DS1284Q+ Maxim Integrated Products, DS1284Q+ Datasheet - Page 13
![IC TIMEKEEPER WATCHDOG 28-PLCC](/photos/6/52/65249/406-28-plcc_sml.jpg)
DS1284Q+
Manufacturer Part Number
DS1284Q+
Description
IC TIMEKEEPER WATCHDOG 28-PLCC
Manufacturer
Maxim Integrated Products
Type
Watchdog Timerr
Datasheet
1.DS1284QN.pdf
(18 pages)
Specifications of DS1284Q+
Memory Size
50B
Time Format
HH:MM:SS:hh (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-LCC, 28-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
POWER-UP/POWER-DOWN CONDITION
POWER-DOWN/POWER-UP CONDITION
(T
WARNING: Under no circumstances are negative undershoots, of any amplitude, allowed
when device is in battery-backup mode.
CE at V
V
V
CE at V
Expected Data-Retention Time
(DS1286)
A
CC
CC
= +25°C)
Slew from 4.5V to 0V (CE at V
Slew from 0V to 4.5V (CE at V
IH
IH
before Power-Down
after Power-Up
PARAMETER
PARAMETER
IH
IH
)
)
SYMBOL
SYMBOL
t
t
t
REC
t
PD
t
DR
R
F
13 of 18
MIN
MIN
350
100
10
0
TYP
TYP
MAX
MAX
150
UNITS
UNITS
years
s
s
s
ns
DS1284/DS1286
NOTES
NOTES
9