EEWORLDEEWORLDEEWORLD

Part Number

Search

DS1685-3+

Description
3V/5V Real-Time Clocks
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size387KB,34 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

DS1685-3+ Overview

3V/5V Real-Time Clocks

DS1685-3+ Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeDIP
package instructionDIP, DIP24,.6
Contacts24
Reach Compliance Codecompli
ECCN codeEAR99
Factory Lead Time7 weeks
maximum clock frequency0.032 MHz
External data bus width8
Information access methodsPARALLEL, MUXED BUS
interrupt capabilityY
JESD-30 codeR-PDIP-T24
JESD-609 codee3
length31.75 mm
Humidity sensitivity level1
Number of terminals24
Number of timers1
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP24,.6
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)260
power supply3 V
Certification statusNot Qualified
Maximum seat height5.08 mm
Maximum supply voltage3.7 V
Minimum supply voltage2.7 V
Nominal supply voltage3 V
surface mountNO
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
shortest timeSECONDS
Maximum time at peak reflow temperature30
VolatileYES
width15.24 mm
uPs/uCs/peripheral integrated circuit typeTIMER, REAL TIME CLOCK
19-5215; Rev 4/10
DS1685/DS1687
3V/5V Real-Time Clocks
www.maxim-ic.com
FEATURES
Incorporates Industry-Standard DS1287 PC Clock
plus Enhanced Features Such as: Y2K Compliant
+3V or +5V Operation
64-Bit Silicon Serial Number
Power-Control Circuitry Supports System
Power-On from Date/Time Alarm or Key
Closure
32kHz Output for Power Management
Crystal-Select Bit Allows RTC to Operate with
6pF or 12.5pF Crystal
SMI Recovery Stack
242 Bytes Battery-Backed NV RAM
Auxiliary Battery Input
RAM Clear Input
Century Register
Date Alarm Register
Compatible with Existing BIOS for Original
DS1287 Functions
Available as Chip (DS1685) or Stand-Alone
Encapsulated DIP (EDIP) with Embedded
Battery and Crystal (DS1687)
Timekeeping Algorithm Includes Leap-Year
Compensation Valid Through 2099
Underwriters Laboratory (UL) Recognized
APPLICATIONS
Embedded Systems
Utility Meters
Security Systems
Network Hubs, Bridges, and Routers
PIN CONFIGURATIONS
TOP VIEW
PWR
X1
X2
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
GND
1
2
24
23
V
CC
X2
X1
PWR
N.C.
V
CC
SQW
PWR
1
2
3
4
5
6
7
8
9
10
11
12
24
V
CC
SQW
V
BAUX
RCLR
N.C.
IRQ
KS
RD
N.C.
WR
ALE
CS
DS1685/
3
DS1685S/
22
4
DS1685E
21
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
V
BAUX
RCLR
V
BAT
IRQ
KS
RD
GND
WR
ALE
CS
AD0
AD1
AD2
AD3
AD4
AD5
N.C.
5
6
7
8
9
V
BAUX
SQW
N.C.
N.C.
RCLR
V
BAT
IRQ
KS
RD
GND
WR
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
GND
DS1687
23
22
21
20
19
18
17
16
15
14
13
4
3
2
1
28
27
26
25
24
23
22
21
20
19
DS1685Q
10
11
12
13 14
15 16
17
18
PDIP (0.600)/
SO (0.300)/
TSSOP (0.173)
AD6
N.C.
AD7
GND
CS
ALE
N.C.
PLCC
EDIP (0.740)
1 of 34
Question about 2440 interrupt rate?
2440 has a 250KBPS communication device, which generates about 2272 interrupts per second. If the interrupt pin is connected to EINT17, 2440 cannot respond in WINCE and often loses interrupts. If the ...
howard_lewes Embedded System
[ESP32-Audio-Kit Audio Development Board Review] Let’s get the board moving first
[i=s]This post was last edited by jinglixixi on 2021-9-25 10:25[/i]The recent evaluation encountered two tough nuts to crack. It's not that the board is difficult to use, but I encountered setbacks in...
jinglixixi RF/Wirelessly
What do you think about the 2017 National Power Supply Undergraduate Competition?
I think it will be DC-AC. I heard it is also related to Internet+. Will it use Bluetooth transmission or something like that?...
RenderRay Electronics Design Contest
LCD screen white screen
I recently adjusted the LCD display, but I still don't know much about it. Does anyone know the reasons for a white screen? I know there may be many. Can you tell me what the common ones are? Also, wh...
sunl Embedded System
[Award Ceremony] "See how a veteran TI engineer tamed a precision amplifier" review event! (The express delivery number has been updated!)
[font=楷体_GB2312][size=5][color=#ff0000]Event details: "[/color][/size][/font][url=https://bbs.eeworld.com.cn/TI/20130807/][font=楷体_GB2312][size=5][color=#006699]See how a veteran TI engineer tamed the...
EEWORLD社区 Analogue and Mixed Signal
USB interface chip CY7C68013 (6)
[b]CY7C68013A EEPROM Burning[/b][align=left][color=rgb(51, 51, 51)][font=Arial, Helvetica, sans-serif, 脣脦脤莽][size=12px]After the firmware is debugged, it can be converted into an IIC file and burned i...
chenzhufly FPGA/CPLD

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1856  2657  2680  893  1596  38  54  18  33  37 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号