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Texas Instruments F28M35E20B1RFPS
- Part No.:
- F28M35E20B1RFPS
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 144-TQFP Exposed Pad
- Datasheet:
-
F28M35E20B1RFPS.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 144TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
F28M35E20B1RFPS from Texas Instruments is a dual-core Concerto™ microcontroller integrating an Arm® Cortex®-M3 master subsystem (60 MHz) and a TMS320C28x real-time control subsystem (60 MHz), with 256KB flash (ECC), 32KB RAM (parity/ECC), dual 12-bit ADCs (2.31 MSPS, 20 channels), six comparators with integrated DACs, and two CAN modules. It targets industrial motor drives and solar inverters requiring deterministic control and robust communication.
For engineers reviewing the F28M35E20B1RFPS datasheet, F28M35E20B1RFPS pinout, F28M35E20B1RFPS application, or F28M35E20B1RFPS equivalent, this page delivers verified core speeds, memory partitioning, analog subsystem specs, thermal package details, and validated alternative parts for embedded power electronics design.
Technical Context
The F28M35E20B1RFPS implements a tightly coupled dual-core architecture: the Cortex-M3 handles Ethernet 1588, USB OTG, UARTs, I²C, and SSI for connectivity, while the C28x executes high-precision PWM (9 ePWM modules, 18 outputs), capture (6 eCAP), encoder (3 eQEP), and floating-point math via integrated FPU and VCU. IPC with 32 handshaking channels and 4KB shared message RAM enables deterministic inter-subsystem coordination.
Its analog subsystem features two independent 12-bit ADCs with dedicated sample-and-hold circuits, 10-channel input per ADC, and six comparator-DAC units for fast overcurrent/overvoltage protection. Clocking supports dynamic PLL ratio changes, and voltage domains are segregated (1.2-V digital, 1.8-V analog, 3.3-V I/O) to ensure signal integrity in noisy power-conversion environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cortex-M3 Core Speed | 60 MHz - fixed maximum frequency for this variant; enables real-time protocol stack execution without compromising C28x timing. |
| C28x Core Speed | 60 MHz - synchronized speed with M3 core per device constraints; ensures deterministic PWM update and ADC sampling alignment. |
| Flash Memory | 256 KB ECC - provides error detection/correction for safety-critical firmware storage in industrial environments. |
| ADC Performance | 2.31 MSPS aggregate - dual 12-bit ADCs support simultaneous sampling at 433 ns conversion time for fast current/voltage loop closure. |
| Analog Comparators | 6 units with 10-bit DACs - enable hardware-triggered fault responses (e.g., immediate PWM shutdown) without CPU intervention. |
| Communication Peripherals | 2× CAN, 5× UART, 4× SSI/SPI, 2× I²C - sufficient for multi-protocol fieldbus integration (CANopen, Modbus RTU, SPI sensors) in drive controllers. |
| Package | 144-pin HTQFP (RFP PowerPAD™) - thermally enhanced 20 mm × 20 mm footprint with exposed die pad for PCB-level heat dissipation in enclosed enclosures. |
Pinout & Package
144-pin RFP PowerPAD™ Thermally Enhanced Thin Quad Flatpack (HTQFP) with 20.0 mm × 20.0 mm body size and exposed thermal pad soldered to PCB ground plane for optimal thermal management in high-power applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD12 / VDD18 / VDDIO | Digital/analog I/O supply rails | Three independent supply domains (1.2 V, 1.8 V, 3.3 V) isolate noise-sensitive analog circuitry from digital switching transients. |
| ADC1INA0–ADC1INA7, ADC2INA0–ADC2INA7 | Analog inputs (Group A) | 10-channel per ADC group; supports differential or single-ended acquisition for motor phase current and DC-link voltage sensing. |
| COMP1OUT–COMP6OUT | Comparator digital outputs | Direct GPIO-accessible fault signals used to trigger ePWM trip zones for sub-microsecond overcurrent response. |
| C_EPWM1A–C_EPWM9B | C28x PWM outputs | 18 total outputs (16 high-resolution); enable interleaved three-phase inverter gate drive with dead-time insertion and fault blanking. |
