M48T35Y集成電路（IC）的實(shí)時時鐘規(guī)格書PDF中文資料

M48T35Y屬于集成電路（IC）的實(shí)時時鐘。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的M48T35Y實(shí)時時鐘實(shí)時時鐘 (RTC) 為幾乎所有需要保持精確時間的電子設(shè)備提供時間和/或日期信息。時鐘類型有二進(jìn)制計(jì)數(shù)器、時鐘/日歷/監(jiān)控器、歷時計(jì)時器、幻時鐘芯片、便攜式系統(tǒng)控制器、溫度記錄器、時間事件記錄器和計(jì)時器時鐘外設(shè)。其包含 2 B 至 2 MB 不等的存儲器，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。

Summary description

The M48T35/Y TIMEKEEPER? RAM is a 32Kb x 8 non-volatile static RAM and real time clock. The monolithic chip is available in two special packages to provide a highly integrated battery backed-up memory and real time clock solution. The M48T35/Y is a non-volatile pin and function equivalent to any JEDEC standard 32Kb x 8 SRAM. It also easily fits into many ROM,EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed.

The 28-pin, 600mil DIP CAPHAT houses the M48T35/Y silicon with a quartz crystal and a long life lithium button cell in a single package.

Features

■ Integrated, ultra low power SRAM, real time clock, power-fail control circuit and battery

■ BYTEWIDE? RAM-like clock access

■ BCD coded year, month, day, date, hours, minutes, and seconds

■ Frequency test output for real time clock

■ Automatic power-fail chip deselect and WRITE protection

■ WRITE protect voltages(VPFD= Power-fail Deselect Voltage):

–M48T35: VCC= 4.75 to 5.5V

–4.5V ≤VPFD ≤4.75V

–M48T35Y: VCC= 4.5 to 5.5V

–4.2V ≤ VPFD ≤ 4.5V

■ Self-contained battery and crystal in the CAPHAT? DIP package

■ SOIC package provides direct connection for a SNAPHAT? housing containing the battery and

crystal

■ SNAPHAT? housing (battery and crystal) is replaceable

■ Pin and function compatible with JEDEC standard 32 Kb x 8 SRAMs

■ RoHS compliant

– Lead-free second level interconnect