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VD5377CB Datasheet(PDF) 15 Page - STMicroelectronics

Part # VD5377CB
Description  Ultra-low power motion sensor for optical finger navigation (OFN)
PDF  88 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VD5377CB Datasheet(HTML) 15 Page - STMicroelectronics

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Doc ID 022952 Rev 2
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VD5377
Application schematics
8
BACKLED0
1.8V digital I/O
Backlight LED Driver (4 mA, open-drain). 5 V tolerant.
If unused, connect to DVSS.
9
BACKLED1
1.8V digital I/O
Backlight LED Driver (4 mA, open-drain). 5 V tolerant.
If unused, connect to DVSS.
10
BACKLED2
1.8V digital I/O
Backlight LED Driver (4 mA, open-drain). 5 V tolerant.
If unused, connect to DVSS.
11
DVSS
Supply
Digital ground
12
DVDD
Supply
1.8 V digital supply
13
POWERDOWN
Analog input
Active high. This disables the internal 1.8 V core regulator.
Input switching level is 0.8 V to be compatible with 1.8 V or
2.8 V signal.
14
POR_TEST
-
No connect
15
VTOP
Supply
Internal 1.8 V regulator supply input:
– 2.2 to 3.0 V for internal regulator configuration
– 1.8 V in direct drive mode.
16
STANDBY
1.8V digital input
If use_standby_pin register is selected (register 0x5 bit 4):
– In manual mode STANDBY = 1 puts the device in low power
mode
– In auto mode STANDBY = 1 disables I2C
Otherwise, connect to DVSS if not used.
This pad is 5 V tolerant.
17
DVREG
Supply
1.8V internal regulator output. Connect to DVDD and AVDD
supplies. Requires a 220 nF capacitor to DVSS.
18
DVSS
Supply
Digital ground
19
GPIO0
3.0V digital I/O
External LED drive control signal or general purpose I/O.
Referenced to Vtop. This pad is 5 V tolerant.
20
MOTION
3.0V digital output
Motion detection flag.
Configurable as Push/Pull or open-drain.
Active high or low (programmable polarity).
Referenced to Vtop. This pad is 5 V tolerant.
21
DVSS
Supply
Digital ground
22
TEST_CLK
-
No connect
23
SDA
1.8V digital I/O
I2C bidirectional data (open-drain).
This pad is 5 V tolerant.
24
SCL
1.8V digital input
I2C clock.
This pad is 5 V tolerant.
25
AVSS
Supply
Analog ground
26
AVDD
Supply
1.8 V analog supply
Table 7. Signal descriptions (continued)
Pad #
Signal name
Type
Description



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