ASI4UC-G1-SR-7 ZMDI, ASI4UC-G1-SR-7 Datasheet - Page 49

• Manufacturer Part Number: ASI4UC-G1-SR-7
• Description: Interface - Specialized ASI
• Manufacturer: ZMDI

Specifications of ASI4UC-G1-SR-7

• 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

Note: The power-on reset circuit has a threshold voltage reference. This reference matches the process
3.11.2. Logic controlled Reset
The IC also becomes reset after reception of Reset_Slave or Broadcast_Reset commands, expiration of the
(enabled) Communication Watchdog or entering of a forbidden state machine state (i.e. due to heavy EMI).
Note: In case the Addressing Channel is activated and the AC Current Input Mode is selected, Reset_Slave
and Broadcast_Reset calls are processed differently than in normal operation! See corresponding
explanations in chapter 3.3 Addressing Channel Input IRD on page 28.
3.11.3. External Reset
The IC can be reset externally by pulling the DSR pin LOW for more than a minimum reset time. The external
reset input function is provided in every operational mode of the IC – Slave Mode, Master Mode, Repeater
Mode and Monitor Mode. The following signal timings apply:
Table 32: Timing of external reset
Symbol Parameter
t
t
t
DSR
Figure 18: Timing diagram external Reset via DSR
In contrast to the A²SI, the external reset is generated “edge sensitive” to the expiration of the t
The initialization procedure is starting immediately after the event, independent of the state of DSR. A Serious
Peripheral Fault is recognized in Slave Mode if DSR still remains LOW after t
error state display is described in chapter 3.9 LED outputs on page 46.
Data Sheet
January 30, 2012
DO0..DO3
PO0..PO3
noRESET
RESET
INIT
ASI4U / ASI4U-E
Spec. 3.0 Com
tolerance of the logic levels and must not be very accurate. All values depend slightly on the raise and
fall time of the supply voltage.
DSR LOW time for no reset initiation
Reset execution time,
DSR H/L transition to Hi-Z output drives at DO0...DO3, P0…P3
State Machine initialization time after reset (E²PROM read out)
© 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.
pliant Universal AS-I IC
data port output data
parameter port output data
t
t
noRESET
RESET
t
Hi-Z
Hi-Z
INIT
Min
RESET
Peripheral Fault
Serious
+ t
Max
35
44
2
INIT
. The corresponding
Unit
µs
µs
ms
RESET
49 of 63
Note
timer.