M48T248Y集成電路（IC）的實(shí)時(shí)時(shí)鐘規(guī)格書(shū)PDF中文資料

M48T248Y屬于集成電路（IC）的實(shí)時(shí)時(shí)鐘。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的M48T248Y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(lèi)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(xiàn)式、2 線(xiàn)式、3 線(xiàn)式和 4 線(xiàn)式。

SUMMARY DESCRIPTION

The M48T248Y/V TIMEKEEPER? RAM is a 128Kbit x 8 non-volatile static RAM and real time clock organized as 131,072 words by 8 bits.

FEATURES SUMMARY

■ 5.0V OR 3.3V OPERATING VOLTAGE

■ REAL TIME CLOCK KEEPS TRACK OF

TENTHS/HUNDREDTHS OF SECONDS,

SECONDS, MINUTES, HOURS, DAYS,

DATE OF THE MONTH, MONTHS, AND

YEARS

■ AUTOMATIC LEAP YEAR CORRECTION

VALID UP TO THE YEAR 2100

■ AUTOMATIC SWITCH-OVER AND

DESELECT CIRCUITRY

■ CHOICE OF POWER-FAIL DESELECT

VOLTAGES:

(VPFD = Power-fail Deselect Voltage):

– M48T248Y: 4.25V ≤ VPFD ≤ 4.50V

– M48T248V: 2.80V ≤ VPFD ≤ 2.97V

■ FULL 10 VCC OPERATING RANGE

■ OVER 10 YEARS’ DATA RETENTION IN

THE ABSENCE OF POWER

■ WATCH FUNCTION IS TRANSPARENT TO

RAM OPERATION

■ 128K x 8 NV SRAM DIRECTLY REPLACES

VOLATILE STATIC RAM OR EEPROM