概览

简介

The ISL12022MR5421 device is a low power real time clock (RTC) with an embedded temperature sensor and crystal. Device functions include oscillator compensation, clock/calendar, power fail and low battery monitors, brownout indicator, one-time, periodic or polled alarms, intelligent battery backup switching, Battery Reseal™ function and 128 bytes of battery-backed user SRAM. The device is offered in a 20 Ld SOIC module that contains the RTC and an embedded 32. 768kHz quartz crystal. The calibrated oscillator provides less than ±5ppm drift over the full -40°C to +85°C temperature range. The RTC tracks time with separate registers for hours, minutes, and seconds. The calendar registers track date, month, year and day of the week and are accurate through 2099, with automatic leap year correction. Daylight Savings time adjustment is done automatically, using parameters entered by the user. Power fail and battery monitors offer user-selectable trip levels. The time stamp function records the time and date of switchover from VDD to VBAT power, and also from VBAT to VDD power. The ISL12022MR5421 has redesign package to increase Contact and Air Discharge ESD performance.

特性

  • Embedded 32.768kHz Quartz Crystal in the Package
  • 20 Ld SOIC Package (for DFN version, refer to the ISL12020M)
  • Calendar
  • On-chip Oscillator Temperature Compensation
  • 10-bit Digital Temperature Sensor Output
  • 15 Selectable Frequency Outputs
  • Interrupt for Alarm or 15 Selectable Frequency Outputs
  • Automatic Backup to Battery or Supercapacitor
  • VDD and Battery Status Monitors
  • Battery Reseal™ Function to Extend Battery Shelf Life
  • Power Status Brownout Monitor
  • Time Stamp for Battery Switchover
  • 128 Bytes Battery-Backed User SRAM
  • I2C-Bus™
  • RoHS Compliant

产品对比

应用

应用

  • Utility Meters
  • POS Equipment
  • Printers and Copiers
  • Digital Cameras

文档

类型 文档标题 日期
数据手册 PDF 1.48 MB
产品变更通告 PDF 75 KB
应用文档 PDF 303 KB
产品变更通告 PDF 117 KB
手册 - 开发工具 PDF 815 KB
应用文档 PDF 302 KB
6 items

设计和开发

软件与工具

软件下载

类型 文档标题 日期
软件和工具 - 其他 PDF 846 KB
EXE 7.85 MB
EXE 1.62 MB
EXE 3.02 MB
4 items

模型