CC3220 Datasheet, PDF (58/84 Pages) Texas Instruments – SimpleLink Wi-Fi Wireless and Internet-of-Things Solution, a Single-Chip Wireless MCU

CC3220
SWAS035A – SEPTEMBER 2016 – REVISED FEBRUARY 2017
www.ti.com
Figure 5-3 shows the high-level structure of the CC3220S and CC3220SF devices. The application image,
user data, and network information files (passwords, certificates) are encrypted using a device-specific
key.
Peripherals
SPI and I2C
GPIO
UART
PWM
ADC
-
CC3220S and CC3220SF
Network Processor + MCU
MCU
ARM^® Cortex^®-M4
256-KB RAM /
1-MB Flash (CC3220SF)
OEM
Application
Network Processor
Internet
HTTPS
TLS/SSL
TCP/IP
Wi-Fi^®
MAC
Baseband
Radio
Internet
Serial Flash
OEM
Application
Data Files
Network information
Copyright © 2017, Texas Instruments Incorporated
Figure 5-3. CC3220S and CC3220SF High-Level Structure
5.6 Power-Management Subsystem
The CC3220x power-management subsystem contains DC-DC converters to accommodate the different
voltage or current requirements of the system.
• Digital DC-DC (Pin 44)
– Input: VBAT wide voltage (2.1 to 3.6 V) or preregulated 1.85 V
• ANA1 DC-DC (Pin 37)
– Input: VBAT wide voltage (2.1 to 3.6 V)
– In preregulated 1.85-V mode, the ANA1 DC-DC converter is bypassed.
• PA DC-DC (Pin 39)
– Input: VBAT wide voltage (2.1 to 3.6 V)
– In preregulated 1.85-V mode, the PA DC-DC converter is bypassed.
• ANA2 DC-DC (Pin 47)
– Input: VBAT wide voltage (2.1 to 3.6 V) or preregulated 1.85 V
The CC3220x device is a single-chip 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 device to operate from a wide variety of input sources. For maximum
flexibility, the device can operate in the modes described in Section 5.6.1 and Section 5.6.2.
5.6.1 VBAT Wide-Voltage Connection
In the wide-voltage battery connection, the device is powered directly by the battery or preregulated 3.3-V
supply. All other voltages required to operate the device are generated internally by the DC-DC
converters. This scheme supports wide-voltage operation from 2.1 to 3.6 V and is thus the most common
mode for the device.
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Detailed Description
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