My Inquiry
My Account
Texas Instruments TM4C1231D5PMIR
- Part No.:
- TM4C1231D5PMIR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1231D5PMIR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,570
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TM4C1231D5PMIR from Texas Instruments is an ARM Cortex-M4F-based microcontroller with 80 MHz operation, 256 KB flash, 32 KB SRAM, and integrated USB 2.0 OTG, CAN, PWM, ADC (12-bit, 1MSPS), and multiple UART/SPI/I²C interfaces. It serves as a main system controller in industrial motor drives, smart sensors, and USB-connected embedded gateways.
For engineers reviewing the TM4C1231D5PMIR datasheet, TM4C1231D5PMIR pinout, TM4C1231D5PMIR application, or TM4C1231D5PMIR equivalent, key selection criteria include its 80 MHz Cortex-M4F core with FPU, 12-bit 1MSPS ADC with hardware averaging, USB OTG + CAN dual-protocol capability, and 105-pin LQFP package with configurable GPIOs supporting peripheral multiplexing.
Technical Context
The TM4C1231D5PMIR integrates a single-core ARM Cortex-M4F processor with IEEE-754-compliant floating-point unit and 16 KB instruction cache. Its memory subsystem includes 256 KB on-chip flash with error correction, 32 KB SRAM, and 2 KB EEPROM for nonvolatile configuration storage.
Peripherals are tightly coupled via the Advanced Microcontroller Bus Architecture (AMBA) AHB/APB matrix. Real-time control is enabled by eight 32-bit general-purpose timers (including RTC and PWM-capable variants), four UARTs (one with ISO 7816 support), two I²C modules, three SPIs, and a 12-channel μDMA controller with scatter-gather support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F @ 80 MHz with hardware FPU and 16 KB instruction cache |
| Flash Memory | 256 KB with ECC, sector erase, and 100K write/erase cycles |
| SRAM | 32 KB with parity protection and low-latency access |
| ADC | 12-bit, 1 MSPS, 12-channel with hardware sample averaging up to 64x |
| USB Interface | USB 2.0 OTG with integrated PHY and device/host/OTG mode support |
| CAN Interface | One CAN 2.0A/B controller with 32 message objects and FIFO buffering |
| Package | 105-pin LQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, -40°C to +105°C |
Pinout & Package
TM4C1231D5PMIR is housed in a 105-pin LQFP package with exposed thermal pad. Pin functions are fully configurable via GPIO AFSEL and PCTL registers; all digital I/O pins support slew-rate control, pull-up/pull-down, and open-drain modes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Digital (3.3 V), analog (3.3 V), and core (1.2 V) rails - require separate decoupling per datasheet layout guidelines |
| GND, GNDA, GNDC | Ground returns | Analog/digital/core ground separation preserves ADC SNR and reduces switching noise coupling |
| USB0VBUS, USB0ID | USB OTG detection | Enables automatic host/device role negotiation without external level shifters or switches |
| CAN0RX, CAN0TX | CAN physical layer interface | Differential signaling pair compatible with ISO 11898-2 transceivers; supports bit rates up to 1 Mbps |
| SSI0CLK, SSI0FSS, SSI0RX, SSI0TX | SPI master/slave interface | Four-wire synchronous serial bus supporting Motorola/Freescale SPI and TI SSI protocols at up to 20 MHz |
| U0RX, U0TX, U1RX, U1TX | UART transmit/receive | Two independent full-duplex UARTs; U0 supports IrDA and modem handshake signals |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware IEEE-754 single-precision math acceleration enables real-time sensor fusion and PID loop execution without software emulation overhead |
| Hibernate Module | Sub-μA deep-sleep mode with RTC wake-up, battery-backed RAM retention, and external interrupt resume - ideal for battery-powered edge nodes |
| μDMA Controller | 32-channel controller with scatter-gather descriptors eliminates CPU involvement in peripheral-to-memory transfers, freeing cycles for application logic |
| Peripheral Multiplexing | Each GPIO pin supports up to 8 alternate functions; register-controlled mapping allows flexible board design without fixed pin constraints |
| ROM Bootloader | Factory-programmed ROM contains In-Application Programming (IAP) routines and USB/UART-based firmware update capability - no external programmer required |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with current sensing, position feedback, and field-oriented control (FOC). IC Role / Device Role / Timing Role: Main real-time controller executing FOC algorithm, generating PWM outputs, sampling ADC channels, and managing CAN bus communication with HMI. Use Value: 80 MHz Cortex-M4F with FPU delivers deterministic 10–20 μs control loop latency; integrated PWM generator with dead-time insertion simplifies gate driver interface. |
Use Scenario: Wireless environmental sensor node measuring temperature, humidity, and pressure with local data logging and USB/CAN upload. IC Role / Device Role / Timing Role: System-on-chip sensor aggregator performing ADC acquisition, calibration, timestamping, and protocol bridging between analog sensors and host interface. Use Value: On-chip 12-bit 1MSPS ADC with hardware averaging achieves >10-bit effective resolution; hibernate mode draws <1.5 μA while maintaining RTC and 2 KB RAM state. |
| USB-Capable Industrial Gateway | Automotive Diagnostic Tool |
Use Scenario: Field-deployable gateway connecting legacy RS-485 devices to USB-hosted SCADA systems. IC Role / Device Role / Timing Role: Protocol translator and USB device controller handling CDC ACM class enumeration, buffer management, and UART-to-USB packet conversion. Use Value: Integrated USB 2.0 OTG PHY eliminates external transceiver; ROM bootloader enables field firmware updates via standard USB mass storage or CDC interface. |
