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EM3022 - Very Low Power 8-Bit 32 kHz RTC Module

Datasheet Summary

Description

The V3022 is a low power CMOS real time clock with a built in crystal.

Standby current is typically 1.2 µA and the access time is 50 ns.

The interface is 8 bits with multiplexed address and data bus.

Features

  •  Built-in crystal with digital trimming and temperature compensation facilities  50 ns access time with 50 pF load capacitance  Standby on power down typically 1.2 µA  Wide voltage range, 2.0V to 5.5V  Universal interface compatible with both Intel and Motorola  Simple 8 bit interface with no delays or busy flags  Power fail input disables during power up / down of reset  Bus can be in tri-state in power fail mode  12 or 24 hour data formats  Time to 1/100 of a second  Leap year corre.

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Datasheet preview – EM3022

Datasheet Details

Part number EM3022
Manufacturer EM Microelectronic
File Size 944.30 KB
Description Very Low Power 8-Bit 32 kHz RTC Module
Datasheet download datasheet EM3022 Datasheet
Additional preview pages of the EM3022 datasheet.

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Full PDF Text Transcription

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EM MICROELECTRONIC - MARIN SA EM3022 Very Low Power 8-Bit 32 kHz RTC Module with Digital Trimming and High Level Integration Description The V3022 is a low power CMOS real time clock with a built in crystal. Standby current is typically 1.2 µA and the access time is 50 ns. The interface is 8 bits with multiplexed address and data bus. Multiplexing of address and data is handled by the input line A /D. There are no busy flags in the V3022, internal time update cycles are invisible to the user's software. Time data can be read from the V3022 in 12 or 24 hour data formats. An external signal puts the V3022 in standby mode. Even in standby, the V3022 pulls the IRQ pin active low on an internal alarm interrupt. Calendar functions include leap year correction and week number calculation.
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