MT7697D datasheet(15/84 Pages) ETC2

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MT7697D

Internet-of-Things Wireless Connectivity

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Figure 2-2. MT7697D Power State

Table 2-2. Power States for CM4 Subsystem

MCU mode

Description

Wake-up time

Power

CM4 active

MCU executing code at PLL clock

n/a

CM4

standby

MCU subsystem clocks are gated off and the state of the entire

subsystem is retained. PLL is off.

TBD

CM4 sleep

MCU subsystem clocks are gated off and the state of the entire

subsystem is retained. Only 32KHz clock from XTAL is active. MCU

is configured to wake up on the expiry of the internal timer and

external wake-up events.

TBD

1mA

PMU sleep

CM4_OFF is power gated. XTAL and PMU operate in low power

mode. MCU is configured to wake up on the expiry of the internal

timer and external wake-up events.

TBD

0.3mA

Table 2-3. Power States for N9 Subsystem

MCU mode

Description

Wake-up time

Power

N9 active

MCU executing code at PLL clock.

n/a

MCU idle

MCU clock is gated off, while MCU subsystem clocks are on to

maintain the operation of Wi-Fi function, like listening to beacon.

PLL is on.

TBD

N9 standby

MCU subsystem clocks are gated off and the state of the entire

subsystem is retained. PLL is off.

TBD

N9 sleep

MCU subsystem clocks are gated off and the state of the entire

subsystem is retained. Only 32KHz clock from XTAL is active. MCU

is configured to wake up on the expiry of the internal timer,

external wake-up events, or the wake-up events from Wi-Fi radio

or Bluetooth ratio.

TBD

1mA

PMU sleep

TOP_OFF (N9) and WF_OFF are power gated. XTAL and PMU

operate in low power mode. The state information is retained in

back-up buffer (sleep-mode memory) and can be restored when

TBD

0.3mA

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