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Texas Instruments TM4C1236D5PMIR
- Part No.:
- TM4C1236D5PMIR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
TM4C1236D5PMIR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TM4C1236D5PMIR 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, 8×UART, 2×SSI, 2×I²C, 12-bit ADC (1MSPS), and PWM peripherals. It serves as a main system controller in industrial automation nodes requiring real-time control, connectivity, and analog signal acquisition.
For engineers reviewing the TM4C1236D5PMIR datasheet, TM4C1236D5PMIR pinout, TM4C1236D5PMIR application, or TM4C1236D5PMIR equivalent, key selection criteria include its 128-pin LQFP package, -40°C to +105°C extended temperature grade, USB/CAN dual-protocol support, and hardware floating-point unit for deterministic motor control loops.
Technical Context
The TM4C1236D5PMIR integrates a single-core ARM Cortex-M4F CPU with FPU and MPU, executing Thumb-2 instructions at up to 80 MHz. It features a 32-bit AHB bus matrix connecting flash, SRAM, peripherals, and DMA, enabling concurrent memory and peripheral access without arbitration stalls.
Its system-level integration includes a programmable clock tree with PLL-based core and peripheral clock domains, configurable GPIOs with slew-rate and drive-strength control, and a μDMA controller supporting 32-channel scatter-gather transfers directly between peripherals and memory-reducing CPU load during high-bandwidth UART/ADC operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4F with hardware FPU and MPU - enables real-time floating-point math and memory protection for safety-critical firmware. |
| Max Clock Speed | 80 MHz - supports deterministic 10 µs interrupt latency and sub-100 ns timer resolution for closed-loop motor control. |
| Flash / SRAM | 256 KB flash / 32 KB SRAM - sufficient for bootloader + application + OTA update staging in resource-constrained edge devices. |
| Analog ADC | 12-bit, 1 MSPS, 12-channel - provides 1 µs conversion time per sample for fast transient detection in power monitoring. |
| Communication | USB 2.0 OTG + CAN 2.0A/B + 8×UART + 2×SSI + 2×I²C - enables simultaneous host/device USB, fieldbus CAN, and sensor interface protocols. |
| Package & Temp | 128-pin LQFP, -40°C to +105°C - suitable for industrial PLC modules and motor drives operating in uncontrolled thermal environments. |
| DMA Channels | 32-channel μDMA - offloads data movement from CPU during continuous ADC sampling or UART streaming, preserving 80%+ CPU bandwidth. |
Pinout & Package
TM4C1236D5PMIR is housed in a 128-pin LQFP (14 mm × 14 mm, 0.4 mm pitch) package with exposed thermal pad. Pin functions are defined across five GPIO ports (A–E), plus dedicated analog, USB, CAN, and debug interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VDDA / VDDC | Power supply rails | VDD (3.3 V digital), VDDA (3.3 V analog), VDDC (1.2 V core) - require separate low-noise filtering; VDDA must be ≥ VDD for ADC accuracy. |
| USB0VBUS / USB0ID | USB OTG detection | Enables automatic host/peripheral mode switching based on VBUS presence and ID pin state - no external level shifters needed. |
| CAN0RX / CAN0TX | CAN physical layer I/O | Differential pair compliant with ISO 11898-2; requires external transceiver but integrates CAN protocol engine and message RAM. |
| PD0 / PD1 | UART0 RX/TX | Configurable as UART0 I/O or GPIO; internal pull-up/pull-down and slew-rate control allow direct RS-232/RS-485 interface with external drivers. |
| JTAG/SWD | Debug interface | TCK/TMS/TDI/TDO/nTRST/SWCLK/SWDIO - supports both JTAG and SWD protocols; SWD uses only two pins for full debug access. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-Point Unit (FPU) | Hardware IEEE 754 single-precision execution - reduces PID loop computation time from >100 cycles to <12 cycles, enabling 20 kHz control rates. |
| USB 2.0 OTG Controller | Integrated PHY and MAC with 1 KB endpoint FIFO - supports CDC ACM, HID, and MSC classes without external USB IC or glue logic. |
