Maxim DS1670E

便携系统控制器警报器，闰年，监视计时器

Overview

The DS1670E portable system controller is a circuit that incorporates many of the functions necessary for low-power portable products integrated into one chip. The device provides a real-time clock (RTC), NV RAM controller, microprocessor monitor, and a 3-channel, 8-bit analog-to-digital converter (ADC). Communication with the DS1670E is established through a simple 3-wire interface. The RTC provides seconds, minutes, hours, day, date, month, and year information with leap year compensation. The RTC also provides an alarm interrupt. This interrupt works when the DS1670E is powered by the system power supply or when in battery-backup operation, so the alarm can be used to wake up a system that is powered down. Automatic backup and write protection of an external SRAM is provided through the VCCO, active-low CEOL, and active-low CEOH pins. The backup energy source used to power the RTC is also used to retain RAM data in the absence of VCC through the VCCO pin. The chip-enable outputs to RAM (active-low CEOL and active-low CEOH) are controlled during power transients to prevent data corruption.

Features

Tube Package
20-TSSOP (0.173, 4.40mm Width) package
20 terminations
20 pin count
Be maintained at 3.3V for high efficiency.
1 outputs

Surface Mount Mounting Type

Applications

There are a lot of Maxim Integrated
DS1670E+ Real Time Clocks applications.

• Copy machines
• Mobile equipment
• Battery powered devices
• Printers and copiers
• Electronic metering
• Digital cameras
• White goods
• Elapsed time counter
• Network powered devices
• Battery backed up systems