Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

Preview PDF HTML

DS1691 Datasheet(PDF) 1 Page - Dallas Semiconductor

Part # DS1691
Description  3 Volt/5 Volt Serialized Real Time Clock with NV RAM Control
Download  5 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1691 Datasheet(HTML) 1 Page - Dallas Semiconductor

  DS1691 Datasheet HTML 1Page - Dallas Semiconductor DS1691 Datasheet HTML 2Page - Dallas Semiconductor DS1691 Datasheet HTML 3Page - Dallas Semiconductor DS1691 Datasheet HTML 4Page - Dallas Semiconductor DS1691 Datasheet HTML 5Page - Dallas Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 1 / 5 page
background image
DS1688/DS1691
3 Volt/5 Volt Serialized Real Time Clock
with NV RAM Control
DS1688/DS1691
030598 1/5
FEATURES
Incorporates industry standard DS1287 PC clock plus
enhanced features:
• +3 or +5 volt operation
• 64–bit Silicon serial number
• 64–bit customer specific ROM or additional serial
number available
• Power control circuitry supports system power on
from date/time alarm or key closure
• Automatic battery backup and write protection to
external SRAM
• Crystal select bit allows RTC to operate with 6 pF or
12.5 pF crystal
• 114 bytes user NVRAM
• Auxiliary battery input
• RAM clear input
• Century register
• 32 KHz output for power management
• 32–bit V
CC powered elapsed time counter
• 32–bit V
BAT powered elapsed time counter
• 16–bit power cycle counter
• Compatible with existing BIOS for original DS1287
functions
• Available as chip (DS1688) or stand–alone module
with embedded battery and crystal (DS1691)
• Timekeepingalgorithmincludesleapyearcompensa-
tion valid up to 2100
ORDERING INFORMATION
PART #
DESCRIPTION
DS1688
RTC Chip, 28–pin DIP
DS1688S
RTC Chip, 28–pin SOIC
DS1691
RTC Module; 28–pin DIP
PIN ASSIGNMENT
VBAUX
X1
X2
RCLR
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
PWR
GND
CEI
CEO
VCCI
VCCO
SQW
VBAT
IRQ
PSEL
RD
GND
WR
ALE
CS
KS
VBAUX
X1
X2
RCLR
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
PWR
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
CEI
CEO
VCCI
VCCO
SQW
VBAT
IRQ
PSEL
RD
GND
WR
ALE
CS
KS
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
DS1688 28–PIN DIP
(600 MIL)
DS1688S 28–PIN SOIC
(330 MIL)
CEI
CEO
VCCI
VCCO
SQW
NC
IRQ
PSEL
RD
NC
WR
ALE
CS
KS
VBAUX
NC
NC
RCLR
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
PWR
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
DS1691 28–PIN ENCAPSU-
LATED PACKAGE (740 MIL)
PIN DESCRIPTION
X1
– Crystal Input
X2
– Crystal Output
RCLR
– RAM Clear Input
AD0-AD7
– Mux’ed Address/Data Bus
PWR
– Power–on Interrupt Output
KS
– Kickstart Input
CS
– RTC Chip Select Input
ALE
– RTC Address Strobe
WR
– RTC Write Data Strobe
RD
– RTC Read Data Strobe
VCCO
– RAM Power Supply Output


Similar Part No. - DS1691

ManufacturerPart #DatasheetDescription
logo
National Semiconductor ...		 DS1691 NSC-DS1691 Datasheet
275Kb / 10P		    (RS-422/RS-423) Line Drivers with TRI-STATE Outputs
logo
Dallas Semiconductor		 DS1691 DALLAS-DS1691 Datasheet
395Kb / 6P		    3V/5V Serialized Real-Time Clocks with NV RAM Control
logo
Maxim Integrated Produc...		 DS1691 MAXIM-DS1691 Datasheet
99Kb / 3P		    3V/5V Serialized Real-Time Clocks with NV RAM Control
REV: 112205
logo
National Semiconductor ...		 DS1691A NSC-DS1691A Datasheet
275Kb / 10P		    (RS-422/RS-423) Line Drivers with TRI-STATE Outputs
logo
Texas Instruments		 DS1691A TI1-DS1691A Datasheet
1,000Kb / 15P		 [Old version datasheet]   Line Drivers with TRI-STATE Outputs
More results

Similar Description - DS1691

ManufacturerPart #DatasheetDescription
logo
Dallas Semiconductor		 DS1689 DALLAS-DS1689 Datasheet
321Kb / 32P		    3-Volt/5-Volt Serialized Real-Time Clock with NV RAM Control
DS1688 DALLAS-DS1688_05 Datasheet
395Kb / 6P		    3V/5V Serialized Real-Time Clocks with NV RAM Control
DS14285 DALLAS-DS14285 Datasheet
303Kb / 25P		    Real Time Clock with NV RAM Control
logo
Maxim Integrated Produc...		 DS1688 MAXIM-DS1688 Datasheet
99Kb / 3P		    3V/5V Serialized Real-Time Clocks with NV RAM Control
REV: 112205
DS1689 MAXIM-DS1689 Datasheet
599Kb / 36P		    3V/5V Serialized Real-Time Clocks with NV RAM Control
REV: 112105
logo
Dallas Semiconductor		 DS1689 DALLAS-DS1689_05 Datasheet
593Kb / 36P		    3V/5V Serialized Real-Time Clocks with NV RAM Control
DS14285 DALLAS-DS14285_05 Datasheet
481Kb / 26P		    Real-Time Clock with NV RAM
logo
Maxim Integrated Produc...		 DS1558 MAXIM-DS1558 Datasheet
320Kb / 18P		    Watchdog Clock with NV RAM Control
REV: 071305
logo
Dallas Semiconductor		 DS1558 DALLAS-DS1558 Datasheet
492Kb / 18P		    Watchdog Clock with NV RAM Control
logo
RICOH electronics devic...		 RP5C01A RICOH-RP5C01A Datasheet
124Kb / 10P		    REAL-TIME CLOCK WITH INTERNAL RAM
More results


Html Pages

1 2 3 4 5


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com