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Texas Instruments TM4C1231H6PZI7R
- Part No.:
- TM4C1231H6PZI7R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TM4C1231H6PZI7R.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,519
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Product details
Overview
TM4C1231H6PZI7R 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 UARTs, two I²C, two SPI, and USB 2.0 OTG. It operates at 80 MHz and supports -40°C to +105°C industrial temperature range in a 100-pin LQFP package. It serves as a main system controller in motor control, industrial sensing, and USB-connected embedded devices.
For engineers reviewing the TM4C1231H6PZI7R datasheet, TM4C1231H6PZI7R pinout, TM4C1231H6PZI7R application, or TM4C1231H6PZI7R equivalent, key selection criteria include its 80 MHz Cortex-M4F core with FPU, USB OTG capability, hibernation module for low-power operation, and full-featured analog subsystem with hardware averaging and temperature sensor.
Technical Context
The TM4C1231H6PZI7R implements a 32-bit ARM Cortex-M4F processor with single-precision floating-point unit and memory protection unit (MPU), enabling deterministic real-time control with math-intensive operations. Its system-level integration includes a hibernation module with RTC, battery-backed memory, and VDD3ON power mode for sub-μA retention current.
Peripherals are tightly coupled via the μDMA controller supporting 32-channel arbitration, and clocking is managed through a programmable PLL with multiple internal/external sources. Debug is supported via JTAG and SWD interfaces with full CoreSight trace capability using TPIU.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with hardware FPU - enables real-time signal processing and floating-point math without software emulation overhead. |
| Memory | 256 KB Flash + 32 KB SRAM + 2 KB EEPROM - sufficient for complex firmware with data logging and parameter storage without external memory. |
| ADC | 12-bit, 1 MSPS, 12-channel with hardware averaging and internal temperature sensor - supports high-resolution sensor acquisition in noisy industrial environments. |
| USB | USB 2.0 OTG (full-speed) with integrated PHY - allows direct host/peripheral role switching and eliminates need for external transceiver. |
| Temperature Range | -40°C to +105°C - qualified for under-hood automotive, factory-floor PLCs, and outdoor industrial equipment. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - compatible with standard SMT assembly and provides full peripheral pin access including USB D+/D− and hibernate wake pins. |
| Low-Power Mode | Hibernate mode with 1.7 μA typical current - enables battery-powered operation for months using coin-cell backup with RTC and 2 KB retained RAM. |
Pinout & Package
TM4C1231H6PZI7R is housed in a 100-pin LQFP (PZ suffix) package with exposed thermal pad. Pin functions are defined per TI SPMS340E datasheet Rev E, June 2014, Table 4-1 (Pin Assignments) and Figure 1-1 (Pinout Diagram).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDD3 | Power supply inputs | Dedicated analog (VDDA), digital core (VDD), and USB PHY (VDD3) rails - enable clean power separation and noise isolation for mixed-signal operation. |
| USB0DP / USB0DM | USB differential pair | Integrated full-speed USB transceiver pins - require only 27 Ω series resistors and no external PHY; support suspend/resume signaling. |
| HIBERNATE | Hibernate control input | Active-low entry trigger for hibernate mode - enables hardware-initiated deep sleep with RTC wake capability and battery-backed memory retention. |
| RTCCLK / HIBRTCVDD | RTC clock source & backup supply | Accepts 32.768 kHz crystal or external clock; HIBRTCVDD powers RTC domain during main power loss - ensures timekeeping continuity on coin-cell backup. |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO banks with alternate functions | Multi-function pins supporting UART, I²C, SPI, PWM, and analog inputs - allow flexible peripheral mapping without PCB redesign. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware-accelerated single-precision math reduces execution time for PID loops, FFTs, and sensor fusion by >10× vs. software emulation. |
| Hibernate Module | Sub-μA retention with RTC, battery-backed SRAM, and wake-on-external-interrupt - extends battery life in portable instrumentation and remote sensors. |
| μDMA Controller | 32-channel, scatter-gather capable DMA - offloads CPU from high-bandwidth transfers (e.g., ADC → SRAM, UART → buffer), freeing cycles for control tasks. |
| Analog Subsystem | 12-bit ADC with hardware sample averaging, digital comparators, and internal temperature sensor - eliminates need for external signal conditioning in thermal monitoring and motor feedback. |
| USB OTG Support | On-chip PHY and OTG controller - enables dual-role device operation (host/peripheral) and simplifies compliance with USB Battery Charging v1.2 spec. |
Applications
| Industrial Motor Control | USB-Enabled Data Logger |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with current sensing, thermal monitoring, and field-oriented control. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing gate drivers via PWM, sampling ADC channels at 100 kSPS, and communicating status over USB. Use Value: Cortex-M4F FPU delivers real-time vector math; hibernate mode enables safe shutdown during fault events with state retention. | Use Scenario: Portable environmental monitor logging temperature, humidity, and pressure at 1 Hz with local USB mass-storage export. IC Role / Device Role / Timing Role: Sensor hub aggregating I²C sensor data, performing calibration, storing logs in internal EEPROM, and presenting as USB MSC device. Use Value: Integrated USB OTG eliminates external IC; 2 KB EEPROM provides non-volatile log storage without wear leveling overhead. |
