VD5377 datasheet(30/88 Pages) STMICROELECTRONICS

No. de pieza	VD5377

Descripción Electrónicos	Ultra-low power motion sensor for optical finger navigation (OFN)

PDF	88 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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30 / 88 page

I/O description

VD5377

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Doc ID 022952 Rev 2

Figure 15. In AUTOMATIC mode the STANDBY pin functions as I2C enable if

use_standby_pin is selected

5.5

POWERDOWN

POWERDOWN is a 3.0 V capable analog input pad referenced to Vtop. The input switching

level is 0.8 V and is compatible with 1.8 V and 2.8 V systems. When POWERDOWN is set

to 1 the core 1.8 V digital supply is switched off. The device typically consumes <1 µA in this

state(a). When POWERDOWN is set to 0, the internal 1.8 V core regulator is enabled and

the power-up sequence is initiated (see Figure 8: Manual power mode timing diagram on

page 19). The device requires full re-initialization after POWERDOWN.

Note:

In a 1.8 V direct drive configuration where the internal regulator is not used, the

POWERDOWN pin should be connected to VDD to ensure the regulator is disabled (see

Figure 4: 1.8 V direct supply on page 14).

MOTION

Internal Osc

STATE

SLEEP

RUN

STANDBY

I2C Comms

Minimum time = 10 us

a. See the note in Section 5.3: MOTION on page 28.

VD5377 Datasheet(PDF) 30 Page - STMicroelectronics