V3020 Datasheet PDF - EM Microelectronic Ultra Low Power 1-Bit 32-kHz RTC Specs

V3020 - Ultra Low Power 1-Bit 32-kHz RTC

Datasheet Summary

Description

The V3020 is a low power CMOS real time clock.

Data is transmitted serially as 4 address bits and 8 data bits, over one line of a standard parallel data bus.

Features

Supply current typically 390 nA at 3V 50 ns access time with 50 pF load capacitance Fully operational from 1.2V to 5.5V No busy states or danger of a clock update while accessing Serial communication on one line of a standard parallel data bus or over a conventional 3 wire serial interface Interface compatible with both Intel and Motorola Seconds, minutes, hours, day of month, month, year, week day and week number in BCD format Leap year and week number correction Time set lock.

Datasheet Details

Part number	V3020
Manufacturer	EM Microelectronic
File Size	705.88 KB
Description	Ultra Low Power 1-Bit 32-kHz RTC
Datasheet	V3020 Datasheet
Additional preview pages of the V3020 datasheet.

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Full PDF Text Transcription

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R EM MICROELECTRONIC - MARIN SA V3020 Ultra Low Power 1-Bit 32 kHz RTC Description The V3020 is a low power CMOS real time clock. Data is transmitted serially as 4 address bits and 8 data bits, over one line of a standard parallel data bus. The device is accessed by chip select ( CS ) with read and write control timing provided by either RD and WR pulse (Intel CPU) or DS with advanced R/ W (Motorola CPU). Data can also be transmitted over a conventional 3 wire serial interface having CLK, data I/O and strobe. The V3020 has no busy states and there is no danger of a clock update while accessing. Supply current is typically 390 nA at VDD = 3.0V. Battery operation is supported by complete functionality down to 1.2V. The oscillator is typically 0.3 ppm/V.

Published: Oct 7, 2025 |