| Programmable Clock System | Multiple PLLs and dividers with run-time reconfiguration - allows dynamic clock scaling (e.g., 80 MHz for compute, 1 MHz for sleep) without reset. |
| GPIO Configuration Registers | Per-pin control of drive strength (2/4/8 mA), slew rate (fast/slow), and open-drain mode - eliminates need for external current-limiting resistors in LED or relay driver circuits. |
| ROM Bootloader | Factory-programmed 4 KB ROM with UART/USB/I²C boot modes - enables firmware recovery via serial port if flash is corrupted, no external programmer required. |
Applications
| Industrial Motor Control | Smart Grid Sensor Node |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC compressors using space-vector PWM and current sensing. IC Role / Device Role / Timing Role: Real-time system controller executing FOC algorithm, generating PWM outputs, sampling ADC channels, and managing CAN bus communication with master PLC. Use Value: Hardware FPU and 80 MHz clock enable 20 kHz PWM update rate with <5 µs jitter; integrated CAN reduces BOM by eliminating external transceiver. |
Use Scenario: Distributed metering node measuring voltage, current, and temperature in medium-voltage distribution cabinets. IC Role / Device Role / Timing Role: Data acquisition hub acquiring synchronized 12-bit ADC samples at 100 kSPS, timestamping events via RTC, and transmitting over isolated RS-485. Use Value: 12-channel ADC with hardware averaging achieves 14-bit effective resolution; μDMA transfers samples to SRAM while CPU processes prior frame. |
| Programmable Logic Controller (PLC) I/O Module | USB-Capable Industrial Gateway |
Use Scenario: DIN-rail mounted I/O expansion module with 16 digital inputs, 8 relay outputs, and analog input conditioning. IC Role / Device Role / Timing Role: Central MCU managing opto-isolated input scanning, relay coil timing, analog sensor calibration, and Modbus RTU over UART. Use Value: 8×UART peripherals allow independent Modbus, debug, and diagnostics ports; GPIO commit registers prevent spurious output transitions during firmware updates. |
Use Scenario: Edge gateway aggregating data from CAN-enabled machinery and exposing it via USB mass storage or CDC ACM to host PC or HMI. IC Role / Device Role / Timing Role: Dual-role USB controller acting as device (for firmware upload) and host (for USB flash drive logging), while bridging CAN messages to USB endpoints. Use Value: Integrated USB PHY and descriptor engine eliminate external USB IC; USB suspend/resume handling preserves CAN message integrity during host sleep/wake cycles. |
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, 256 KB flash, but 144-pin TQFP, higher SRAM (64 KB), no CAN, added Ethernet MAC | Better suited for networked HMI or gateway designs where Ethernet is primary; lacks CAN for fieldbus integration | Select TM4C123GH6PM when Ethernet interface and larger SRAM outweigh CAN requirement and LQFP footprint constraints. |
| STM32F407VGT6 | ARM Cortex-M4F @ 168 MHz, 1 MB flash, 192 KB SRAM, no native USB OTG PHY, requires external USB transceiver | Higher performance and memory for complex GUI or audio processing; lacks integrated USB PHY and CAN FD support | Select STM32F407VGT6 when maximum CPU throughput and large code size dominate over USB plug-and-play and CAN 2.0B compatibility. |
Compared with TM4C1236D5PMIR, TM4C123GH6PM trades CAN for Ethernet and larger SRAM in a bigger package, while STM32F407VGT6 offers higher clock speed and memory but requires external components for USB and lacks native CAN 2.0B - making TM4C1236D5PMIR optimal for compact, CAN-connected industrial controllers needing USB device/host duality.
Availability
TM4C1236D5PMIR is available at Aetrix Electronics and suitable for industrial motor control, smart grid sensor nodes, and programmable logic controller (PLC) I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TM4C1236D5PMIR 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, embedded processing, and wireless technologies for industrial, automotive, and consumer markets since 1930.
