M41ST84YMH 판매점 - 5.0 or 3.0V / 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS

M41ST84YMH 반도체 회로 부품 판매점

5.0 or 3.0V / 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS

ST Microelectronics

M41ST84Y

M41ST84W

5.0 or 3.0V, 512 bit (64 x 8) SERIAL RTC

with SUPERVISORY FUNCTIONS

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

* Contact Local Sales Office

Figure 1. 16-pin SOIC Package

SO16 (MQ)

Figure 2. 28-pin SOIC Package*

SNAPHAT (SH)

Battery & Crystal

SOH28 (MH)

June 2003

Rev. 4.0

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M41ST84Y, M41ST84W

TABLE OF CONTENTS

SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 3. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 4. 16-pin SOIC Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 5. 28-pin SOIC Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 6. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 7. Hardware Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 2. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

DC AND AC PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 3. DC and AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 8. AC Testing Input/Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 4. Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 5. DC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 6. Crystal Electrical Characteristics (Externally Supplied) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

OPERATING MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2-Wire Bus Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 9. Serial Bus Data Transfer Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 10. Acknowledgement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 11. Bus Timing Requirements Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 7. AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

READ Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 12. Slave Address Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 13. READ Mode Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 14. Alternate READ Mode Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

WRITE Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 15. WRITE Mode Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Data Retention Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 16. Power Down/Up Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 8. Power Down/Up AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

CLOCK OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

TIMEKEEPER® Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 9. TIMEKEEPER® Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Calibrating the Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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PDF 파일 내의 페이지 : 총 31 페이지

제조업체: ST Microelectronics

( stm )

M41ST84YMH data

데이터시트 다운로드 :

[ M41ST84YMH.PDF ]

[ M41ST84YMH 다른 제조사 검색 ]

국내 전력반도체 판매점

상호 : 아이지 인터내셔날

전화번호 : 051-319-2877

[ 홈페이지 ]

IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈

( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )

전력반도체 문의 : 010-3582-2743

일반적인 전자부품 판매점

디바이스마트

IC114

엘레파츠

ICbanQ

Mouser Electronics

DigiKey Electronics

Element14

M41ST84YMH 반도체 회로 부품 판매점

5.0 or 3.0V / 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS

국내 전력반도체 판매점

일반적인 전자부품 판매점

관련 데이터시트