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Texas Instruments TM4C1232E6PMI
- Part No.:
- TM4C1232E6PMI
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1232E6PMI.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,097
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Product details
Overview
TM4C1232E6PMI 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-used in industrial motor control, sensor hubs, and USB-connected embedded systems.
For engineers reviewing the TM4C1232E6PMI datasheet, TM4C1232E6PMI pinout, TM4C1232E6PMI application, or TM4C1232E6PMI equivalent, key selection factors include its USB device capability, floating-point unit support, 12-bit analog performance, low-power sleep modes, and TivaWare software ecosystem compatibility.
Technical Context
The TM4C1232E6PMI integrates a 32-bit ARM Cortex-M4F core with hardware FPU and NVIC for deterministic real-time interrupt handling. It supports Thumb-2 instruction set, bit-band memory access, and MPU-enforced memory protection for safety-critical firmware.
System-level integration includes USB 2.0 device PHY, μDMA controller with 32-channel arbitration, and configurable clock tree with PLL, internal RC oscillator, and external crystal support up to 25 MHz-enabling precise timing across peripherals including four 32/64-bit general-purpose timers and two watchdog modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with hardware FPU - enables real-time signal processing and IEEE-754-compliant math without software emulation. |
| Flash Memory | 256 KB on-chip flash with 128-bit wide interface - supports fast code execution and over-the-air firmware updates with dual-bank erase capability. |
| SRAM | 32 KB single-cycle SRAM - sufficient for real-time stack, heap, and peripheral buffers without external memory dependency. |
| ADC | 12-bit, 1 MSPS SAR ADC with 12 input channels and hardware averaging - delivers high-resolution sensor data acquisition with noise suppression. |
| USB Interface | USB 2.0 full-speed device controller with integrated PHY - eliminates need for external transceiver in HID, CDC, or MSC class implementations. |
| Timers | Four 32/64-bit GPTM blocks (8 total 16-bit timers) + two independent watchdogs - supports PWM generation, quadrature encoding, and fail-safe timeout monitoring. |
| I/O Pins | 68 GPIO pins with 5-V tolerant inputs and programmable slew rate - allows direct interfacing with legacy logic and industrial sensors without level-shifting. |
Pinout & Package
TM4C1232E6PMI is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad for enhanced heat dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated domains for digital logic (VDD), analog circuitry (VDDA), and core voltage regulator (VDDC) - enable clean power separation and reduced noise coupling. |
| GND, GNDA, GNDC | Ground returns | Isolated ground paths for digital, analog, and core sections - critical for maintaining ADC accuracy and signal integrity. |
| USB0_P, USB0_M | USB differential pair | Integrated full-speed USB 2.0 transceiver I/O - requires only series 27 Ω resistors and no external PHY. |
| PD0–PD7, PE0–PE5, PF0–PF4, etc. | General-purpose I/O | Multi-function pins supporting UART, I²C, SSI, PWM, and analog inputs - configurable per-port via GPIOAFSEL and GPIODEN registers. |
| XTAL_IN, XTAL_OUT | Clock oscillator interface | Supports external 4–25 MHz crystal for precise system timing - used by PLL to generate 80 MHz CPU clock with ±50 ppm stability. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware-accelerated single-precision math - reduces DSP loop latency by >10× vs. software emulation, enabling real-time filtering and PID control. |
| μDMA Controller | 32-channel scatter-gather DMA with peripheral-to-memory and memory-to-peripheral transfers - offloads CPU during ADC sampling, UART streaming, and USB packet handling. |
| ROM-Based Bootloader | Pre-programmed ROM bootloader supporting In-Application Programming (IAP) via UART, USB, or SSI - simplifies field firmware updates without external programmer. |
| Analog Integration | Internal temperature sensor, 12-bit ADC with hardware averaging and digital comparators - enables self-monitoring and threshold-triggered interrupts without external components. |
| Low-Power Modes | Five sleep modes (Sleep, Deep Sleep, Hibernate, Shutdown, and Backup) with wake-on-GPIO, RTC, or USB event - extends battery life in portable sensor nodes. |
Applications
| Industrial Motor Control | USB Human Interface Device (HID) |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using encoder feedback and current sensing. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM waveform generation, and ADC-synchronized current sampling. Use Value: Hardware FPU and deterministic 80 MHz timing ensure sub-microsecond loop jitter, while integrated ADC and timers reduce BOM count by eliminating external signal conditioning ICs. | Use Scenario: Keypad, touchpad, or custom HID device connecting to PC or embedded host via USB. IC Role / Device Role / Timing Role: USB device controller managing descriptor enumeration, report buffering, and HID-class protocol compliance. Use Value: On-chip USB PHY and ROM bootloader eliminate external transceiver and simplify certification; 32 KB SRAM accommodates report descriptors and double-buffered endpoint FIFOs. |
| Sensor Data Acquisition Hub | Smart Lighting Controller |
