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DS1746W-120IND

Description
Real Time Clock
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size189KB,16 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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DS1746W-120IND Overview

Real Time Clock

DS1746W-120IND Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeDIP
package instructionEDIP-32
Contacts32
Reach Compliance Codenot_compliant
ECCN codeEAR99
Is SamacsysN
maximum clock frequency0.032 MHz
External data bus width8
Information access methodsPARALLEL, DIRECT ADDRESS
interrupt capabilityN
JESD-30 codeR-XDIP-P32
JESD-609 codee0
length38.675 mm
Humidity sensitivity level1
Number of terminals32
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialUNSPECIFIED
encapsulated codeDIP
Encapsulate equivalent codeDIP32,.6
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)240
power supply3.3 V
Certification statusNot Qualified
Maximum seat height9.27 mm
Maximum supply voltage3.63 V
Minimum supply voltage2.97 V
Nominal supply voltage3.3 V
surface mountNO
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formPIN/PEG
Terminal pitch2.54 mm
Terminal locationDUAL
shortest timeSECONDS
Maximum time at peak reflow temperatureNOT SPECIFIED
VolatileNO
width15.24 mm
uPs/uCs/peripheral integrated circuit typeTIMER, REAL TIME CLOCK
Base Number Matches1
DS1746/DS1746P
Y2K-Compliant, Nonvolatile Timekeeping RAMs
FEATURES
Integrated NV SRAM, Real-Time Clock,
Crystal, Power-Fail Control Circuit, and
Lithium Energy Source
Clock Registers are Accessed Identically to
the Static RAM. These Registers are Resident
in the Eight Top RAM Locations.
Century Byte Register (i.e., Y2K Compliant)
Totally Nonvolatile with Over 10 Years of
Operation in the Absence of Power
BCD-Coded Century, Year, Month, Date,
Day, Hours, Minutes, and Seconds with
Automatic Leap Year Compensation Valid
Up to the Year 2100
Battery Voltage-Level Indicator Flag
Power-Fail Write Protection Allows for ±10%
V
CC
Power Supply Tolerance
Lithium Energy Source is Electrically
Disconnected to Retain Freshness Until
Power is Applied for the First Time
DIP Module Only
Standard JEDEC Byte-Wide 128k x 8 Static
RAM Pinout
PowerCap Module Board Only
Surface Mountable Package for Direct
Connection to PowerCap Containing
Battery and Crystal
Replaceable Battery (PowerCap)
Power-On Reset Output
Pin-for-Pin Compatible with Other Densities
of DS174xP Timekeeping RAM
Also Available in Industrial Temperature
Range: -40°C to +85°C
Underwriters Laboratories (UL) Recognized
PIN CONFIGURATIONS
TOP VIEW
N.C.
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
Maxim
2
DS1746
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
CC
A15
N.C.
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
Encapsulated DIP
N.C.
A15
A16
RST
V
CC
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Maxim
DS1746P
X1
GND
V
BAT
X2
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
N.C.
N.C.
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
PowerCap Module Board
(Uses DS9034PCX+ or DS9034I-PCX+ PowerCap)
1 of 16
19-5503; Rev 6/13

DS1746W-120IND Related Products

DS1746W-120IND DS1746-70IND DS1746WP-120 DS1746WP-120IND
Description Real Time Clock Real Time Clock Real Time Clock Timekeeping NV RAM Real Time Clock Timekeeping NV RAM
Is it Rohs certified? incompatible incompatible - incompatible
Maker Maxim Maxim - Maxim
Parts packaging code DIP DIP - DMA
package instruction EDIP-32 EDIP-32 - POWERCAP, MODULE-34
Contacts 32 32 - 34
Reach Compliance Code not_compliant not_compliant - not_compliant
ECCN code EAR99 EAR99 - EAR99
maximum clock frequency 0.032 MHz 0.032 MHz - 0.032 MHz
External data bus width 8 8 - 8
Information access methods PARALLEL, DIRECT ADDRESS PARALLEL, DIRECT ADDRESS - PARALLEL, DIRECT ADDRESS
interrupt capability N N - N
JESD-30 code R-XDIP-P32 R-XDIP-P32 - R-XDMA-U34
JESD-609 code e0 e0 - e0
Humidity sensitivity level 1 1 - 1
Number of terminals 32 32 - 34
Maximum operating temperature 85 °C 85 °C - 85 °C
Minimum operating temperature -40 °C -40 °C - -40 °C
Package body material UNSPECIFIED UNSPECIFIED - UNSPECIFIED
Encapsulate equivalent code DIP32,.6 DIP32,.6 - MODULE,34LEAD,1.0
Package shape RECTANGULAR RECTANGULAR - RECTANGULAR
Package form IN-LINE IN-LINE - MICROELECTRONIC ASSEMBLY
Peak Reflow Temperature (Celsius) 240 240 - 240
power supply 3.3 V 5 V - 3.3 V
Certification status Not Qualified Not Qualified - Not Qualified
Maximum supply voltage 3.63 V 5.5 V - 3.63 V
Minimum supply voltage 2.97 V 4.5 V - 2.97 V
Nominal supply voltage 3.3 V 5 V - 3.3 V
surface mount NO NO - YES
technology CMOS CMOS - CMOS
Temperature level INDUSTRIAL INDUSTRIAL - INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) - TIN LEAD
Terminal form PIN/PEG PIN/PEG - J INVERTED
Terminal location DUAL DUAL - DUAL
shortest time SECONDS SECONDS - SECONDS
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED - NOT SPECIFIED
Volatile NO NO - NO
uPs/uCs/peripheral integrated circuit type TIMER, REAL TIME CLOCK TIMER, REAL TIME CLOCK - TIMER, REAL TIME CLOCK
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