AS7000 datasheet(61/92 Pages) AMSCO

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ams Datasheet

Page 61

[v1-12] 2018-Feb-26

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AS7000 − Detailed Description

Power Management and Operating Modes

After the supply (VDD) is asserted the AS7000 automatically

starts up. It is up to the application software into which

operating mode the AS7000 is changed (e.g. to power down

mode).

The AS7000 can operate in following modes:

Figure 71:

AS7000 Operating Modes

Note(s):

1. Wakeup by GPIO7=high if gpio7_wakeup_en=1; applies for power down and deep sleep mode.

2. Wakeup by GPIO8=low if gpio8_wakeup_en=1.

3. In power down mode the AS7000 will always wakeup if GPIO8=low independent of previous setting of gpio8_wakeup_en.

Mode

Internal

LDO (V_

LDO)

512Hz

Oscillator

16MHz

Oscillator

CPU

Wake Up CPU to

Active Mode By

Entered By

Active





Running

Sleep

mode





Idle

Any interrupt

(any timer, GPIO)

__WFI()

command of

CPU

Deep

sleep

mode





= reset;

registers

keep

content

512Hz sleep_counter,

GPIO7(1) and GPIO8(2)

Use ams SDK

for entering

deep sleep

Power

down





= reset;

registers

are reset

GPIO7(1) and GPIO8(3)

enter_

powerdown=

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