Use Scenario: Handheld OBD-II diagnostic tool communicating with vehicle ECUs over CAN and displaying results on local LCD. IC Role / Device Role / Timing Role: CAN protocol handler and display controller interfacing with CAN transceiver, touch panel, and graphical LCD via parallel bus or SPI. Use Value: Dedicated CAN controller with 32 message objects supports simultaneous monitoring of multiple ECU IDs; GPIOs support direct 8-bit parallel LCD interface without glue logic. |
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 → 256 KB same), but adds 64 KB EEPROM and 1 MB/s Ethernet MAC; 144-pin TQFP package | Targeted at Ethernet-enabled industrial controllers; lacks USB OTG PHY (requires external PHY) | Select when Ethernet connectivity is required and USB OTG is not needed; requires PCB redesign due to larger package and different pinout |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB flash, 192 KB RAM, no integrated CAN transceiver support, no ROM bootloader | Broader ecosystem and tooling; requires external CAN transceiver and bootloader implementation | Choose for higher clock speed and memory headroom where CAN is optional and USB is handled externally; no drop-in replacement - pinout, power, and peripheral mapping differ significantly |
Compared with TM4C1231D5PMIR, TM4C123GH6PM offers Ethernet but removes USB OTG PHY and increases footprint, while STM32F407VGT6 provides higher performance and memory but demands external CAN/USB components and custom bootloader development - neither is pin-compatible nor functionally identical.
Availability
TM4C1231D5PMIR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and USB-capable industrial gateways requiring stable component supply across multi-year production cycles.
Supply support for TM4C1231D5PMIR 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, specializing in analog, embedded processing, and wireless technologies with over 90 years of innovation in industrial, automotive, and consumer electronics.
The TM4C1231D5PMIR belongs to TI's Tiva C Series, designed specifically for cost-sensitive, real-time embedded applications demanding high integration, low-power operation, and robust peripheral sets - especially where USB, CAN, and analog signal acquisition coexist on a single chip.
FAQ
What is the maximum operating frequency of the TM4C1231D5PMIR?
The TM4C1231D5PMIR operates at a maximum system clock frequency of 80 MHz, derived from its internal PLL locked to a precision 16 MHz crystal oscillator. This frequency is sustained across the full industrial temperature range (-40°C to +105°C) and supports deterministic real-time execution of control algorithms and communication stacks without throttling.
Does the TM4C1231D5PMIR include a hardware floating-point unit?
Yes, the TM4C1231D5PMIR integrates a full IEEE-754-compliant single-precision floating-point unit (FPU) as part of its ARM Cortex-M4F core. This enables efficient execution of trigonometric, exponential, and filtering operations - critical for motor control, sensor fusion, and digital signal processing tasks without software emulation overhead.
Can the TM4C1231D5PMIR operate in low-power hibernate mode with RTC active?
Yes, the TM4C1231D5PMIR supports hibernate mode with sub-μA current draw while retaining RTC functionality, battery-backed RAM (2 KB), and wake-up capability via external interrupts or RTC match events. This mode is validated down to -40°C and enables multi-year battery life in remote sensor and metering applications.
How many UART interfaces does the TM4C1231D5PMIR support, and what advanced features do they include?
The TM4C1231D5PMIR integrates four UART modules. UART0 supports IrDA encoding/decoding, modem handshake (RTS/CTS/DSR/DTR), and ISO 7816 smart-card protocol; UART1–3 support standard asynchronous communication at up to 3 Mbps. All UARTs feature programmable FIFOs, hardware flow control, and automatic baud-rate detection.
Is there factory-programmed firmware in the TM4C1231D5PMIR ROM?
Yes, the TM4C1231D5PMIR includes a 16 KB ROM containing TI's TivaWare™ boot loader, which supports in-application programming (IAP) via UART, USB, or CAN. This eliminates the need for external debug probes during firmware updates and enables secure field upgrades using signed images verified by the ROM bootloader.
TM4C1231D5PMIR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-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:
- 43
- 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:
TM4C1231D5PMIR FAQ
1.How can I place an order for TM4C1231D5PMIR through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1231D5PMIR 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 TM4C1231D5PMIR reliable?
The price and inventory of TM4C1231D5PMIR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1231D5PMIR is usually 5 days.
3.What payment methods are accepted for TM4C1231D5PMIR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1231D5PMIR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1231D5PMIR?
TM4C1231D5PMIR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1231D5PMIR 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 TM4C1231D5PMIR?
For technical support, including TM4C1231D5PMIR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1231D5PMIR requirements.
6.How does Aetrix verify that TM4C1231D5PMIR is sourced from the original manufacturer or authorized distributors?
All TM4C1231D5PMIR 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 TM4C1231D5PMIR meets industry standards.
7.What is the process for return or replacement of TM4C1231D5PMIR?
All TM4C1231D5PMIR units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1231D5PMIR, 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 TM4C1231D5PMIR part is unused and in its original packaging.
Return procedure for TM4C1231D5PMIR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TM4C1231D5PMIR Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