Use Scenario: Multi-sensor node aggregating temperature, humidity, and ambient light readings for edge preprocessing. IC Role / Device Role / Timing Role: Analog front-end manager with simultaneous ADC sampling, I²C/SPI sensor polling, and wireless interface bridging. Use Value: 12-channel 12-bit ADC with hardware averaging delivers stable readings under EMI; μDMA enables concurrent sensor reads and BLE/Wi-Fi packet prep without CPU intervention. | Use Scenario: DALI or 0–10 V dimmable LED driver with color mixing and thermal derating logic. IC Role / Device Role / Timing Role: PWM generator with dead-time insertion, temperature-aware duty cycle adjustment, and communication interface for lighting network commands. Use Value: Four independent 32/64-bit timers support multi-channel PWM with synchronized phase offsets; internal temperature sensor enables automatic luminance compensation at runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C123GH6PM | Higher flash (256 KB vs. same), identical package and pinout, but adds Ethernet MAC and additional peripherals - larger die size and higher cost. | Targeted at networked industrial controllers requiring Ethernet connectivity - not needed for USB-only or sensor-only use cases. | Select TM4C123GH6PM only if Ethernet PHY integration is required; otherwise TM4C1232E6PMI offers better cost/performance ratio for USB-centric designs. |
| STM32F401CEU6 | ARM Cortex-M4F @ 84 MHz, 512 KB flash, 96 KB RAM, no integrated USB PHY - requires external USB transceiver and lacks ROM bootloader. | Better suited for high-memory applications like audio codecs or complex GUIs - less optimal for compact USB device firmware with minimal external components. | Choose STM32F401CEU6 when larger RAM or flash is mandatory; TM4C1232E6PMI provides tighter integration for USB device class implementations with lower component count. |
Compared with TM4C123GH6PM and STM32F401CEU6, the TM4C1232E6PMI delivers optimal balance of USB integration, analog capability, and cost for compact embedded devices-avoiding unnecessary Ethernet overhead or external USB PHY complexity while retaining full FPU and real-time timer resources.
Availability
TM4C1232E6PMI is available at Aetrix Electronics and suitable for industrial motor control, USB human interface devices, sensor data acquisition hubs, and smart lighting controllers requiring stable component supply and long-term production support.
Supply support for TM4C1232E6PMI 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 consumer applications.
The TM4C1232E6PMI belongs to TI's Tiva C Series microcontrollers, designed specifically for cost-sensitive, USB-enabled embedded applications requiring real-time performance, analog integration, and robust software support via TivaWare.
FAQ
What is the maximum operating frequency of the TM4C1232E6PMI?
The TM4C1232E6PMI operates at a maximum CPU frequency of 80 MHz, achieved via its internal PLL that multiplies an external 4–25 MHz crystal or internal 16 MHz RC oscillator. This frequency is fully supported across all voltage and temperature ranges specified in the datasheet, and all peripherals-including USB, ADC, and timers-are rated for synchronous operation at this speed.
Does the TM4C1232E6PMI include an integrated USB physical layer?
Yes, the TM4C1232E6PMI includes a full-speed USB 2.0 device controller with an integrated PHY. This eliminates the need for an external USB transceiver, reducing bill-of-materials and PCB area. The USB interface supports standard device classes including CDC, HID, and MSC, and is accessible through dedicated USB0_P and USB0_M pins on the LQFP package.
How much on-chip flash and SRAM does the TM4C1232E6PMI provide?
The TM4C1232E6PMI integrates 256 KB of on-chip flash memory and 32 KB of single-cycle SRAM. The flash supports read-while-write operation and has dedicated security features including flash lock bits and user-configurable memory protection. The SRAM is partitioned into contiguous blocks accessible by both CPU and μDMA, enabling efficient buffer management for real-time data streams.
What analog capabilities does the TM4C1232E6PMI offer?
The TM4C1232E6PMI features a 12-bit, 1 MSPS successive approximation register (SAR) ADC with 12 input channels, hardware sample averaging (up to 64 samples), and four independent sample sequencers. It also includes an internal temperature sensor, analog comparator module, and dedicated VDDA/GNDA power domains to ensure high-accuracy analog measurements in mixed-signal environments.
Is there a ROM-based bootloader included in the TM4C1232E6PMI?
Yes, the TM4C1232E6PMI contains a factory-programmed ROM bootloader that supports firmware updates over UART, USB, or SSI interfaces. This bootloader enables in-application programming (IAP) without requiring JTAG or SWD debug tools, streamlining field upgrades and reducing production test complexity. Its presence is verified by reading the BOOTCFG register at boot time.
TM4C1232E6PMI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-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
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, WDT
- Number of I/O:
- 49
- 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 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TM4C1232E6PMI FAQ
1.How can I place an order for TM4C1232E6PMI through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1232E6PMI 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 TM4C1232E6PMI reliable?
The price and inventory of TM4C1232E6PMI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1232E6PMI is usually 5 days.
3.What payment methods are accepted for TM4C1232E6PMI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1232E6PMI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1232E6PMI?
TM4C1232E6PMI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1232E6PMI 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 TM4C1232E6PMI?
For technical support, including TM4C1232E6PMI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1232E6PMI requirements.
6.How does Aetrix verify that TM4C1232E6PMI is sourced from the original manufacturer or authorized distributors?
All TM4C1232E6PMI 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 TM4C1232E6PMI meets industry standards.
7.What is the process for return or replacement of TM4C1232E6PMI?
All TM4C1232E6PMI units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1232E6PMI, 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 TM4C1232E6PMI part is unused and in its original packaging.
Return procedure for TM4C1232E6PMI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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