
13
Parameter
Symbol
Minimum
Typical
Maximum
Units
Notes
Motion delay after
reset
Shutdown
t
MOT-RST
23
ms
From SW_RESET register write to valid motion,
assuming motion is present
From Shutdown mode active to low current
t
STDWN
50
ms
Wake from
shutdown
t
WAKEUP
23
ms
From Shutdown mode inactive to valid motion.
Notes: A RESET must be asserted after a shutdown.
Refer to section "Notes on Shutdown and Forced
Rest", also note t
MOT-RST
From RESTEN bits set to low current
Forced Rest enable
t
REST-EN
1
s
Wake from Forced
Rest
MISO rise time
t
REST-DIS
1
s
From RESTEN bits cleared to valid motion
t
r-MISO
150
300
ns
C
L
= 100pF
MISO fall time
t
f-MISO
150
300
ns
C
L
= 100pF
MISO delay after
SCLK
MISO hold time
t
DLY-MISO
120
ns
From SCLK falling edge to MISO data valid, no load
conditions
Data held until next falling SCLK edge
t
hold-MISO
0.5
1/f
SCLK
us
MOSI hold time
t
hold-MOSI
200
ns
Amount of time data is valid after SCLK rising edge
MOSI setup time
t
setup-MOSI
120
ns
From data valid to SCLK rising edge
SPI time between
write commands
SPI time between
write and read
commands
SPI time between
read and
subsequent
commands
SPI read address-
data delay
NCS inactive after
motion burst
t
SWW
30
μ
s
From rising SCLK for last bit of the first data byte, to
rising SCLK for last bit of the second data byte.
From rising SCLK for last bit of the first data byte, to
rising SCLK for last bit of the second address byte.
t
SWR
20
μ
s
t
SRW
t
SRR
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.
t
SRAD
4
μ
s
From rising SCLK for last bit of the address byte, to
falling SCLK for first bit of data being read.
Minimum NCS inactive time after motion burst
before next SPI usage
t
BEXIT
500
ns
NCS to SCLK active
t
NCS-SCLK
120
ns
From NCS falling edge to first SCLK rising edge
SCLK to NCS
inactive (for read
operation)
SCLK to NCS
inactive (for write
operation)
NCS to MISO high-Z t
NCS-MISO
t
SCLK-NCS
120
ns
From last SCLK rising edge to NCS rising edge, for
valid MISO data transfer
t
SCLK-NCS
20
μ
s
From last SCLK rising edge to NCS rising edge, for
valid MOSI data transfer
500
ns
From NCS rising edge to MISO high-Z state
MOTION rise time
t
r-MOTION
150
300
ns
C
L
= 100pF
MOTION fall time
t
f-MOTION
150
300
ns
C
L
= 100pF
Transient Supply
Current
I
DDT
30
mA
Max supply current during a V
DD
ramp from 0 to 2.8V
AC Electrical Specifications
Electrical Characteristics over recommended operating conditions. Typical values at 25 °C, V
DD
=2.8V.