DS1230Y Maxim, DS1230Y Datasheet

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DS1230Y

Manufacturer Part Number
DS1230Y
Description
The DS1230 256k Nonvolatile (NV) SRAMs are 262,144-bit, fully static, nonvolatile SRAMs organized as 32,768 words by 8 bits
Manufacturer
Maxim
Datasheet

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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 70 ns
 Lithium energy source is electrically
 Full ±10% V
 Optional ±5% V
 Optional industrial temperature range of
 JEDEC standard 28-pin DIP package
 PowerCap Module (PCM) package
www.maxim-ic.com
19-5635; Rev 11/10
absence of external power
loss
EEPROM or Flash memory
disconnected to retain freshness until power is
applied for the first time
(DS1230AB)
-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 (DS1230Y)
CC
operating range
1 of 10
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)
256k Nonvolatile SRAM
GND
DQ0
DQ1
DQ2
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
28-Pin Encapsulated Package
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
34-Pin PowerCap Module (PCM)
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 (+5V)
- Ground
- No Connect
BAT
DS1230Y/AB
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
34
33
28
25
24
23
21
19
18
32
31
30
29
27
26
22
20
CC
NC
NC
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0

Related parts for DS1230Y

DS1230Y Summary of contents

Page 1

... Low-power CMOS  Read and write access times  Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time  Full ±10% V operating range (DS1230Y) CC  Optional ±5% V operating range CC (DS1230AB)  Optional industrial temperature range of -40° ...

Page 2

... WE DATA RETENTION MODE The DS1230AB provides full functional capability for V 4.5 volts. The DS1230Y provides full functional capability for V protects by 4.25 volts. Data is maintained in the absence of V The nonvolatile static RAMs constantly monitor V automatically write protect themselves, all inputs become “don’t care,” and all outputs become high- impedance ...

Page 3

... After a DS1230 PCM is reflow soldered, a DS9034PC PowerCap is snapped on top of the PCM to form a complete Nonvolatile SRAM module. The DS9034PC is keyed to prevent improper attachment. DS1230 PowerCap Modules and DS9034PC PowerCaps are ordered separately and shipped in separate containers. See the DS9034PC data sheet for further information DS1230Y/AB ...

Page 4

... See Note 10) A TYP MAX UNITS 5.0 5.25 V 5 ±5% for DS1230AB ±10% for DS1230Y) CC TYP MAX UNITS µA +1.0 µA +1 µA 200 600 µA 50 150 85 mA 4.62 4.75 V 4.37 4 +25° ...

Page 5

... WR1 t 15 WR2 t ODW t 5 OEW DH1 t 10 DH2 DS1230Y/ ±5% for DS1230AB ±10% for DS1230Y) CC UNITS NOTES MAX ...

Page 6

... READ CYCLE SEE NOTE 1 WRITE CYCLE 1 SEE NOTES and DS1230Y/AB ...

Page 7

... slew from Valid to and Inactive Valid to End of Write Protection CC SYMBOL MIN t Inactive PD t 150 F t 150 REC DS1230Y/ See Note 10) A TYP MAX UNITS NOTES µs 1.5 µs µ 125 ms 11 ...

Page 8

... Timing Measurement Reference Levels Input: 1.5V Output: 1.5V Input pulse Rise and Fall Times TYP MAX UNITS years is measured from the latter of low transition, the output WE high transition, the output WE low transition, CE starting from the time power DS1230Y/AB = +25°C) NOTES ...

Page 9

... OUTLINE NO. MDT28+3 21-0245 PC2+4 21-0246 DS1230Y/AB SPEED GRADE PIN-PACKAGE (ns) 28 740 EDIP 34 PowerCap* 28 740 EDIP 34 PowerCap* 28 740 EDIP 34 PowerCap* 28 740 EDIP 34 PowerCap* Note that a “+”, LAND PATTERN NO. ...

Page 10

... MIN/MAX information from the AC Electrical Characteristics 11/10 table; updated the Ordering Information table (removed -85, -100, -120, -150, and -200 parts and leaded -70 parts); removed the PowerCap module drawings and updated the Package Information table DESCRIPTION DS1230Y/AB PAGES CHANGED ...

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