The TM4C1236D5PMIR belongs to TI's Tiva C Series microcontrollers, designed specifically for cost-sensitive, real-time industrial applications demanding mixed-signal integration, deterministic timing, and fieldbus connectivity without external support ICs.
FAQ
What is the maximum operating temperature range for the TM4C1236D5PMIR?
The TM4C1236D5PMIR is rated for operation from -40°C to +105°C ambient temperature. This extended industrial temperature range is validated per TI's production test flow and supports deployment in motor drives, outdoor metering, and factory-floor control systems where enclosure temperatures exceed standard commercial limits. The TM4C1236D5PMIR maintains full specification compliance-including ADC accuracy, flash write endurance, and USB timing-across this full range.
Does the TM4C1236D5PMIR include an integrated USB PHY?
Yes, the TM4C1236D5PMIR integrates a full-speed USB 2.0 OTG PHY with internal termination and voltage regulation. It supports both device and host roles without external PHY components, enabling direct connection to USB cables via standard Type-A or Mini-B connectors. The TM4C1236D5PMIR's USB controller includes dedicated endpoint FIFOs and descriptor handling logic, reducing firmware overhead compared to MCU+external-PHY solutions.
How many CAN interfaces does the TM4C1236D5PMIR support?
The TM4C1236D5PMIR includes one fully compliant CAN 2.0A/B controller with 32-message object RAM, programmable bit timing, and automatic retransmission. It supports standard (11-bit) and extended (29-bit) identifiers, loopback testing, and error frame generation. The TM4C1236D5PMIR requires an external CAN transceiver (e.g., SN65HVD230) for physical layer signaling, but all protocol stack processing occurs on-chip.
Is the TM4C1236D5PMIR pin-compatible with other Tiva C Series MCUs?
No, the TM4C1236D5PMIR is not pin-compatible with other Tiva C Series MCUs such as the TM4C123GH6PM or TM4C1294NCPDT. Its 128-pin LQFP footprint and specific peripheral mapping (e.g., USB/CAN placement, ADC channel assignment) differ across variants. Migration requires PCB layout changes; however, firmware reuse is high due to identical register maps and TivaWare peripheral driver libraries.
What debug interfaces are supported by the TM4C1236D5PMIR?
The TM4C1236D5PMIR supports both JTAG and Serial Wire Debug (SWD) interfaces using dedicated pins (TCK/TMS/TDI/TDO/nTRST or SWCLK/SWDIO). SWD mode uses only two pins and provides full debug access including halt/resume, memory inspection, and real-time variable watch - ideal for space-constrained designs. The TM4C1236D5PMIR also supports In-Circuit Debug via TI's XDS110 or third-party CMSIS-DAP adapters.
TM4C1236D5PMIR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- Tiva™ C
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- 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 OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, WDT
- Number of I/O:
- 49
- 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:
TM4C1236D5PMIR FAQ
1.How can I place an order for TM4C1236D5PMIR through Aetrix?
Please submit a Request for Quotation (RFQ) for TM4C1236D5PMIR 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 TM4C1236D5PMIR reliable?
The price and inventory of TM4C1236D5PMIR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM4C1236D5PMIR is usually 5 days.
3.What payment methods are accepted for TM4C1236D5PMIR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM4C1236D5PMIR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM4C1236D5PMIR?
TM4C1236D5PMIR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM4C1236D5PMIR 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 TM4C1236D5PMIR?
For technical support, including TM4C1236D5PMIR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM4C1236D5PMIR requirements.
6.How does Aetrix verify that TM4C1236D5PMIR is sourced from the original manufacturer or authorized distributors?
All TM4C1236D5PMIR 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 TM4C1236D5PMIR meets industry standards.
7.What is the process for return or replacement of TM4C1236D5PMIR?
All TM4C1236D5PMIR units undergo pre-shipment inspection (PSI). If there is an issue with TM4C1236D5PMIR, 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 TM4C1236D5PMIR part is unused and in its original packaging.
Return procedure for TM4C1236D5PMIR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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