ISL12029IV27Z Intersil, ISL12029IV27Z Datasheet - Page 2

• Manufacturer Part Number: ISL12029IV27Z
• Description: IC RTC W/EEPROM 2.7V 14-TSSOP
• Manufacturer: Intersil
• Type: Clock/Calendar/Supervisor/EEPROMr

Specifications of ISL12029IV27Z

• 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: 14-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Block Diagram
Pin Descriptions
3, 4, 5, 10,
NUMBER
PIN
12
13
14
11
1
2
6
7
8
9
IRQ/F
SDA
SCL
OUT
IRQ/F
SYMBOL
32.768kHZ
RESET
GND
V
RESET
SDA
SCL
V
NC
X1
X2
INTERFACE
BAT
DD
DECODER
SERIAL
OUT
SELECT
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.
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
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).
Interrupt Output/Frequency Output is a multi-functional pin that can be used as interrupt or frequency output pin. It
is an open drain output. The function is set via the configuration register.
This input provides a backup supply voltage to the device. V
V
Power Supply.
No Internal Connection.
X1
X2
DD
2
CONTROL
DECODE
supply fails. This pin should be tied to ground if not used.
LOGIC
8
REGISTERS
CONTROL/
(EEPROM)
OSCILLATOR
OSC COMPENSATION
ISL12029, ISL12029A
WATCHDOG
TIMER
FREQUENCY
REGISTERS
STATUS
DIVIDER
(SRAM)
LOW VOLTAGE
RESET
1Hz
DESCRIPTION
ALARM
CALENDAR
LOGIC
TIMER
TRIP
BAT
threshold. It is an open drain active LOW output.
COMPARE
ALARM REGS
supplies power to the device in the event that the
EEPROM
ARRAY
(EEPROM)
REGISTERS
KEEPING
4k
(SRAM)
TIME
CIRCUITRY
BATTERY
SWITCH
December 16, 2010
V
V
DD
BACK
FN6206.10