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Texas Instruments CC3235SF12RGKR
- Part No.:
- CC3235SF12RGKR
- Manufacturer:
- Texas Instruments
- Category:
- RF Transceiver ICs
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
CC3235SF12RGKR.pdf
- Description:
- IC RF TXRX+MCU WIFI 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,865
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Product details
Overview
CC3235SF12RGKR from Texas Instruments is a dual-band Wi-Fi® and Bluetooth®-coexistent wireless microcontroller SoC integrating an Arm® Cortex®-M4 application processor (80MHz), 256KB RAM, 1MB on-chip executable Flash, dual-band 2.4/5GHz 802.11a/b/g/n radio, hardware cryptographic accelerators (AES, SHA, CRC), and industrial-grade temperature support (–40°C to +85°C) for secure IoT edge nodes.
For engineers reviewing the CC3235SF12RGKR datasheet, CC3235SF12RGKR pinout, CC3235SF12RGKR application, or CC3235SF12RGKR equivalent, key selection considerations include integrated Flash size, FIPS 140-2 Level 1 certification, dual-band TX/RX sensitivity (–96dBm @2.4GHz, –92dBm @5GHz), low-power deep sleep (120µA), and VQFN-64 package compatibility with TI's SimpleLink™ MCU platform.
Technical Context
The CC3235SF12RGKR implements a two-subsystem architecture: a user-programmable Arm® Cortex®-M4 core running application firmware in 1MB Flash and 256KB RAM, and a dedicated ROM-based network processor handling full TCP/IP stack (IPv4/IPv6), 16 secure TLS v1.2 sockets, Wi-Fi security protocols (WPA3 Personal/Enterprise), and RF baseband/MAC functions - fully offloading host MCU tasks.
Its power-management subsystem integrates three independent DC/DC regulators (digital, PA, analog), supports shutdown (1µA), hibernate (4.5µA), and LPDS (120µA) modes, and enables antenna selection via SOP0/SOP1 pins for dual-band RF path control - all coordinated through hardware-accelerated crypto engines and secure boot verification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm® Cortex®-M4 at 80MHz - executes real-time application logic with deterministic timing |
| Memory | 256KB RAM + 1MB executable Flash - enables standalone operation without external memory |
| Wi-Fi Bands | 2.4GHz and 5GHz 802.11a/b/g/n - supports dual-band roaming and interference avoidance |
| RX Sensitivity | –96dBm @2.4GHz (1 DSSS), –92dBm @5GHz (6 OFDM) - ensures robust link budget in noisy environments |
| TX Power | 18.0dBm @2.4GHz, 18.1dBm @5GHz - meets regulatory output limits while maximizing range |
| Security | FIPS 140-2 Level 1 certified - validates cryptographic module integrity for government/compliance-critical deployments |
| Power Modes | Shutdown: 1µA, Hibernate: 4.5µA, LPDS: 120µA - extends battery life in always-on sensor nodes |
Pinout & Package
CC3235SF12RGKR uses a 64-pin VQFN (RGK) package measuring 9.0mm × 9.0mm with 0.5mm pitch and exposed thermal pad (GND_TAB). Pin functions are highly multiplexed and configured via register control; JTAG pins (TCK/TMS/TDO/TDI) share GPIO functionality but default to debug mode at boot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nRESET | Master chip reset input | Active-low asynchronous reset - must be held low until VBAT stabilizes to prevent unintended wake-up |
| WLAN_XTAL_P/N | 40MHz crystal interface | Differential clock input for Wi-Fi RF synthesizer - requires external 40MHz fundamental-mode crystal |
| RTC_XTAL_P/N | 32.768kHz crystal interface | Low-power real-time clock reference - supports hibernate timekeeping with <5ppm stability |
| SOP0/SOP1 | Configuration sense-on-power | GPIO-controlled boot mode selection and 5GHz RF switch control - determines antenna path at power-up |
| A_TX/A_RX | 5GHz RF transmit/receive | Dedicated 5GHz differential RF paths - require impedance-matched 50Ω routing and BPF filtering |
| RF_BG | 2.4GHz RF transceiver | Single-ended 2.4GHz TX/RX port - supports coexistence with BLE via COEX_IO signaling |
Key Features
| Feature | Design Value |
|---|---|
| Dual-band Wi-Fi + BLE coexistence | Hardware-level RF arbitration via COEX_IO signals - eliminates protocol-level contention in multi-radio systems |
| FIPS 140-2 Level 1 certification | Validated cryptographic engine implementation - satisfies federal security requirements for device identity and data protection |
