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Texas Instruments TM4C1231D5PZI7R
- Part No.:
- TM4C1231D5PZI7R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TM4C1231D5PZI7R.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TM4C1231D5PZI7R from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB flash, 32 KB SRAM, integrated USB 2.0 OTG, 12-bit ADC (1 MSPS, 12 channels), and 48 GPIOs in a 100-pin LQFP package. It serves as the main application processor in industrial control panels requiring real-time motor sequencing and analog sensor fusion.
For engineers reviewing the TM4C1231D5PZI7R datasheet, TM4C1231D5PZI7R pinout, TM4C1231D5PZI7R application, or TM4C1231D5PZI7R equivalent, key selection criteria include USB OTG host capability, hibernation module support for battery-backed RTC, FPU-enabled floating-point math for PID loop execution, and TI's TivaWare™ software stack compatibility.
Technical Context
The TM4C1231D5PZI7R integrates a single-core ARM Cortex-M4F CPU with hardware floating-point unit and memory protection unit (MPU), enabling deterministic real-time execution of safety-critical firmware. It supports Thumb-2 instruction set, vector table relocation, and NVIC with 8-level priority grouping for up to 64 interrupt sources.
System-level integration includes a programmable clock tree with PLL, multiple low-power modes (sleep, deep-sleep, hibernate), and on-chip hibernation module with battery-backed RTC and 2 KB hibernate RAM. Peripheral interconnect uses APB/AHB buses with configurable bus matrix arbitration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz - delivers deterministic 1.25 DMIPS/MHz with hardware FPU for real-time signal processing. |
| Memory | 256 KB flash + 32 KB SRAM + 2 KB hibernate RAM - sufficient for bootloader, application code, and retained state across power cycles. |
| ADC | 12-bit, 1 MSPS, 12-channel - enables simultaneous sampling of voltage, current, and temperature sensors in motor drives. |
| USB | USB 2.0 OTG controller with PHY - supports device/host/OTG roles without external transceiver for field-upgrade interfaces. |
| Timers | 6 × 32-bit GP timers (12 × 16-bit), 2 × watchdogs, hibernate RTC - provides precise PWM generation, input capture, and calendar timekeeping. |
| I/O | 48 GPIOs with 5-V tolerant inputs, slew-rate control, and configurable pull-up/down - simplifies interface to legacy industrial sensors and actuators. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - compatible with standard reflow processes and accessible for manual prototyping. |
Pinout & Package
TM4C1231D5PZI7R is housed in a 100-pin LQFP package with exposed thermal pad (PZ suffix). Pin functions are defined per TI SPMS335E datasheet Rev E, June 2014, with dedicated JTAG/SWD debug pins, USB D+/D−, VDDA/VSSA analog supply pins, and multiplexed peripheral signals routed to GPIO banks A–K.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate digital (VDD), analog (VDDA), and core (VDDC) rails enable noise isolation for ADC and PLL stability. |
| VSS, VSSA, VSSC | Ground returns | Dedicated analog ground (VSSA) and core ground (VSSC) reduce coupling between high-speed logic and precision analog paths. |
| USB0DP / USB0DM | USB 2.0 differential pair | On-die transceiver supports full-speed (12 Mbps) USB device/host operation without external PHY components. |
| PD0 / PD1 | UART0 RX/TX | Default UART0 I/O mapped to Port D pins - usable for console debug or host communication without remapping. |
| PF0–PF4 | NMI / USER SW / GPIO | Multi-function pins including non-maskable interrupt input and user pushbutton input with internal pull-up. |
| TCK / TMS / TDI / TDO / nSRST | JTAG/SWD debug interface | Standard 5-pin SWD interface enables full debug visibility, flash programming, and real-time trace via TI XDS110. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernate module with RTC | Retains 2 KB RAM and maintains calendar time on coin-cell backup (VBAT), enabling <1 µA sleep current for remote sensor nodes. |
| Floating-point unit (FPU) | Hardware-accelerated single-precision math reduces PID loop latency by >8× vs. software emulation, critical for closed-loop motor control. |
| Programmable clock system | Multiple PLL/divider paths allow independent configuration of system, USB, ADC, and PWM clocks - eliminates timing conflicts in mixed-signal designs. |
| GPIO configurability | Per-pin slew rate, drive strength, and interrupt edge select simplify EMI mitigation and interface adaptation across diverse industrial I/O standards. |
| TivaWare™ peripheral driver library | TI-provided, production-tested C APIs abstract register-level complexity - accelerates development of USB CDC, ADC sequencer, and PWM modules. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
|
Use Scenario: Compact PLC module controlling 3-phase BLDC motor with Hall-effect feedback and thermal monitoring. IC Role / Device Role / Timing Role: Main MCU executing field-oriented control (FOC) algorithm, managing PWM outputs, reading ADC channels, and communicating via USB-CDC to HMI. Use Value: Integrated FPU and 12-bit ADC with hardware averaging deliver sub-microsecond loop timing and <0.5% current measurement error at 10 kHz update rate. |
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and CO₂ over cellular backhaul. IC Role / Device Role / Timing Role: System controller managing ultra-low-power wake cycles, sensor polling, data preprocessing, and USB/UART firmware updates. Use Value: Hibernate mode with RTC alarm and VBAT retention achieves 5-year coin-cell life while maintaining accurate timestamping for data logs. |
| Human-Machine Interface (HMI) | USB Firmware Upgrade Adapter |
|
