ISL12028IB27Z

Series: -
Type: Clock/Calendar
Time Format: HH:MM:SS (12/24 hr)
Date Format: YY-MM-DD-dd
Interface: I²C, 2-Wire Serial
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Packaging: Tube
Memory Size: -
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Voltage - Supply: 2.7 V ~ 5.5 V
Manufacturer: Intersil
Voltage - Supply, Battery: 1.8 V ~ 5.5 V
Features: Alarm, Leap Year, Supervisor, Watchdog Timer
Supplier Device Package: 14-SOICN


Features:

• Real Time Clock/Calendar
- Tracks time in Hours, Minutes, and Seconds
- Day of the Week, Day, Month, and Year
- 3 Selectable Frequency Outputs
• Two Non-Volatile Alarms
- Settable on the Second, Minute, Hour, Day of the Week, Day, or Month
- Repeat Mode (periodic interrupts)
• Automatic Backup to Battery or SuperCap
- Power Failure Detection
- 800nA Battery Supply Current
• On-Chip Oscillator Compensation
- Internal Feedback Resistor and Compensation Capacitors
- 64 Position Digitally Controlled Trim Capacitor
- 6 Digital Frequency Adjustment Settings to ±30ppm
• 512 x 8 Bits of EEPROM:
- 16-Byte Page Write Mode (32 total pages)
- 8 Modes of Block Lock™ Protection
- Single Byte Write Capability
- Data Retention: 50 years
- Endurance: >2,000,000 Cycles Per Byte
• CPU Supervisor Functions:
- Power On Reset, Low Voltage Sense
- Watchdog Timer (0.25, 0.75, 1.75 sec)
• I2C* Interface - 400kHz Data Transfer Rate
• 14 Ld SOIC and 14 Ld TSSOP Packages
• Pb-Free Plus Anneal Available (RoHS Compliant)


Application

• Utility Meters
• HVAC Equipment
• Audio/Video Components
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
• POS Equipment
• Test Meters/Fixtures
• Office Automation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial/Medical/Automotive


Pinout




Specifications

Voltage on VDD, VBAT, SCL, SDA, RESET and IRQ/FOUT Pins
(respect to ground) . . . . . . . . . . . . . . . . . . . . . . . . .. -0.3V to 6.0V
Voltage on X1 and X2 Pins
(respect to ground) . . . . . . . . . . . . . . . . . . . . . . . . .. -0.3V to 2.5V
Latchup (Note 1) . . . . . . . . . . . . . . . . .. Class II, Level B @ +85°C
ESD Rating (MIL-STD-883, Method 3014) . . . . . . . . . . . . . . .>±2kV
ESD Rating (Machine Model) . . . . . . . . . . . . . . . . . . . . . . . . .>175V


Description

The ISL12028 device is a low power real time clock with clock/calender, power-fail indicator, clock output and crystal compensation, two periodic or polled alarms (CMOS output), intelligent battery backup switching, CPU Supervisor, integrated 512 x 8 bit EEPROM configured in 16 Byte per page.

The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, and seconds. The ISL12028 has calendar registers for date, month, year and day of the week. The calendar is accurate through 2099, with automatic leap year correction.

Parameters:

Technical/Catalog Information	ISL12028IB27Z
Vendor	Intersil
Category	Integrated Circuits (ICs)
Date Format	YY-MM-DD-dd
Time Format	HH:MM:SS (12/24 hr)
Voltage - Supply	2.7 V ~ 5.5 V
Interface	I²C, 2-Wire Serial
Memory Size	4K (512 x 8)
Package / Case	14-SOIC
Packaging	Tube
Type	Clock/Calendar/Supervisor/EEPROM
Operating Temperature	-40°C ~ 85°C
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	ISL12028IB27Z ISL12028IB27Z