STK20C04-W25 Cypress Semiconductor Corp, STK20C04-W25 Datasheet

STK20C04-W25

Manufacturer Part Number
STK20C04-W25
Description
Manufacturer
Cypress Semiconductor Corp
Type
NVSRAMr
Datasheet

Specifications of STK20C04-W25

Word Size
8b
Organization
512x8
Density
4Kb
Interface Type
Parallel
Access Time (max)
25ns
Operating Supply Voltage (typ)
5V
Package Type
PDIP
Operating Temperature Classification
Commercial
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temp Range
0C to 70C
Pin Count
28
Mounting
Through Hole
Supply Current
85mA
Lead Free Status / Rohs Status
Compliant
BLOCK DIAGRAM
FEATURES
• 25ns, 35ns and 45ns 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 over Full Industrial
• Commercial and Industrial Temperatures
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
March 2006
A
A
A
A
Hardware
Power Restore
ments
Temperature Range
5
6
7
8
0
1
2
3
4
5
6
7
CC
at 200ns Cycle Time
A
COLUMN DEC
STATIC RAM
COLUMN I/O
0
16 x 256
A
ARRAY
1
A
2
A
3
Obsolete - Not Recommend for new Designs
Quantum Trap
A
4
16 x 256
RECALL
STORE
1
DESCRIPTION
The Simtek STK20C04 is a fast static
volatile element incorporated in each static memory
cell. The
number of times, while independent nonvolatile data
resides in nonvolatile elements. Data may easily be
transferred from the
(the
ments to the
NE pin. Transfers from the Nonvolatile Elements to the
SRAM
matically on restoration of power. The STK20C04
combines the high performance and ease of use of a
fast
The STK20C04 features industry-standard pinout for
nonvolatile
Nonvolatile Static RAM
SRAM
QuantumTrap™ CMOS
STORE
Document Control # ML0001 rev 0.2
(the
CONTROL
RECALL
STORE/
SRAM
with nonvolatile data integrity.
RAM
RECALL
operation), or from the Nonvolatile Ele-
SRAM
G
NE
E
W
s in a 28-pin 600 mil plastic
can be read and written an unlimited
512 x 8 nvSRAM
(the
SRAM
operation) also take place auto-
PIN CONFIGURATIONS
PIN NAMES
DQ
DQ
DQ
V
NC
NE
A
A
A
A
A
A
A
A
SS
2
STK20C04
7
6
5
4
3
1
0
0
2
1
A
W
DQ
E
G
NE
V
V
RECALL
0
CC
SS
- A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
0
to the Nonvolatile Elements
- DQ
8
7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
operation), using the
DQ
DQ
V
A
NC
NC
G
NC
E
DQ
DQ
DQ
W
NC
Address Inputs
Write Enable
Data In/Out
Chip Enable
Output Enable
Nonvolatile Enable
Power (+ 5V)
Ground
CC
8
RAM
7
6
5
4
3
28 - 600 PDIP
with a non-
DIP
.

Related parts for STK20C04-W25

STK20C04-W25 Summary of contents

Page 1

... March 2006 QuantumTrap™ CMOS Nonvolatile Static RAM Obsolete - Not Recommend for new Designs DESCRIPTION The Simtek STK20C04 is a fast static volatile element incorporated in each static memory cell. The number of times, while independent nonvolatile data resides in nonvolatile elements. Data may easily be ...

Page 2

... STK20C04 ABSOLUTE MAXIMUM RATINGS Voltage on Input Relative to Ground . . . . . . . . . . . . . .–0.5V to 7.0V Voltage on Input Relative –0. Voltage –0. 0-7 Temperature under Bias . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W DC Output Current (1 output at a time, 1s duration 15mA DC CHARACTERISTICS ...

Page 3

... NE ≥ device is continuously selected AVAV 3 t AVQV 5 t AXQX AVAV 1 t ELQV 6 t ELQX 4 t GLQV 8 t GLQX 10 t ELICCH ACTIVE 3 Document Control # ML0001 rev 0.2 STK20C04 ± 5.0V CC STK20C04-25 STK20C04-35 STK20C04-45 MIN MAX MIN MAX MIN MAX DATA VALID 11 t ...

Page 4

... AVWH 13 t WLWH 15 t DVWH DATA VALID 20 t WLQZ HIGH IMPEDANCE AVAV 14 t ELEH 17 t AVEH 13 t WLEH 15 t DVEH DATA VALID HIGH IMPEDANCE 4 Document Control # ML0001 rev 0.2 ± 5.0V 10%) CC STK20C04-35 STK20C04-45 UNITS MAX MIN MAX MIN MAX ...

Page 5

... STORE Cycle Time STORE Initiation Cycle Time Output Disable Set- Fall Output Disable Set- Fall NE Set-up Chip Enable Set-up Write Enable Set- NLWL WLNH NLEL ELNH 5 Document Control # ML0001 rev 0.2 STK20C04 MODE POWER Standby Active Active k Active Active . RESTORE (V = 5.0V CC MIN MAX ...

Page 6

... BROWN OUT STORE INHIBIT STORE INHIBIT NO RECALL NO RECALL DID NOT GO (V DID NOT BELOW V ) BELOW V RESET RESET 6 Document Control # ML0001 rev 0 5.0V + 10%) CC STK20C04 UNITS NOTES MIN MAX μs 550 10 ms 4.0 4.5 V 3.6 V BROWN OUT STORE INHIBIT RECALL WHEN V RETURNS CC ) ...

Page 7

... Power-up RECALL Duration NLNH 36 t GLNL 39 t NLQZ NLEL 36 GLEL WHEL ELNHR NLGL 34 t GLNH 37 t WHGL 38 ELGL 7 Document Control # ML0001 rev 0.2 STK20C04 ± 5.0V 10%) CC MIN MAX UNITS 550 33 t NLQX HIGH IMPEDANCE 33 t ELQXR 33 t GLQXR μ μs ...

Page 8

... STK20C04 March 2006 8 Document Control # ML0001 rev 0.2 ...

Page 9

... Nonvolatile Elements or from Nonvolatile SRAM Elements to SRAM. NOISE CONSIDERATIONS Note that the STK20C04 is a high-speed memory and so must have a high-frequency bypass capaci- tor of approximately 0.1μF connected between V and V , using leads and traces that are as short as SS possible ...

Page 10

... The overall average cur- (or STORE rent drawn by the STK20C04 depends on the fol- lowing items: 1) duty cycle of chip enable; 3) the overall cycle rate s are STORE for accesses; 4) the ratio of the operating temperature ...

Page 11

... STK20C04 March 2006 ORDERING INFORMATION - Temperature Range Access Time Lead Finish Package 11 Document Control # ML0001 rev 0.2 STK20C04 Blank = Commercial (0 to 70° Industrial (–40 to 85° 25ns 35 = 35ns 45 = 45ns Blank = 85%Sn/15% 100% Sn (Matte Tin Plastic 28-pin 600 mil DIP ...

Page 12

Document Revision History Date Revision December 2002 0.0 September 2003 0.1 February 2006 0.2 Summary Replaced 30 nsec device with 25 nsec device. Added lead-free lead finish Marked as Obsolete, Not recommended for new design. ...

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