Data Sheet
Table of Contents
1. Overview 1 ................................................................................................................................
1.1. Wi-Fi Protocols! 1"...........................................................................................................................
1.2. Main Technical Speciļ¬cations! 3"....................................................................................................
1.3. Applications! 4"...............................................................................................................................
2. Pin Deļ¬nitions 5 ........................................................................................................................
3. Functional Description 7 ..........................................................................................................
3.1. CPU, Memory, and Flash! 7"...........................................................................................................
3.1.1. CPU! 7"...............................................................................................................................
3.1.2. Memory! 7"..........................................................................................................................
3.1.3. External Flash! 8"................................................................................................................
3.2. AHB and AHB Blocks! 8".................................................................................................................
3.3. Clock! 8"..........................................................................................................................................
3.3.1. High Frequency Clock! 8"...................................................................................................
3.3.2. External Clock Requirements! 9"........................................................................................
3.4. Radio! 9"..........................................................................................................................................
3.4.1. Channel Frequencies! 9".....................................................................................................
3.4.2. 2.4 GHz Receiver! 10".........................................................................................................
3.4.3. 2.4 GHz Transmitter! 10".....................................................................................................
3.4.4. Clock Generator! 10"..........................................................................................................
3.5. Wi-Fi! 11".........................................................................................................................................
3.6. Power Management! 11".................................................................................................................
4. Peripheral Interface 13 .............................................................................................................
4.1. General Purpose Input/Output Interface (GPIO)! 13"......................................................................
4.2. Secure Digital Input/Output Interface (SDIO)! 13"...........................................................................
4.3. Serial Peripheral Interface (SPI/HSPI)! 14"......................................................................................
4.3.1. General SPI (Master/Slave)! 14"..........................................................................................
4.3.2. HSPI (Slave)! 14".................................................................................................................
4.4. I2C Interface! 14".............................................................................................................................
4.5. I2S Interface! 15".............................................................................................................................
4.6. Universal Asynchronous Receiver Transmitter (UART)! 15"............................................................
4.7. Pulse-Width Modulation (PWM)! 16"...............................................................................................
4.8. IR Remote Control! 16"....................................................................................................................
4.9. ADC (Analog-to-Digital Converter)! 17"...........................................................................................
4.10. LED Light and Button! 18"...............................................................................................................