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VD5377 Fiches technique(PDF) 14 Page - STMicroelectronics

No de pièce VD5377
Description  Ultra-low power motion sensor for optical finger navigation (OFN)
PDF  88 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VD5377 Fiches technique(HTML) 14 Page - STMicroelectronics

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Application schematics
VD5377
14/88
Doc ID 022952 Rev 2
Figure 4. 1.8 V direct supply
Note:
In a 1.8 V direct drive configuration, the POWERDOWN pin should be connected to 1.8 V to
ensure the internal regulator is switched off to minimize power consumption.
3.1
Signal descriptions
STANDBY
VLED
SCL
SDA
MOTION
I2C_SEL0
I2C_SEL1
I2C_SEL2
LED_OUT
DVSS
BACKLED0
BACKLED1
BACKLED2
DVDD
GPIO0
MOTION
TEST_CLK
SDA
2
1
3
4
5
6
7
8
9
19
20
22
23
24
SCL
10
DVSS
11
18
17
16
14
13
AVSS 25
26
AVDD
DVSS 21
12
15
VD5377
NC
NC
1.8V
1.8V
1.8V
Optional I2C
Address
Navigation
LED
220 nF
GND
Table 7. Signal descriptions
Pad #
Signal name
Type
Description
1
DVSS
Supply
Digital ground
2
I2C_SEL0
1.8V digital input
I2C address select input.
5 V tolerant inputs with integrated pull-down resistor.
If unconnected default address is 0xA6.
(Pads have internal 35 kOhm pull-down resistors. If connected
to VDD, the pull-down resistor is disconnected after the internal
microcontroller boot sequence is completed to reduce power
consumption).
3
I2C_SEL1
1.8V digital input
4
I2C_SEL2
1.8V digital input
5
LED_OUT
Current DAC output
Navigation LED drive pad. Constant current sink set by internal
DAC. Maximum setting 14 mA. For external LED driver use
GPIO0.
6
DVSS
Supply
Digital ground
7
DVDD
Supply
1.8 V digital supply



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