Datasheet

PRELIMINARY ISD1700 SERIES
Publication Release Date: Nov 6, 2008
- 15 - Revision 1.31
9.2
19
AC PARAMETERS
CHARACTERISTIC SYMBO
L
MIN TYP
[1]
MAX UNITS CONDITIONS
Sampling Frequency
[2]
F
S
4 12 kHz
[2] [4]
Duration
[3]
T
Dur
Refer to
duration
table
sec
[3]
Rising Time T
r
100 nsec
Falling Time T
f
100 nsec
Debounce Time T
Deb
192/F
S
msec
[4]
Ramp Up Time T
RU
128/F
S
msec
Ramp Down Time T
RD
128/F
S
msec
Initial Scan Time after
power is applied
T
Sc1
DRN/8/F
S
msec DRN= device row#
[4]
Initial Scan Time from PD
state
T
Sc2
DRN/16/F
S
msec After a PB operation
is run
[4]
End Recording Time T
ER
32/F
S
msec
[4]
LED High Time T
LH
0.5K/F
S
msec
[4]
LED Flash Time for SE1 T
LS1
3.5K/F
S
sec SE1 not recorded
[5]
LED Flash Time for SE2 T
LS2
7.5K/F
S
sec SE2 not recorded
[5]
LED Flash Time for SE3 T
LS3
11.5K/F
S
sec SE3 not recorded
[5]
LED Flash Time for SE4 T
LS4
15.5K/F
S
sec SE4 not recorded
[5]
SE1 Recorded Duration T
SE1
4K/F
S
sec
[4] [5]
SE2 Recorded Duration T
SE2
4K/F
S
sec
[4] [5]
SE3 Recorded Duration T
SE3
4K/F
S
sec
[4] [5]
SE4 Recorded Duration T
SE4
4K/F
S
sec
[4] [5]
Erase Time T
E
10MRN/F
S
sec MRN=message row #
[4]
Global Erase Wait Time T
GE1
20K/F
S
sec
[4] [5]
Global Erase Time T
GE2
34/F
S
sec
RESET Pulse T
Reset
1
μsec
All Fs
[4]
Settle Time T
Set1
128/F
S
msec
[4]
Settle Time after Reset T
Set2
64/F
S
msec
[4]
LED Error Time T
LErr
27.5K/F
S
msec
[4] [5]
LED Cycle frequency T
Cyc
1 4 Hz Pending upon F
S
Notes:
[1]
Typical values: V
CC
= 4.5 V, F
S
= 8 kHz and @ T
A
= 25°C, unless otherwise stated.
[2]
Characterization data shows that sampling frequency resolution is ±5 percent across temperature and voltage
ranges.
[3]
Characterization data shows that duration resolution is ±5 percent across temperature and voltage ranges.
[4]
Vcc=2.4 V~5.5V
[5]
K = 1024