CC2640 chip Introduction

CC2640 chip architecture

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A, CC2640 Introduction

1 Introduction

• CC2640 radio device is a microcontroller (MCU), Bluetooth® mainly applied to low-power applications. This device is an economic and efficient ultra-low power 2.4GHz RF device SimpleLink ™ CC26xx series.
• SimpleLink is a trademark of Texas Instruments.

2. Voltage range

• Normal operating voltage: 1.8V to 3.8V
• External regulator mode: 1.7V to 1.95V

3. Current

• Standby current: 1.1μA (RTC operation, RAM / CPU holder)
• Shutdown Current: 100nA (wake when an external event occurs)

4. Receiver Sensitivity

• -97dBm corresponds BLE

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Second, resources

1. Kernel

1) CM3

• Cortex-M3 system kernel, to implement link layer + application layer tasks.
  - 48-MHz the RC Oscillator and 24-MHz the XTAL Oscillator with AN Internal Doubler
  - 32-kHz the XTAL Oscillator, 32-kHz the RC Oscillator or Low-Power 24-MHz the XTAL Derivate Clock for Timing Maintenance the while in Low-Power Modes
  - the ARM the Cortex SysTick timer

2) CM0

• RF Cortex-M0 core, realize the PHY layer is responsible for the task RF radio frequency, RF-DoorBell communicate with CM3 through, developers do not need to modify the kernel firmware CM0.

3) a coprocessor kernel

• In the form of ultra-low power interact with an external sensor.

2. Memory

1) Flash

• 128KB, the driver is loaded, the Bluetooth low power consumption controller, and a boot loader

2) the SRAM

• The system 28KB SRAM, which is the ultra-low leakage 20KB static random access memory (SRAM), 8KB SRAM, suitable for use in cache or system RAM.

3. clock

1) frequency

• 48MHz

4. peripherals

1) GPIO

2) I2C

3) the SPI

4) UART

5) TIMER

• 4

6) ADC

• 12 analog to digital converter (ADC), 200MSPS, 8-Channel Analog Multiplexer

7) RTC Real Time Clock

8) AES encryption

9) Watchdog

The chip architecture

• See first line