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Cypress Semiconductor Electronic Components Datasheet

CY14B256L Datasheet

256-Kbit (32K x 8) nvSRAM

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CY14B256L pdf
PRELIMINARY
CY14B256L
256-Kbit (32K x 8) nvSRAM
Features
• 25 ns, 35 ns, and 45 ns access times
• “Hands-off” automatic STORE on power down with only a
small capacitor
STORE to QuantumTrapnonvolatile elements is initiated
by software, device pin, or AutoStore™ on power down
RECALL to SRAM initiated by software or power up
• Infinite READ, WRITE, and RECALL cycles
• 10 mA typical ICC at 200 ns cycle time
• 200,000 STORE cycles to QuantumTrap
20-year data retention @ 55°C
• Single 3V operation with tolerance of +15%, –10%
• Commercial and industrial temperature
• SOIC and SSOP packages
• RoHS compliance
Logic Block Diagram
Functional Description
The Cypress CY14B256L is a fast static RAM with a nonvol-
atile element in each memory cell. The embedded nonvolatile
elements incorporate QuantumTrap technology producing the
world’s most reliable nonvolatile memory. The SRAM provides
infinite read and write cycles while independent, nonvolatile
data resides in the highly reliable QuantumTrap cell. Data
transfers from the SRAM to the nonvolatile elements (the
STORE operation) takes place automatically at power down.
On power up, data is restored to the SRAM (the RECALL
operation) from the nonvolatile memory. The STORE and
RECALL operations are also available under software control.
A5
A6
A7
A8
A9
A 11
A 12
A 13
www.DataShAee14t4U.com
QuantumTrap
512 X 512
STORE
STATIC RAM
ARRAY
512 X 512
RECALL
VCC
VCAP
POWER
CONTROL
STORE/
RECALL
CONTROL
HSB
SOFTWARE
DETECT
-A13 A0
DQ 0
DQ 1
DQ 2
DQ 3
DQ 4
DQ 5
DQ 6
DQ 7
COLUMN IO
COLUMN DEC
A0 A1 A2 A3 A4 A10
OE
CE
WE
Cypress Semiconductor Corporation
Document #: 001-06422 Rev. *E
• 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Revised January 27, 2007
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Cypress Semiconductor Electronic Components Datasheet

CY14B256L Datasheet

256-Kbit (32K x 8) nvSRAM

No Preview Available !

CY14B256L pdf
Pin Configurations
V CAP
NC
A 14
A 12
A7
A6
A5
NC
A4
NC
NC
NC
V SS
NC
NC
DQ0
A3
A2
A1
A0
DQ1
DQ2
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
PRELIMINARY
48-SSOP
Top View
(Not To Scale)
48 VCC
47 NC
46 HSB
45 WE
44 A13
43 A8
42 A9
41 NC
40 A11
39 NC
38 NC
37 NC
36 VSS
35 NC
34 NC
33 DQ6
32 OE
31 A10
30 CE
29 DQ7
28 DQ5
27 DQ4
26 DQ3
25 VCC
CY14B256L
www.DataSheet4U.com
V CAP
A 14
A 12
A7
A6
A5
A4
A3
NC
A2
A1
A0
DQ0
DQ1
DQ2
V SS
1 32
2 31
3 30
4 29
5 28
6 27
7
8 32 - Lead SOIC
9 Top View
10 (Not To Scale)
26
25
24
23
11 22
12 21
13 20
14 19
15 18
16 17
V CC
HSB
WE
A 13
A8
A9
A 11
OE
NC
A 10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
Document #: 001-06422 Rev. *E
Page 2 of 17
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Part Number CY14B256L
Description 256-Kbit (32K x 8) nvSRAM
Maker Cypress Semiconductor
Total Page 17 Pages
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