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CC2620 Datasheet, PDF (28/52 Pages) Texas Instruments – SimpleLink ZigBee RF4CE Wireless MCU | |||
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CC2620
SWRS178C â FEBRUARY 2015 â REVISED JULY 2016
www.ti.com
6.3 Main CPU
The SimpleLink CC2620 Wireless MCU contains an ARM Cortex-M3 (CM3) 32-bit CPU, which runs the
application and the higher layers of the protocol stack.
The CM3 processor provides a high-performance, low-cost platform that meets the system requirements
of minimal memory implementation, and low-power consumption, while delivering outstanding
computational performance and exceptional system response to interrupts.
CM3 features include the following:
⢠32-bit ARM Cortex-M3 architecture optimized for small-footprint embedded applications
⢠Outstanding processing performance combined with fast interrupt handling
⢠ARM Thumb®-2 mixed 16- and 32-bit instruction set delivers the high performance expected of a 32-bit
ARM core in a compact memory size usually associated with 8- and 16-bit devices, typically in the
range of a few kilobytes of memory for microcontroller-class applications:
â Single-cycle multiply instruction and hardware divide
â Atomic bit manipulation (bit-banding), delivering maximum memory use and streamlined peripheral
control
â Unaligned data access, enabling data to be efficiently packed into memory
⢠Fast code execution permits slower processor clock or increases sleep mode time
⢠Harvard architecture characterized by separate buses for instruction and data
⢠Efficient processor core, system, and memories
⢠Hardware division and fast digital-signal-processing oriented multiply accumulate
⢠Saturating arithmetic for signal processing
⢠Deterministic, high-performance interrupt handling for time-critical applications
⢠Enhanced system debug with extensive breakpoint and trace capabilities
⢠Serial wire trace reduces the number of pins required for debugging and tracing
⢠Migration from the ARM7⢠processor family for better performance and power efficiency
⢠Optimized for single-cycle flash memory use
⢠Ultralow-power consumption with integrated sleep modes
⢠1.25 DMIPS per MHz
6.4 RF Core
The RF Core contains an ARM Cortex-M0 processor that interfaces the analog RF and base-band
circuitries, handles data to and from the system side, and assembles the information bits in a given packet
structure. The RF core offers a high level, command-based API to the main CPU.
The RF core is capable of autonomously handling the time-critical aspects of the radio protocols (802.15.4
RF4CE) thus offloading the main CPU and leaving more resources for the user application.
The RF core has a dedicated 4-KB SRAM block and runs initially from separate ROM memory. The ARM
Cortex-M0 processor is not programmable by customers.
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