Low Cost and Low Power I2C RTC Real Time Clock/Calendar with Alarm Function and Dual IRQ Pins

The ISL12057 device is a low-power, real-time clock that is pin compatible and functionally equivalent to Maxim DS1337 with clock/calendar and alarm function.

The oscillator uses an external, low-cost 32.768kHz crystal with 6pF load capacitance. 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.

Features

• Pin Compatible to Maxim DS1337

• Functionally Equivalent to Maxim DS1337

• Real-Time Clock/Calendar

- Tracks Time in Hours, Minutes, and Seconds

- Day of the Week, Date, Month, and Year

• Dual Interrupts for Frequency Output and Alarm interrupts

• Four Selectable Frequency Outputs

• Two Alarms

- Settable to the Second, Minute, Hour, Day of the Week, and Date

• I2C Interface

- 400kHz Data Transfer Rate

• Small Package Options

- 8 Ld 2mmx2mm UTDFN

- 8 Ld MSOP

- 8 Ld SOIC

- Pb-Free (RoHS Compliant)

Applications

• Utility Meters

• HVAC Equipment

• Audio/Video Components

• Set-Top Box/Television

• Modems

• Network Routers, Hubs, Switches, Bridges

• Cellular Infrastructure Equipment

• Fixed Broadband Wireless Equipment

• Pagers/PDA

• Point Of Sale Equipment

• Test Meters/Fixtures

• Office Automation (Copiers, Fax)

• Home Appliances

• Computer Products

• Other Industrial/Medical/Automotive

ISL12057IUZ属于集成电路（IC） > 实时时钟。瑞萨科技有限公司制造生产的ISL12057IUZ实时时钟实时时钟 (RTC) 为几乎所有需要保持精确时间的电子设备提供时间和/或日期信息。时钟类型有二进制计数器、时钟/日历/监控器、历时计时器、幻时钟芯片、便携式系统控制器、温度记录器、时间事件记录器和计时器时钟外设。其包含 2 B 至 2 MB 不等的存储器，接口选项有 I2C、并行、串行、SPI、1 线式、2 线式、3 线式和 4 线式。