring deterministic real-time response.
For engineers reviewing the TM4C1231E6PZIR datasheet, TM4C1231E6PZIR pinout, TM4C1231E6PZIR application, or TM4C1231E6PZIR equivalent, key selection criteria include USB device stack support, hibernation module with RTC and battery-backed memory, 12-bit ADC sampling rate up to 1 MSPS, and JTAG/SWD debug interface compatibility with TI's Code Composer Studio and IAR Embedded Workbench.
Technical Context
The TM4C1231E6PZIR integrates a single-core ARM Cortex-M4F processor with hardware floating-point unit (FPU), supporting Thumb-2 instruction set and vector table relocation for flexible interrupt handling. It features a 32-bit bus matrix enabling concurrent access to flash, SRAM, and peripherals without arbitration stalls.
System-level integration includes a hibernation module with dedicated 32.768 kHz RTC oscillator, battery-backed RAM (2 KB), and VBAT power domain; plus a μDMA controller with 32-channel capability supporting peripheral-to-memory, memory-to-peripheral, and memory-to-memory transfers with configurable priority and arbitration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - enables deterministic real-time control with hardware FPU for sensor math and PID loop acceleration. |
| Memory | 256 KB flash + 32 KB SRAM + 2 KB hibernation RAM - supports firmware updates in-field and retains critical state during deep sleep. |
| ADC | 12-bit, 12-channel, 1 MSPS - delivers high-resolution analog sensing for motor current feedback or environmental monitoring. |
| USB | USB 2.0 full-speed device controller - allows direct PC connectivity for configuration, firmware upload, and data logging without external PHY. |
| Timers | 6 × 32-bit general-purpose timers (GPTM), 2 × watchdog timers - provides precise PWM generation, input capture, and fail-safe timeout protection. |
| Debug | JTAG & SWD interface with 4-pin serial wire debug - enables non-intrusive real-time tracing and low-pin-count debugging on space-constrained PCBs. |
| Package | 100-pin LQFP (PZ), RoHS-compliant, -40°C to +105°C operating range - suitable for industrial environments with extended thermal requirements. |
Pinout & Package
TM4C1231E6PZIR is housed in a 100-pin LQFP (PZ) package with 0.5 mm pitch, 14 mm × 14 mm body size, and exposed thermal pad. Pin assignments follow TI's standard Tiva C Series pin mapping for GPIO, peripheral multiplexing, and power domains.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate analog (VDDA), core (VDDC), and I/O (VDD) rails enable noise isolation for ADC accuracy and stable CPU operation. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog (GNDA) and core (GNDC) grounds reduce coupling noise into sensitive analog circuits. |
| USB0DP/USB0DM | USB differential pair | Integrated full-speed transceiver eliminates need for external USB PHY; requires only 27 Ω series resistors and ESD protection. |
| HIB, RTCCLK, VBAT | Hibernation domain signals | Enables ultra-low-power mode with RTC wake-up, battery-backed RAM retention, and automatic VDD fallback on main power loss. |
| SWDIO, SWCLK | Serial Wire Debug interface | Two-pin debug path supports programming, breakpoint insertion, and live register inspection without halting real-time execution. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Retains 2 KB RAM and RTC time across power cycles using VBAT; draws ≤1.5 µA in hibernate mode - extends battery life in remote sensors. |
| μDMA Controller | 32-channel DMA with scatter-gather support offloads CPU from data movement; enables zero-CPU-overhead ADC streaming or UART buffering. |
| Programmable GPIO | All 68 GPIO pins support slew-rate control, pull-up/down, open-drain, and edge-triggered interrupts - simplifies interface to legacy industrial I/O standards. |
| ROM Bootloader | Factory-programmed ROM contains USB and UART-based firmware update routines - enables field upgrades without external programmer or debug probe. |
| Analog Integration | On-chip temperature sensor, internal voltage reference, and comparator with interrupt output - reduces BOM count for thermal monitoring and overvoltage detection. |
Applications
| Industrial Motor Control | Smart Sensor Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC blowers and conveyor drives using PWM outputs and current-sense ADC inputs. IC Role / Device Role / Timing Role: Real-time execution host for FOC algorithms, with deterministic timer interrupts and hardware-accelerated math via Cortex-M4F FPU. Use Value: Enables sub-microsecond PWM dead-time insertion and synchronized ADC sampling at commutation edges - improves torque ripple and efficiency. |
Use Scenario: Aggregation of multiple analog (temperature, humidity) and digital (I²C, SPI) sensors in building automation nodes. IC Role / Device Role / Timing Role: Central sensor hub with USB interface for local configuration and data export; hibernation mode maintains time and state between polling intervals. Use Value: Eliminates external RTC and USB PHY, reducing bill-of-materials while supporting secure firmware updates via USB HID class. |
| Programmable Logic Controller (PLC) | Energy Monitoring Node |
Use Scenario: Replacement for discrete logic in small-form-factor PLCs handling discrete I/O, analog inputs, and Modbus RTU communication. IC Role / Device Role / Timing Role: Deterministic I/O scheduler with watchdog supervision and dual-timer redundancy for safety-critical timing functions. Use Value: Meets IEC 61131-3 scan cycle timing requirements with <100 µs jitter; GPIO commit registers prevent metastability during hot-swap I/O changes. |
Use Scenario: Sub-metering of electrical parameters (voltage, current, power factor) in commercial lighting panels and EVSE chargers. IC Role / Device Role / Timing Role: High-accuracy analog front-end controller with synchronized 12-bit ADC sampling and RMS calculation via FPU. Use Value: Achieves ±0.5% energy measurement accuracy over temperature using internal reference and calibration constants stored in EEPROM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C123GH6PM | Same core and peripherals but 144-pin LQFP, 256 KB flash, 32 KB SRAM, no hibernation module - lacks VBAT domain and RTC backup RAM. | Suitable for higher I/O count designs where deep-sleep retention is not required; larger footprint limits use in compact industrial modules. | Select when board space permits larger package and hibernation is unnecessary; verify GPIO remapping due to different pinout. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB flash, 192 KB SRAM, no integrated USB PHY - requires external USB transceiver for device mode. | Better suited for compute-intensive applications like audio processing or Ethernet bridging; lacks TI's ROM bootloader and hibernation architecture. | Choose when higher clock speed and memory capacity outweigh USB integration and low-power hibernation benefits. |
Compared with TM4C1231E6PZIR, TM4C123GH6PM offers more GPIOs but sacrifices hibernation capability, while STM32F407VGT6 delivers higher performance at the cost of increased BOM complexity and missing out-of-box USB device functionality.
