vt82885 ETC-unknow, vt82885 Datasheet - Page 16

• Manufacturer Part Number: vt82885
• Description: Real Time Clock
• Manufacturer: ETC-unknow

POWER DOWN/POWER UP TIMING
(tA = 25 C)
NOTE
The real time clock will keep time to an
accuracy of 1 minute per month during data
retention time for the period of t
PARAMETER
CS# at V
V
(CS# at V
V
(CS# at V
CS# at V
PARAMETER
Expected Data Retention
CC
CC
V
CS#
CURRENT SUPPLIED
FROM EXTERNAL
LITHIUM ENERGY CELL
CC
slew from 4.5V to 0V
slew from 0V to 4.5V
4.5V
V
BAT
IH
IH
IH
IH
before Power-Down
after Power-Up
)
)
VIA Technologies, Inc.
t
F
t
PD
DR
SYMBOL
SYMBOL
.
t
t
t
REC
PD
t
DR
t
R
F
DATA RETENTION
MIN
MIN
300
100
16
20
10
0
t
DR
WARNING
Under no circumstances are negative
undershots, of any amplitude, allowed when
device is in battery backup mode.
TYP
TYP
MAX
MAX
200
Real Time Clock
t
REC
UNITS
UNITS
years
ms
t
R
s
s
s
VT82885
NOTES
NOTES