| Secure boot & tamper detection | ROM-based boot loader verifies signed application image and detects runtime memory corruption - prevents unauthorized firmware execution |
| Antenna selection support | Dedicated SOP0/SOP1 pins control external SPDT RF switch - enables dynamic band-specific antenna switching |
| Hostless mode | Network processor autonomously transmits preconfigured templates (e.g., keep-alive packets) - reduces MCU wake-ups and power consumption |
Applications
| Smart HVAC Systems | Video Doorbells |
|---|---|
Use Scenario: Wireless thermostat and zone controller communicating with cloud-based energy management platforms over TLS-secured MQTT. IC Role / Device Role / Timing Role: Dual-band Wi-Fi SoC providing application processing, secure OTA updates, and low-latency sensor data transmission. Use Value: Integrated 1MB Flash stores full firmware and certificates; FIPS-certified crypto ensures HIPAA-compliant data encryption in residential HVAC networks. | Use Scenario: Battery-powered doorbell capturing motion-triggered video and streaming encrypted clips to mobile apps via IPv6. IC Role / Device Role / Timing Role: Standalone wireless MCU managing camera interface (8-bit parallel), audio codec (I2S), and dual-band Wi-Fi handoff during signal degradation. Use Value: LPDS current of 120µA extends battery life >6 months; 5GHz support avoids 2.4GHz congestion in dense urban Wi-Fi environments. |
| Industrial Asset Trackers | Medical Remote Monitors |
Use Scenario: GPS-enabled logistics tag reporting location, temperature, and shock events to fleet management dashboards using HTTPS POST. IC Role / Device Role / Timing Role: Secure IoT node executing sensor fusion algorithms, maintaining TLS sessions, and entering hibernate (4.5µA) between transmissions. Use Value: Hardware AES/SHA engines accelerate certificate validation and payload encryption - reducing CPU load and enabling sub-second response times. | Use Scenario: Wearable ECG monitor transmitting clinical-grade biometric data to hospital EMR systems via WPA3-Enterprise authenticated networks. IC Role / Device Role / Timing Role: Medical-grade wireless MCU enforcing secure boot, runtime memory protection, and certificate signing request (CSR) generation for PKI enrollment. Use Value: FIPS 140-2 Level 1 certification validates cryptographic integrity for FDA-regulated Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wireless MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CC3235S12RGKR | No integrated Flash; relies on external SPI flash for code storage | Requires external memory layout and additional BOM cost; lower total solution footprint | Select when firmware size <256KB and external flash is already used in design |
| ESP32-WROVER-B | Wi-Fi only (2.4GHz), no 5GHz support; lacks FIPS 140-2 certification and hardware crypto acceleration | Suitable for cost-sensitive consumer IoT but not for regulated industrial/medical use cases | Choose for non-regulated, high-volume applications where dual-band and FIPS compliance are unnecessary |
Compared with CC3235S12RGKR, CC3235SF12RGKR eliminates external flash dependency and simplifies BOM; versus ESP32-WROVER-B, it delivers certified security, 5GHz operation, and deterministic low-power behavior essential for mission-critical edge devices.
Availability
CC3235SF12RGKR is available at Aetrix Electronics and suitable for building automation, medical remote monitors, and industrial asset trackers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for CC3235SF12RGKR 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 connectivity solutions for industrial, automotive, and IoT markets.
The CC3235SF12RGKR belongs to TI's SimpleLink™ Wi-Fi® MCU platform, designed specifically for secure, battery-efficient, dual-band wireless edge nodes requiring integrated processing, networking, and cryptographic capabilities.
FAQ
What distinguishes CC3235SF12RGKR from the CC3235S variant?
The CC3235SF12RGKR integrates 1MB of on-chip executable Flash alongside 256KB RAM, enabling standalone firmware execution without external memory. In contrast, the CC3235S variant omits internal Flash and requires external SPI flash for code storage. Both share identical dual-band Wi-Fi, security features, and VQFN-64 packaging. The CC3235SF12RGKR is therefore preferred for designs prioritizing BOM simplification, reduced PCB area, and enhanced reliability in harsh environments where external flash connections may degrade.
