SMM766
Preliminary Information
AC OPERATING CHARICTERISTICS
Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND. See Figure 5
and 6 Timing diagrams.
Symbol
Description
Conditions
Min
Typ
Max
Unit
TDPON = 0.64MS
Programmable power-on delay
from restart timer expiration to
PUPY active
TDPON = 12.5MS
TDPOFF = 25MS
TDPOFF = 50MS
TDPOFF = 0.64MS
tDPON
-25
tDPON
+25
%
Programmable power-off delay
from VMX off to PUPY inactive
tDPOFF
-25
-25
tDPOFF
+25
+25
%
%
T
DPOFF = 12.5MS
TPRTO = 0.64MS
TPRTO = 25MS
Programmable reset time-out delay
tPRTO
tPRTO
TPRTO = 100MS
TPRTO = 200MS
TSTT = OFF
Programmable sequence
termination timer
TSTT = 100MS
tSTT
-25
tSTT
+25
%
TSTT = 200MS
TSTT = 400MS
Time from restart timer
expiration to PUPY active
after a fault-triggered power-
off or force-shutdown.
Fault-triggered restart delay
tFTRD
tFTRDACC
tCTRD
2.4
s
Fault-triggered restart delay
accuracy
-25
-25
tFTRD
12.5
+25
+25
%
Time from restart timer
expiration to PUPY active
after command-triggered
power-off or force-shutdown.
Command-triggered restart delay
ms
Command-triggered restart delay
accuracy
tCTRDACC
TADC
tCTRD
2.0
%
Time for ADC conversion of
all 11 channels
10-bit ADC sampling period
ms
Update period for ADOC of
channels
ADOC sampling period
TDC_CONTROL
1.7
850
85
ms
ms
ms
A – F
Slow Margin, + 10% change
in voltage with 0.1% ripple
TRIM_CAP=1µF
tMARGIN
Margin Time from Nominal
Fast Margin, + 10% change
in voltage with 0.1% ripple
TRIM_CAP=1µF
Summit Microelectronics, Inc
2086 2.1 12/13/2005
11
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