Availability
TM4C1231E6PZIR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor gateways, and programmable logic controllers requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for TM4C1231E6PZIR 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 delivering reliable, high-performance silicon for industrial and automotive markets.
The TM4C1231E6PZIR belongs to TI's Tiva C Series microcontrollers, designed specifically for real-time industrial control applications demanding robust peripheral integration, low-power hibernation, and seamless USB connectivity without external components.
FAQ
What is the maximum operating frequency of the TM4C1231E6PZIR?
The TM4C1231E6PZIR operates at a maximum system clock frequency of 80 MHz, derived from its internal PLL that accepts input from either the precision internal oscillator (PIOSC) or an external crystal. This frequency is fully supported across all peripherals and memory interfaces, enabling deterministic real-time execution for time-critical control loops. The TM4C1231E6PZIR maintains this speed across its full industrial temperature range (-40°C to +105°C).
Does the TM4C1231E6PZIR include an integrated USB physical layer?
Yes, the TM4C1231E6PZIR integrates a full-speed USB 2.0 device controller with an on-die transceiver - eliminating the need for an external USB PHY chip. It supports USB HID, CDC, and MSC classes directly from ROM bootloader or application firmware. The TM4C1231E6PZIR requires only two 27 Ω series resistors and proper ESD protection on USB0DP/USB0DM lines for compliance.
How much hibernation memory does the TM4C1231E6PZIR provide, and what is retained during hibernate mode?
The TM4C1231E6PZIR provides 2 KB of battery-backed RAM within its hibernation module, which remains powered by VBAT during main supply removal. In hibernate mode, it retains RTC time, hibernation RAM contents, and wake-up configuration - drawing only 1.5 µA typical. The TM4C1231E6PZIR also supports automatic VDD fallback and brown-out detection to ensure safe transition into and out of hibernation.
Can the TM4C1231E6PZIR execute code directly from RAM?
Yes, the TM4C1231E6PZIR supports executing code from its 32 KB SRAM region, enabled via vector table relocation and memory-mapped address configuration. This capability is used for fast ISR handling, firmware patching, or running time-critical algorithms in zero-wait-state memory. The TM4C1231E6PZIR does not require cache or MMU to achieve this, leveraging its tightly coupled memory architecture.
What debug interfaces are supported by the TM4C1231E6PZIR?
The TM4C1231E6PZIR supports both 4-pin JTAG and 2-pin Serial Wire Debug (SWD) interfaces, compatible with TI's XDS110 and third-party debug probes. SWD mode uses SWDIO and SWCLK pins and provides full debug functionality including breakpoints, watchpoints, and real-time memory inspection. The TM4C1231E6PZIR also supports SWO trace output for instruction and data stream visibility.
TM4C1231E6PZIR 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
- 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:
TM4C1231E6PZIR FAQ
1.How can I place an order for TM4C1231E6PZIR through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231E6PZIR 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 TM4C1231E6PZIR reliable?
The price and inventory of TM4C1231E6PZIR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231E6PZIR is usually 5 days.
3.What payment methods are accepted for TM4C1231E6PZIR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231E6PZIR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231E6PZIR?
TM4C1231E6PZIR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231E6PZIR 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 TM4C1231E6PZIR?
For technical support, including TM4C1231E6PZIR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231E6PZIR requirements.
6.How does Aetrix verify that TM4C1231E6PZIR is sourced from the original manufacturer or authorized distributors?
All TM4C1231E6PZIR 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 TM4C1231E6PZIR meets industry standards.
7.What is the process for return or replacement of TM4C1231E6PZIR?
All TM4C1231E6PZIR units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231E6PZIR, 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 TM4C1231E6PZIR part is unused and in its original packaging.
Return procedure for TM4C1231E6PZIR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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