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AS7000 датащи(PDF) 84 Page - ams AG

номер детали AS7000
подробное описание детали  The AS7000 device provides a flexible analog front end for light sensing applications
PDF  92 Pages
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производитель  AMSCO [ams AG]
домашняя страница  http://www.ams.com
Logo AMSCO - ams AG

AS7000 датащи(HTML) 84 Page - ams AG

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Page 84
ams Datasheet
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[v1-12] 2018-Feb-26
AS7000 − Application Information
Figure 116:
Measurement System With Motion Artefact Compensation Using AS7000 Dedicated Accelerometer
Note(s):
1. Accelerometer connected directly
In above configuration, the AS7000 I²C master is used to poll
the data from the accelerometer.
The AS7000 has internal protection diodes on all GPIO pins
connected to VDD. If VDD is switched off, all GPIO pins are
clamped to this VDD supply plus one diode voltage (typically
0.6V). Therefore connect the periphery supply of these pins
(example: I²C pins from host in above example connected to
GPIO2/3), which are connected to the AS7000 GPIO pins to the
same VDD supply as the AS7000. If this is not possible, ensure
that these pins are at logic 0 if the VDD supply of AS7000 is
switched off.
AS7000
M0 CPU
+ RAM/
EEPROM
& Interfaces
GPIO4
GPIO3
GPIO2
GPIO1
GPIO0
GPIO8
GPIO7
GPIO6
GPIO5
LDO
Ref
Optical barrier
AGND
SIGREF
VDD
V_LDO
GND
2.6V-3.6V
VD1
VD2
VD4
VD3
LED
Supply
(DCDC)
SCL
SDA
Accelerometer
Host
Processor
LCD
VDD LDO
3V
on
ON=0
I2C to AS7000
VDD
PMIC
+Charger
to LED Supply
Bluetooth
VBAT
VBAT
VBAT
GPIO2
GPIO3
VDD
on
GND
VD3/VD4: if not
used connect to
GND



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