CC3235MODASF datasheet(70/100 Pages) TI1

70 / 100 page

CC3235MODAS, CC3235MODASF

SWRS233 – OCTOBER 2019

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Product Folder Links: CC3235MODAS CC3235MODASF

Detailed Description

6.6

FIPS 140-2 Level 1 Certification

The Federal Information Processing Standard (FIPS) Publication 140-2 is a U.S. government computer

security standard. It is commonly referred to as FIPS 140-2, and is used to accredit the design and

implementation of cryptographic functions, for example within a chip. A cryptographic function within a chip

security system is necessary to maintain the confidentiality and integrity of the information that is being

processed.

The security functions of the CC3235x chip that is inside the CC3235MODAx module, are FIPS certified to

FIPS 140-2 level 1. This certification covers topics such as: cryptographic specifications, ports and

interfaces, a finite state model for the cryptographic functions, the operational environment of the function,

and how cryptographic keys are managed. The certification provides the assurance that the

implementation meets FIPS 140-2 level 1 standards.

6.7

Power-Management Subsystem

The CC3235MODAx power-management subsystems contain DC/DC converters to accommodate the

differing voltage or current requirements of the system.

The CC3235MODAx MCU is a fully integrated module-based WLAN radio solution used on an embedded

system with a wide-voltage supply range. The internal power management, including DC/DC converters

and LDOs, generates all of the voltages required for the module to operate from a wide variety of input

sources. For maximum flexibility, the module can operate in the modes described in the following sections.

6.7.1

VBAT Wide-Voltage Connection

In the wide-voltage battery connection, the module can be directly connected to two AA alkaline batteries.

All other voltages required to operate the module are generated internally by the DC/DC converters. This

scheme is the most common mode for the module because it supports wide-voltage operation from 2.3 to

3.6 V.

6.8

Low-Power Operating Mode

From a power-management perspective, the CC3235MODAx MCU comprises the following two

independent subsystems:

•

Arm® Cortex®-M4 application processor subsystem

•

Networking subsystem

Each subsystem operates in one of several power states.

The Arm® Cortex®-M4 application processor runs the user application loaded from an internal Serial Flash,

or on-module XIP Flash (in CC3235MODSF). The networking subsystem runs preprogrammed TCP/IP

and Wi-Fi data link layer functions.

The user program controls the power state of the application processor subsystem and can be in one of

the five modes described in Table 6-2.

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