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부품번호 | M48T86 기능 |
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기능 | 5V PC REAL TIME CLOCK | ||
제조업체 | ST Microelectronics | ||
로고 | |||
전체 30 페이지수
M48T86
5.0 V PC real-time clock
Not For New Design
Features
■ Drop-in replacement for PC computer
clock/calendar
■ Counts seconds, minutes, hours, days, day of
)the week, date, month, and year with leap year
t(scompensation
c■ Clock accuracy better than ±1 minute per
umonth
rod )■ Interfaced with software as 128 RAM locations:
P t(s– 14 bytes of clock and control registers
te c– 114 bytes of general purpose RAM
le u■ Selectable bus timing (Intel/Motorola)
so rod■ Three interrupts are separately software-
maskable and testable
b P– Time-of-day alarm (once/second to
- O teonce/day)
) le– Periodic rates from 122 µs to 500 ms
t(s so– End-of-clock update cycle
c b■ Programmable square wave output
du - O■ 10 years of data retention and clock operation
ro )in the absence of power
P t(s■ Self-contained battery and crystal in the
te cCAPHAT™ DIP package
le u■ Packaging includes a 28-lead SOIC and
so rodSNAPHAT® top (to be ordered separately)
■ SOIC package provides direct connection for a
b PSNAPHAT top contains the battery and crystal
O te■ Pin and function compatible with bq3285/7A
leand DS12887
so■ RoHS compliant
Ob– Lead-free second level interconnect
24
1
PCDIP24 (PC)
Battery/Crystal
CAPHAT
SNAPHAT (SH)
Battery/Crystal
28
1
SOH28 (MH)
December 2008
Rev 7
This is information on a product still in production but not recommended for new designs.
1/36
www.st.com
1
List of tables
List of tables
M48T86
Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2. AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 3. Time, calendar, and alarm formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 4. Square wave frequency/periodic interrupt rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 5. Register A MSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 6. Register B MSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 7. Register C MSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 8. Register D MSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 9.
Table 10.
)Table 11.
t(sTable 12.
cTable 13.
uTable 14.
dTable 15.
ro )Table 16.
te P ct(sTable 17.
le duTable 18.
bso ProTable 19.
- O teTable 20.
OObbssoolleettee PPrroodduucctt((ss)) - ObsoleTable 21.
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Power down/up mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Power down/up trip points DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PCDIP24 – 24-pin plastic DIP, battery CAPHAT™, package mechanical data . . . . . . . . . 29
SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT®, package
mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
SH – 4-pin SNAPHAT® housing for 48 mAh battery and crystal, package
mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
SH – 4-pin SNAPHAT® housing for 120 mAh battery and crystal, package
mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
SNAPHAT® battery table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4/36
4페이지 M48T86
Description
Table 1. Signal names
AD0-AD7
Multiplexed address/data bus
E Chip enable input
R/W WRITE enable input
DS Data strobe input
AS Address strobe input
RST
Reset Input
RCL
RAM clear input
MOT
)SQW
t(sIRQ
ducVCC
Pro t(s)VSS
NC
Bus type select input
Square wave output
Interrupt request output
(open drain)
Supply voltage
Ground
Not connected internally
lete ducFigure 2. 24-pin DIP connections
bso ProMOT 1
- O teNC 2
24 VCC
23 SQW
) leNC 3
22 NC
t(s oAD0 4
21 RCL
sAD1 5
20 NC
c bAD2 6
19 IRQ
u OM48T86
AD3 7
18 RST
rod -AD4 8
17 DS
P t(s)AD5 9
16 NC
AD6 10
15 R/W
te c AD7 11
14 AS
le du VSS 12
13 E
OObbssoolete Pro AI01641
7/36
7페이지 | |||
구 성 | 총 30 페이지수 | ||
다운로드 | [ M48T86.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
M48T86 | 5V PC REAL TIME CLOCK | ST Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |