IMP809, IMP81 0
Pin Descriptions
Pin Number
1
2
(IMP809)
2
(IMP810)
3
Name
GND
RESET
RESET
V
CC
Function
Ground
RESET is asserted LOW if V
CC
falls below the reset threshold and remains LOW for the
240ms typical reset timeout period (140ms minimum) after V
CC
exceeds the threshold.
RESET is asserted HIGH if V
CC
falls below the reset threshold and remains HIGH for the
240ms typical reset timeout period (140ms minimum) after V
CC
exceeds the threshold.
Power supply input voltage (3.0V, 3.3V, 5.0V)
Detailed Descriptions
Reset Timing
The reset signal is asserted–LOW for the IMP809 and HIGH for the
IMP810–when the V
CC
signal falls below the threshold trip voltage
and remains asserted for 140ms minimum after the V
CC
has risen
above the threshold.
5V
V
CC
0V
V
TH
Active Reset
Timeout Period
140ms
minimum
IMP809
5V
RESET
0V
5V
RESET
0V
IMP810
809/10_03.eps
Figure 1. Reset Timing Diagram
4
A1PROS [ A1 PROS CO., LTD. ]
