MCP79410数据手册集成电路（IC）的实时时钟规格书PDF

描述 Description

The MCP79410 general purpose I2C™Compatible real-time clock/calendar (RTCC) is highly integrated with nonvolatile memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming for accuracy. Using a low-cost 32.768 kHz crystal or other clock source, time is tracked in either a 12-hour or 24-hour format with an AM/PM indicator and timing to the second, minute, hour, day of the week, day, month and year. As an interrupt or wakeup signal, a multifunction open drain output can be programmed as an Alarm Out or as a Clock Out that supports 4 selectable frequencies. In addition, non-volatile memory is included along with a Unique ID in a locked section of EEPROM that can be unlocked and programmed by the End User.

特性 Features

Hours, Minutes, Seconds, Day of Week, Day, Month, Year
Leap year compensated  to 2399
12/24 hour modes
1 PPM Resolution
±129 PPM Range
Dual Programmable Alarms
Clock output with selectable frequency
Alarm output
General Purpose output
Time logged on switchover to and from Battery Backup
I2C Clock Frequency up to 400 kHz
64 Bytes Battery-Backed SRAM
1Kb EEPROM Memory
Robust write unlock sequence
Operating Voltage 1.8V to 5.5V
Backup Voltage 1.3V to 5.5V
Low Typical Timekeeping Current
Automatic Switchover to Battery Backup

简介

MCP79410属于集成电路（IC）的实时时钟。由制造生产的MCP79410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。