Texas Instruments CC3100R11MRGC

Overview

CC3100R11MRGC from Texas Instruments is a Wi-Fi CERTIFIED™ network processor IC that offloads Wi-Fi and Internet protocol stacks from host MCUs via SPI or UART interface. It integrates 802.11b/g/n radio, MAC, baseband, TLS/SSL crypto engine (256-bit AES), TCP/IP stack, and supports Station/AP/Wi-Fi Direct modes with WPA2 security. Used in IoT gateways and smart appliances requiring low-power cloud connectivity.

For engineers reviewing the CC3100R11MRGC datasheet, CC3100R11MRGC pinout, CC3100R11MRGC application, or CC3100R11MRGC equivalent, key selection considerations include its 64-pin QFN package, hibernate current of 4 µA, dual crystal support (40 MHz WLAN + 32.768 kHz RTC), and host driver memory footprint under 7 KB code / 700 B RAM for TCP client operation.

Technical Context

The CC3100R11MRGC implements a dedicated ARM MCU subsystem for complete Wi-Fi and Internet protocol offload, decoupling host MCU resources. Its integrated DC-DC power management supports both wide-voltage (2.1–3.6 V) and preregulated 1.85-V operation, enabling ultra-low-power hibernate (4 µA) and LPDS (115 µA) modes.

It features dual-clock architecture: 40.0-MHz crystal for WLAN timing and 32.768-kHz crystal or external RTC clock for real-time control. The hardware includes a dedicated crypto engine for TLS/SSL acceleration and supports up to 8 simultaneous TCP/UDP sockets plus 2 TLS/SSL sockets concurrently.

Key Specifications

Pinout & Package

CC3100R11MRGC uses a 64-pin QFN (RGC) package with 0.5-mm pitch and 9.0 mm × 9.0 mm body size. Thermal pad (pin 65) serves as electrical and thermal ground.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Wi-Fi network processor applications.

Compared with CC3100R11MRGC, CC3200R1M2RGC integrates application processing but sacrifices ultra-low hibernate current (4 µA → 10 µA), while ESP32-WROOM-32 offers dual-mode wireless at lower price but requires external security implementation and exhibits higher RX sensitivity variance across channels.

Availability

CC3100R11MRGC is available at Aetrix Electronics and suitable for home automation hubs, industrial sensor gateways, and smart plug controllers requiring stable component supply, long-term lifecycle assurance, and Wi-Fi CERTIFIED interoperability.

Supply support for CC3100R11MRGC 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 delivering analog and embedded processing solutions with emphasis on reliability, longevity, and industrial-grade qualification.

The CC3100R11MRGC belongs to the SimpleLink Wi-Fi family, designed specifically to simplify Internet-of-Things connectivity by offloading full Wi-Fi and Internet protocol stacks from resource-constrained microcontrollers.

FAQ

What is the minimum supply voltage required for CC3100R11MRGC operation?

The CC3100R11MRGC supports two operating modes: wide-voltage mode (2.1 V to 3.6 V) and preregulated 1.85-V mode. In wide-voltage mode, the absolute minimum VBAT is 2.1 V per the brown-out threshold (V_brownout = 2.1 V). Below this, the device enters brown-out state and disables all blocks except the hibernate module. For reliable continuous operation, maintain VBAT ≥ 2.1 V with ≤ ±300 mV ripple.

Does CC3100R11MRGC require external flash memory?

The CC3100R11MRGC contains embedded ROM with full Wi-Fi driver, TCP/IP stack, TLS/SSL, HTTP server, and supplicant-enabling standalone operation without external flash for basic connectivity. However, user applications, certificates, and configuration files are stored in external serial flash (accessed via dedicated FLASH_SPI interface). The device includes boot ROM that loads firmware from flash at startup, so external flash is required for field-upgradable deployments.

How does the hibernate mode of CC3100R11MRGC function with RTC support?

In hibernate mode, the CC3100R11MRGC powers down all subsystems except the RTC module and associated 32.768-kHz oscillator circuitry, drawing just 4 µA. The RTC continues counting time and can generate wake-up interrupts at programmable intervals. This mode retains RTC state and allows fast resumption (<1.35 s initialization) upon nHIB deassertion, making it ideal for periodic sensor polling in battery-powered IoT endpoints.

What host interfaces does CC3100R11MRGC support, and what are their memory requirements?

The CC3100R11MRGC supports SPI and UART host interfaces. The SPI interface is preferred for high-throughput applications (e.g., firmware OTA), while UART is used for debug and low-pin-count designs. For a TCP client application, the host driver requires less than 7 KB of code memory and 700 B of RAM-significantly reducing host MCU resource demands compared to software-based Wi-Fi stacks.

Is CC3100R11MRGC compatible with WPA2-Enterprise security protocols?

Yes, CC3100R11MRGC fully supports WPA2-Enterprise security including EAP-TLS, PEAP-MSCHAPv2, and TTLS. Its integrated crypto engine accelerates 256-bit AES, SHA-256, and RSA operations required for certificate-based authentication. The device stores credentials securely in internal memory and performs all handshake processing autonomously-no host MCU involvement is needed beyond initiating the connection request.