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

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\n·周期可设置在122;

Real-Time Clock

文件：83.37 Kbytes Page：2 Pages

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

Real-Time Clocks

文件：268.46 Kbytes Page：22 Pages

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

Real-Time Clocks

文件：268.46 Kbytes Page：22 Pages

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

Real Time Clock

DESCRIPTION The DS12C887 Real Time Clock plus RAM is designed as a direct upgrade replacement for the DS12887 in existing IBM compatible personal computers to add hardware year 2000 compliance. A century byte was added to memory location 50, 32h, as called out by the PC AT specification. A lithiu

Real Time Clock

DESCRIPTION The DS12C887 Real Time Clock plus RAM is designed as a direct upgrade replacement for the DS12887 in existing IBM compatible personal computers to add hardware year 2000 compliance. A century byte was added to memory location 50, 32h, as called out by the PC AT specification. A lithiu