em6325 EM Microelectronic, em6325 Datasheet - Page 5

• Manufacturer Part Number: em6325
• Description: Reset Circuit With Manual Reset
• Manufacturer: EM Microelectronic

Timing Waveforms
Manual Reset Input
A logic low on
it returns high.
CMOS logic levels or with open-drain outputs. Connect a normally open momentary switch from
manual-reset function; debounce circuitry is integrated. If
environment, connect a 0.1μF capacitor from
pull-up resistor can also be added).
Copyright © 2008, EM Microelectronic-Marin SA
01/08 – rev. M
Note 6: t
Note 7: Overdrive = V
RESET
RESET
V
MR
DD
SEN
logic "1"
logic "0"
logic "1"
logic "0"
logic "1"
logic "0"
= Maximum Transient Duration. Please refer to figure on the next page.
MR
MR
0.8V
V
asserts a reset. Reset remains asserted while
TH
has an internal 15kΩ pull-up resistor, so it can be left open if unused. This input can be driven with
TH
-V
DD
. Please refer to figure on the next page.
MR
to V
t
POR
SS
to provide additional noise immunity (stronger external additional
MR
is driven from long cable or the device is used in a noisy
MR
5
t
SEN
is low, and for t
Overdrive
POR
t
PMD
t
MD
(200ms nominal for EM6325C) after
t
POR
MR
www.emmicroelectronic.com
to V
EM6325
SS
to create a
t
P
V
t
t
t
t
HYS