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Texas Instruments F28M35H22C1RFPS
- Part No.:
- F28M35H22C1RFPS
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 144-TQFP Exposed Pad
- Datasheet:
-
F28M35H22C1RFPS.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 144TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,735
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Product details
Overview
F28M35H22C1RFPS from Texas Instruments is a dual-core Concerto™ microcontroller integrating an Arm® Cortex®-M3 master subsystem (100 MHz) and a TMS320C28x real-time control subsystem (75 MHz), with 256 KB flash (ECC), 32 KB RAM (ECC/parity), dual 12-bit ADCs (2.88 MSPS, 20 channels), six comparators with integrated DACs, and 10/100 ENET 1588 MII - deployed in solar string inverters and industrial AC-DC power conversion.
For engineers reviewing the F28M35H22C1RFPS datasheet, F28M35H22C1RFPS pinout, F28M35H22C1RFPS application, or F28M35H22C1RFPS equivalent, key selection criteria include dual-core clock coordination (Cortex-M3 @100 MHz / C28x @75 MHz), shared 64 KB RAM, HTQFP-144 PowerPAD thermal packaging, and safety features including ECC memory, dual watchdogs, and IPC message RAM for deterministic interprocessor communication.
Technical Context
The F28M35H22C1RFPS implements a tightly coupled dual-subsystem architecture: the Cortex-M3 handles high-level communications (USB-OTG + PHY, Ethernet 1588, 2× CAN, 5× UART, 4× SSI, 2× I²C) while the C28x executes deterministic real-time control (9× ePWM with 16 HRPWM outputs, 6× eCAP, 3× eQEP, VCU-accelerated math). Interprocessor communication uses 32-channel hardware IPC with 2 KB dedicated message RAM per subsystem.
Its analog subsystem integrates two independent 12-bit ADCs (each up to 10 channels, 2.88 MSPS aggregate), four sample-and-hold circuits, and six comparator-DAC units - all synchronized via shared clocking resources and accessible by both cores through the AHB/APB bus matrix and EPI arbitration. Voltage domains are segregated: 1.2-V digital, 1.8-V analog, and 3.3-V I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Cores | Dual-core: Arm Cortex-M3 @100 MHz + TMS320C28x @75 MHz - enables concurrent communication stack execution and hard real-time PWM control without resource contention. |
| Flash Memory | 256 KB with ECC - ensures firmware integrity in industrial environments subject to radiation or voltage transients. |
| RAM | 32 KB total (16 KB ECC + 16 KB parity) + 64 KB shared RAM - supports secure code/data separation and cross-core data exchange buffers. |
| ADC Performance | Dual 12-bit ADCs, 2.88 MSPS aggregate sampling rate, 20 total channels - enables simultaneous current/voltage sensing across multi-phase power stages. |
| Control Peripherals | 9× ePWM modules (18 outputs, 16 high-resolution), 6× eCAP, 3× eQEP - delivers precise timing for motor phase commutation, grid synchronization, and fault response under 100 ns jitter. |
| Communication Interfaces | 10/100 ENET 1588 MII, USB OTG + PHY, 2× D_CAN, 5× UART, 4× SSI, 2× I²C - supports time-sensitive networking, fieldbus bridging, and host-device connectivity in single-chip systems. |
| Package | 144-pin HTQFP (RFP PowerPAD™), 20.0 mm × 20.0 mm - provides low thermal resistance (θJA = 26.5°C/W) for convection-cooled industrial power electronics. |
Pinout & Package
144-pin RFP PowerPAD™ Thermally Enhanced Thin Quad Flatpack (HTQFP) with exposed thermal pad soldered to PCB ground plane; requires thermal vias and surface copper pour for junction-to-board thermal management per TI SLMA002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD12 / VDD18 / VDDIO / VDDA1 / VDDA2 | Power supply inputs | Separate 1.2-V digital core, 1.8-V analog, 3.3-V I/O, and dual 3.3-V analog module rails - enable noise isolation and independent power sequencing. |
| ADC1INA0–ADC1INA7, ADC1INB0–ADC1INB7, ADC2INA0–ADC2INA7, ADC2INB0–ADC2INB7 | Analog inputs | 20-channel differential-capable ADC input set (10 per module) - supports simultaneous sampling of voltage, current, and temperature across three-phase topologies. |
| C_EPWM1A–C_EPWM9B | PWM outputs | 18 dedicated ePWM output pins (16 HRPWM-capable) - drive gate drivers directly with programmable dead-time, trip-zone protection, and synchronized start-of-conversion triggers. |
| M_CAN0RX/M_CAN0TX, M_CAN1RX/M_CAN1TX | CAN transceiver interfaces | Two isolated D_CAN modules with pin-boot capability - support distributed control node communication and firmware updates over industrial CAN networks. |
