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STK14CA8

Document Number: 001-51592 Rev. **

Page 3 of 16

Absolute Maximum Ratings

Voltage on Input Relative to Ground.................–0.5V to 4.1V

Voltage on Input Relative to V

SS

...........–0.5V to (V

CC

 + 0.5V)

Voltage on DQ

0-7

 

or HSB ......................–0.5V to (V

CC

 + 0.5V)

Temperature under Bias ............................... –55

°

C to 125

°

C

Junction Temperature ................................... –55

°

C to 140

°

C

Storage Temperature .................................... –65

°

C to 150

°

C

Power Dissipation ............................................................. 1W

DC Output Current (1 output at a time, 1s duration).... 15 mA 

NF (SOP-32) PACKAGE THERMAL CHARACTERISTICS

θ

jc

 5.4 C/W; 

θ

ja

 44.3 [0fpm], 37.9 [200fpm], 35.1 C/W [500fpm].

RF (SSOP-48) PACKAGE THERMAL CHARACTERISTICS

θ

jc

 6.2 C/W; 

θ

ja

 51.1 [0fpm], 44.7 [200fpm], 41.8 C/W [500fpm].

Note:

 Stresses greater than those listed under 

Absolute

Maximum Ratings

 may cause permanent damage to the device.

This is a stress rating only, and functional operation of the device
at conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
reliability.

DC Characteristics

(V

CC

 = 2.7V to 3.6V)

Note

 The HSB pin has I

OUT

=-10 uA for V

OH

 of 2.4 V, this parameter is characterized but not tested.

Symbol

Parameter

Commercial

Industrial

Units

Notes

Min

Max

Min

Max

I

CC1

Average V

CC

 Current

65
55
50

70
60
55

mA
mA
mA

t

AVAV 

= 25 ns

t

AVAV 

= 35 ns

t

AVAV 

= 45 ns

Dependent on output loading and cycle 
rate. Values obtained without output loads.

I

CC2

Average V

CC

 Current during 

STORE

3

3

mA

All Inputs Don’t Care, V

CC

 = max

Average current for duration of STORE
cycle (t

STORE

)

I

CC3

Average V

CC 

Current at t

AVAV

 = 

200 ns
3V, 25°C, Typical

10

10

mA

 (V

CC 

– 0.2V)

All Other Inputs Cycling at CMOS Levels
Dependent on output loading and cycle 
rate. Values obtained without output loads.

I

CC4

Average V

CAP

 Current during 

AutoStore Cycle

3

3

mA

All Inputs Don’t Care
Average current for duration of STORE 
cycle (t

STORE

)

I

SB

V

CC 

Standby Current

(Standby, Stable CMOS Levels)

3

3

mA

≥ (

V

CC

 -0.2V)

All Others V

IN

≤ 

0.2V or 

 (V

CC

-0.2V)

Standby current level after nonvolatile 
cycle complete

I

ILK

Input Leakage Current

±

1

±

1

μ

A

V

CC 

= max

V

IN

 = V

SS

 to V

CC

I

OLK

Off-State Output Leakage 
Current

±

1

±

1

μ

A

V

CC 

= max

V

IN 

= V

SS

 to V

CC

, E or G

 ≥

 V

IH

 

V

IH

Input Logic “1” Voltage

2.0

V

CC

+0.3

2.0

V

CC

+0.3

V

All Inputs

V

IL

Input Logic “0” Voltage

V

SS

–0.5

0.8

V

SS

–0.5

0.8

V

All Inputs

V

OH

Output Logic “1” Voltage

2.4

2.4

V

I

OUT

 = – 2 mA

V

OL

Output Logic “0” Voltage

0.4

0.4

V

I

OUT

 = 4 mA

T

A

Operating Temperature

0

70

– 40

85

°

C

V

CC

Operating Voltage

2.7

3.6

2.7

3.6

V

3.3V + 0.3V

V

CAP

Storage Capacitance

17

120

17

120

μ

F

Between  V

CAP

 pin and V

SS

, 5V rated.

