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DS1251Y-70

Description
Timer or RTC, Non-Volatile, CMOS, PDIP32,
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size271KB,22 Pages
ManufacturerDALLAS
Websitehttp://www.dalsemi.com
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DS1251Y-70 Overview

Timer or RTC, Non-Volatile, CMOS, PDIP32,

DS1251Y-70 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerDALLAS
Reach Compliance Codeunknown
Information access methodsPARALLEL
interrupt capabilityN
JESD-30 codeR-PDIP-T32
JESD-609 codee0
Number of terminals32
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP32,.6
Package shapeRECTANGULAR
Package formIN-LINE
power supply5 V
Certification statusNot Qualified
Nominal supply voltage5 V
surface mountNO
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
shortest time1/100 SECOND
VolatileNO
DS1251/DS1251P
4096k NV SRAM with Phantom Clock
www.maxim-ic.com
FEATURES
§
§
§
§
§
§
§
§
§
§
Real-time clock keeps track of hundredths of
seconds, minutes, hours, days, date of the
month, months, and years
512k x 8 NV SRAM directly replaces
volatile static RAM or EEPROM
Embedded lithium energy cell maintains
calendar operation and retains RAM data
Watch function is transparent to RAM
operation
Month and year determine the number of
days in each month; valid up to 2100
Over 10 years of data retention in the
absence of power
Full 10% operating range
Lithium energy source is electrically
disconnected to retain freshness until power
is applied for the first time
DIP Module only
– Standard 32–pin JEDEC pinout
– Upward comparable with the DS1248
PowerCap
®
Module Board only
– Surface mountable package for direct
connection to PowerCap containing
battery and crystal
– Replaceable battery (PowerCap)
– Pin for pin compatible with other densities
of DS124XP Phantom Clocks
PIN ASSIGNMENT
A18/RST
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
2
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
A17
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
32-Pin Encapsulated Package
740-mil Flush
RST
A15
A16
NC
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
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
A18
A17
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
X1
GND V
BAT
X2
34-Pin PowerCap Module Board
(Uses DS9034PCX PowerCap)
1 of 22
072401

DS1251Y-70 Related Products

DS1251Y-70 DS1251W-120 DS1251WP-150 DS1251W-150 DS1251YP-100 DS1251YP-70
Description Timer or RTC, Non-Volatile, CMOS, PDIP32, Timer or RTC, Non-Volatile, CMOS, PDIP32, Timer or RTC, Non-Volatile, CMOS, Timer or RTC, Non-Volatile, CMOS, PDIP32, Timer or RTC, Non-Volatile, CMOS, Timer or RTC, Non-Volatile, CMOS,
Maker DALLAS DALLAS DALLAS DALLAS DALLAS DALLAS
Reach Compliance Code unknown unknown unknown unknown unknown unknown
Information access methods PARALLEL PARALLEL PARALLEL PARALLEL PARALLEL PARALLEL
interrupt capability N N N N N N
Number of terminals 32 32 34 32 34 34
Maximum operating temperature 70 °C 70 °C 70 °C 70 °C 70 °C 70 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
Encapsulate equivalent code DIP32,.6 DIP32,.6 MODULE,34LEAD,1.0 DIP32,.6 MODULE,34LEAD,1.0 MODULE,34LEAD,1.0
Package form IN-LINE IN-LINE MICROELECTRONIC ASSEMBLY IN-LINE MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY
power supply 5 V 3.3 V 3.3 V 3.3 V 5 V 5 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Nominal supply voltage 5 V 3.3 V 3.3 V 3.3 V 5 V 5 V
technology CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
shortest time 1/100 SECOND 1/100 SECOND 1/100 SECOND 1/100 SECOND 1/100 SECOND 1/100 SECOND
Volatile NO NO NO NO NO NO
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