STK10C68K55M Cypress Semiconductor Corp, STK10C68K55M Datasheet

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STK10C68K55M

Manufacturer Part Number
STK10C68K55M
Description
Manufacturer
Cypress Semiconductor Corp
Type
NVSRAMr
Datasheet

Specifications of STK10C68K55M

Word Size
8b
Organization
8Kx8
Density
64Kb
Interface Type
Parallel
Access Time (max)
55ns
Operating Supply Voltage (typ)
5V
Package Type
CDIP
Operating Temperature Classification
Military
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temp Range
-55C to 125C
Pin Count
28
Mounting
Through Hole
Supply Current
55mA
Lead Free Status / RoHS Status
Not Compliant
BLOCK DIAGRAM
FEATURES
• 25ns, 35ns, 45ns and 55ns Access Times
• STORE to Nonvolatile Elements Initiated by
• RECALL to SRAM Initiated by Hardware or
• Automatic STORE Timing
• 10mA Typical I
• Unlimited READ, WRITE and RECALL Cycles
• 1,000,000 STORE Cycles to Nonvolatile Ele-
• 100-Year Data Retention (Industrial/Commer-
• Commercial, Industrial and Military Tempera-
• 28-Pin DIP, SOIC and LCC Packages
March 2006
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
A
A
A
A
A
A
A
Hardware
Power Restore
ments (Industrial/Commercial)
cial)
tures
5
6
7
8
9
11
12
0
1
2
3
4
5
6
7
CC
at 200ns Cycle Time
A
0
COLUMN DEC
COLUMN I/O
STATIC RAM
A
128 x 512
1
ARRAY
A
2
A
3
QUANTUM TRAP
A
Obsolete - Not Recommend for new Designs
4
128 x 512
A
10
RECALL
STORE
STK10C68-M SMD#5962-93056
1
DESCRIPTION
The Simtek STK10C68 is a fast static
atile element incorporated in each static memory cell. The
SRAM
times, while independent nonvolatile data resides in
volatile Elements
the
ation
(the
from the Nonvolatile Elements to the
RECALL
restoration of power.
performance and ease of use of a fast
atile data integrity.
The STK10C68 features industry-standard pinout for non-
volatile
ing (
SRAM
Nonvolatile Static RAM
SMD
), or from the
QuantumTrap™ CMOS
RECALL
Document Control # ML0006 rev 0.2
can be read and written an unlimited number of
RAM
CONTROL
RECALL
STORE/
operation) also take place automatically on
#5962-93056) devices are available.
to the
s. MIL-STD-883 and Standard Military Draw-
operation), using the NE pin.
G
NE
E
W
Nonvolatile Elements
. Data may easily be transferred from
Nonvolatile Elements
8K x 8 nvSRAM
The STK10C68 combines the high
PIN CONFIGURATIONS
PIN NAMES
STK10C68
A
W
DQ
E
G
NE
V
V
0
CC
SS
- A
0
28 - LCC
- DQ
12
7
RAM
SRAM
Address Inputs
Write Enable
Data In/Out
Chip Enable
Output Enable
Nonvolatile Enable
Power (+ 5V)
Ground
(the
DQ
DQ
DQ
V
A
NE
A
A
A
A
A
A
A
A
SS
12
7
6
5
4
3
2
0
with a nonvol-
1
0
2
1
to the
STORE oper-
SRAM
with nonvol-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 - DIP
28 - SOIC
Transfers
SRAM
Non-
28
27
26
25
24
23
22
21
20
19
18
17
16
15
(the
V
A
A
A
G
A
E
DQ
DQ
DQ
DQ
DQ
W
NC
CC
8
9
11
10
6
5
7
4
3

Related parts for STK10C68K55M

STK10C68K55M Summary of contents

Page 1

FEATURES • 25ns, 35ns, 45ns and 55ns Access Times • STORE to Nonvolatile Elements Initiated by Hardware • RECALL to SRAM Initiated by Hardware or Power Restore • Automatic STORE Timing • 10mA Typical I at 200ns Cycle Time CC ...

Page 2

STK10C68 ABSOLUTE MAXIMUM RATINGS Voltage on Input Relative to Ground . . . . . . . . . . . . . .–0.5V to 7.0V Voltage on Input Relative ...

Page 3

SRAM READ CYCLES #1 & #2 SYMBOLS NO. #1, #2 Alt Chip Enable Access Time ELQV ACS Read Cycle Time AVAV Address Access Time AVQV ...

Page 4

STK10C68 SRAM WRITE CYCLES #1 & #2 SYMBOLS NO Alt Write Cycle Time AVAV AVAV Write Pulse Width WLWH WLEH Chip Enable to End ...

Page 5

STORE INHIBIT/POWER-UP RECALL SYMBOLS NO. Standard 22 t Power-up RECALL Duration RESTORE 23 t STORE Cycle Duration STORE 24 V Low Voltage Trigger Level SWITCH 25 V Low Voltage Reset Level RESET Note k: t starts from the time V ...

Page 6

STK10C68 MODE SELECTION Note l: An automatic RECALL takes place at power up, starting when V ...

Page 7

RECALL CYCLES #1, #2 & #3 SYMBOLS NO NLQX ELQXR GLQXR NLNH ELNHR GLNH NLEL NLGL GLNL GLEL ...

Page 8

STK10C68 The STK10C68 has two modes of operation: mode and nonvolatile mode, determined by the state of the NE pin. When in SRAM ory operates as a standard fast static nonvolatile mode, data is transferred in parallel from to Nonvolatile ...

Page 9

If the STK10C68 WRITE power-up , the data will be corrupted. RECALL SRAM To help avoid this situation, a 10K Ohm resistor should be connected either between W and system V or between E and system V ...

Page 10

STK10C68 STK10C68 - 5962-93056 March 2006 ORDERING INFORMATION Temperature Range Blank = Commercial (0 to 70° Industrial (–40 to 85° Military (–55 to 125°C) Access Time 25 = ...

Page 11

Document Revision History Date Revision December 2002 0.0 September 2003 0.1 March 2006 0.2 March 2006 Summary Combined commercial, industrial and military data sheets. Removed 20 nsec device. Added lead-free lead finish Marked as Obsolete, Not recommended for new design. ...

Page 12

STK10C68 March 2006 12 Document Control # ML0006 rev 0.2 ...

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