ASI4UC-G1-MT ZMDI, ASI4UC-G1-MT Datasheet - Page 48

• Manufacturer Part Number: ASI4UC-G1-MT
• Description: Interface - Specialized ASI
• Manufacturer: ZMDI

Specifications of ASI4UC-G1-MT

• Product Category: Interface - Specialized
• Rohs: yes
• Product Type: Actuator Sensor Interface IC
• Operating Supply Voltage: 16 V to 33.1 V
• Supply Current: 6 mA
• Maximum Power Dissipation: 850 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Minimum Operating Temperature: - 25 C

3.11. IC Reset
Any IC reset turns the Data Output and Parameter Output Registers to 0xF and forces the corresponding
output drivers to high impedance state. Except at Power On Reset, Data Strobe and Parameter Strobe signals
are simultaneously generated to visualize possibly changed output data to external circuitry.
The Data_Exchange_Disable flag becomes set during IC reset, prohibiting any data port activity right after IC
initialization and as long as the external circuitry was not pre-conditioned by decent parameter output data.
Consequently the AS-i master has to send a Write_Parameter call in advance of the first Data_Exchange
request to an initialized slave. Following IC initialization times apply:
Table 30: IC Initialization times
Symbol Parameter
t
t
t
1
2
3
3.11.1. Power On Reset
In order to force the IC into a defined state after power up and to avoid uncontrolled switching of the digital
logic if the 5V supply (U5R) breaks down below a certain minimum level, a Power On Reset is executed under
the following conditions:
Table 31: Power On Reset Threshold Voltages
Symbol Parameter
V
V
t
1
Data Sheet
January 30, 2012
INIT
INIT2
INIT3
Low
guaranteed by design
‘power on’ starts latest at V
C
guaranteed by design
POR1F
POR1R
UIN
U5R
reset
ASI4U / ASI4U-E
Spec. 3.0 Com
UOUT
= 470µF, t
Initialization time after Software Reset (generated by master
calls Reset_Slave or Broadcast_Reset) or external reset via
DSR
Initialization time after power on
Initialization time after power on with high capacitive load
V
V
Power-on reset pulse width
U5R
U5R
voltage to trigger INIT procedure, rising voltage
voltage to trigger internal reset procedure, falling voltage 1.2
about 15V
© 2012 Zentrum Mikroelektronik Dresden AG — Rev. 2.1
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.
V
V
INIT3
pliant Universal AS-I IC
POR1R
POR1R
is guaranteed by design only
UIN
= 18V, external capacitor at pin UOUT less than or equal 10µF
Figure 17: Power-On Behavior (all modes)
t
LOW
Min
Min
3.5
4
Max
2
30
1000
Max
1.7
4.3
6
Unit
ms
ms
ms
Unit
V
V
µs
Note
1
2
3
Note
1
1
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