DS1250W Datasheet PDF - Dallas Semiconducotr
| Part Number | DS1250W | |
| Description | 3.3V 4096k Nonvolatile SRAM | |
| Manufacturers | Dallas Semiconducotr | |
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DS1250W
3.3V 4096k Nonvolatile SRAM
FEATURES
PIN ASSIGNMENT
10 years minimum data retention in the
absence of external power
Data is automatically protected during power
loss
Replaces 512k x 8 volatile static RAM,
EEPROM or Flash memory
Unlimited write cycles
Low-power CMOS
Read and write access times as fast as 150 ns
A18 1
A16 2
A14 3
A12 4
A7 5
A6 6
A5 7
A4 8
A3 9
A2 10
A1 11
32 VCC
31 A15
30 A17
29 WE
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
Lithium energy source is electrically
A0 12
21 DQ7
disconnected to retain freshness until power is
DQ0 13
20 DQ6
applied for the first time
Optional industrial temperature range of
-40°C to +85°C, designated IND
JEDEC standard 32-pin DIP package
New PowerCap Module (PCM) package
DQ1
DQ2
GND
14
15
16
19 DQ5
18 DQ4
17 DQ3
32-Pin ENCAPSULATED PACKAGE
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740-mil EXTENDED
- Directly surface-mountable module
- Replaceable snap-on PowerCap provides
lithium backup battery
- Standardized pinout for all nonvolatile
SRAM products
- Detachment feature on PCM allows easy
removal using a regular screwdriver
NC 1
A15 2
A16 3
NC 4
VCC 5
WE 6
OE 7
CE 8
DQ7
9
DQ6
10
DQ5
11
DQ4
12
DQ3
DQ2
13
14
GND VBAT
DQ1
15
DQ0
16
GND
17
34 A18
33 A17
32 A14
31 A13
30 A12
29 A11
28 A10
27 A9
26 A8
25 A7
24 A6
23 A5
22 A4
21 A3
20 A2
19 A1
18 A0
34-PIN POWERCAP MODULE (PCM)
(USES DS9034PC POWERCAP)
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PIN DESCRIPTION
A0 - A18
- Address Inputs
DQ0 - DQ7
- Data In/Data Out
CE - Chip Enable
WE - Write Enable
OE - Output Enable
VCC
GND
- Power (+3.3V)
- Ground
NC - No Connect
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WRITE CYCLE 1
DS1250W
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SEE NOTES 2, 3, 4, 6, 7, 8, AND 12
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for DS1250W electronic component. |
| Information | Total 11 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ DS1250W.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| DS1250AB | The function is 4096k Nonvolatile SRAM. Dallas Semiconducotr | |
| DS1250BL | The function is 4096K Nonvolatile SRAM. Dallas Semiconducotr | |
| DS1250W | The function is 3.3V 4096k Nonvolatile SRAM. Dallas Semiconducotr | |
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