AS5040− ElectricalCharacteristics
Figure 17:
Synchronous Serial Interface (SSI)
Timing Characteristics
Synchronous Serial Interface (SSI)
Operating conditions: Tamb = -40°C to 125°C, VDD5V = 3.0V to
3.6V (3V operation) VDD5V = 4.5V to 5.5V (5V operation) unless
otherwise noted.
Symbol
Parameter
t DO active
Data output activated
(logic high)
tCLK FE
First data shifted to
output register
T CLK / 2 Start of data output
t DO valid Data output valid
t DO tristate Data output tristate
t CSn
Pulse width of CSn
fCLK
Read-out frequency
Min Typ Max Unit
Note
100
ns
Time between falling edge of CSn
and data output activated
500
ns
Time between falling edge of CSn
and first falling edge of CLK
500
ns
Rising edge of CLK shifts out one bit
at a time
357
413
ns
Time between rising edge of CLK
and data output valid
100
ns
After the last bit DO changes back to
“tristate”
500
ns
CSn = high; To initiate read-out of
next angular position
>0
1
MHz
Clock frequency to read out serial
data
Page 14
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[v2-12] 2017-Jun-20