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Functional Overview

1.3.2.2 Flash Memory

The flash block provides an in-circuit, programmable, nonvolatile program memory for the device. The

flash memory is organized as a set of 4-KB pages that can be individually erased. Erasing a block causes

the entire contents of the block to be reset to all 1s. These pages can be individually protected. Read-only

blocks cannot be erased or programmed, protecting the contents of those blocks from being modified. In

addition to holding program code and constants, the nonvolatile memory allows the application to save

data that must be preserved so that it is available after restarting the device. Using this feature lets the

user use saved network-specific data to avoid the need for a full start-up and network find-and-join

process.

1.3.2.3 ROM

The ROM is preprogrammed with a boot sequence, device driver functions, low-level protocol stack

components, and a serial bootloader (SPI or UART).

1.3.3 Radio

The CC26xx device family provides a highly integrated low-power 2.4-GHz radio transceiver with support

for multiple modulations and packet formats. The radio subsystem provides an interface between the MCU

and the radio, which makes it possible to issue commands, read status, and automate and sequence radio

events.

1.3.4 AES Engine With 128-Bit Key Support

The security core of the CC26xx features an Advanced Encryption Standard (AES) module with 128-bit

key support, local key storage, and DMA capability.

• CCM, CTR, CBC-MAC, ECB modes of operation

• 118 Mbps throughput

• Secure key storage memory

• Low latency

SWCU117A–February 2015–Revised March 2015 Architectural Overview

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