ISL12024IBZ-T Intersil, ISL12024IBZ-T Datasheet - Page 23

• Manufacturer Part Number: ISL12024IBZ-T
• Description: IC RTC/CALENDAR EEPROM 8-SOIC
• Manufacturer: Intersil
• Type: Clock/Calendar/EEPROMr

Specifications of ISL12024IBZ-T

• Memory Size: 4K (512 x 8)
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL12024IBZ-TTR

• Mode D - This mode combines Legacy Mode battery
B (X1226
V
the I
drain.
switchover with no I
When the V
enter Battery Backup Mode and the I
disabled, minimizing V
MODE
Mode)
BAT
C
D
A
2
, then the device will enter Battery Backup Mode and
C interface will be disabled, minimizing V
SBIB BIT
DD
0
0
1
1
voltage drops below V
2
C operation in Battery Backup Mode.
BAT
BSW BIT
0
1
0
1
23
current drain.
V
V
Standard Mode,
Standard Mode,
SWITCHOVER
Legacy Mode,
Legacy Mode,
TRIP
TRIP
V
V
VOLTAGE
2
DD
DD
BAT
C interface will be
V
= 2.2V typ
= 2.2V typ
BAT
< V
< V
, the device will
BAT
BAT
BAT
current
I
2
C ACTIVE IN
BACKUP?
BATTERY
Yes
Yes
NO
NO
ISL12024
TABLE 8.
WRITE/READ
IN BATTERY
BACKUP?
EE PROM
Note that the IRQ/F
battery backup for all modes, allowing clocking of devices
while in Battery Backup Mode. The pull-up on the pin will
need to go to V
increase accordingly.
NO
NO
NO
NO
pull-up to V
pull-up to V
pull-up to V
pull-up to V
YES, needs
YES, needs
YES, needs
YES, needs
FREQ/IRQ
ACTIVE?
BAT
, and thus battery mode current draw will
OUT
BAT
BAT
BAT
BAT
open drain output pin is active in
V
V
V
V
needed on I
Battery Backup.
V
V
V
BAT
TRIP
BAT
BAT
BAT
TRIP
BAT
switchover at lower of V
. Pull-ups needed on I
to operate in Battery Backup.
switchover at <V
switchover at lower of V
.
switchover at <V
2
C to V
NOTES
BAT
DD
DD
to operate in
August 18, 2008
. Pull-ups
.
2
C to
BAT
BAT
FN6370.3
or
or