ISL12028 Real Time Clock/Calendar with I2C BusTM and EEPROM

The ISL12028 device is a low power real time clock with clock/calendar, power-fail indicator, clock output and crystal compensation, two periodic or polled alarms (CMOS output), intelligent battery backup switching, CPU Supervisor, integrated 512x8-bit EEPROM configured in 16 bytes 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 device has calendar registers for date, month, year and day of the week. The calendar is accurate through 2099, with automatic leap year correction.

ISL12028 特点

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
512x8 Bits of EEPROM:
- 16-Byte Page Write Mode (32 total pages)
- 8 Modes of BlockLockTM 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 (0.25s, 0.75s and 1.75s)
I2C Interface
- 400kHz Data Transfer Rate
14 Ld SOIC and 14 Ld TSSOP Packages
Pb-Free (RoHS Compliant)

ISL12028 应用

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

ISL12028 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL12028IB27AZ	量产	工业级	14 Ld SOIC	2	1.8
ISL12028IB27AZ-T	量产	工业级	14 Ld SOIC T+R	2	1.8
ISL12028IB27Z	量产	工业级	14 Ld SOIC	2	1.8
ISL12028IB27Z-T	量产	工业级	14 Ld SOIC T+R	2	1.8
ISL12028IB30AZ	量产	工业级	14 Ld SOIC	2	1.8
ISL12028IB30AZ-T	量产	工业级	14 Ld SOIC T+R	2	1.8
ISL12028IBAZ	量产	工业级	14 Ld SOIC	2	1.8
ISL12028IBAZ-T	量产	工业级	14 Ld SOIC T+R	2	1.8
ISL12028IBZ	量产	工业级	14 Ld SOIC	2	1.8
ISL12028IBZ-T	量产	工业级	14 Ld SOIC T+R	2	1.8
ISL12028IV27AZ	量产	工业级	14 Ld TSSOP	1	1.85
ISL12028IV27AZ-T	量产	工业级	14 Ld TSSOP T+R	1	1.85
ISL12028IV27Z	量产	工业级	14 Ld TSSOP	1	1.85
ISL12028IV27Z-T	量产	工业级	14 Ld TSSOP T+R	1	1.85
ISL12028IV30AZ	量产	工业级	14 Ld TSSOP	1	1.85
ISL12028IV30AZ-T	量产	工业级	14 Ld TSSOP T+R	1	1.85
ISL12028IVAZ	量产	工业级	14 Ld TSSOP	1	1.85
ISL12028IVAZ-T	量产	工业级	14 Ld TSSOP T+R	1	1.85
ISL12028IVZ	量产	工业级	14 Ld TSSOP	1	1.85
ISL12028IVZ-T	量产	工业级	14 Ld TSSOP T+R	1	1.85