CC3220MOD_017 Datasheet, PDF (56/100 Pages) Texas Instruments – SimpleLink Wi-Fi CERTIFIED Wireless MCU Modules

CC3220MOD, CC3220MODA
SWRS206B – MARCH 2017 – REVISED AUGUST 2017
www.ti.com
6 Detailed Description
6.1 Overview
The CC3220MODx and CC3220MODAx are Wi-Fi Internet-on-a chip modules that consists of a Cortex-
M4 processor with a rich set of peripherals for diverse application requirements, a Wi-Fi network
processor, and power-management subsystems.
6.2 ARM^® Cortex^®-M4 Processor Core Subsystem
The high-performance Cortex-M4 processor provides a low-cost platform that meets the needs of minimal
memory implementation, reduced pin count, and low power consumption, while delivering outstanding
computational performance and exceptional system response to interrupts.
• The Cortex-M4 core has low-latency interrupt processing with the following features:
– A 32-bit ARM^® Thumb^® instruction set optimized for embedded applications
– Handler and thread modes
– Low-latency interrupt handling by automatic processor state saving and restoration during entry and
exit
– Support for ARMv6 unaligned accesses
• Nested vectored interrupt controller (NVIC) closely integrated with the processor core to achieve low-
latency interrupt processing. The NVIC includes the following features:
– Bits of priority configurable from 3 to 8
– Dynamic reprioritization of interrupts
– Priority grouping that enables selection of preempting interrupt levels and nonpreempting interrupt
levels
– Support for tail-chaining and late arrival of interrupts, which enables back-to-back interrupt
processing without the overhead of state saving and restoration between interrupts
– Processor state automatically saved on interrupt entry and restored on interrupt exit with no
instruction overhead
– Wake-up interrupt controller (WIC) providing ultra-low-power sleep mode support
• Bus interfaces:
– Advanced high-performance bus (AHB-Lite) interfaces: system bus interfaces
– Bit-band support for memory and select peripheral that includes atomic bit-band write and read
operations
• Low-cost debug solution featuring:
– Debug access to all memory and registers in the system, including access to memory-mapped
devices, access to internal core registers when the core is halted, and access to debug control
registers even while SYSRESETn is asserted
– Serial wire debug port (SW-DP) or serial wire JTAG debug port (SWJ-DP) debug access
– Flash patch and breakpoint (FPB) unit to implement breakpoints and code patches
56
Detailed Description
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