32-bit microcontroller CC3235SF

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Overview
The CC3235SF is a SimpleLink™ dual‑band Wi‑Fi® wireless MCU SoC integrating an Arm® Cortex®‑M4 application core and a network processor with 2.4 GHz / 5 GHz radio, baseband and MAC. The CC3235SF variant includes 1 MB user‑executable flash in addition to 256 KB RAM and provides enhanced device and networking security features for IoT and industrial applications.

Key functionality

• Dual‑band Wi‑Fi: 2.4 GHz and 5 GHz (802.11 a/b/g/n)
• Integrated network processor offloads Wi‑Fi and IP stack from the application MCU
• Application MCU: Arm® Cortex®‑M4 (80 MHz)
• Supports FreeRTOS and TI‑RTOS; compatible with SimpleLink™ SDKs and LaunchPad development kits
• Wi‑Fi CERTIFIED™ chip; FIPS 140‑2 Level 1 (module/part dependent)

Security and networking features

• Multilayer security: device attestation & anti‑counterfeit, Secure Boot, secure firmware update, secure storage, software IP protection
• Support for WPA™, WPA2™, WPA3™ Personal and Enterprise, WEP
• Up to 16 concurrent secure sockets (TLS/SSL), CSR and OCSP support
• Hardware crypto accelerators (AES, DES, SHA/MD5, CRC)

Wireless and protocol capabilities

• 802.11 a/b/g/n on 2.4 GHz and 5 GHz; AP/STA/Wi‑Fi Direct (2.4 GHz)
• Internet/application protocols: HTTPS server, mDNS, DNS‑SD, DHCP; IPv4 and IPv6 TCP/IP stack
• 16 BSD sockets with TLS v1.2 and SSL 3.0 support; BLE coexistence

Application MCU subsystem and peripherals

• Arm® Cortex®‑M4 core at 80 MHz; 256 KB user‑dedicated RAM
• 1 MB optional/integrated executable Flash (CC3235SF)
• Peripherals: UART, I2S, I2C, SPI, SD, ADC, 8‑bit parallel interface, timers, PWM
• Up to 27 GPIOs with flexible multiplexing

Power management and low‑power modes

• Integrated DC/DC converters; VBAT wide‑voltage mode 2.1 V to 3.6 V; VIO tied to VBAT
• Advanced low‑power modes: Shutdown ~1 µA; Hibernate ~4.5 µA; LPDS ~120 µA; Idle connected (MCU in LPDS) ~710 µA
• Typical active currents: RX ~59 mA; TX ~223 mA

Performance and radio

• Application throughput examples: UDP up to 16 Mbps; TCP up to 13 Mbps; peak up to 72 Mbps
• Wi‑Fi TX power: ~18.0 dBm (2.4 GHz, 1 DSSS); ~18.1 dBm (5 GHz, 6 OFDM)
• Wi‑Fi RX sensitivity: ~‑96 dBm (2.4 GHz); ~‑92 dBm (5 GHz)

Package, rating and environmental

• RGK package: 64‑pin VQFN, 9 mm × 9 mm, 0.5 mm pitch
• Operating temperature: −40 °C to +85 °C (industrial)
• Product status: ACTIVE

Typical use and ecosystem

• Part of the SimpleLink™ MCU platform with unified SDKs, tools and reference designs
• Supported by SimpleLink CC32xx SDK, TI‑RTOS / FreeRTOS, UniFlash and LaunchPad/development modules

Specifications

• Processor: Arm® Cortex®‑M4 (80 MHz)
• Device type: Wireless MCU (dual‑band SoC)
• Memory: 1 MB executable Flash (CC3235SF), 256 KB RAM
• Protocols: Wi‑Fi 2.4 GHz & 5 GHz (802.11 a/b/g/n), IPv4 & IPv6
• Throughput: UDP up to 16 Mbps; TCP ~13 Mbps; Peak up to 72 Mbps
• Security: FIPS 140‑2 Level 1 (part dependent), Secure Boot, hardware crypto engines
• Operating temperature: −40 °C to +85 °C
• Package: VQFN (RGK) 64‑pin, 9 × 9 mm, 0.5 mm pitch