12

AC Electrical Specifications

Electrical Characteristics over recommended operating conditions. (Typical values at 25 °C, VDD=5.0V, VDDIO= 2.8V)

Parameter

Symbol

Minimum

Typical

Maximum

Units

Notes

Motion delay

after reset

23

ms

From SW_RESET register write to valid motion,

assuming motion is present

Shutdown

50

ms

From Shutdown mode active to low current

Wake from

shutdown

23

ms

From Shutdown mode inactive to valid motion.

Notes: A RESET must be asserted after a shutdown.

Refer to section “Notes on Shutdown also note

MISO rise time

150

300

ns

MISO fall time

150

300

ns

MISO delay

after SCLK

120

ns

From SCLK falling edge to MISO data valid, no load

conditions

MISO hold time

0.5

us

Data held until next falling SCLK edge

MOSI hold time

200

ns

Amount of time data is valid after SCLK rising edge

MOSI setup time

ns

From data valid to SCLK rising edge

SPI time between

write commands

30

μs

From rising SCLK for last bit of the first data byte, to

rising SCLK for last bit of the second data byte.

SPI time between

write and read

commands

20

μs

From rising SCLK for last bit of the first data byte, to

rising SCLK for last bit of the second address byte.

SPI time between

read and subsequent

commands

500

ns

From rising SCLK for last bit of the first data byte, to

falling SCLK for the first bit of the address byte of

the next command.

SPI read address

-data delay

4

μs

From rising SCLK for last bit of the address byte, to

falling SCLK for first bit of data being read.

NCS inactive after

motion burst

500

ns

Minimum NCS inactive time after motion burst

before next SPI usage

NCS to SCLK active

120

ns

From NCS falling edge to first SCLK rising edge

SCLK to NCS inactive

(for read operation)

120

ns

From last SCLK rising edge to NCS rising edge, for

valid MISO data transfer

SCLK to NCS inactive

(for write operation)

20

us

From last SCLK rising edge to NCS rising edge, for

valid MOSI data transfer

NCS to MISO high-Z

500

ns

From NCS rising edge to MISO high-Z state

MOTION rise time

150

300

ns

MOTION fall time

150

300

ns

Transient Supply

Current

45

mA

Max supply current during a VDD ramp from 0 to

2.8V

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PixArt Imaging Inc.

PixArt Imaging Inc.

ADNS-7550 Integrated Molded Lead-Frame DIP Sensor