DESCRIPTION

The M48T02,12 TIMEKEEPER? RAM is a 2K x 8 non-volatile static RAM and real time clock which is pin and functional compatible with the MK48T02,12.

■ INTEGRATED ULTRA LOW POWER SRAM,

REAL TIME CLOCK and POWER-FAIL

CONTROL CIRCUIT

■ BYTEWIDE RAM-LIKE CLOCK ACCESS

■ BCD CODED YEAR, MONTH, DAY, DATE,

HOURS, MINUTES and SECONDS

■ CLOCK ACCURACY of ± 1 MINUTE a

MONTH, @ 25°C

■ SOFTWARE CONTROLLED CLOCK

CALIBRATION for HIGH ACCURACY

APPLICATIONS

■ AUTOMATICPOWER-FAILCHIPDESELECTand

WRITE PROTECTION

■ CHOICE of TWO WRITE PROTECT

VOLTAGES:

– M48T02: 4.5V ≤ VPFD ≤ 4.75V

– M48T12: 4.2V ≤ VPFD ≤ 4.5V

■ SELF CONTAINED BATTERY and CRYSTAL

in the CAPHAT DIP PACKAGE

■ 10 YEARS of DATA RETENTION and CLOCK

OPERATION in the ABSENCE of POWER

■ PIN and FUNCTION COMPATIBLE with

JEDEC STANDARD 2K x 8 SRAMs

M48T02屬于集成電路（IC） > 實(shí)時(shí)時(shí)鐘。意法半導(dǎo)體（ST）集團(tuán)制造生產(chǎn)的M48T02實(shí)時(shí)時(shí)鐘實(shí)時(shí)時(shí)鐘 (RTC) 為幾乎所有需要保持精確時(shí)間的電子設(shè)備提供時(shí)間和/或日期信息。時(shí)鐘類型有二進(jìn)制計(jì)數(shù)器、時(shí)鐘/日歷/監(jiān)控器、歷時(shí)計(jì)時(shí)器、幻時(shí)鐘芯片、便攜式系統(tǒng)控制器、溫度記錄器、時(shí)間事件記錄器和計(jì)時(shí)器時(shí)鐘外設(shè)。其包含 2 B 至 2 MB 不等的存儲(chǔ)器，接口選項(xiàng)有 I2C、并行、串行、SPI、1 線式、2 線式、3 線式和 4 線式。