CC1350 Datasheet, PDF (37/52 Pages) Texas Instruments – SimpleLink Ultra-Low-Power Dual-Band Wireless MCU

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CC1350
SWRS183 – JUNE 2016
The device includes a direct memory access (µDMA) controller. The µDMA controller provides a way to
offload data-transfer tasks from the CM3 CPU, thus allowing for more efficient use of the processor and
the available bus bandwidth. The µDMA controller can perform transfer between memory and peripherals.
The µDMA controller has dedicated channels for each supported on-chip module and can be programmed
to automatically perform transfers between peripherals and memory when the peripheral is ready to
transfer more data.
Some features of the µDMA controller include the following (this is not an exhaustive list):
• Highly flexible and configurable channel operation of up to 32 channels
• Transfer modes: memory-to-memory, memory-to-peripheral, peripheral-to-memory, and
peripheral-to-peripheral
• Data sizes of 8, 16, and 32 bits
The AON domain contains circuitry that is always enabled, except when in shutdown mode (where the
digital supply is off). This circuitry includes the following:
• The RTC can be used to wake the device from any state where it is active. The RTC contains three
compare registers and one capture register. With software support, the RTC can be used for clock and
calendar operation. The RTC is clocked from the 32-kHz RC oscillator or crystal. The RTC can also be
compensated to tick at the correct frequency even when the internal 32-kHz RC oscillator is used
instead of a crystal.
• The battery monitor and temperature sensor are accessible by software and provide a battery status
indication as well as a coarse temperature measure.
6.10 System Architecture
Depending on the product configuration, CC1350 can function as a wireless network processor (WNP –
an IC running the wireless protocol stack, with the application running on a separate host MCU), or as a
system-on-chip (SoC) with the application and protocol stack running on the ARM CM3 core inside the
device.
In the first case, the external host MCU communicates with the device using SPI or UART. In the second
case, the application must be written according to the application framework supplied with the wireless
protocol stack.
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