Integra M2106+
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WA_DE_PTS_003-001
April, 2007
3.5
Reset Signal (~RST)
3.5.1
General Presentation
This signal is used to force a reset procedure by providing a low level for at least 500 µs.
This signal must be considered as an emergency reset only. A reset procedure is automatically driven by an
internal hardware component during the power-up sequence.
Pin description
Signal
Pin #
I/O
Reset state
I/O type
Description
~RST 19
I/O --
SCHMITT
Reset
This signal can also be used as an output to provide a reset to an external device. If no external reset is
necessary, this input can be left open. If it is used (emergency reset), it must be driven either by an open
collector or an open drain output:
OR
Switch RESET
RESET pin
Switch RESET
RESET pin
Figure 9: Reset application schematic
•
~RST pin 19 = 0, to activate Reset,
•
~RST pin 19 = 1, to deactivate Reset.
Reset signal electrical characteristics
Parameter
Min
Max
Unit
Input Impedance (R)
4.7
k
Ω
Input Impedance (C)
10
nF
Reset signal operating conditions
Parameter
Min
Max
Condition
*V
T-
1.1 V
1.2 V
*V
T+
1.7 V
1.9 V
V
OL
0.4
V
I
OL
= -50 µA
V
OH
2.0
V
I
OH
= 50 µA
* VT-, VT+: Hysteresis thresholds
•
Additional comments on Reset procedure:
