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VD5377 데이터시트(PDF) 20 Page - STMicroelectronics

부품명 VD5377
상세설명  Ultra-low power motion sensor for optical finger navigation (OFN)
PDF  88 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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VD5377 데이터시트(HTML) 20 Page - STMicroelectronics

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System overview
VD5377
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Doc ID 022952 Rev 2
POWERDOWN pin is deasserted, the internal 1.8 V regulator is re-enabled triggering a
POR (Power-On Reset) and the MCU re-initializes as at power-up before entering the SW
STBY state. The device must be re-configured after POWERDOWN.
Key timing parameters are shown in Table 9.
Table 9. Manual mode timing constraints
Symbol
Parameter
Typical
t1
POR Delay
(POR threshold = 1.4 V typ)
20 µs
t2
Clock Startup
1 µs
t3
MCU boot time
450 µs
t4
Minimum Powerdown time (220 nF regulator capacitor)
10 ms
t5(1)
1. No I2C comms permitted to VD5377 after Standby pin asserted
Standby pin latency (up to 1 frame at 1 kf/s)
up to 1 ms



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