CC2640R2F-Q1 Datasheet, PDF (28/40 Pages) Texas Instruments – SimpleLink Bluetooth low energy Wireless MCU for Automotive

CC2640R2F-Q1
SWRS201 – JANUARY 2017
www.ti.com
The device includes a direct memory access (µDMA) controller. The µDMA controller provides a way to
offload data transfer tasks from the CM3 CPU, 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 as 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
– Peripheral-to-peripheral
• Data sizes of 8, 16, and 32 bits
The AON domain contains circuitry that is always enabled, except 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 and one capture registers. 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 give a battery status
indication as well as a coarse temperature measure.
6.11 Voltage Supply Domains
The CC2640R2F-Q1 device can interface to three different voltage domains. On-chip level converters
ensure correct operation when the signal voltage on each input or output pin is set with respect to the
corresponding supply pin (VDDS, VDDS2, or VDDS3). Table 6-3 lists the pin-to-VDDS mapping.
Table 6-3. Pin Function to VDDS Mapping Table
VOLTAGE DOMAIN
VDDS ⁽¹⁾
VDDS2
VDDS3
VQFN 7 × 7 (RGZ)
DIO 23 to DIO 30
Reset_N
DIO 0 to DIO 11
DIO 12 to DIO 22
JTAG
(1) VDDS_DCDC must be connected to VDDS on the PCB
6.12 System Architecture
Depending on the product configuration, CC2640R2F-Q1 can function either as a wireless network
processor (WNP—a device running the wireless protocol stack with the application running on a separate
MCU), or as a system-on-chip (SoC), with the application and protocol stack running on the ARM Cortex-
M3 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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