DS14285SN+T&R Maxim Integrated, DS14285SN+T&R Datasheet - Page 22
![no-image](/images/no-image-200.jpg)
DS14285SN+T&R
Manufacturer Part Number
DS14285SN+T&R
Description
Real Time Clock
Manufacturer
Maxim Integrated
Series
DS14285, DS14287r
Datasheet
1.DS14285SNTR.pdf
(26 pages)
Specifications of DS14285SN+T&R
Rohs
yes
Function
Clock, Calendar, NV SRAM Control
Rtc Bus Interface
Multiplexed
Date Format
DW
Time Format
HH
Rtc Memory Size
114 B
Supply Voltage - Max
5.5 V
Supply Voltage - Min
4.5 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Package / Case
SOIC-24
POWER-DOWN/POWER-UP TIMING
POWER-DOWN/POWER-UP TIMING
(T
NOTE: The RTC keeps time to an accuracy of +1 minute per month during
data retention time for the period of t
WARNING: Under no circumstances are negative undershoots, of any
amplitude, allowed when device is in battery-backup mode.
V
V
Chip-Enable Propagation Delay to
External SRAM
Expected Data Retention for DS14287
CS
CS
A
CC
CC
= +25°C)
at V
at V
slew from 4.5V to 0V (
slew from 0V to 4.5V (
IH
IH
before Power-Down
after Power-Up
PARAMETER
PARAMETER
CS
CS
at V
at V
IH
IH
)
)
SYMBOL
SYMBOL
t
t
t
t
CED
REC
t
t
DR
PD
F
R
22 of 26
DR
.
MIN
MIN
300
100
20
10
0
TYP
TYP
MAX
MAX
200
10
UNITS
UNITS
years
ms
µs
µs
µs
ns
NOTES
NOTES
10