CC3220MOD Datasheet, PDF (58/82 Pages) Texas Instruments – SimpleLink Wi-Fi CERTIFIED Wireless Module Solution

CC3220MOD
SWRS206 – MARCH 2017
www.ti.com
6.7.1.1 SRAM
The CC3220MODx family provides 256KB of on-chip SRAM. Internal RAM is capable of selective
retention during LPDS mode. This internal SRAM is at offset 0x2000 0000 of the device memory map.
Use the μDMA controller to transfer data to and from the SRAM.
When the device enters low-power mode, the application developer can choose to retain a section of
memory based on need. Retaining the memory during low-power mode provides a faster wakeup. The
application developer can choose the amount of memory to retain in multiples of 64KB. For more
information, see the API guide.
6.7.1.2 ROM
The internal zero-wait-state ROM of the CC3220MODx device is at address 0x0000 0000 of the device
memory and is programmed with the following components:
• Bootloader
• Peripheral driver library (DriverLib) release for product-specific peripherals and interfaces
The bootloader is used as an initial program loader (when the serial Flash memory is empty). The
CC3220MODx DriverLib software library controls on-chip peripherals with a bootloader capability. The
library performs peripheral initialization and control functions, with a choice of polled or interrupt-driven
peripheral support. The DriverLib APIs in ROM can be called by applications to reduce Flash memory
requirements and free the Flash memory to be used for other purposes.
6.7.1.3 Flash Memory
The CC3220SF device within the CC3220MODSF module comes with an on-chip Flash memory of 1MB
that allows application code to execute in place while freeing SRAM exclusively for read-write data. The
Flash memory is used for code and constant data sections and is directly attached to the ICODE/DCODE
bus of the Cortex-M4 core. A 128-bit-wide instruction prefetch buffer allows maintenance of maximum
performance for linear code or loops that fit inside the buffer.
The Flash memory is organized as 2-KB sectors that can be independently erased. Reads and writes can
be performed at word (32-bit) level.
58
Detailed Description
Submit Documentation Feedback
Product Folder Links: CC3220MOD
Copyright © 2017, Texas Instruments Incorporated