PT7C4337AC中文资料I2C Interface RTC module with internal Crystal数据手册Diodes规格书

描述 Description

The PT7C4337A/4337AC serial real-time clock is a low-power clock/calendar with two programmable time-of-day alarms and a programmable square-wave output.Address and data are transferred serially via a 2-wire, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator.The device is fully accessible through the serial interface while VCC is between 1.8V and 5.5V. I2C operation is not guaranteed below 1.8V. Timekeeping operation is maintained with VCC as low as 1.2V.Table 1 shows the basic functions of PT7C4337A/ 4337AC. More details are shown in section: overview of functions.

特性 Features

Using external 32.768kHz quartz crystal for PT7C4337A
Using internal 32.768kHz quartz crystal for PT7C4337AC
Supports I2C-Bus's high speed mode (400 kHz)
Includes time (Hour/Minute/Second) and calendar (Year/Month/Date/Day) counter functions (BCD code)
Programmable square wave output signal
Two Time-of-Day Alarms
Oscillator Stop Flag
Operating range: 1.8V to 5.5V
Timekeeping range: 1.2V to 1.8V

简介

PT7C4337AC属于集成电路（IC）的实时时钟。由制造生产的PT7C4337AC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。