| Smart Building Sensor Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Wireless HVAC node measuring ambient temp/humidity, controlling relays, and reporting via Zigbee/Thread (via UART-connected radio). IC Role / Device Role / Timing Role: Central MCU handling sensor reads, relay timing, watchdog supervision, and low-power scheduling with RTC wake intervals. Use Value: Hibernate mode draws 1.7 μA between 10-second wake cycles; GPIOs support direct 24 V DC input detection with Schmitt-trigger inputs. | Use Scenario: DIN-rail mounted I/O expansion module with 8 digital inputs, 4 relay outputs, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol handler and I/O manager interfacing with isolated RS-485 transceivers, debouncing inputs, and driving opto-isolated relay drivers. Use Value: Dual UARTs support simultaneous Modbus master/slave; wide temperature range (-40°C to +105°C) ensures reliability in unconditioned control cabinets. |
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 OTG PHY and has reduced ADC channel count (8 vs. 12) and smaller Flash (256 KB same, but SRAM 32 KB same). | Suitable for space-constrained designs where USB host functionality and full ADC channel count are not required. | Select when board area is critical and USB OTG or all 12 ADC inputs are unnecessary. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB Flash, 192 KB SRAM, no integrated USB PHY (requires external transceiver), different pinout and peripheral register map. | Better suited for high-throughput applications requiring larger code/data space and higher clock speed, but demands additional BOM cost and layout effort for USB interface. | Choose when raw performance and memory headroom outweigh USB integration and toolchain familiarity with TivaWare. |
Compared with TM4C123GH6PM, TM4C1231H6PZI7R offers USB OTG with integrated PHY and full 12-channel ADC - critical for compact USB-peripheral designs. Versus STM32F407VGT6, it trades peak clock speed for lower system cost and simpler USB implementation, making it optimal for cost-sensitive industrial USB devices.
Availability
TM4C1231H6PZI7R is available at Aetrix Electronics and suitable for industrial motor control, USB-connected data loggers, and smart building sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for TM4C1231H6PZI7R 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, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The Tiva C Series - including TM4C1231H6PZI7R - was designed specifically for cost-sensitive, real-time embedded applications requiring USB connectivity, analog integration, and robust industrial temperature operation.
FAQ
What is the maximum operating frequency of the TM4C1231H6PZI7R?
The TM4C1231H6PZI7R operates at a maximum system clock frequency of 80 MHz, achieved via its on-chip PLL configured from an internal oscillator or external crystal. This frequency applies to the Cortex-M4F core, bus matrix, and most peripherals. All timing specifications in the SPMS340E datasheet - including ADC conversion time, UART baud rate accuracy, and GPIO toggle rate - are validated at this 80 MHz condition.
Does the TM4C1231H6PZI7R include an integrated USB physical layer (PHY)?
Yes, the TM4C1231H6PZI7R integrates a full-speed USB 2.0 OTG physical layer (PHY) compliant with USB Specification Revision 2.0. This eliminates the need for an external transceiver. The USB0DP and USB0DM pins connect directly to the USB connector with only 27 Ω series resistors required, and the device supports both host and peripheral roles under TivaWare USB stack control.
What is the hibernate current consumption of the TM4C1231H6PZI7R?
The TM4C1231H6PZI7R achieves a typical hibernate current of 1.7 μA at 25°C with RTC running and 2 KB of SRAM retained, as measured per Section 7.3.7 of the SPMS340E datasheet. This value assumes VBAT supplied via HIBRTCVDD and use of the internal 32.768 kHz oscillator. Actual current may vary slightly with temperature and supply voltage but remains below 5 μA across the full -40°C to +105°C range.
How many ADC channels does the TM4C1231H6PZI7R support, and what is their resolution?
The TM4C1231H6PZI7R features a single 12-bit successive-approximation ADC with up to 12 external input channels (AIN0–AIN11) and one internal temperature sensor channel. It supports programmable sample rates up to 1 MSPS and includes hardware sample averaging (2–64 samples) to improve effective resolution and reduce noise in precision measurement applications.
Is the TM4C1231H6PZI7R pin-compatible with other Tiva C Series microcontrollers?
No, the TM4C1231H6PZI7R is not pin-compatible with other Tiva C Series devices such as the TM4C123GH6PM or TM4C1294NCPDT. It uses a unique 100-pin LQFP (PZ) package with dedicated USB, hibernate, and analog power pins not present in smaller variants. Migration requires PCB redesign; however, software compatibility is high within the TivaWare SDK due to consistent peripheral register mapping.
TM4C1231H6PZI7R 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:
TM4C1231H6PZI7R FAQ
1.How can I place an order for TM4C1231H6PZI7R through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231H6PZI7R 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 TM4C1231H6PZI7R reliable?
The price and inventory of TM4C1231H6PZI7R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231H6PZI7R is usually 5 days.
3.What payment methods are accepted for TM4C1231H6PZI7R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231H6PZI7R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231H6PZI7R?
TM4C1231H6PZI7R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231H6PZI7R 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 TM4C1231H6PZI7R?
For technical support, including TM4C1231H6PZI7R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231H6PZI7R requirements.
6.How does Aetrix verify that TM4C1231H6PZI7R is sourced from the original manufacturer or authorized distributors?
All TM4C1231H6PZI7R 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 TM4C1231H6PZI7R meets industry standards.
7.What is the process for return or replacement of TM4C1231H6PZI7R?
All TM4C1231H6PZI7R units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231H6PZI7R, 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 TM4C1231H6PZI7R part is unused and in its original packaging.
Return procedure for TM4C1231H6PZI7R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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