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| Real Time Clock/Calendar with EEPROM |
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| Ordering Information |
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 iBuy direct from Intersil
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 iBuy direct - out of stock
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 Request samples
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 Check distributor inventory
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Available in RoHS/Pb-Free
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| ISL12027IB27AZ |
Active |
Ind |
8 Ld SOIC |
1 |
1.65 |
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| ISL12027IB27AZ-T |
Active |
Ind |
8 Ld SOIC T+R |
1 |
1.65 |
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| ISL12027IB27Z |
Active |
Ind |
8 Ld SOIC |
1 |
1.65 |
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| ISL12027IB27Z-T |
Active |
Ind |
8 Ld SOIC T+R |
1 |
1.65 |
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| ISL12027IB30AZ |
Active |
Ind |
8 Ld SOIC |
1 |
1.65 |
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| ISL12027IB30AZ-T |
Active |
Ind |
8 Ld SOIC T+R |
1 |
1.65 |
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| ISL12027IBAZ |
Active |
Ind |
8 Ld SOIC |
1 |
1.65 |
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| ISL12027IBAZ-T |
Active |
Ind |
8 Ld SOIC T+R |
1 |
1.65 |
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| ISL12027IBZ |
Active |
Ind |
8 Ld SOIC |
1 |
1.65 |
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| ISL12027IBZ-T |
Active |
Ind |
8 Ld SOIC T+R |
1 |
1.65 |
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| ISL12027IV27AZ |
Active |
Ind |
8 Ld TSSOP |
1 |
1.71 |
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| ISL12027IV27AZ-T |
Active |
Ind |
8 Ld TSSOP T+R |
1 |
1.71 |
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| ISL12027IV27Z |
Active |
Ind |
8 Ld TSSOP |
1 |
1.71 |
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| ISL12027IV27Z-T |
Active |
Ind |
8 Ld TSSOP T+R |
1 |
1.71 |
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| ISL12027IV30AZ |
Active |
Ind |
8 Ld TSSOP |
1 |
1.71 |
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| ISL12027IV30AZ-T |
Active |
Ind |
8 Ld TSSOP T+R |
1 |
1.71 |
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| ISL12027IVAZ |
Active |
Ind |
8 Ld TSSOP |
1 |
1.71 |
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| ISL12027IVAZ-T |
Active |
Ind |
8 Ld TSSOP T+R |
1 |
1.71 |
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| ISL12027IVZ |
Active |
Ind |
8 Ld TSSOP |
1 |
1.71 |
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| ISL12027IVZ-T |
Active |
Ind |
8 Ld TSSOP T+R |
1 |
1.71 |
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| The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice. |
| MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020 |
| SMD = Standard Microcircuit Drawing |
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 Description |
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The ISL12027 device is a low power real time clock with timing and crystal compensation, clock/calender, power-fail indicator, two periodic or polled alarms, intelligent battery backup switching, CPU Supervisor and integrated 512 x 8-bit EEPROM, in 16 Byte per page format.
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 device has calendar registers for date, month, year and day of the week. The calendar is accurate through 2099, with automatic leap year correction. |
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 Key Features |
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Real Time Clock/Calendar
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Tracks Time in Hours, Minutes and Seconds
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Day of the Week, Day, Month and Year
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Two Non-Volatile Alarms
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Settable on the Second, Minute, Hour, Day of the Week, Day, or Month
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Repeat Mode (periodic interrupts)
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Automatic Backup to Battery or SuperCap
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On-Chip Oscillator Compensation
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Internal Feedback Resistor and Compensation Capacitors
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64 Position Digitally Controlled Trim Capacitor
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6 Digital Frequency Adjustment Settings to ±30ppm
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512 x 8-Bits of EEPROM
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16-Byte Page Write Mode (32 total pages)
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8 Modes of Block Lock™ Protection
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Single Byte Write Capability
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High Reliability
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Data Retention: 50 years
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Endurance: >2,000,000 Cycles Per Byte
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I2C* Interface
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400kHz Data Transfer Rate
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800nA Battery Supply Current
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Package Options
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8 Ld SOIC and 8 Ld TSSOP Packages
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Pb-Free (RoHS Compliant)
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| Related Documentation |
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 Application Note(s): |
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 Datasheet(s): |
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 Technical Brief(s): |
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 Evaluation Board(s): |
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 Technical Homepage: |
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 Parametric Data |
| | VCC (V) | | 2.7 to 5.5 | | | VBAT (V) | | 1.8 to 5.5 | | | IBAT (nA) | | 850 | | | Alarms | | 2 | | | Crystal Frequency Trimming | | Y | | | CPU Supervisory Function POR | | Y | | | CPU Supervisory Function Watchdog Timer | | Y | | | Battery Seal | | Y | | | Battery Backup | | Y | | | VTRIP for POR | | 5 Select VTRIP Levels from 2.63V to 4.64V | | | RESET_bar | | Y | | | Oscillator Compensation (ppm) | | -64 to +110 | | | SRAM | | 512x8-Bit EEPROM | |
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 Application Block Diagrams |
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| Applications |
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- 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
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| | ISL12026 | | Real Time Clock/Calendar with I2C Bus™ and EEPROM | | | ISL12026A | | Real Time Clock/Calendar with I2C Bus™ and EEPROM | | | ISL12028 | | Real Time Clock/Calendar with I2C Bus™ and EEPROM | | | ISL12029 | | Real Time Clock/Calendar with I2C Bus™ and EEPROM | |
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