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DA16200

Ultra Low Power Wi-Fi SoC

Datasheet

Revision 3.6

04-Jan-2023

CFR0011-120-00

33 of 153

6.3

Low Power Operation Mode

DA16200 provides three Sleep modes as low power operation modes.

6.3.1

Sleep Mode 1

Sleep mode 1 is an operational mode in which the RTC_PWR_KEY is not turned to high yet. The

RTC_PWR_KEY is in the LOW state and the DA16200 is only supplied with VBAT power. With all

the internal blocks off in Sleep mode 1, only the leakage current from a minimal number of internal

blocks connected to VBAT remains.

6.3.2

Sleep Mode 2

Sleep mode 2 is an operational mode in which the RTC_PWR_KEY is set to high and the RTC block

is running. Sleep mode 2 is activated by setting RTC registers to control the power management unit

via a command from the CPU.

To turn Sleep mode 2 back to Sleep mode 1, set RTC_PWR_KEY to low.

Changing the state of the device from Sleep mode 2 to an ACTIVE state happens in one of two ways:

● The counter value is reached that is set by the CPU before entering Sleep mode 2

● An external wake-up event occurs via the RTC_WAKE_UP pin

6.3.3

Sleep Mode 3

Sleep mode 3 is a low power but fully connected Wi-Fi mode of operation. Sleep mode 3 checks for

incoming Wi-Fi network data traffic at regular intervals set by the user. For example, every one

second, three seconds, five seconds, and so on. The exact time interval is programmable.

Sleep mode 3 is activated by software commands. For more information, see Ref. [6].

A device can come out of Sleep mode 3 and into a fully ACTIVE state before the next targeted wake-

up time interval via a GPIO wake-up.

Core System

7.1

Arm Cortex-M4F Processor

The Cortex-M4F processor is a low-power processor that features low gate count, low interrupt

latency, low-cost debug, and includes floating point arithmetic functionality. The processor is intended

for deeply embedded applications that require fast interrupt response features.

The features of the Cortex-M4F processor in DA16200 are summarized below:

■ Operation clock frequency is up to 160 MHz

■ 32-bit Arm Cortex-M4F architecture optimized for embedded applications

■ Thumb-2 mixed 16/32-bit instruction set

■ Hardware division and fast multiplication

■ Includes Nested Vectored Interrupt Controller (NVIC)

■ SysTick timer provided by Cortex-M4F processor

■ Supports both standard JTAG (5-wire) and the low-pin-count Arm SWD (2-wire, TCLK/TMS)

debug interfaces

■ Cortex-M4F is binary compatible with Cortex-M3

For more information on the Arm Cortex-M4F, see Ref. [1].

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