STK11C88-N35 Cypress Semiconductor Corp, STK11C88-N35 Datasheet

STK11C88-N35

Manufacturer Part Number
STK11C88-N35
Description
Manufacturer
Cypress Semiconductor Corp
Type
NVSRAMr
Datasheet

Specifications of STK11C88-N35

Word Size
8b
Organization
32Kx8
Density
256Kb
Interface Type
Parallel
Access Time (max)
35ns
Operating Supply Voltage (typ)
5V
Package Type
SOIC
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
Surface Mount
Supply Current
80mA
Lead Free Status / RoHS Status
Not Compliant
FEATURES
• 20ns, 25ns, 35ns and 45ns Access Times
• STORE to EEPROM Initiated by Software
• RECALL to SRAM Initiated by Software or
• 10mA Typical I
• Unlimited READ, WRITE and RECALL Cycles
• 1,000,000 STORE Cycles to EEPROM
• 100-Year Data Retention in EEPROM
• Commercial and Industrial Temperatures
• 28-Pin PDIP and SOIC Packages
BLOCK DIAGRAM
July 1999
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
Power Restore
A
A
A
A
A
A
A
A
A
5
6
7
8
9
11
12
13
14
0
1
2
3
4
5
6
7
CC
at 200ns Cycle Time
A
0
COLUMN DEC
COLUMN I/O
STATIC RAM
A
512 x 512
1
ARRAY
A
2
A
3
EEPROM ARRAY
A
4
512 x 512
A
10
RECALL
STORE
CONTROL
RECALL
STORE/
5-1
SOFTWARE
DESCRIPTION
The Simtek STK11C88 is a fast static
nonvolatile, electrically erasable
incorporated in each static memory cell. The
can be read and written an unlimited number of
times, while independent nonvolatile data resides in
EEPROM
EEPROM
SRAM
software sequence. Transfers from the
the
automatically on restoration of power.
The STK11C88 is pin-compatible with industry-
standard
DETECT
Nonvolatile Static RAM
QuantumTrap™ CMOS
SRAM
G
E
W
(the
. Data transfers from the
(the
SRAM
(the
RECALL
A
0
STORE
- A
s.
32K x 8 nvSRAM
RECALL
13
operation), take place using a
PIN CONFIGURATIONS
PIN NAMES
operation), or from
DQ
DQ
DQ
V
STK11C88
A
A
A
A
A
A
A
A
A
A
SS
A
W
DQ
E
G
V
V
14
12
7
6
5
4
3
2
0
1
0
1
2
0
CC
SS
operation) also take place
- A
0
- DQ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
14
7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Address Inputs
Write Enable
Data In/Out
Chip Enable
Output Enable
Power (+5V)
Ground
PROM
G
E
DQ
DQ
DQ
DQ
DQ
V
W
A
A
A
A
A
CC
8
9
11
10
13
SRAM
5
7
6
4
3
RAM
EEPROM
EEPROM
28 - 300 PDIP
28 - 600 PDIP
28 - 300 SOIC
28 - 350 SOIC
element
to the
with a
SRAM
to
to

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STK11C88-N35 Summary of contents

Page 1

... July 1999 QuantumTrap™ CMOS Nonvolatile Static RAM DESCRIPTION The Simtek STK11C88 is a fast static nonvolatile, electrically erasable incorporated in each static memory cell. The can be read and written an unlimited number of times, while independent nonvolatile data resides in EEPROM EEPROM (the SRAM software sequence. Transfers from the ...

Page 2

... Output Logic “1” Voltage OH V Output Logic “0” Voltage OL T Operating Temperature A Note b: The STK11C88-20 requires V = 5.0V 5% supply to operate at specified speed. CC Note c: I and I are dependent on output loading and cycle rate. The specified values are obtained with outputs unloaded ...

Page 3

... AVAV 3 t AVQV 5 t AXQX AVAV 1 t ELQV 6 t ELQX 4 t GLQV 8 t GLQX 10 t ELICCH ACTIVE 5-3 STK11C88 (V = 5.0V + 10%) CC STK11C88-25 STK11C88-35 STK11C88-45 MIN MAX MIN MAX MIN MAX DATA VALID EHICCL 7 t EHQZ 9 t GHQZ DATA VALID ...

Page 4

... ELWH 17 t 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 5 5.0V + 10%) CC STK11C88-35 STK11C88-45 MAX MIN MAX MIN MAX WHAX 16 t WHDX 21 t WHQX ...

Page 5

... July 1999 PARAMETER . SWITCH BROWN OUT BROWN OUT STORE INHIBIT NO RECALL NO RECALL DID NOT GO (V DID NOT BELOW V RESET RESET 5-5 STK11C88 (V = 5.0V + 10%) CC STK11C88 UNITS NOTES MIN MAX 550 4.0 4.5 V 3.9 V BROWN OUT STORE INHIBIT RECALL WHEN V RETURNS CC ) ABOVE V SWITCH b ...

Page 6

... Note m: The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle. Note n: While there are 15 addresses on the STK11C88, only the lower 14 are used to control software modes. SOFTWARE STORE/RECALL CYCLE NO. ...

Page 7

... The STK11C88 is a versatile memory chip that pro- vides several modes of operation. The STK11C88 can operate as a standard 32K x 8 32K x 8 shadow to which the EEPROM mation can be copied or from which the be updated in nonvolatile mode. NOISE CONSIDERATIONS Note that the STK11C88 is a high-speed memory and so must have a high-frequency bypass capaci- tor of approximately 0 ...

Page 8

... WRITE less than 100%, only standby current is drawn when the chip is disabled. The overall average cur- rent drawn by the STK11C88 depends on the fol lowing items: 1) duty cycle of chip enable; 3) the overall cycle rate for accesses; 4) the ratio of level ...

Page 9

... STK11C88 July 1999 ORDERING INFORMATION - Temperature Range Access Time Package 5-9 STK11C88 Blank = Commercial (0 to 70° Industrial (–40 to 85° 20ns (Commercial only 25ns 35 = 35ns 45 = 45ns W = Plastic 28-pin 600 mil DIP P = Plastic 28-pin 300 mil DIP S = Plastic 28-pin 350 mil SOIC ...

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