M41T0中文资料串行实时时钟（RTC）数据手册ST规格书

描述 Description

The M41T0 real-time clock is a low power serial real-time clock with a built-in 32.768 kHz oscillator (external crystal controlled). Eight registers are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. Addresses and data are transferred serially via a two-line bidirectional bus. The built-in address register is incremented automatically after each WRITE or READ data byte.

The M41T0 is supplied in 8-lead plastic small outline package.

特性 Features

• Counters for seconds, minutes, hours, day, date, month, years, and century
• 32 KHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation
• Oscillator stop detection monitors clock operation
• Serial interface supports I2C bus (400 kHz protocol)
• Low standby current 0.9 μA (typ at 3 V)
• 2.0 to 5.5 V clock operating voltage
• Special software programmable output
• Operating temperature of –40 to 85 °C

简介

M41T0属于集成电路（IC）的实时时钟。由制造生产的M41T0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。