| M_CAN0RX/M_CAN0TX, M_CAN1RX/M_CAN1TX | CAN bus interface | Two independent D_CAN modules support redundant fieldbus communication or separate control/monitoring networks. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-core IPC with 32 channels | Enables lockstep or asynchronous task partitioning between communication (M3) and control (C28x) without shared memory contention. |
| Hardware Viterbi/FFT/CRC accelerator (VCU) | Offloads complex math from C28x CPU, freeing cycles for real-time PWM modulation and observer-based position estimation. |
| Glitch-free GPIO with programmable pull-up/down | Ensures stable I/O states during power-up/power-down sequences critical for safe startup of motor drives and inverters. |
| Shared 64KB RAM (parity) | Provides high-bandwidth data exchange buffer for sensor fusion, waveform logging, or firmware OTA updates across both subsystems. |
| EMAC MII interface (no PHY) | Supports external Ethernet PHY connection for industrial Ethernet protocols (EtherNet/IP, PROFINET) with IEEE 1588 timestamping capability. |
Applications
| Industrial AC-DC Power Supply | Servo Drive Control Module |
|---|---|
|
Use Scenario: High-efficiency, digitally controlled AC-DC front-end with PFC and isolated DC-DC stages. IC Role / Device Role / Timing Role: C28x executes fast inner-loop current control and voltage regulation; Cortex-M3 manages communication, monitoring, and thermal management. Use Value: Dual-core separation allows concurrent execution of safety-critical control loops and non-deterministic network tasks without jitter. |
Use Scenario: Precision position/velocity control of permanent magnet synchronous motors in robotics and CNC systems. IC Role / Device Role / Timing Role: C28x runs field-oriented control (FOC) with 60 MHz PWM update rate; Cortex-M3 handles EtherCAT slave stack and HMI interface. Use Value: Integrated eQEP and eCAP modules directly interface with resolver/encoder feedback, eliminating external interface ICs. |
| String Inverter for Solar PV | DC-input BLDC Motor Drive |
|
Use Scenario: MPPT tracking and grid-synchronization for residential solar string inverters up to 5 kW. IC Role / Device Role / Timing Role: C28x performs high-frequency MPPT algorithms and grid-tie inverter control; Cortex-M3 handles SunSpec Modbus TCP and anti-islanding detection. Use Value: Dual 12-bit ADCs acquire DC input voltage/current and AC output voltage/current simultaneously with hardware synchronization. |
Use Scenario: Closed-loop commutation and torque control of brushless DC motors in HVAC blowers and electric power tools. IC Role / Device Role / Timing Role: C28x executes six-step or FOC commutation using ePWM and eCAP; Cortex-M3 manages battery state-of-charge and CAN diagnostics. Use Value: Six comparator-DAC units provide independent overvoltage, overcurrent, and overtemperature trip signals routed directly to PWM trip zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| F28M35M22CRFP | Same 60 MHz dual-core speeds, identical 256KB flash/32KB RAM, but lacks ENET MII and USB OTG peripherals. | Targeted at cost-sensitive motor drives where Ethernet/USB are unnecessary; retains full analog and PWM capability. | Select when Ethernet and USB connectivity are not required, reducing BOM cost and simplifying layout. |
| F28M35H22CRFP | Higher Cortex-M3 speed (100 MHz) and C28x speed (75 MHz); includes ENET 1588 MII and USB OTG + PHY. | Suitable for applications demanding higher protocol stack throughput or precise time-synchronized networking (e.g., distributed drives). | Choose when IEEE 1588 time synchronization or USB device/host functionality is mandatory for system architecture. |
Compared with F28M35M22CRFP, F28M35E20B1RFPS offers identical control performance but omits Ethernet/USB-making it ideal for isolated control nodes. Versus F28M35H22CRFP, it trades connectivity bandwidth for lower power and thermal footprint in space-constrained inverters.