Does CC3235SF12RGKR support 5GHz Wi-Fi operation in Access Point mode?
Yes, the CC3235SF12RGKR supports 5GHz Wi-Fi operation exclusively in Station (STA) mode per its documented feature set. Access Point (AP) mode is limited to the 2.4GHz band. This constraint is enforced by the network processor subsystem's ROM firmware and cannot be overridden via software configuration. For dual-band AP functionality, alternative solutions such as discrete 2.4/5GHz AP chips or external Wi-Fi modules must be considered.
How does the FIPS 140-2 Level 1 certification apply to CC3235SF12RGKR?
The FIPS 140-2 Level 1 certification applies to the CC3235SF12RGKR's hardware cryptographic engine - specifically its AES, DES, SHA/MD5, and CRC acceleration blocks - validating their correct implementation and resistance to basic physical and logical attacks. Certification covers key generation, encryption/decryption, and hash operations performed within the secure boundary of the SoC. It does not extend to higher-layer protocols or application firmware, which remain the developer's responsibility for compliance alignment.
What are the critical layout requirements for the WLAN_XTAL_P/N pins on CC3235SF12RGKR?
The WLAN_XTAL_P/N pins on CC3235SF12RGKR require a 40MHz fundamental-mode crystal placed within 5mm of the device, with symmetric 50Ω microstrip traces, ground guard rings, and no nearby digital routing. Load capacitance must match the crystal's specified value (typically 12pF), and series resistors (0Ω recommended) should be included for tuning. Avoid vias under the crystal or near the XTAL pads, and ensure the crystal's case is grounded to the thermal pad to minimize phase noise and maintain Wi-Fi RF performance stability.
Can CC3235SF12RGKR operate across the full industrial temperature range without derating?
Yes, the CC3235SF12RGKR is fully specified and tested for continuous operation from –40°C to +85°C ambient temperature. All electrical characteristics - including TX power, RX sensitivity, current consumption in LPDS/hibernate modes, and Flash read/write endurance - are guaranteed across this range. No thermal derating of performance or voltage supply (VBAT: 2.1V–3.6V) is required. The device's integrated DC/DC regulators and thermal-aware power management ensure stable operation under sustained industrial environmental stress.
CC3235SF12RGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SimpleLink™
- Package/Case:
- 64-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- WiFi
- Protocol:
- 802.11a/b/g/n
- Modulation:
- CCK, DSSS, OFDM
- Frequency:
- 2.412GHz ~ 2.472GHz, 5.18GHz ~ 5.825GHz
- Data Rate (Max):
- 54Mbps
- Power - Output:
- 18.3dBm
- Sensitivity:
- -96dBm
- Memory Size:
- 1MB Flash, 256kB RAM
- Serial Interfaces:
- ADC, I2C, I2S, PWM, JTAG, SPI, UART
- GPIO:
- 21
- Voltage - Supply:
- 2.1V ~ 3.6V
- Current - Receiving:
- 59mA
- Current - Transmitting:
- 272mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 64-VQFN (9x9)
CC3235SF12RGKR FAQ
1.How can I place an order for CC3235SF12RGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for CC3235SF12RGKR 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 CC3235SF12RGKR reliable?
The price and inventory of CC3235SF12RGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CC3235SF12RGKR is usually 5 days.
3.What payment methods are accepted for CC3235SF12RGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CC3235SF12RGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CC3235SF12RGKR?
CC3235SF12RGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CC3235SF12RGKR 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 CC3235SF12RGKR?
For technical support, including CC3235SF12RGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CC3235SF12RGKR requirements.
6.How does Aetrix verify that CC3235SF12RGKR is sourced from the original manufacturer or authorized distributors?
All CC3235SF12RGKR 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 CC3235SF12RGKR meets industry standards.
7.What is the process for return or replacement of CC3235SF12RGKR?
All CC3235SF12RGKR units undergo pre-shipment inspection (PSI). If there is an issue with CC3235SF12RGKR, 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 CC3235SF12RGKR part is unused and in its original packaging.
Return procedure for CC3235SF12RGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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