DS12CR887-33+

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The DS12CR887-33+ is a highly integrated RTC that combines advanced features with an ultra-low power operation. Key features include a low-power 32kHz oscillator, an extended operating temperature range, an extended temperature range for the integrated crystal, and an integrated lithium cell interface. It is a minimal-disruption solution for adding the extended functionality of a comprehensive RTC while minimizing the system\'s power requirements.

The DS12CR887-33+ is a CMOS integrated circuit Clock/Timing - Real Time Clock (RTC) product. RTCs are primarily used to keep time-critical applications running accurately and reliably, in the event of a power failure. The DS12CR887-33+ productivity supports an extended operating temperature range and battery backup to ensure the required reliability with minimal power consumption.

Application Field

The DS12CR887-33+ is a low-power, highly integrated RTC chip suitable for a host of different time-tracking and time-related applications. Its primary application is in computers and other digital systems, where precise time measurement and data tracking are essential. It can also be used in embedded systems and other battery-powered devices, such as environmental monitoring systems and precision measurement equipment. It is suitable for use in automotive and electric vehicle applications, where its low-power operation can help reduce overall system power requirements.

Working Principle

The DS12CR887-33+ contains a crystal oscillator, an external lithium cell interface, and a CMOS integrated circuit. It uses a low power 32kHz oscillator to generate an accurate 1Hz reference signal, which is then used for timekeeping. The external lithium cell interface provides backup power to ensure reliable operation even in the event of a power failure. The integrated circuit contains a real-time clock and onboard counters to provide accurate and reliable timekeeping.

The clocks RT registers can be programmed to provide the desired frequency for counting and for engaging the 1PPS output. A power-on reset feature starts the RTC in a known state, which ensures that time is accurate and reliable when counting resumes. An alarm interrupt can be enabled to wake up the system at preset times and to generate a reset pulse. The DS12CR887-33+ supports standard time-of-day (ToD) functions, such as an adjustable start time, multiple clock periods, and an adjustable duty cycle.

In addition to the timekeeping functions, the DS12CR887-33+ provides a battery backup circuit to maintain a backup voltage supply. The battery backup circuit monitors the battery voltage and switches off the backup circuit when the battery voltage drops below the specified threshold. This feature helps to ensure that accurate and reliable operation is maintained even when the main power supply is interrupted.

The DS12CR887-33+ is also capable of providing a 1PPS output, which can be used to provide an accurate pulse on every second to initiate synchronization operations or other time-sensitive applications. It is also capable of generating time-stamp interrupts, which can be used to signal the start of a new clock period or as wakeup triggers during low-power/sleep mode operation.

The DS12CR887-33+ is a highly integrated, low-power real-time clock for applications requiring reliable time-tracking and time-related functions. Its battery backup circuit, extended temperature range, and 1PPS output make it an ideal solution for providing reliable timekeeping in cost-sensitive, power-constrained applications.

The specific data is subject to PDF, and the above content is for reference