Availability
F28M35E20B1RFPS is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, servo drive control modules, and solar string inverters requiring stable component supply across extended production lifecycles.
Supply support for F28M35E20B1RFPS 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 for industrial, automotive, and communications markets.
The F28M35x Concerto™ family was designed to unify real-time control and communication in a single chip-enabling system consolidation in power electronics, motor drives, and renewable energy systems without sacrificing determinism or bandwidth.
FAQ
What is the maximum operating junction temperature for F28M35E20B1RFPS?
The F28M35E20B1RFPS is rated for –40°C to 105°C junction temperature (T grade). This specification is confirmed in the device comparison table and thermal resistance documentation for the RFP PowerPAD package, ensuring reliable operation in industrial enclosures with passive cooling.
Does F28M35E20B1RFPS support Ethernet connectivity?
No, F28M35E20B1RFPS does not include the 10/100 ENET 1588 MII peripheral. This omission is explicitly documented in Table 5-1 of the datasheet, distinguishing it from H- and M-series variants. External Ethernet PHYs must be interfaced via GPIO or EPI if required.
How many high-resolution PWM outputs does F28M35E20B1RFPS provide?
F28M35E20B1RFPS provides 16 high-resolution PWM outputs across its nine ePWM modules. This is specified in the device comparison table under "High-Resolution PWM (HRPWM) outputs" and aligns with the C28x subsystem's capability for sub-nanosecond duty-cycle resolution.
Is USB OTG functionality available on F28M35E20B1RFPS?
No, F28M35E20B1RFPS excludes the USB OTG + PHY peripheral. The datasheet's device comparison table confirms USB OTG is absent in the E20B variant, unlike H52C/H22C/M52C families. System-level USB connectivity requires external USB controller ICs.
What analog input channels are supported by the dual ADCs in F28M35E20B1RFPS?
F28M35E20B1RFPS supports 20 total analog input channels-10 per 12-bit ADC module (ADC1 and ADC2)-with dedicated sample-and-hold circuits. Each ADC accepts inputs on pins ADC1INA0–ADC1INA7, ADC1INB0–ADC1INB7, ADC2INA0–ADC2INA7, and ADC2INB0–ADC2INB7 as defined in Section 6.2.1.
F28M35E20B1RFPS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 144-TQFP Exposed Pad
- Series:
- C2000™ C28x + ARM® Cortex® M3 Concerto™
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- C28x/ARM® Cortex®-M3
- Core Size:
- 32-Bit Dual-Core
- Speed:
- 60MHz/60MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, McBSP, SCI, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 74
- Program Memory Size:
- 256KB/256KB
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 72KB
- Voltage - Supply (Vcc/Vdd):
- 1.2V, 1.8V, 3.3V
- Data Converters:
- A/D 20x12b
- Oscillator Type:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
F28M35E20B1RFPS FAQ
1.How can I place an order for F28M35E20B1RFPS through Aetrix?
Please submit a Request for Quotation (RFQ) for F28M35E20B1RFPS 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 F28M35E20B1RFPS reliable?
The price and inventory of F28M35E20B1RFPS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for F28M35E20B1RFPS is usually 5 days.
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F28M35E20B1RFPS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your F28M35E20B1RFPS 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 F28M35E20B1RFPS?
For technical support, including F28M35E20B1RFPS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your F28M35E20B1RFPS requirements.
6.How does Aetrix verify that F28M35E20B1RFPS is sourced from the original manufacturer or authorized distributors?
All F28M35E20B1RFPS 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 F28M35E20B1RFPS meets industry standards.
7.What is the process for return or replacement of F28M35E20B1RFPS?
All F28M35E20B1RFPS units undergo pre-shipment inspection (PSI). If there is an issue with F28M35E20B1RFPS, 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 F28M35E20B1RFPS part is unused and in its original packaging.
Return procedure for F28M35E20B1RFPS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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