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DS2415数据手册封面

DS2415 Datasheet

  • DS2415

  • 1-WireTM Time Chip

  • 343.31KB

  • Dallas

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DS1385/DS1387
DS1385/DS1387
RAMified Real Time Clock 4K x 8
FEATURES
PIN ASSIGNMENT
OER
X1
X2
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
SQW
AS0
AS1
V
BAT
IRQ
WER
RD
GND
WR
ALE
CS
OER
NC
NC
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
SQW
AS0
AS1
NC
IRQ
WER
RD
NC
WR
ALE
CS
鈥?/div>
Upgraded
IBM AT computer clock/calendar with
4K x 8 extended RAM
the absence of power
鈥?/div>
Totally nonvolatile with over 10 years of operation in
鈥?/div>
Counts seconds, minutes, hours,
day of the week,
date, month and year with leap year compensation
alarm
鈥?/div>
Binary or BCD representations of time, calendar and
鈥?/div>
12鈥?/div>
or 24鈥揾our clock with AM and PM in 12鈥揾our
mode
鈥?/div>
Daylight Savings Time option
鈥?/div>
Multiplex bus for pin efficiency
鈥?/div>
Interfaced with
software as 64 user RAM locations
plus 4K x 8 of static RAM
鈥?14鈥揵ytes of clock and control registers
鈥?50鈥揵ytes of general purpose RAM
鈥?4K x 8 SRAM accessible by using separate con-
trol pins
DS1385 24鈥揚IN DIP
(600 MIL)
DS1387 24鈥揚IN
ENCAPSULATED PACKAGE
(740 MIL FLUSH)
OER
X1
X2
NC
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
NC
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
SQW
NC
AS0
AS1
V
BAT
IRQ
WER
RD
BGND
WR
ALE
CS
NC
鈥?/div>
Programmable square wave output signal
鈥?/div>
Bus鈥揷ompatible interrupt signals (IRQ)
鈥?/div>
Three interrupts
and testable:
鈥?Time鈥搊f鈥揹ay alarm once/second to once/day
鈥?Periodic rates from 122
碌s
to 500 ms
鈥?End鈥搊f鈥揷lock update cycle
are separately software鈥搈askable
鈥?/div>
Available
as chip (DS1385 or DS1385S) or stand
alone module with embedded lithium battery and
crystal (DS1387)
DS1385S 28鈥揚IN SOIC
(330 MIL)
ORDERING INFORMATION
DS1385
DS1385S
DS1387
RTC Chip; 24鈥損in DIP
RTC Chip; 28鈥損in SOIC
RTC Module; 24鈥損in DIP
ECopyright
1995 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to
Dallas Semiconductor data books.
012496 1/20

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