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Texas Instruments TM4C1231H6PZIR
- Part No.:
- TM4C1231H6PZIR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TM4C1231H6PZIR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TM4C1231H6PZIR 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 On-The-Go support. It operates at up to 80 MHz and targets real-time industrial control, motor drive, and sensor hub applications requiring deterministic floating-point math and low-latency peripheral response.
For engineers reviewing the TM4C1231H6PZIR datasheet, TM4C1231H6PZIR pinout, TM4C1231H6PZIR application, or TM4C1231H6PZIR equivalent, key selection criteria include its 100-pin LQFP package, -40°C to +105°C industrial temperature grade, integrated hibernation module with RTC and battery-backed memory, and full TivaWare™ software stack compatibility.
Technical Context
The TM4C1231H6PZIR integrates a single-core ARM Cortex-M4F processor with hardware FPU and NVIC supporting up to 80 interrupts. Its system-level architecture includes a 32-bit AHB bus matrix, μDMA controller with 32 channels, and configurable GPIOs with slew-rate control and programmable pull-ups/pull-downs.
Peripherals are tightly coupled via APB buses: dual 16-bit general-purpose timers with PWM/RTC/capture modes, four UARTs (one with ISO 7816 and SIR), two I²C modules, two SPI interfaces, and a 12-channel 12-bit ADC with four independent sample sequencers and hardware averaging - all clocked from a flexible PLL-based system clock tree with multiple internal/external sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with hardware FPU and 32-bit SIMD instructions for deterministic real-time signal processing. |
| Memory | 256 KB on-chip Flash (with ECC), 32 KB SRAM, 2 KB EEPROM, and 32 KB ROM with boot loader and driver library. |
| ADC | 12-bit SAR ADC with 12 input channels, 1 MSPS sampling rate, four independent sequencers, and hardware averaging up to 64 samples. |
| PWM | Two 16-bit PWM modules (PWM0/PWM1), each with six outputs, dead-band generation, fault inputs, and synchronous update capability. |
| USB | USB 2.0 On-The-Go controller with integrated PHY, supporting device/host/OTG roles and full-speed (12 Mbps) operation. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, rated for -40°C to +105°C industrial temperature range. |
| Debug | JTAG and SWD interfaces with 4-bit TPIU trace port, supporting real-time instruction tracing and non-intrusive debugging. |
Pinout & Package
TM4C1231H6PZIR is housed in a 100-pin LQFP package (PZ suffix), with exposed thermal pad for enhanced thermal dissipation in high-duty-cycle applications. Pin assignments follow TI's standard Tiva C Series pin mapping for consistent layout reuse across the TM4C123x family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply rails | VDD (digital core), VDDA (analog), VDDC (USB PHY) require separate 3.3 V filtering; decoupling mandatory per TI layout guidelines. |
| GND, GNDA, GNDC | Ground references | Digital, analog, and USB ground planes must be partitioned and joined at single point near regulator to minimize noise coupling. |
| USB0VBUS, USB0ID | USB OTG detection | Enable host/device role negotiation: USB0ID = low → device mode; USB0VBUS sensing required for VBUS presence detection. |
| SSI0CLK, SSI0FSS, SSI0RX, SSI0TX | SPI interface signals | Configurable as master/slave; supports Motorola/Freescale, TI, and National Semiconductor SPI protocols with programmable clock polarity/phase. |
| U0RX, U0TX, U0CTS, U0RTS | UART0 with flow control | Full modem handshaking support; RTS/CTS lines enable hardware flow control for reliable high-speed serial communication. |
| PH0, PH1, PH2, PH3 | Hibernate wake-up pins | Dedicated hibernation module inputs; can trigger wake-up from deep-sleep states using external edge or level transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Enables sub-1 µA deep-sleep current with RTC, battery-backed RAM (2 KB), and wake-up via GPIO, external interrupt, or RTC match - ideal for battery-powered sensor nodes. |
| μDMA Controller | 32-channel memory-peripheral DMA eliminates CPU overhead for ADC sampling, UART transfers, and PWM updates - critical for deterministic real-time loop execution. |
| TivaWare™ Support | TI-provided driver library, USB stack, and FreeRTOS BSP reduce firmware development time by >40% versus bare-metal implementation. |
| Integrated Analog | On-die temperature sensor, 12-bit ADC with hardware averaging, and comparator unit enable closed-loop thermal monitoring and analog threshold detection without external components. |
| GPIO Flexibility | Each of 64 GPIO pins supports multiple alternate functions, slew-rate control, 2–8 mA drive strength, and individually configurable pull-up/pull-down resistors. |
Applications
| Industrial Motor Control | Smart Sensor Hub |
|---|---|
Use Scenario: Closed-loop BLDC motor control in HVAC blowers or pump drives requiring precise PWM timing, current sensing, and thermal protection. IC Role / Device Role / Timing Role: Real-time controller executing field-oriented control (FOC) algorithms with hardware-accelerated trigonometric and square-root operations via FPU. Use Value: 80 MHz Cortex-M4F core and dual 16-bit PWM modules with dead-band insertion ensure <500 ns timing resolution for gate-driver synchronization and overcurrent fault response. | Use Scenario: Multi-sensor data aggregation node in predictive maintenance systems, collecting vibration, temperature, and humidity data for edge analytics. IC Role / Device Role / Timing Role: Sensor fusion hub with simultaneous ADC sampling, I²C/SPI peripheral management, and USB/UART data streaming to gateway or PC. Use Value: 12-channel 12-bit ADC with four sequencers enables concurrent sampling of 12 sensors at 1 MSPS, while hibernation mode extends battery life to >2 years on coin-cell power. |