| M_MIITXD0–M_MIITXD3, M_MIIRXD0–M_MIIRXD3, M_MIIRXDV, M_MIIRXER, M_MIIRXCK | EMAC MII signals | Full 4-bit MII interface with 1588 timestamping support - enables IEEE 1588v2 precision time protocol for synchronized multi-inverter systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-core IPC with 32 handshaking channels | Enables deterministic, low-latency coordination between communication and control tasks without software polling or shared-memory race conditions. |
| Viterbi/Complex Math/CRC Unit (VCU) | Accelerates FFT, CRC-32, and complex arithmetic in C28x domain - reduces CPU load for grid impedance estimation and harmonic analysis. |
| Glitch-free GPIO with configurable pull-up/down | Prevents spurious edge detection during power-up/power-down sequences - critical for safe initialization of gate drivers and contactors. |
| 128-bit password security zones (2 on M3, 1 on C28x) | Allows independent code protection for bootloader, communication stack, and control algorithms - meets IEC 61508 SIL-2 partitioning requirements. |
| Micro CRC (µCRC) module | Hardware-accelerated checksum generation for firmware image validation and RAM integrity checking - reduces boot-time verification overhead by >90% vs. software CRC. |
Applications
| String Inverter Control | Solar DC Optimizer Interface |
|---|---|
Use Scenario: Managing MPPT tracking and grid-synchronized DC-AC conversion in photovoltaic string-level inverters. IC Role / Device Role / Timing Role: F28M35H22C1RFPS serves as the primary controller - Cortex-M3 runs Modbus/TCP stack and web server; C28x executes 20-kHz interleaved LLC/PWM control with cycle-by-cycle current limiting. Use Value: Dual-core determinism eliminates latency between sensor sampling (ADC), computation (VCU-accelerated MPPT), and actuation (HRPWM), achieving <±0.1% THD at full load. |
Use Scenario: Bidirectional communication and local power regulation between PV module and central inverter in distributed architectures. IC Role / Device Role / Timing Role: F28M35H22C1RFPS acts as intelligent node controller - Cortex-M3 handles DALI/PLC uplink and diagnostics; C28x manages DC-DC buck/boost regulation with fast transient response. Use Value: Integrated CAN + USB + ADC enables unified commissioning, real-time telemetry, and adaptive voltage clamping - reducing BOM count by 3 discrete ICs. |
| Industrial AC-DC Power Supply | Three-Phase UPS System |
Use Scenario: High-efficiency, digitally controlled front-end rectification and PFC in factory automation power supplies. IC Role / Device Role / Timing Role: F28M35H22C1RFPS functions as system-on-chip controller - Cortex-M3 manages fan speed, temperature logging, and PMBus interface; C28x executes predictive current-mode PFC with 100-ns resolution timing. Use Value: Shared 64 KB RAM allows seamless transfer of RMS voltage/current measurements from ADC to PFC loop - enabling adaptive line-voltage feedforward without external FIFO. |
Use Scenario: Real-time battery backup switching, sine-wave synthesis, and load balancing in mission-critical data center UPS units. IC Role / Device Role / Timing Role: F28M35H22C1RFPS operates as master timing and control hub - Cortex-M3 synchronizes multiple inverters via 1588; C28x generates 3-phase SPWM with zero-crossing lock and harmonic injection. Use Value: Dual 12-bit ADCs sample all six phase currents simultaneously - enabling instantaneous vector control and sub-cycle fault shutdown (<2 µs response). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-core real-time control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| F28M35H52C1RFPS | 512 KB flash (vs. 256 KB), 100 MHz C28x (vs. 75 MHz), same package and peripheral set | Supports larger communication stacks (e.g., full IPv6 + TLS) and higher-bandwidth control loops (e.g., >50 kHz SiC gate driving) | Select when firmware complexity or control bandwidth exceeds F28M35H22C1RFPS capacity; otherwise, F28M35H22C1RFPS offers optimal cost/performance for 20–30 kHz applications. |
| TMS320F28388D | Dual C28x cores (no Arm M3), EtherCAT + Ethernet MAC, no USB/ENET 1588, 1 MB flash, 384 KB RAM | Targeted at motion control with deterministic fieldbus integration; lacks integrated high-level protocol stack capability | Choose for servo drives requiring native EtherCAT slave functionality; avoid if USB device/host, TCP/IP offload, or dual-domain development toolchain is required. |
Compared with F28M35H52C1RFPS and TMS320F28388D, the F28M35H22C1RFPS delivers balanced compute headroom for mid-tier solar and industrial power systems - offering sufficient flash/RAM for certified safety firmware, 1588-compliant time sync, and HRPWM control, while avoiding over-specification that increases cost and thermal design complexity.
