ZENTRUM MIKROELEKTRONIK DRESDEN AG
“ASI for you” IC
Datasheet
3.4 Digital Inputs - DC Characteristics
The following pins contain digital high voltage input stages:
-
Input-only pins:
I/O pins:
DI0 … DI3, FID
-
P0 … P3, DSR, PST1, LED21
Table 14: DC Characteristics of digital high voltage input pins
Symbol Parameter
Min
0
Max
2.5
Unit
V
Note
VIL
Voltage range for input ”low” level
Voltage range for input ”high” level
Hysteresis for switching level
Current range for input ”low” level
Current range for input ”high” level
Capacitance at pin DSR
VIH
VHYST
IIL
3.5 VUOUT
0.25
V
V
2
-10
-10
-3
10
10
µA
µA
pF
IIH
V0 ≥ VU5R
3
CDL
1 PST and LED2 are inputs for test purposes only.
2 The pull-up current is driven by a current source connected to U5R. It stays almost constant for input voltages
ranging from 0 to 3.8V. The current source is disabled at the FID pin in Master- Repeater- and Monitor-Mode
to provide a straight analog signal input for the Power Fail comparator.
3 The internal pull-up current is sufficient to avoid accidental triggering of an IC reset if the DSR pin remains
unconnected. For external loads at DSR a certain pull up resistor is required to ensure VIH ≥ 3.5V in less than
35µs after the beginning of a DSR = Low pulse.
3.5 Digital Outputs - DC Characteristics
The following pins contain digital high voltage open drain output stages:
-
Output-only pins:
I/O pins:
DO0 … DO3, LED1
-
P0 … P3, DSR, PST1, LED21
Table 15: DC Characteristics of digital high voltage output pins
Symbol Parameter
Min
0
Max. Unit
Note
VOL1
VOL2
IOH
Voltage range for output ”low” level
Voltage range for output ”low” level
Output leakage current
1
V
V
IOL1 = 10mA
IOL2 = 2mA
0
0.4
10
-10
µA
V
0H ≥ VU5R
1 PST and LED2 are inputs for test purposes only.
Copyright © 2006, ZMD AG, Rev.1.4
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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ZMD [ Zentrum Mikroelektronik Dresden AG ]
