TC35680FSG datasheet(28/91 Pages) TOSHIBA

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TC35680FSG-002/TC35681FSG-002

2019-04-04

3.6. Low Power System

TC35680/TC35681 support the following three low power modes to save power consumption.



Sleep



Backup



Deep Sleep

The power consumption decreases in the order of the Sleep, the Backup, and the Deep Sleep modes. The lowest power

consumption is realized in the Deep Sleep mode.

The low power consumption function are independent of the operation mode (the HCI mode, the Complete mode or the User-App

mode).

State Transition

Figure 3-6 shows the state transition diagram of TC35680/TC35681. There are three main states.



Active mode



Reset



Low power mode

The Active mode is a normal operating state. The Reset is the state when a hardware reset is asserted. The Low power mode is

either the Sleep, the Backup or the Deep Sleep state.

In this document, the transition from the Low power mode to the Active mode is defined as “Wake-up”. And the transition from the

Active mode to the Low power mode is defined as “Sleeping”.

The transition from the Active mode to the Low power mode can be done by Sleeping. The direct transition among the low power

states is not possible.

Figure 3-6 State transition diagram

Sleep

State

Backup

State

Deep Sleep

State

Reset

Low power mode

Wake-up

Boot

Reset

Active

mode

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