Use Scenario: Touch-enabled panel with LCD display, keypad, and local storage for machine setup and diagnostics. IC Role / Device Role / Timing Role: Application processor handling GUI rendering, button debouncing, SD card file I/O, and USB mass storage class for configuration export. Use Value: On-chip USB OTG and 256 KB flash eliminate need for external USB controller or EEPROM, reducing BOM count and PCB area. |
Use Scenario: Field-deployable adapter that bridges UART-based legacy devices to modern USB hosts for firmware updates. IC Role / Device Role / Timing Role: Protocol translator converting USB CDC ACM commands to TTL-level UART frames with configurable baud rates and flow control. Use Value: Dedicated USB PHY and DMA-driven UART peripherals enable zero-dropout 115.2 kbps bidirectional streaming without CPU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C123GH6PGE | 128 KB RAM (vs. 32 KB), 256 KB flash, same 100-pin LQFP, no hibernate module | Lacks battery-backed RTC and hibernate RAM - unsuitable for long-term battery operation but better for complex UI with frame buffer | Select when higher RAM bandwidth is needed for graphics or network stacks, and hibernation is not required. |
| STM32F401RET6 | ARM Cortex-M4F @ 84 MHz, 512 KB flash, 96 KB RAM, no native USB OTG PHY | Requires external USB transceiver; lacks integrated hibernate module and dedicated analog power domains | Choose when leveraging STM32Cube ecosystem and external USB PHY is acceptable; verify ADC SNR and thermal performance separately. |
Compared with TM4C1231D5PZI7R, TM4C123GH6PGE offers more RAM for dynamic workloads but sacrifices battery-retained state, while STM32F401RET6 provides larger memory but adds component count and layout complexity for USB connectivity.
Availability
TM4C1231D5PZI7R is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, human-machine interfaces, and USB protocol adapters requiring stable component supply and long-term manufacturability.
Supply support for TM4C1231D5PZI7R 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 wireless technologies, with decades of automotive and industrial qualification expertise.
The TM4C123x product line was designed for cost-sensitive, real-time embedded applications demanding integrated analog, USB, and low-power operation - targeting industrial automation, building controls, and portable instrumentation.
FAQ
What is the maximum operating frequency of the TM4C1231D5PZI7R?
The TM4C1231D5PZI7R operates at a maximum system clock frequency of 80 MHz, achieved using its internal PLL with an external crystal or oscillator input. This frequency applies to the ARM Cortex-M4F core, bus matrix, and most peripherals - all timing specifications in the SPMS335E datasheet assume this 80 MHz condition unless otherwise noted.
Does the TM4C1231D5PZI7R support USB device mode without external components?
Yes, the TM4C1231D5PZI7R includes a fully integrated USB 2.0 OTG controller with on-die transceiver, supporting full-speed (12 Mbps) device, host, and OTG modes. No external PHY or level-shifting components are required - only standard USB termination resistors and proper PCB routing per TI's layout guidelines are needed.
What low-power modes are available on the TM4C1231D5PZI7R?
The TM4C1231D5PZI7R supports Sleep, Deep-Sleep, and Hibernate modes. Hibernate mode draws <1 µA with VBAT applied and retains 2 KB RAM plus RTC functionality. Deep-Sleep disables the main oscillator but keeps the hibernate module active, while Sleep mode preserves full register context with faster wake-up latency.
Is the TM4C1231D5PZI7R pin-compatible with other TM4C123x variants?
No - the TM4C1231D5PZI7R uses a 100-pin LQFP package (PZ), while other TM4C123x parts like TM4C123GH6PGE also use PZ but differ in peripheral mapping and feature enablement. Pinouts are mechanically identical but functional assignments vary; migration requires verification of signal routing and firmware adaptation per datasheet section 1.4.
What development tools are officially supported for the TM4C1231D5PZI7R?
Texas Instruments officially supports the TM4C1231D5PZI7R with Code Composer Studio (CCS) IDE, TI's TivaWare™ C Series software suite, and the EK-TM4C123GXL LaunchPad development kit. Debugging is enabled via SWD using XDS110-class probes, and TI provides validated driver libraries for USB, ADC, PWM, and hibernate modules.
TM4C1231D5PZI7R 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 24K 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:
TM4C1231D5PZI7R FAQ
1.How can I place an order for TM4C1231D5PZI7R through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231D5PZI7R 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 TM4C1231D5PZI7R reliable?
The price and inventory of TM4C1231D5PZI7R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231D5PZI7R is usually 5 days.
3.What payment methods are accepted for TM4C1231D5PZI7R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231D5PZI7R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231D5PZI7R?
TM4C1231D5PZI7R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231D5PZI7R 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 TM4C1231D5PZI7R?
For technical support, including TM4C1231D5PZI7R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231D5PZI7R requirements.
6.How does Aetrix verify that TM4C1231D5PZI7R is sourced from the original manufacturer or authorized distributors?
All TM4C1231D5PZI7R 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 TM4C1231D5PZI7R meets industry standards.
7.What is the process for return or replacement of TM4C1231D5PZI7R?
All TM4C1231D5PZI7R units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231D5PZI7R, 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 TM4C1231D5PZI7R part is unused and in its original packaging.
Return procedure for TM4C1231D5PZI7R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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