Data Sheet

Contents
1 Overview 1
1.1 Featured Solutions 1
1.1.1 Ultra Low Power Solution 1
1.1.2 Complete Integration Solution 1
1.2 Basic Protocols 1
1.2.1 Wi-Fi 1
1.2.2 Bluetooth 2
1.3 MCU and Advanced Features 3
1.3.1 CPU and Memory 3
1.3.2 Clocks and Timers 3
1.3.3 Advanced Peripheral Interfaces 3
1.3.4 Security 4
1.3.5 Development Support 4
1.4 Application 4
1.5 Block Diagram 5
2 Pin Definitions 6
2.1 Pin Layout 6
2.2 Pin Description 6
2.3 Power Scheme 8
2.4 Strapping Pins 9
3 Functional Description 10
3.1 CPU and Memory 10
3.1.1 CPU 10
3.1.2 Internal Memory 10
3.1.3 External Flash and SRAM 10
3.1.4 Memory Map 11
3.2 Timers and Watchdogs 13
3.2.1 64-bit Timers 13
3.2.2 Watchdog Timers 13
3.3 System Clocks 13
3.3.1 CPU Clock 13
3.3.2 RTC Clock 14
3.3.3 Audio PLL Clock 14
3.4 Radio 14
3.4.1 2.4 GHz Receiver 14
3.4.2 2.4 GHz Transmitter 15
3.4.3 Clock Generator 15
3.5 Wi-Fi 15
3.5.1 Wi-Fi Radio and Baseband 15
3.5.2 Wi-Fi MAC 16
3.5.3 Wi-Fi Firmware 16
3.5.4 Packet Traffic Arbitration (PTA) 16