DS1230W Maxim, DS1230W Datasheet

no-image

DS1230W

Manufacturer Part Number
DS1230W
Description
The DS1230W 3
Manufacturer
Maxim
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS1230W-100
Manufacturer:
Maxim Integrated
Quantity:
180
Part Number:
DS1230W-100+
Manufacturer:
Maxim Integrated
Quantity:
395
Part Number:
DS1230W-100IND
Manufacturer:
Maxim Integrated
Quantity:
165
Part Number:
DS1230W-100IND+
Manufacturer:
Maxim Integrated
Quantity:
398
Part Number:
DS1230W-150
Manufacturer:
DALLAS
Quantity:
3 749
Part Number:
DS1230W-150
Manufacturer:
Maxim Integrated
Quantity:
458
FEATURES
 10 years minimum data retention in the
 Data is automatically protected during power
 Replaces 32k x 8 volatile static RAM,
 Unlimited write cycles
 Low-power CMOS
 Read and write access times of 100ns
 Lithium energy source is electrically
 Optional industrial temperature range of
 JEDEC standard 28-pin DIP package
 PowerCap Module (PCM) package
www.maxim-ic.com
19-5636; Rev 11/10
absence of external power
loss
EEPROM or Flash memory
disconnected to retain freshness until power is
applied for the first time
-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
1 of 10
3.3V 256k Nonvolatile SRAM
PIN ASSIGNMENT
PIN DESCRIPTION
A0 - A14
DQ0 - DQ7
V
GND
NC
CE
WE
OE
GND
CC
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
V
WE
NC
NC
NC
NC
OE
CE
CC
(Uses DS9034PC+ or DS9034PCI+ PowerCap)
GND
DQ0
DQ1
DQ2
A12
A14
A7
A6
A5
A4
A3
A2
A1
A0
34-Pin PowerCap Module (PCM)
28-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
GND V
- Address Inputs
- Data In/Data Out
- Chip Enable
- Write Enable
- Output Enable
- Power (+3.3V)
- Ground
- No Connect
BAT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DS1230W
V
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 DS1230W

DS1230W Summary of contents

Page 1

... PowerCap Module (PCM) (Uses DS9034PC+ or DS9034PCI+ PowerCap) PIN DESCRIPTION A0 - A14 - Address Inputs DQ0 - DQ7 - Data In/Data Out - Chip Enable CE - Write Enable WE - Output Enable Power (+3.3V) CC GND - Ground Connect DS1230W A13 A11 OE 22 A10 DQ7 ...

Page 2

... V the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. DIP-package DS1230W devices can be used in place of existing 32k x 8 static RAMs directly conforming to the popular bytewide 28-pin DIP standard. The DIP devices also match the pinout of 28256 EEPROMs, allowing direct substitution while enhancing performance ...

Page 3

... PACKAGES The DS1230W is available in two packages: 28-pin DIP and 34-pin PowerCap Module (PCM). The 28- 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 pinout. The 34-pin PowerCap Module integrates SRAM memory and nonvolatile control into a module base along with contacts for connection to the lithium battery in the DS9034PC PowerCap ...

Page 4

... See Note 10) A TYP MAX UNITS 3 3.3V ±0.3V) : See Note 10 TYP MAX UNITS µA +1.0 µA +1 µA 50 250 µA 30 150 50 mA 2.9 3.0 V DS1230W 0°C to +70°C +260°C +260°C NOTES NOTES ...

Page 5

... 100 WR1 t 20 WR2 t ODW t 5 OEW DH1 t 20 DH2 DS1230W (T = +25°C) A MAX UNITS NOTES 3.3V ±0.3V) CC UNITS NOTES MAX ns 100 100 ...

Page 6

... READ CYCLE SEE NOTE 1 WRITE CYCLE 1 SEE NOTES AND DS1230W ...

Page 7

... WRITE CYCLE 2 SEE NOTES AND 13 POWER-DOWN/POWER-UP CONDITION DS1230W ...

Page 8

... WE WE the output buffers remain in a high-impedance state during this period. 9. Each DS1230W has a built-in switch that disconnects the lithium source until V the user. The expected t DR time power is first applied by the user. ...

Page 9

... Input pulse Rise and Fall Times: 5ns SUPPLY TOLERANCE 3.3V ± 0.3V 3.3V ± 0.3V 3.3V ± 0.3V 3.3V ± 0.3V OUTLINE NO. MDT28+3 21-0245 PC2+4 21-0246 DS1230W SPEED GRADE PIN-PACKAGE (ns) 28 740 EDIP 100 34 PowerCap* 100 28 740 EDIP 100 34 PowerCap* 100 Note that a “+”, LAND PATTERN NO. ...

Page 10

... Absolute Maximum Ratings section; removed the -150 MIN/MAX information from the AC Electrical 11/10 Characteristics table; updated the Ordering Information table (removed -150 parts and leaded -100 parts); removed the PowerCap module drawings and updated the Package Information table DESCRIPTION DS1230W PAGES CHANGED ...

Related keywords