SAP51C-A-G1-R ZMDI, SAP51C-A-G1-R Datasheet - Page 33

• Manufacturer Part Number: SAP51C-A-G1-R
• Description: Interface - Specialized ASI
• Manufacturer: ZMDI

Specifications of SAP51C-A-G1-R

• Rohs: yes
• Product Type: Actuator Sensor Interface IC
• Operating Supply Voltage: 16 V to 34 V
• Supply Current: 6 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOP-20
• Minimum Operating Temperature: - 25 C

4.7. Parameter Port and PSTBn
The parameter port is always configured for continuous bi-directional operation. However, once IO_Code=0x7
(see Table 25), the parameter ports will return to high impedance state right after a WPAR request because
they act as data input ports or safety data ports for a following DEXG master call.
Every pin contains an NMOS open drain output driver plus a high voltage high impedance digital input stage.
Received parameter output data is stored at the Parameter Output Register and subsequently forwarded to
the open drain output drivers. A certain time (t
corresponding inputs are sampled. Due to the open drain character of the output driver, the input value results
from a wired AND combination of the parameter output value and such signals driven to the port by external
sources.
The availability of new parameter output data is signaled by the Parameter Strobe (PSTBn) signal as shown in
Figure 6.
Besides the basic I/O function, the first parameter output event after an IC reset has an additional meaning. It
enables the data exchange functionality.
Any IC reset turns the Parameter Output Register to 0xF and forces the parameter output drivers to high
impedance state. Simultaneously, a Parameter Strobe is generated, having the same t
pulse width, as new output data would be driven.
Table 20: Timing Parameter Port
Symbol Parameter
t
t
t
t
1
2
3
Data Sheet
October 20, 2011
STB
PSTBn
PI-latch
P-off
The timing of the resulting voltage signal also depends on the external pull up resistor.
The parameter input data must be stable within the period defined by min. and max. values of t
concerns the IO configuration “7” only
SAP5S / SAP51
Universal Actuator-Sensor Interface IC
Output data is valid after PSTBn HIGH-LOW edge
Pulse width of Parameter Strobe (PSTBn)
Acceptance of input data
Parameter Port is at high impedance state after PSTBn HIGH-
LOW edge
© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 3.0
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.
PI-latch
) after new output data has arrived at the port, the
10.5
56.0
Min
0.0
6.0
12.5
64.5
Max
1.5
6.8
setup
timing and t
Unit
µs
µs
µs
µs
PI-latch
33 of 63
.
Note
PSTBn
1
2
3