Datasheet
Table of Contents
1. Overview 1 ................................................................................................................................
1.1. Wi-Fi Protocol! 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. 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! 10".......................................................................................................................................
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! 17"..................................................................................................................
4.9. ADC (Analog-to-Digital Converter)! 17".........................................................................................