參數(shù)資料
型號(hào): M48T129V-85PM1
廠商: STMICROELECTRONICS
元件分類(lèi): 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 0 TIMER(S), REAL TIME CLOCK, PDIP32
封裝: PLASTIC, MODULE, DIP-32
文件頁(yè)數(shù): 1/30頁(yè)
文件大小: 524K
代理商: M48T129V-85PM1
1/30
February 2005
M48T129Y
M48T129V
5.0 or 3.3V, 1 Mbit (128 Kbit x 8) TIMEKEEPER SRAM
FEATURES SUMMARY
INTEGRATED, ULTRA LOW POWER SRAM,
REAL TIME CLOCK, POWER-FAIL
CONTROL CIRCUIT, BATTERY, AND
CRYSTAL
YEAR 2000 COMPLIANT
BCD CODED CENTURY, YEAR, MONTH,
DAY, DATE, HOURS, MINUTES, AND
SECONDS
BATTERY LOW WARNING FLAG
AUTOMATIC POWER-FAIL CHIP
DESELECT AND WRITE PROTECTION
TWO WRITE PROTECT VOLTAGES:
(VPFD = Power-fail Deselect Voltage)
M48T129Y: VCC = 4.5 to 5.5V
4.2V
≤ VPFD ≤ 4.5V
M48T129V: VCC = 3.0 to 3.6V
2.7V
≤ VPFD ≤ 3.0V
CONVENTIONAL SRAM OPERATION;
UNLIMITED WRITE CYCLES
SOFTWARE CONTROLLED CLOCK
CALIBRATION FOR HIGH ACCURACY
APPLICATIONS
10 YEARS OF DATA RETENTION AND
CLOCK OPERATION IN THE ABSENCE OF
POWER
SELF CONTAINED BATTERY AND
CRYSTAL IN DIP PACKAGE
MICROPROCESSOR POWER-ON RESET
(Valid even during battery back-up mode)
PROGRAMMABLE ALARM OUTPUT
ACTIVE IN BATTERY BACK-UP MODE
SOIC PACKAGE PROVIDES DIRECT
CONNECTION FOR A SNAPHAT TOP
WHICH CONTAINS THE BATTERY AND
CRYSTAL
SNAPHAT HOUSING (BATTERY/CRYSTAL)
IS REPLACEABLE
EQUIVALENT SURFACE-MOUNT (SMT)
SOLUTION REQUIRES A 44-PIN M48T201Y/
V AND A STAND-ALONE 128K x8 LPSRAM
(SNAPHAT Top to be ordered separately)
Figure 1. 32-pin Module
PMDIP32 (PM)
Module
32
1
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