SAP5SD-A-G1-T Datasheet, PDF (34/63 Pages) List of Unclassifed Manufacturers – Universal Actuator-Sensor Interface IC

SAP5S / SAP51
Universal Actuator-Sensor Interface IC
Table 21: Timing Data Port Outputs
Symbol Parameter
Min Max Unit
t_STB
Output data is valid after DSTBn HIGH/LOW edge
0.0 1.5 µs
t_hold
Output driver is at high impedance state after DSTBn LOW/HIGH 0.2 1.0 µs
t_DSTBn Pulse width of Data Strobe (DSTBn)
6.0 6.8 µs
t_DI-latch Acceptance of input data
10.5 12.5 µs
1 _{Parameter is only valid if the respective data port is configured as I/O pin.}
2 _{The timing of the resulting voltage signal also depends on the external pull up resistor.}
3 _{The input data must be stable within the period defined by min. and max. values of tDI-latch.}
Note
1
2
3
4.8.2. Input Data Pre-Processing
t_STB
t_DSTBn
DSTBn
keep stable
D0..D3
data port output data
t_hold
t_DI-latch
data port input data
min
max
Figure 7: Timing diagram data port D0 ... D3 and DSTBn
Besides the standard input function the Data Port offers different data pre-processing features that can be
activated by setting corresponding flags in the Firmware Area of the E²PROM.
 Input Inverting
The input values of all four data input channels are inverted if the Invert_Data_In flag is set.
 Input Delay
If the Delay Mode is activated, a new input value is returned to the master if equal input data was sampled for
two consecutive Data_Exchange cycles. As long as the condition is not true, previous valid data is returned.
To suppress undesired input data validation in case of immediately repeated Data_Exchange calls (i. e. AS-i
Masters immediately repeat one Data_Exchange requests if no valid slave response was received on the first
request) input data sampling is blocked for 256µs (-6.25%) after every sampling event.
Data Sheet
July 17, 2012
© 2012 Zentrum Mikroelektronik Dresden AG — Rev. 3.1
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is PRELIMINARY and subject to
changes without notice.
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