Datasheet > M48T559YSH

M48T559YSH

更新时间： 2024-11-13 22:08:59

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		静态存储器双倍数据速率
页数	文件大小	规格书
18页	149K
描述
64 Kbit 8Kb x8 TIMEKEEPER SRAM with ADDRESS/DATA MULTIPLEXED

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中文翻译

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数据手册

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M48T559YSH 数据手册

M48T559Y

64 Kbit (8Kb x8) TIMEKEEPER SRAM

with ADDRESS/DATA MULTIPLEXED

■ SOFTWARE and HARDWARE RESET for

SNAPHAT (SH)

Battery/Crystal

WATCHDOG TIMER

■ REGISTER COMPATIBLE with M48T59

TIMEKEEPER SRAM

■ ADDRESS/DATA MULTIPLEXED I/O PINS

■ WATCHDOG TIMER - MONITORS OUT of

CONTROL PROCESSOR or HUNG BUS

■ ALARM with WAKE-UP in BATTERY MODE

■ INTEGRATED ULTRA LOW POWER SRAM,

REAL TIME CLOCK, POWER-FAIL CONTROL

CIRCUIT and BATTERY

SOH28 (MH)

■ FREQUENCY TEST OUTPUT for REAL TIME

CLOCK

■ AUTOMATIC POWER-FAIL CHIP DESELECT

and WRITE PROTECTION

Figure 1. Logic Diagram

■ WRITE PROTECT VOLTAGE

PFD

= Power-fail Deselect Voltage):

– M48T559Y: 4.2V ≤ V

≤ 4.5V

PFD

■ PACKAGING INCLUDES a 28-LEAD SOIC

and SNAPHAT TOP

(to be Ordered Separately)

■ SOIC PACKAGE PROVIDES DIRECT

CONNECTION for a SNAPHAT TOP

CONTAINS the BATTERY and CRYSTAL

AS0

AS1

AD0-AD7

■ MICROPROCESSOR POWER-ON RESET

RST

(Valid even during battery back-up mode)

IRQ/FT

■ PROGRAMMABLE ALARM OUTPUT ACTIVE

M48T559Y

in the BATTERY BACK-UP MODE

RSTIN1

RSTIN2

DESCRIPTION

The M48T559Y TIMEKEEPER RAM is an 8K x 8

non-volatile static RAM and real time clock. The

monolithic chip is available in the SNAPHAT pack-

age to provide a highly integrated battery backed-

up memory and real time clock solution.

WDI

The 28 pin 330mil SOIC provides sockets with

gold plated contacts at both ends for direct con-

nection to a separate SNAPHAT housing contain-

ing the battery and crystal. The unique design

allows the SNAPHAT battery package to be

mounted on top of the SOIC package after the

completion of the surface mount process.

AI01674B

February 2000

1/18

12 3 4 5 6 7...18

中文翻译

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