ISL12025IBZ Intersil, ISL12025IBZ Datasheet - Page 2
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ISL12025IBZ
Manufacturer Part Number
ISL12025IBZ
Description
IC RTC/CALENDAR EEPROM 8-SOIC
Manufacturer
Intersil
Type
Clock/Calendar/Supervisor/EEPROMr
Specifications of ISL12025IBZ
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)
Bus Type
Serial (I2C)
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
Operating Temperature Classification
Industrial
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Pin Count
8
Mounting
Surface Mount
Clock Format
HH
Clock Ic Type
RTC
Interface Type
I2C, Serial
Memory Configuration
512 X 8
Supply Voltage Range
2.7V To 5.5V
Digital Ic Case Style
SOIC
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Block Diagram
Pin Descriptions
SOIC
1
2
3
4
5
6
7
8
PIN NUMBER
SCL
SDA
32.768KHZ
TSSOP
RESET
INTERFACE
DECODER
3
4
5
6
7
8
1
2
SERIAL
X1
X2
SYMBOL
RESET
V
CONTROL
GND
SDA
SCL
V
DECODE
X1
X2
BAT
LOGIC
DD
8
2
The X1 pin is the input of an inverting amplifier and is intended to be connected to one pin of an external
32.768kHz quartz crystal. X1 can also be driven directly from a 32.768kHz source.
The X2 pin is the output of an inverting amplifier and is intended to be connected to one pin of an external
32.768kHz quartz crystal.
RESET. This is a reset signal output. This signal notifies a host processor that the “watchdog” time period
has expired or that the voltage has dropped below a fixed V
output. Recommended value for the pull-up resistor is 5kΩ. If unused, connect to ground.
Ground.
Serial Data (SDA) is a bidirectional pin used to transfer serial data into and out of the device. It has an
open drain output and may be wire OR’ed with other open drain or open collector outputs.
The Serial Clock (SCL) input is used to clock all serial data into and out of the device. The input buffer on
this pin is always active (not gated).
This input provides a backup supply voltage to the device. V
that the V
Power Supply.
REGISTERS
CONTROL/
(EEPROM)
OSCILLATOR
OSC COMPENSATION
DD
supply fails. This pin should be tied to ground if not used.
WATCHDOG
TIMER
FREQUENCY
REGISTERS
STATUS
DIVIDER
(SRAM)
ISL12025
LOW VOLTAGE
RESET
1Hz
CALENDAR
ALARM
BRIEF DESCRIPTION
TIMER
LOGIC
COMPARE
ALARM REGS
EEPROM
REGISTERS
ARRAY
(EEPROM)
KEEPING
(SRAM)
4k
TIME
TRIP
BAT
supplies power to the device in the event
threshold. It is an open drain active LOW
CIRCUITRY
BATTERY
SWITCH
V
V
DD
BAT
August 13, 2008
FN6371.3