參數(shù)資料
型號: M41ST84YMH
廠商: 意法半導(dǎo)體
英文描述: 5.0 or 3.0V, 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS
中文描述: 5.0或3.0V,512位64 × 8串行實時時鐘與監(jiān)督職能
文件頁數(shù): 1/31頁
文件大?。?/td> 452K
代理商: M41ST84YMH
1/31
June 2003
Rev. 4.0
M41ST84Y
M41ST84W
5.0 or 3.0V, 512 bit (64 x 8) SERIAL RTC
with SUPERVISORY FUNCTIONS
* Contact Local Sales Office
FEATURES SUMMARY
s
5.0 OR 3.0V OPERATING VOLTAGE
s
SERIAL INTERFACE SUPPORTS I2C BUS
(400 KHz)
s
OPTIMIZED FOR MINIMAL INTERCONNECT
TO MCU
s
2.5 TO 5.5V OSCILLATOR OPERATING
VOLTAGE
s
AUTOMATIC SWITCH-OVER and DESELECT
CIRCUITRY
s
CHOICE OF POWER-FAIL DESELECT
VOLTAGES:
– M41ST84Y: VCC = 4.5 to 5.5V;
4.20V
≤ VPFD ≤ 4.50V
– M41ST84W: VCC = 2.7 to 3.6V;
2.55V
≤ VPFD ≤ 2.70V
s
1.25V REFERENCE (for PFI/PFO)
s
COUNTERS FOR TENTHS/HUNDREDTHS
OF SECONDS, SECONDS, MINUTES,
HOURS, DAY, DATE, MONTH, YEAR, and
CENTURY
s
44 BYTES OF GENERAL PURPOSE RAM
s
PROGRAMMABLE ALARM and INTERRUPT
FUNCTION (VALID EVEN DURING BATTERY
BACK-UP MODE)
s
WATCHDOG TIMER
s
MICROPROCESSOR POWER-ON RESET
s
BATTERY LOW FLAG
s
ULTRA-LOW BATTERY SUPPLY CURRENT
OF 500 nA (max)
s
OPTIONAL PACKAGING INCLUDES A 28-
LEAD SOIC and SNAPHAT TOP (to be
ordered separately)
s
SNAPHAT PACKAGE PROVIDES DIRECT
CONNECTION FOR A SNAPHAT TOP,
WHICH CONTAINS THE BATTERY and
CRYSTAL
Figure 1. 16-pin SOIC Package
Figure 2. 28-pin SOIC Package*
16
1
SO16 (MQ)
28
1
SOH28 (MH)
SNAPHAT (SH)
Battery & Crystal
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