AC Electrical Specifications
Parameter
Motion Delay After Reset
Electrical Characteristics over recommended operating conditions. Typical values at 25°C, V
DD3
= 2.85 V.
Symbol
t
MOT-RST
Min.
Typical
Max.
23
Units
ms
Notes
From POWER_UP_RESET register write
to valid motion, assuming motion is
present
From SHTDWN pin active to low current
From SHTDWN pin 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
From RESTEN bits cleared to valid
motion
C
L
= 100 pF
C
L
= 100 pF
From SCLK falling edge to MISO data
valid, no load conditions
Data held until next falling SCLK edge
Amount of time data is valid after SCLK
rising edge
From data valid to SCLK rising edge
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
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
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
From NCS falling edge to first SCLK rising
edge
From last SCLK rising edge to NCS rising
edge, for valid MISO data transfer
From last SCLK rising edge to NCS rising
edge, for valid MOSI data transfer
From NCS rising edge to MISO high-Z
state
C
L
= 100 pF
C
L
= 100 pF
Max supply current during a V
DD
ramp
from 0 to 2.8 V
Shutdown
Wake from Shutdown
t
SHTDWN
t
WAKEUP
50
1
ms
s
Forced Rest Enable
Wake from Forced Rest
MISO Rise Time
MISO Fall Time
MISO Delay After SCLK
MISO Hold Time
MOSI Hold Time
MOSI Setup Time
SPI Time Between Write
Commands
SPI Time Between Write
and Read Commands
t
REST-EN
t
REST-DIS
t
r-MISO
t
f-MISO
t
DLY-MISO
t
hold-MISO
t
hold-MOSI
t
setup-MOSI
t
SWW
0.5
200
120
30
150
150
1
1
300
300
120
1/f
SCLK
s
s
ns
ns
ns
µs
ns
ns
µs
t
SWR
20
µs
SPI Time Between Read and t
SRW
t
SRR
Subsequent Commands
500
ns
SPI Read Address-Data
Delay
NCS Inactive After Motion
Burst
NCS to SCLK Active
SCLK to NCS Inactive
(for Read Operation)
SCLK to NCS Inactive
(for Write Operation)
NCS to MISO High-Z
MOTION Rise Time
MOTION Fall Time
SHTDWN Pulse Width
Transient Supply Current
t
SRAD
4
µs
t
BEXIT
t
NCS-SCLK
t
SCLK-NCS
t
SCLK-NCS
t
NCS-MISO
t
r-MOTION
t
f-MOTION
t
P-SHTDWN
I
DDT
500
120
120
20
500
150
150
1
45
300
300
ns
ns
ns
µs
ns
ns
ns
s
mA
10
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