SPRF24B23A
2.4GHz USB/RF SoC ??The All-in-One Solution for Wireless USB Dongles & Smart TV Peripherals
General Description
The SPRF24B23A is a highly integrated System-on-Chip (SoC) specifically engineered for wireless USB dongles. By merging a SPRF24B01A-compatible 2.4GHz RF transceiver with a Full/Low-speed USB 2.0 controller and a robust 8-bit MCU, it provides a high-performance, low-BOM cost solution for the next generation of PC and Smart TV peripherals.
The SPRF24B23A is the ideal engine for bridging wireless peripherals to USB hosts. Whether for a wireless mouse, game controller, or Smart TV remote, this SoC delivers the speed and reliability required for modern user interfaces.
This SoC integrates: High-Speed RF ??A 2.4GHz GFSK transceiver supporting up to 2Mbps air data rates. USB Controller ??A fully compliant USB 2.0 Full/Low-speed device controller. Processing Power ??An 8-bit SunplusIT CPU core optimized for HID applications. On-Chip Storage ??16K bytes of OTP memory and 128 bytes of EEPROM for persistent device configuration. Housed in a compact 6x6mm QFN package, the SPRF24B23A is designed to minimize external components, reducing both the PCB footprint and the overall manufacturing cost.
2.4GHz RF
ISM band 2.4??.4835GHz; up to -97 dBm at 250Kbps; LNA, PA, ±60ppm crystal tolerance.
USB 2.0 & Endpoints
Full/Low Speed; 5 programmable IN/OUT endpoints; crystal-less low speed with 6MHz internal osc.
OTP, EEPROM & I/O
16KB OTP, 128B EEPROM, 512B RAM; 3.3V LDO; LVD, LVR, WDOG; up to 13 GPIOs.
Key Features
Integrated 2.4GHz RF Performance
- check_circle Worldwide ISM Band: 2.400GHz to 2.4835GHz.
- check_circle Superior Sensitivity: Up to -97 dBm (at 250Kbps) and -87 dBm (at 2Mbps).
- check_circle Robust Link: Integrated LNA, PA, and data recovery logic.
- check_circle Frequency Stability: ±60ppm 16M crystal tolerance.
Full-Featured USB Connectivity
- check_circle USB 2.0: Full Speed (12Mbps) and Low Speed (1.5Mbps).
- check_circle 5 programmable endpoints (including EP0), configurable as IN or OUT.
- check_circle Crystal-less Low Speed: Internal 6MHz oscillator ±1.5% for USB low-speed without external crystal.
Processing & Memory
- check_circle 16KB OTP ROM for one-time programmable firmware.
- check_circle 128B EEPROM for pairing information and user settings.
- check_circle 512B RAM for data buffering.
- check_circle Timers: 14-bit free-run timer and two 8-bit timers (cascadable to 16-bit).
Power & System Protection
- check_circle Integrated 3.3V Regulator: LDO from 5V USB bus for USB and internal operations.
- check_circle Safety Suite: LVD, LVR, Watchdog Timer, Software Reset.
- check_circle Versatile I/O: Up to 13 GPIOs with programmable pull-up/pull-down.
Technical Specifications
| Parameter | Specifications |
|---|---|
| RF Frequency Range | 2.400 GHz - 2.4835 GHz |
| Operating Voltage | 4.0V - 5.5V (USB Powered) |
| Air Data Rate | 250Kbps / 1Mbps / 2Mbps |
| USB Support | Full Speed / Low Speed (5 Endpoints) |
| Program Memory | 16K Bytes OTP ROM |
| Data Memory | 512B RAM / 128B EEPROM |
| Package Type | 40-Pin 6x6mm QFN |
| Oscillator Accuracy | ±1.5% (Internal 6MHz) |
Main Applications
- usb Wireless USB Dongles for Mice and Keyboards
- sports_esports Game Peripherals: Wireless gamepads and joystick receivers
- tv Smart TV Peripherals: Air-mice and remote control receivers
- touch_app Wireless Presenters and PC Remote Controllers