CC3200_15 Datasheet, PDF (52/71 Pages) Texas Instruments – CC3200 SimpleLink™ Wi-Fi® and Internet-of-Things Solution, a Single-Chip Wireless MCU

CC3200
SWAS032F – JULY 2013 – REVISED FEBRUARY 2015
www.ti.com
NOTE
Table 5-2 lists the modes by power consumption, with highest power modes listed first.
Table 5-2. User Program Modes
Application Processor (MCU)
Mode
MCU active mode
MCU sleep mode
MCU LPDS mode
MCU hibernate mode
Description
MCU executing code at 80-MHz state rate
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.
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 defined in
Table 3-1 as the wake-up source.
The lowest power mode in which all digital logic is power-gated. Only a small section of the logic directly
powered by the input supply is retained. The real-time clock (RTC) clock keeps running and the MCU
supports wakeup from 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 (GPIO0–GPIO6).
The NWP can be active or in LPDS mode and takes care of its own mode transitions. When there is no
network activity, the NWP sleeps most of the time and wakes up only for beacon reception.
Table 5-3. Networking Subsystem Modes
Network Processor Mode
Description
Network active mode processing Transmitting or receiving IP protocol packets
layer 3, 2, and 1
Network active mode (processing Transmitting or receiving MAC management frames; IP processing not required.
layer 2 and 1)
Network active listen mode
Special power optimized active mode for receiving beacon frames (no other frames supported)
Network connected Idle
A composite mode that implements 802.11 infrastructure power save operation. The CC3200R network
processor automatically goes into LPDS mode between beacons and then wakes to active listen mode
to receive a beacon and determine if there is pending traffic at the access point. If not, the network
processor returns to LPDS mode and the cycle repeats.
Network LPDS mode
Low-power state between beacons in which the state is retained by the network processor, allowing for
a rapid wake up.
Network disabled
The operation of the application and network processor ensures that the device remains in the lowest
power mode most of the time to preserve battery life. Table 5-4 summarizes the important CC3200 chip-
level power modes.
Table 5-4. Important Chip-Level Power Modes
Power States for
Applications MCU
and Network
Processor
MCU active mode
MCU LPDS mode
MCU hibernate mode
Network Processor Active Mode
(Transmit, Receive, or Listen)
Network Processor LPDS Mode
Network Processor
Disabled
Chip = active (C)
Chip = active
Chip = active
Chip = active (A)
Chip = LPDS (B)
Chip = LPDS
Not supported because chip is hibernated by Not supported because chip is hibernated by Chip = hibernate (D)
MCU; thus, network processor cannot be in MCU; thus, network processor cannot be in
active mode
LPDS mode
52
Detailed Description
Submit Documentation Feedback
Product Folder Links: CC3200
Copyright © 2013–2015, Texas Instruments Incorporated