MT7697D datasheet(14/84 Pages) ETC2

14 / 84 page

MT7697D

Internet-of-Things Wireless Connectivity

Page 14 of 84

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Domain

Description

Circuit Included

OFF Condition

power save mode.

included.

WF_OFF

The power domain can be

power gated when Wi-Fi is

not used and in Wi-Fi power

save mode.

The whole Wi-Fi baseband

and part of the MAC

subsystem are included.

Wi-Fi is disabled.

N9 is in standby mode

or in sleep mode.

BT_OFF

The power domain can be

power gated when

Bluetooth is not used and in

Bluetooth power save

mode.

The whole Bluetooth

subsystem is included.

Bluetooth is disabled.

N9 is in standby mode

or in sleep mode.

CM4_OFF

The power domain is not

powered gated when

Cortex-M4 is used.

The whole Cortex-M4

subsystem and Cortex-M4

peripherals are included.

N/A

The MT7697D power state diagram is illustrated below. There are two sleep mode controllers,

controlled by N9 and CM4, respectively.

The N9 power state and CM4 power state operates independently. When both enter the sleep mode,

the XTAL and PMU can be changed to the low power mode to further lower the current consumption.

N9 active

Wi-Fi ON

PLL clock

N9 standby

XTAL 26MHz

N9 sleep

XTAL 32KHz

MCU idle

Wi-Fi ON

PLL clock

PMU sleep

XTAL/PMU in low

power mode

CM4 sleep

XTAL 32KHz

CM4 standby

XTAL 26MHz

CM4 active

PLL Clock

PMU sleep

XTAL/PMU in low

power mode

When both CM4 and N9

are in sleep mode, XTAL

and PMU is changed

to low power mode.

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