Real-Time Clock

General Description The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square w

文件：361.41 Kbytes 页数：22 Pages

Maxim

美信

Real Time Clock

DESCRIPTION The DS12887 Real Time Clock plus RAM is designed to be a direct replacement for the DS1287. The DS12887 is identical in form, fit, and function to the DS1287, and has an additional 64 bytes of general purpose RAM. Access to this additional RAM space is determined by the logic level pr

文件：584.91 Kbytes 页数：19 Pages

Dallas

Real-Time Clocks

文件：268.46 Kbytes 页数：22 Pages

Maxim

美信

实时时钟

DS12885、DS12887和DS12C887实时时钟(RTC)可用来直接替代DS1285和DS1287。该器件提供一个实时时钟/日历、定时闹钟、三个可屏蔽中断(共用一个中断输出)、可编程方波输出和114字节的电池备份静态RAM (DS12C887和DS12C887A包含113字节RAM)。DS12887在24引脚模块DIP封装内集成了晶体和锂电池。DS12C887在地址32h内增加了世纪字节。对于少于31天的月份，所有器件的日期能够在月末自动调整，带有闰年补偿。该器件可配置为24小时或12小时格式，带AM/PM指示。精确的温度补偿电路用于监视的VCC状态。一旦检测到主电源失效，器件可自动切 • 直接替代IBM AT计算机时钟/日历\n• RTC计算秒、分、时、星期、日、月、年信息，具有润年补偿，有效期至2099年\n• 用二进制或BCD表示时间\n• 具有AM、PM标示的12小时模式或24小时模式\n• 夏时制选择\n• 可选择Intel或Motorola总线时序\n• 接口配合软件可寻址128 RAM\n• 14字节时钟与控制寄存器\n• 114字节通用、电池备份RAM (DS12C887和DS12C887A为113字节)\n• 清除RAM功能(DS12885、DS12887A和DS12C887A)\n• 三路中断可分别通过软件屏蔽与检测\n• 闹钟可设置为每秒一次至每星期一次;

ADI

亚德诺

Package：24-DIP 模块（0.600"，15.24mm）；包装：管件 类别：集成电路（IC） 实时时钟 描述：IC RTC CLK/CALENDAR PAR 24-EDIP

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亚德诺

Real-Time Clock

General Description The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square w

文件：361.41 Kbytes 页数：22 Pages

Maxim

美信

Real-Time Clock

General Description The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square w

文件：217.33 Kbytes 页数：2 Pages

Maxim

美信

Real-Time Clock

General Description The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square w

文件：361.41 Kbytes 页数：22 Pages

Maxim

美信

Real Time Clock

DESCRIPTION The DS1287A is identical to the DS1287 with the addition of the RAM clear pin. For a complete description of operating conditions, electrical and mechanical characteristics, bus timing, and pin descriptions see the DS12887A data sheet. FEATURES •Drop-in replacement for IB

文件：17.21 Kbytes 页数：1 Pages

Dallas

Real-Time Clock

General Description The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square w

文件：361.41 Kbytes 页数：22 Pages

Maxim

美信