| USB Human Interface Device | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Industrial HMI panel with touch interface, LED indicators, and USB-CDC virtual COM port for configuration and diagnostics. IC Role / Device Role / Timing Role: USB device controller managing HID reports and CDC ACM class endpoints while running local GUI logic and GPIO-driven status feedback. Use Value: Integrated USB 2.0 OTG PHY eliminates external transceiver; TivaWare USB stack provides certified CDC/HID class drivers reducing certification effort. | Use Scenario: DIN-rail mounted digital I/O expansion module for legacy PLC systems, supporting 16-channel isolated inputs and 8-channel relay outputs. IC Role / Device Role / Timing Role: Deterministic I/O scheduler coordinating opto-isolated input sampling, watchdog-timed output updates, and Modbus RTU over UART. Use Value: Hardware CRC generator, configurable UART with automatic address matching, and 80 MHz timing margin ensure <1 ms scan cycle consistency under EMI stress. |
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 peripheral set but in 64-pin LQFP; lacks USB PHY, hibernation module, and 2 KB EEPROM. | Targeted at space-constrained cost-sensitive designs where USB and ultra-low-power sleep are not required. | Select TM4C123GH6PM only if board area and BOM cost outweigh need for USB connectivity and deep-sleep capability. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB Flash, no integrated USB PHY, requires external crystal for full-speed USB, different pinout and peripheral register map. | Better suited for high-throughput applications like audio processing or Ethernet bridging, but demands more PCB area and external components. | Choose STM32F407VGT6 when higher clock speed and larger Flash are essential, and engineering resources exist to port firmware and validate USB timing. |
Compared with TM4C123GH6PM and STM32F407VGT6, the TM4C1231H6PZIR delivers optimal balance of integrated USB 2.0 OTG, hibernation-ready power management, and industrial-grade packaging - enabling faster time-to-market for USB-connected, battery-aware embedded controllers without external PHY or RTC crystals.
Availability
TM4C1231H6PZIR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor hubs, USB human interface devices, and programmable logic controller I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TM4C1231H6PZIR 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 high-reliability silicon for industrial, automotive, and aerospace applications.
The TM4C123x series was designed specifically for real-time industrial control and IoT edge nodes - emphasizing integrated analog, deterministic timing, low-power hibernation, and out-of-box USB connectivity with minimal external components.
FAQ
What is the maximum operating frequency of the TM4C1231H6PZIR?
The TM4C1231H6PZIR operates at a maximum system clock frequency of 80 MHz, achieved via its integrated PLL that accepts input from internal precision oscillator (±1%), external crystal (4–25 MHz), or external clock source. This frequency is fully supported across all peripherals and memory subsystems under industrial temperature conditions (-40°C to +105°C).
Does the TM4C1231H6PZIR include an integrated USB physical layer (PHY)?
Yes, the TM4C1231H6PZIR integrates a full-speed USB 2.0 PHY compliant with USB specification revision 2.0. It supports device, host, and OTG roles without requiring external transceivers, and includes dedicated VBUS sensing and ID pin inputs for automatic role detection per USB OTG standards.
What is the purpose of the hibernation module in the TM4C1231H6PZIR?
The hibernation module in the TM4C1231H6PZIR enables ultra-low-power operation with typical current draw below 1 µA. It retains RTC functionality, 2 KB of battery-backed RAM, and wake-up capability via GPIO, external interrupt, or RTC alarm - making it ideal for battery-powered sensor nodes and energy-harvesting applications where multi-year operation is required.
How many ADC channels and sample sequencers does the TM4C1231H6PZIR support?
The TM4C1231H6PZIR features a 12-bit successive-approximation ADC with 12 analog input channels and four independent sample sequencers. Each sequencer supports up to eight sample steps with configurable triggers, hardware averaging (up to 64 samples), and direct μDMA transfer - enabling concurrent, deterministic analog acquisition across multiple sensors.
Is the TM4C1231H6PZIR pin-compatible with other TM4C123x microcontrollers?
No, the TM4C1231H6PZIR is not pin-compatible with other TM4C123x variants such as TM4C123GH6PM or TM4C123BE6PM due to differences in package size (100-pin vs. 64-pin), peripheral inclusion (e.g., USB PHY, hibernation module), and pin function allocation. Board layout must be designed specifically for the 100-pin LQFP footprint of the TM4C1231H6PZIR.
TM4C1231H6PZIR 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:
- 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:
TM4C1231H6PZIR FAQ
1.How can I place an order for TM4C1231H6PZIR through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231H6PZIR 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 TM4C1231H6PZIR reliable?
The price and inventory of TM4C1231H6PZIR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231H6PZIR is usually 5 days.
3.What payment methods are accepted for TM4C1231H6PZIR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231H6PZIR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231H6PZIR?
TM4C1231H6PZIR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231H6PZIR 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 TM4C1231H6PZIR?
For technical support, including TM4C1231H6PZIR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231H6PZIR requirements.
6.How does Aetrix verify that TM4C1231H6PZIR is sourced from the original manufacturer or authorized distributors?
All TM4C1231H6PZIR 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 TM4C1231H6PZIR meets industry standards.
7.What is the process for return or replacement of TM4C1231H6PZIR?
All TM4C1231H6PZIR units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231H6PZIR, 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 TM4C1231H6PZIR part is unused and in its original packaging.
Return procedure for TM4C1231H6PZIR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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