Availability
F28M35H22C1RFPS is available at Aetrix Electronics and suitable for solar string inverters, industrial AC-DC power supplies, and three-phase UPS systems requiring stable component supply, long-term lifecycle support, and automotive-grade reliability (AEC-Q100 qualified variant available).
Supply support for F28M35H22C1RFPS 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 specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and real-time control MCUs.
The F28M35H22C1RFPS belongs to TI's Concerto™ family - designed specifically to unify high-level connectivity (Ethernet, USB, CAN) and deterministic real-time control (PWM, ADC, encoder) in single-chip solutions for renewable energy and industrial power systems.
FAQ
What is the maximum operating frequency of each core in the F28M35H22C1RFPS?
The F28M35H22C1RFPS features an Arm Cortex-M3 core rated at 100 MHz and a TMS320C28x core rated at 75 MHz. These frequencies are fixed by the device configuration - unlike some variants, the F28M35H22C1RFPS does not support 150 MHz C28x operation. The dual-core clock coordination is enforced by hardware dividers to maintain synchronous operation and prevent bus contention.
Does the F28M35H22C1RFPS support AEC-Q100 qualification?
The F28M35H22C1RFPS itself is not AEC-Q100 qualified; however, the pin-compatible F28M35H22C1RFPS-Q1 variant (with "Q" suffix) is fully AEC-Q100 Grade 1 qualified (–40°C to +125°C free-air). Both share identical peripherals, memory map, and software compatibility - only temperature grade and qualification documentation differ.
How many analog inputs does the F28M35H22C1RFPS support, and what is their resolution?
The F28M35H22C1RFPS integrates two independent 12-bit analog-to-digital converters (ADC1 and ADC2), supporting up to 20 total input channels (10 per ADC). Each ADC achieves 2.88 MSPS aggregate sampling rate with 347 ns conversion time, and includes dedicated sample-and-hold circuits for simultaneous multi-channel acquisition.
What communication interfaces are available on the F28M35H22C1RFPS?
The F28M35H22C1RFPS provides 10/100 ENET with IEEE 1588 timestamping, USB OTG with integrated PHY, two D_CAN modules, five UARTs, four SSI ports, two I²C buses, and an External Peripheral Interface (EPI). All interfaces are accessible from the Cortex-M3 subsystem, with select peripherals (e.g., SCI, SPI, I²C) also available to the C28x core via shared bus arbitration.
Is the F28M35H22C1RFPS pin-compatible with other F28M35x devices?
Yes - the F28M35H22C1RFPS uses the same 144-pin HTQFP (RFP PowerPAD™) package and identical pinout as F28M35H52C1RFPS, F28M35M52C1RFPS, and F28M35E20B1RFPS. This enables hardware reuse across performance tiers; however, firmware must be validated for flash/RAM size, peripheral enablement, and clock tree differences before migration.
F28M35H22C1RFPS 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:
- 100MHz/150MHz
- Connectivity:
- CANbus, EBI/EMI, Ethernet, I2C, SCI, SPI, SSI, UART/USART, USB, USB OTG
- 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:
- 136KB
- 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:
F28M35H22C1RFPS FAQ
1.How can I place an order for F28M35H22C1RFPS through Aetrix?
Please submit a Request for Quotation (RFQ) for F28M35H22C1RFPS 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 F28M35H22C1RFPS reliable?
The price and inventory of F28M35H22C1RFPS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for F28M35H22C1RFPS is usually 5 days.
3.What payment methods are accepted for F28M35H22C1RFPS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for F28M35H22C1RFPS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for F28M35H22C1RFPS?
F28M35H22C1RFPS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your F28M35H22C1RFPS 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 F28M35H22C1RFPS?
For technical support, including F28M35H22C1RFPS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your F28M35H22C1RFPS requirements.
6.How does Aetrix verify that F28M35H22C1RFPS is sourced from the original manufacturer or authorized distributors?
All F28M35H22C1RFPS 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 F28M35H22C1RFPS meets industry standards.
7.What is the process for return or replacement of F28M35H22C1RFPS?
All F28M35H22C1RFPS units undergo pre-shipment inspection (PSI). If there is an issue with F28M35H22C1RFPS, 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 F28M35H22C1RFPS part is unused and in its original packaging.
Return procedure for F28M35H22C1RFPS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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