NV

C

Nonvolatile STORE operations

200

200

K

DATA

R

Data Retention

20

20

Years At 55 

°

C

[+] Feedback 

Содержание AutoStore STK14CA8

Страница 1: ...ment included with each memory cell This SRAM provides fast access and cycle times ease of use and unlimited read and write endurance of a normal SRAM Data transfers automatically to the nonvolatile s...

Страница 2: ...ddress inputs select one of 131 072 bytes in the nvSRAM array DQ7 DQ0 I O Data Bi directional 8 bit data bus for accessing the nvSRAM E Input Chip Enable The active low E input selects the device W In...

Страница 3: ...CC Current 65 55 50 70 60 55 mA mA mA tAVAV 25 ns tAVAV 35 ns tAVAV 45 ns Dependent on output loading and cycle rate Values obtained without output loads ICC2 Average VCC Current during STORE 3 3 mA A...

Страница 4: ...C f 1 0 MHz Figure 4 AC Output Loading Figure 5 AC Output Loading for Tristate Specifications tHZ tLZ tWLQZ tWHQZ tGLQX tGHQZ Symbol Parameter 2 Max Units Conditions CIN Input Capacitance 7 pF V 0 to...

Страница 5: ...put Hold after Address Change 3 3 3 ns 6 tELQX tLZ Address Change or Chip Enable to Output Active 3 3 3 ns 7 tEHQZ 5 tHZ Address Change or Chip Disable to Output Inactive 10 13 15 ns 8 tGLQX tOLZ Outp...

Страница 6: ...s 17 tAVWH tAVEH tAW Address Setup to End of Write 20 25 30 ns 18 tAVWL tAVEL tAS Address Setup to Start of Write 0 0 0 ns 19 tWHAX tEHAX tWR Address Hold after End of Write 0 0 0 ns 20 tWLQZ 5 7 tWZ...

Страница 7: ...its Notes Standard Alternate Min Max 22 tHRECALL Power up RECALL Duration 20 ms 9 23 tSTORE tHLHZ STORE Cycle Duration 12 5 ms 10 11 24 VSWITCH Low Voltage Trigger Level 2 65 V 25 VCCRISE VCC Rise Tim...

Страница 8: ...LL Initiation Cycle Time 25 35 45 ns 13 27 tAVEL tAVGL tAS Address Setup Time 0 0 0 ns 28 tELEH tGLGH tCW Clock Pulse Width 20 25 30 ns 29 tEHAX tGHAX Address Hold Time 1 1 1 ns 30 tRECALL tRECALL REC...

Страница 9: ...31 NO Symbols Parameter STK14CA8 Units Notes Standard Min Max 33 tSS Soft Sequence Processing Time 70 s 15 16 33 33 Notes 14 On a hardware STORE initiation SRAM operation continues to be enabled for...

Страница 10: ...Output Data Output Data Active 17 18 19 L H L 0x04E38 0x0B1C7 0x083E0 0x07C1F 0x0703F Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM Output Data Output Data Output Data Output Data Output Data Acti...

Страница 11: ...is enabled by default on the STK14CA8 During normal operation the device draws current from VCC to charge a capacitor connected to the VCAP pin This stored charge is used by the chip to perform a sing...

Страница 12: ...areful routing of power ground and signals reduce circuit noise Best Practices nvSRAM products have been used effectively for over 15 years While ease of use is one of the product s main system values...

Страница 13: ...rmed in a manner similar to the software STORE initi ation To initiate the AutoStore Disable sequence the following sequence of E controlled or G controlled READ operations must be performed The AutoS...

Страница 14: ...RAM SSOP48 300 35 ns Commercial STK14CA8 RF45 3V 128Kx8 AutoStore nvSRAM SSOP48 300 45 ns Commercial STK14CA8 RF25TR 3V 128Kx8 AutoStore nvSRAM SSOP48 300 25 ns Commercial STK14CA8 RF35TR 3V 128Kx8 Au...

Страница 15: ...STK14CA8 Document Number 001 51592 Rev Page 15 of 16 Package Diagrams Figure 17 32 Pin 300 mil SOIC 51 85127 Figure 18 48 Pin 300 mil SSOP 51 85061 51 85127 A 51 85061 C Feedback...

Страница 16: ...it as specified in the applicable agreement Any reproduction modification translation compilation or representation of this Source Code except as specified above is prohibited without the express writ...

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