CC3220MODASM2MONR datasheet(62/100 Pages) TI1

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CC3220MOD, CC3220MODA

SWRS206B – MARCH 2017 – REVISED AUGUST 2017

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Detailed Description

(1)

Modes are listed in order of power consumption, with highest power modes listed first.

6.5

Power-Management Subsystem

The CC3220MODx and CC3220MODAx power-management subsystems contain DC/DC converters to

accommodate the differing voltage or current requirements of the system.

The CC3220MODx and CC3220MODAx are 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.

6.5.1

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.

6.6

Low-Power Operating Mode

From a power-management perspective, the CC3220MODx and CC3220MODAx module comprise the

following two independent subsystems:

•

Cortex-M4 application processor subsystem

•

Networking subsystem

Each subsystem operates in one of several power states.

The Cortex-M4 application processor runs the user application loaded from an external serial Flash, or

internal Flash (in CC3220MODSF). 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.

Table 6-2. User Program Modes

APPLICATION PROCESSOR

(MCU) MODE(1)

DESCRIPTION

MCU active mode

MCU executing code at 80-MHz state rate

MCU sleep mode

The MCU clocks are gated off in sleep mode and the entire state of the device is retained. Sleep mode

offers instant wakeup. The MCU can be configured to wake up by an internal fast timer or by activity

from any GPIO line or peripheral.

MCU LPDS mode

State information is lost and only certain MCU-specific register configurations are retained. The MCU

can wake up from external events or by using an internal timer. (The wake-up time is less than 3 ms.)

Certain parts of memory can be retained while the MCU is in LPDS mode. The amount of memory

retained is configurable. Users can choose to preserve code and the MCU-specific setting. The MCU

can be configured to wake up using the RTC timer or by an external event on specific GPIOs as the

wake-up source.

MCU hibernate mode

The lowest power mode in which all digital logic is power-gated. Only a small section of the logic directly

an external event or from an RTC timer expiry. Wake-up time is longer than LPDS mode at about 15 ms

plus the time to load the application from serial Flash, which varies according to code size. In this mode,

the MCU can be configured to wake up using the RTC timer or external event on a GPIO .

MCU shutdown mode

The lowest power mode system-wise. All device logics are off, including the RTC. The wake-up time in

this mode is longer than hibernate at about 1.1 s. To enter or exit the shutdown mode, the state of the

nRESET line is changed (low to shut down, high to turn on).

CC3220MODASM2MONR Datasheet(PDF) 62 Page - Texas Instruments

CC3220MODASM2MONR Datasheet(HTML) 62 Page - Texas Instruments

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