Texas Instruments CC2511F32RSPR

Overview

CC2511F32RSPR from Texas Instruments is a low-power 2.4 GHz system-on-chip (SoC) integrating an enhanced 8051 MCU, 32 kB flash, 4 kB RAM, a CC2500-based RF transceiver, and a full-speed USB 2.0 controller - enabling USB dongle designs with −103 dBm sensitivity, 500 kBaud programmable data rate, and 0.3 µA PM3 sleep current.

For engineers reviewing the CC2511F32RSPR datasheet, CC2511F32RSPR pinout, CC2511F32RSPR application, or CC2511F32RSPR equivalent, key selection considerations include USB endpoint configuration (5 bidirectional + control), I2S audio interface support, hardware AES-128 coprocessor, 19 GPIOs, and compliance with FCC Part 15, EN 300 328, and ARIB STD-T-66.

Technical Context

The CC2511F32RSPR implements a dual-oscillator architecture: a 48 MHz crystal oscillator for USB and radio operation, and a low-power RC or 32.768 kHz crystal for sleep timing. Its RF baseband includes hardware-accelerated packet handling with sync word detection, address filtering, automatic CRC, and LQI/RSSI reporting.

MCU subsystem features two data pointers, in-circuit debug via two-wire serial interface, and DMA-driven peripheral transfers - supporting concurrent USB bulk transfers, RF packet RX/TX, and ADC sampling without CPU intervention. Power management supports four modes, with PM3 requiring external interrupt wake-up only.

Key Specifications

Pinout & Package

CC2511F32RSPR uses a 6 × 6 mm QFN-36 package (RoHS-compliant, green, no antimony/bromine) with exposed thermal pad. Pin functions are validated per SWRS055G Rev G, Section 7.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2.4 GHz SoC with USB applications.

Compared with CC2511F16RSPR, CC2511F32RSPR provides 16 kB additional flash for complex protocol stacks or OTA update partitions; compared with CC2531F256RHAR, it trades Zigbee certification and larger memory for integrated USB 2.0 - eliminating bridge ICs and simplifying dongle BOMs.

Availability

CC2511F32RSPR is available at Aetrix Electronics and suitable for wireless USB dongles, voice-quality audio adapters, RF remote controls, and low-power telemetry sensors requiring stable component supply across industrial and consumer production programs.

Supply support for CC2511F32RSPR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The CC2511Fx product line targets cost-sensitive, battery-operated 2.4 GHz wireless applications - specifically designed to integrate MCU, RF, USB, and security into a single chip for USB dongles and audio peripherals.

FAQ

What is the maximum data rate supported by the CC2511F32RSPR RF transceiver?

The CC2511F32RSPR RF transceiver supports a programmable data rate up to 500 kBaud using (shaped) MSK modulation. At 2.4 kBaud, it achieves −103 dBm receiver sensitivity. GFSK and 2-FSK are also supported, with data rates ranging from 1.2 to 250 kBaud depending on modulation and filtering configuration. The CC2511F32RSPR does not support Bluetooth or proprietary high-throughput protocols beyond its specified RF baseband capabilities.

Does the CC2511F32RSPR support USB device enumeration without external components?

Yes, the CC2511F32RSPR integrates a full-speed USB 2.0 controller with on-die transceiver, enabling direct USB device enumeration without external PHY or level-shifting components. It supports control, bulk, interrupt, and isochronous transfer types, with 1 kB of dedicated endpoint FIFO memory. The CC2511F32RSPR requires only a 48 MHz crystal, USB_DP/DM termination resistors, and proper ESD protection - no external USB bridge IC is needed.

How many GPIO pins does the CC2511F32RSPR provide, and which ports are available?

The CC2511F32RSPR provides 19 configurable general-purpose digital I/O pins across three ports: Port 0 (P0_0–P0_7, 8 pins), Port 1 (P1_0–P1_7, 8 pins), and Port 2 (P2_0–P2_2, 3 pins). Unlike the CC2510Fx variant, the CC2511F32RSPR excludes P2_3–P2_4, resulting in 19 total GPIOs. Each pin supports multiple peripheral functions including USART, I2S, ADC, and debug interface, configurable via register settings.

What power supply requirements must be met for reliable operation of the CC2511F32RSPR?

The CC2511F32RSPR requires a regulated 3.0–3.6 V supply on all VDD pins, with separate decoupling for digital, analog, and RF domains. Per SWRS055G, each VDD pin needs a 100 nF ceramic capacitor plus a 1 µF bulk capacitor. The RF section demands tight layout isolation and a solid ground plane beneath the QFN-36 thermal pad. Supply voltage below 3.0 V disables USB functionality and may cause RF instability; operation above 3.6 V risks permanent damage per absolute maximum ratings.

Is the CC2511F32RSPR compatible with the CC2510Fx family in terms of firmware and toolchain?

Firmware for the CC2511F32RSPR is source-compatible with CC2510Fx variants at the 8051 instruction level and peripheral register map, but not binary-compatible due to USB controller presence and differing clock tree (48 MHz vs 24–27 MHz). IAR Embedded Workbench and TI's SmartRF Studio support both families, though CC2511F32RSPR projects require USB stack integration and updated startup code for 48 MHz crystal initialization - the CC2511F32RSPR cannot run unmodified CC2510Fx firmware.