DS1245AB Maxim, DS1245AB Datasheet

no-image

DS1245AB

Manufacturer Part Number
DS1245AB
Description
The DS1245 1024k Nonvolatile (NV) SRAMs are 1,048,576-bit, fully static, nonvolatile SRAMs organized as 131,072 words by 8 bits
Manufacturer
Maxim
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS1245AB-070
Manufacturer:
DALLAS
Quantity:
30
Part Number:
DS1245AB-085
Manufacturer:
DALLAS
Quantity:
103
Part Number:
DS1245AB-100
Manufacturer:
DALLAS
Quantity:
262
Part Number:
DS1245AB-100
Manufacturer:
FSC
Quantity:
64
Part Number:
DS1245AB-100
Manufacturer:
Maxim Integrated
Quantity:
508
Part Number:
DS1245AB-100+
Manufacturer:
Maxim Integrated
Quantity:
381
Part Number:
DS1245AB-120
Manufacturer:
DALLAS
Quantity:
2 075
Part Number:
DS1245AB-120
Manufacturer:
Maxim Integrated
Quantity:
499
Part Number:
DS1245AB-120+
Manufacturer:
DALLAS
Quantity:
52
Part Number:
DS1245AB-120+
Manufacturer:
Maxim Integrated
Quantity:
1 701
Part Number:
DS1245AB-120IND
Manufacturer:
Maxim Integrated
Quantity:
304
FEATURES
 10 years minimum data retention in the
 Data is automatically protected during power
 Replaces 128k x 8 volatile static RAM,
 Unlimited write cycles
 Low-power CMOS
 Read and write access times of 70 ns
 Lithium energy source is electrically
 Full ±10% V
 Optional ±5% V
 Optional industrial temperature range of
 JEDEC standard 32-pin DIP package
 PowerCap Module (PCM) package
19-5638; Rev 11/10
www.maxim-ic.com
absence of external power
loss
EEPROM or Flash memory
disconnected to retain freshness until power is
applied for the first time
(DS1245AB)
-40°C to +85°C, designated IND
-
-
-
-
Directly surface-mountable module
Replaceable snap-on PowerCap provides
lithium backup battery
Standardized pinout for all nonvolatile
SRAM products
Detachment feature on PowerCap allows
easy removal using a regular screwdriver
CC
operating range (DS1245Y)
CC
operating range
1 of 10
PIN ASSIGNMENT
PIN DESCRIPTION
A0 - A16
DQ0 - DQ7
V
GND
NC
CE
WE
OE
GND
CC
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
A15
A16
V
WE
NC
NC
OE
CE
CC
(Uses DS9034PC+ or DS9034PCI+ PowerCap)
1024k Nonvolatile SRAM
GND
DQ0
DQ1
DQ2
34-Pin PowerCap Module (PCM)
A16
A14
A12
NC
A7
A6
A5
A4
A3
A2
A1
A0
32-Pin Encapsulated Package
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
740-mil Extended
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
GND V
- Address Inputs
- Data In/Data Out
- Chip Enable
- Write Enable
- Output Enable
- Power (+5V)
- Ground
- No Connect
BAT
DS1245Y/AB
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
A15
NC
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
CC
NC
NC
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0

Related parts for DS1245AB

DS1245AB Summary of contents

Page 1

... Full ±10% V operating range (DS1245Y) CC  Optional ±5% V operating range CC (DS1245AB)  Optional industrial temperature range of -40°C to +85°C, designated IND  JEDEC standard 32-pin DIP package  PowerCap Module (PCM) package - Directly surface-mountable module ...

Page 2

... Should the supply voltage decay, the NV SRAMs CC to RAM and disconnects the lithium energy source. CC exceeds 4.75 volts for the DS1245AB and 4.5 volts for the CC is first applied at a level greater than 4.25 volts, the lithium energy source DS1245Y/AB (Chip Enable) ...

Page 3

PACKAGES The DS1245 devices are available in two packages: 32-pin DIP and 34-pin PowerCap Module (PCM). The 32-pin DIP integrates a lithium battery, an SRAM memory and a nonvolatile control function into a single package with a JEDEC-standard 600-mil DIP ...

Page 4

... See Note 10) A TYP MAX UNITS NOTES 5.0 5.25 V 5 ±5% for DS1245AB ±10% for DS1245Y) CC TYP MAX UNITS NOTES µA +1.0 µA +1 µA 200 600 µA 50 150 ...

Page 5

... Output Hold from Address Change Write Cycle Time Write Pulse Width Address Setup Time Write Recovery Time Output High Z from WE Output Active from WE Data Setup Time Data Hold Time = 5V ±5% for DS1245AB ±10% for DS1245Y See Note 10 DS1245AB-70 DS1245Y-70 SYMBOL ...

Page 6

READ CYCLE SEE NOTE 1 WRITE CYCLE 1 SEE NOTES and DS1245Y/AB ...

Page 7

WRITE CYCLE 2 SEE NOTES and 13 POWER-DOWN/POWER-UP CONDITION DS1245Y/AB ...

Page 8

POWER-DOWN/POWER-UP TIMING PARAMETER V Fail Detect to and slew from slew from Valid to and Inactive Valid to End of ...

Page 9

... All voltages are referenced to ground ORDERING INFORMATION PART TEMP RANGE DS1245AB-70+ 0°C to +70°C DS1245ABP-70+ 0°C to +70°C DS1245AB-70IND+ -40°C to +85°C DS1245ABP-70IND+ -40°C to +85°C DS1245Y-70+ 0°C to +70°C DS1245YP-70+ 0°C to +70°C DS1245Y-70IND+ -40°C to +85°C DS1245YP-70IND+ -40°C to +85°C +Denotes a lead(Pb)-free/RoHS-compliant package ...

Page 10

... Added Package Information table; removed the DIP module package 121907 drawing and dimension table Updated the storage information, soldering temperature, and lead temperature information in the Absolute Maximum Ratings section; removed the -85, -100, and -120 MIN/MAX information from the AC 11/10 Electrical Characteristics table; updated the Ordering Information table (removed -85, -100, and -120 parts and leaded -70 parts) ...

Related keywords