STK16C88-W35 Cypress Semiconductor Corp, STK16C88-W35 Datasheet

STK16C88-W35

Manufacturer Part Number
STK16C88-W35
Description
Manufacturer
Cypress Semiconductor Corp
Type
NVSRAMr
Datasheet

Specifications of STK16C88-W35

Word Size
8b
Organization
32Kx8
Density
256Kb
Interface Type
Parallel
Access Time (max)
35ns
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
80mA
Lead Free Status / Rohs Status
Not Compliant
FEATURES
• Transparent Data Save on Power Down
• Internal Capacitor Guarantees AutoStore™
• Nonvolatile Storage without Battery Problems
• Directly Replaces 32K x 8 Static RAM, Battery-
• 25ns, 35ns and 45ns Access Times
• STORE to EEPROM Initiated by Software or
• No Data Loss from Undershoot
• 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 over Full Industrial
• Commercial and Industrial Temperatures
• 28-Pin PDIP Package
BLOCK DIAGRAM
February 2002
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
Regardless of Power-Down Slew Rate
Backed RAM or EEPROM
AutoStorePlus™ on Power Down
Power Restore
Temperature Range
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
STATIC RAM
COLUMN I/O
A
512 x 512
1
ARRAY
A
2
A
3
EEPROM ARRAY
A
4
512 x 512
A
10
32K x 8 AutoStorePlus™ nvSRAM
RECALL
STORE
CONTROL
RECALL
STORE/
5-65
SOFTWARE
DETECT
DESCRIPTION
The STK16C88 is a fast
EEPROM
ory cell. The
unlimited number of times, while independent non-
volatile data resides in
the
take place automatically on power down. An internal
capacitor guarantees the
less of power-down slew rate. Transfers from the
EEPROM
place automatically on restoration of power. Initia-
tion of
trolled by entering control sequences on the
inputs. The STK16C88 is pin-compatible with 32k x
8
substitution while enhancing performance. The
STK14C88, which uses an external capacitor, and
the STK15C88, which uses charge stored in system
capacitance, are alternatives for systems needing
AutoStorePlus™ operation.
SRAM
Nonvolatile Static RAM
QuantumTrap™ CMOS
SRAM
CAPACITOR
CONTROL
INTERNAL
POWER
G
E
W
STORE
V
s and battery-backed
CC
element incorporated in each static mem-
to the
to the
A
0
- A
and
SRAM
EEPROM
SRAM
13
RECALL
PIN CONFIGURATIONS
DQ
DQ
PIN NAMES
DQ
V
A
A
A
A
A
A
A
A
A
A
SS
14
12
can be read and written an
7
6
5
4
3
2
0
STK16C88
1
0
1
2
EEPROM
(the
A
W
DQ
E
G
V
V
0
CC
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
(the
- A
0
STORE
SRAM
- DQ
14
cycles can also be con-
RECALL
SRAM
STORE
7
. Data transfers from
28
27
26
25
24
23
22
21
20
19
18
17
16
15
with a nonvolatile
operation regard-
G
E
DQ
DQ
DQ
DQ
DQ
V
W
A
A
A
A
A
s, allowing direct
CC
8
9
11
10
13
Address Inputs
Write Enable
Data In/Out
Chip Enable
Output Enable
Power (+ 5V)
Ground
operation) take
5
7
6
4
3
operation) can
28 - 600 PDIP
SRAM

Related parts for STK16C88-W35

STK16C88-W35 Summary of contents

Page 1

... Transfers from the EEPROM place automatically on restoration of power. Initia- tion of STORE trolled by entering control sequences on the inputs. The STK16C88 is pin-compatible with 32k x 8 SRAM substitution while enhancing performance. The STK14C88, which uses an external capacitor, and the STK15C88, which uses charge stored in system capacitance, are alternatives for systems needing AutoStorePlus™ ...

Page 2

... STK16C88 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 . . . . . . . . . . . . . . . . . . . . . – 125 C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . – 150 C Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W DC Output Current (1 output at a time, 1s duration 15mA DC CHARACTERISTICS SYMBOL PARAMETER b I Average V ...

Page 3

... STANDBY I CC February 2002 PARAMETER ; device is continuously selected AVAV 3 t AVQV 5 t AXQX DATA VALID AVAV 1 t ELQV 6 t ELQX 4 t GLQV 8 t GLQX 10 t ELICCH ACTIVE 5-67 STK16C88 (V = 5.0V CC STK16C88-25 STK16C88-35 STK16C88-45 MIN MAX MIN MAX MIN MAX EHICCL 7 t EHQZ ...

Page 4

... AVAV 14 t 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 STK16C88-35 STK16C88-45 UNITS MAX MIN MAX MIN MAX WHAX 16 t WHDX ...

Page 5

... CC BELOW V February 2002 PARAMETER . SWITCH BROWN OUT AutoStorePlus™ NO RECALL NO RECALL (V DID NOT GO DID NOT GO CC BELOW V ) RESET RESET 5-69 STK16C88 (V = 5.0V CC STK16C88 UNITS NOTES MIN MAX 550 s 500 ns 4.0 4 stg BROWN OUT AutoStorePlus™ RECALL WHEN V RETURNS CC ) ABOVE V ...

Page 6

... Note l: 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 m: While there are 15 addresses on the STK16C88, only the lower 14 are used to control software modes. SOFTWARE STORE/RECALL CYCLE NO. SYMBOLS ...

Page 7

... The AutoStorePlus™ STK16C88 is a fast 32K x 8 SRAM that does not lose its data on power-down. The data is preserved in integral QuantumTrap™ while power is unavailable. The nonvolatil- EEPROM ity of the STK16C88 does not require any system intervention or support: AutoStorePlus™ on power- ...

Page 8

... WRITE less than 100%, only standby current is drawn Valid READ when the chip is disabled. The overall average cur- Valid READ rent drawn by the STK16C88 depends on the fol- Valid READ Valid READ lowing items: 1) Valid READ duty cycle of chip enable; 3) the overall cycle rate Initiate RECALL cycle for accesses ...

Page 9

... STK16C88 February 2002 ORDERING INFORMATION - Temperature Range Access Time Package 5-73 STK16C88 Blank = Commercial (0 to 70° Industrial (–40 to 85° 25ns 35 = 35ns 45 = 45ns W = Plastic 28-pin 600 mil DIP ...

Page 10

... STK16C88 February 2002 5-74 ...

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