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DS1685-5+

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

DS1685-5+ Overview

3V/5V Real-Time Clocks

DS1685-5+ 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 Time6 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 supply5 V
Certification statusNot Qualified
Maximum seat height5.08 mm
Maximum supply voltage5.5 V
Minimum supply voltage4.5 V
Nominal supply voltage5 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
Base Number Matches1
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
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