DS17887-5+

MAXIM INTEGRATED PRODUCTS  DS17887-5+  芯片, 实时时钟

实时时钟，带 NV 存储器，Integrated

Maxim 一系列实时时钟产品包含用于数据保存的非易失 RAM 存储器。 时钟/日历功能提供秒、分钟、小时、日、日期、月和年份信息。 此时钟通常以 12 或 24 小时格式操作，带有 AM/PM 指示器。 附加功能包括监控计时器、警报和涓流充电设备（用于外部备用电池）；还提供一些设备，包括集成晶体时钟振荡器。

得捷:
IC RTC CLK/CALENDAR PAR 24EDIP

欧时:
### 实时时钟，带 NV 存储器，IntegratedMaxim 一系列实时时钟产品包含用于数据保存的非易失 RAM 存储器。 时钟/日历功能提供秒、分钟、小时、日、日期、月和年份信息。 此时钟通常以 12 或 24 小时格式操作，带有 AM/PM 指示器。 附加功能包括监控计时器、警报和涓流充电设备（用于外部备用电池）；还提供一些设备，包括集成晶体时钟振荡器。### 实时时钟 RTC

贸泽:
实时时钟 3V/5V RTC

e络盟:
报警实时时钟芯片, 时期时间格式 星期/日/月/年 时:分:秒, 多路复用, 4.5V至5.5V, EDIP-24

安富利:
The DS17285, DS17485, DS17885, DS17287, DS17487, and DS17887 real-time clocks RTCs are designed to be successors to the industry-standard DS12885 and DS12887. The DS17285, DS17485, and DS17885 hereafter referred to as the DS17x85 provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square wave, and 114 bytes of battery-backed NV SRAM. The DS17x85 also incorporates a number of enhanced functions including a silicon serial number, power-on/off control circuitry, and 2K, 4K, or 8Kbytes of battery-backed NV SRAM. The DS17287, DS17487, and DS17887 hereafter referred to as the DS17x87 integrate a quartz crystal and lithium energy source into a 24-pin encapsulated DIP package. The DS17x85 and DS17x87 power-control circuitry allows the system to be poweredon by an external stimulus such as a keyboard or by a time-and-date wake-up alarm. The active-low PWR output pin is triggered by one or either of these events, and is used to turn on an external power supply. The active-low PWR pin is under software control, so that when a task is complete, the system power can then be shut down.For all devices, the date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap years. It also operates in either 24-hour or 12-hour format with an AM/PM indicator. A precision temperature-compensated circuit monitors the status of VCC. If a primary power failure is detected, the device automatically switches to a backup supply. A lithium coin cell battery can be connected to the VBAT input pin on the DS17x85 to maintain time and date operation when primary power is absent. The DS17x85 and DS17x87 include a VBAUX input used to power auxiliary functions such as active-low PWR control. The device is accessed through a multiplexed byte-wide interface.

Chip1Stop:
Real Time Clock Multiplexed 8KByte 24-Pin EDIP

Newark:
# MAXIM INTEGRATED PRODUCTS  DS17887-5+  Alarm RTC IC, Date Time Format Day/Date/Month/Year hh:mm:ss, Multiplexed, 4.5 V to 5.5 V, EDIP-24

DeviceMart:
IC RTC CLK/CALENDAR PAR 24-EDIP