ISL12028_1011 Datasheet, PDF (2/29 Pages) Intersil Corporation – Real Time Clock/Calendar with I2C Bus™ and EEPROM

ISL12028, ISL12028A
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
V_BAT TRIP
POINT
(V)
BSW BIT
DEFAULT
SETTING
V_RESET
VOLTAGE
(V)
TEMP. RANGE
(°C)
PACKAGE
(Pb-free)
PKG. DWG. #
ISL12028IB27Z
12028IB27Z
V_DD < V_BAT
BSW = 1
2.63
ISL12028IB27AZ 12028IB27 AZ
V_DD < V_BAT
BSW = 1
2.92
ISL12028IB30AZ 12028IB30 AZ
V_DD < V_BAT
BSW = 1
3.09
ISL12028IBZ
12028IBZ
V_DD < V_BAT
BSW = 1
4.38
ISL12028IBAZ
12028IBAZ
V_DD < V_BAT
BSW = 1
4.64
ISL12028IV27Z
12028 IV27Z
V_DD < V_BAT
BSW = 1
2.63
ISL12028IV27AZ 12028 27AZ
V_DD < V_BAT
BSW = 1
2.92
ISL12028IV30AZ 12028 30AZ
V_DD < V_BAT
BSW = 1
3.09
ISL12028IVZ
12028 IVZ
V_DD < V_BAT
BSW = 1
4.38
ISL12028IVAZ
12028 IVAZ
V_DD < V_BAT
BSW = 1
4.64
ISL12028AIB27Z 12028AIB 27Z
2.2
BSW = 0
2.63
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
14 Ld SOIC
14 Ld SOIC
14 Ld SOIC
14 Ld SOIC
14 Ld SOIC
14 Ld TSSOP
14 Ld TSSOP
14 Ld TSSOP
14 Ld TSSOP
14 Ld TSSOP
14 Ld SOIC
M14.15
M14.15
M14.15
M14.15
M14.15
M14.173
M14.173
M14.173
M14.173
M14.173
M14.15
ISL12028AIV27Z 2028A IV27Z
2.2
BSW = 0
2.63
-40 to +85 14 Ld TSSOP M14.173
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-
020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL12028, ISL12028A. For more information on MSL please see
techbrief TB363
Block Diagram
X1
32.768kHZ
X2
IRQ/F_OUT
SELECT
SCL
SDA
SERIAL
INTERFACE
DECODER
CONTROL
DECODE
LOGIC
8
RESET
OSC COMPENSATION
OSCILLATOR
FREQUENCY
DIVIDER
1Hz
TIMER
CALENDAR
LOGIC
TIME
KEEPING
REGISTERS
(SRAM)
CONTROL/
REGISTERS
(EEPROM)
STATUS
REGISTERS
(SRAM)
ALARM
WATCHDOG LOW VOLTAGE
TIMER
RESET
COMPARE
ALARM REGS
(EEPROM)
4k
EEPROM
ARRAY
BATTERY
SWITCH
CIRCUITRY
V_DD
V_BACK
2
FN8233.9
November 30, 2010