STK12C68-5C25 ETC [List of Unclassifed Manufacturers], STK12C68-5C25 Datasheet

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STK12C68-5C25

Manufacturer Part Number
STK12C68-5C25
Description
Manufacturer
ETC [List of Unclassifed Manufacturers]
Datasheet
October 2003
FEATURES
• 25ns, 35ns, 45ns and 55ns Access Times
• “Hands-off” Automatic STORE with External
• STORE to Nonvolatile Elements Initiated by
• RECALL to SRAM Initiated by Software or
• 10mA Typical I
• Unlimited READ, WRITE and RECALL Cycles
• 1,000,000 STORE Cycles to Nonvolatile Ele-
• 100-Year Data Retention in Nonvolatile Ele-
• Commercial, Industrial and Military Tempera-
• 28-Pin SOIC, DIP and LCC Packages
BLOCK DIAGRAM
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
A
A
A
A
A
A
A
68 F Capacitor on Power Down
Hardware, Software or AutoStore™ on Power
Down
Power Restore
ments (Commercial/Industrial)
ments (Commercial/Industrial)
tures
7
5
6
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
4
128 x 512
A
10
RECALL
STORE
STK12C68-M SMD#5962-94599
V
8K x 8 AutoStore™ nvSRAM
CCX
CONTROL
CONTROL
RECALL
POWER
STORE/
V
CAP
1
SOFTWARE
DETECT
DESCRIPTION
The Simtek STK12C68 is a fast static
nonvolatile element incorporated in each static
memory cell. The
unlimited number of times, while independent, non-
volatile data resides in Nonvolatile Elements. Data
transfers from the
(the
on power down. A 68 F or larger capacitor tied from
V
regardless of power-down slew rate or loss of power
from “hot swapping”. Transfers from the Nonvolatile
Elements to the
place automatically on restoration of power. Initia-
tion of
ware
sequences. A hardware
the HSB pin.
CAP
Nonvolatile Static RAM
QuantumTrap™ CMOS
STORE
G
E
W
Document Control # ML0008 rev 0.4
to ground guarantees the
STORE
controlled
HSB
A
operation) can take place automatically
0
- A
and
12
SRAM
SRAM
SRAM
RECALL
PIN CONFIGURATIONS
PIN NAMES
by
STK12C68
A
DQ
E
W
G
HSB
V
V
V
(the
0
CCX
CAP
SS
STORE
- A
to the Nonvolatile Elements
0
can be read and written an
28 - LCC
-DQ
entering
12
cycles can also be soft-
RECALL
7
may be initiated with
Address Inputs
Data In/Out
Chip Enable
Write Enable
Output Enable
Hardware Store Busy (I/O)
Power (+ 5V)
Capacitor
Ground
STORE
V
DQ
DQ
DQ
V
operation) take
CAP
A
specific
A
A
A
A
A
A
A
A
SS
12
7
6
5
4
3
2
0
1
0
2
1
28 - DIP
28 - SOIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RAM
operation,
28
27
26
25
24
23
22
21
20
19
18
17
16
15
with a
read
V
A
A
A
G
A
E
DQ
DQ
DQ
DQ
DQ
W
HSB
CCX
8
9
11
10
7
6
5
4
3

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STK12C68-5C25 Summary of contents

Page 1

... STK12C68-M SMD#5962-94599 AutoStore™ nvSRAM QuantumTrap™ CMOS Nonvolatile Static RAM DESCRIPTION The Simtek STK12C68 is a fast static nonvolatile element incorporated in each static memory cell. The unlimited number of times, while independent, non- volatile data resides in Nonvolatile Elements. Data transfers from the ...

Page 2

... STK12C68 ABSOLUTE MAXIMUM RATINGS Voltage on Input Relative to Ground . . . . . . . . . . . . . –0.5V to 7.0V Voltage on Input Relative .–0. Voltage HSB . . . . . . . . . . . . . . . .–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 ...

Page 3

... AVQV t AXQX AVAV 1 t ELQV 6 t ELQX 4 t GLQV 8 t GLQX 10 t ELICCH ACTIVE 3 Document Control # ML0008 rev 0.4 STK12C68 (V = 5.0V CC STK12C68-35 STK12C68-45 STK12C68-55 MIN MAX MIN MAX MIN MAX ...

Page 4

... WLQZ HIGH IMPEDANCE AVAV 14 t ELEH 17 t AVEH 13 t WLEH 15 t DVEH HIGH IMPEDANCE 4 Document Control # ML0008 rev 0 5.0V CC STK12C68-35 STK12C68-45 STK12C68-55 MIN MAX MIN MAX MIN MAX ...

Page 5

... Output Data Output Data Output High Output Data Output Data Output Data n, o Active Output Data Output Data Output High 5.0V 10%) CC STK12C68 UNITS NOTES MIN MAX 700 300 RECOVER HIGH IMPEDANCE DATA VALID ...

Page 6

... BROWN OUT BROWN OUT NO STORE AutoStore™ NO RECALL NO RECALL (V DID NOT GO (V DID NOT BELOW V ) BELOW V RESET RESET 6 Document Control # ML0008 rev 0 5.0V 10%) CC STK12C68 UNITS MIN MAX 550 300 4.0 4 STORE BROWN OUT AutoStore™ RECALL WHEN ...

Page 7

... AVAV ADDRESS # ELEH 36 t ELAX DATA VALID 7 Document Control # ML0008 rev 0.4 STK12C68 5.0V CC STK12C68-45 STK12C68-55 UNITS NOTES MAX MIN MAX MIN MAX STORE RECALL HIGH IMPEDANCE ...

Page 8

... STK12C68 The STK12C68 has two separate modes of opera- tion: mode and nonvolatile mode. In SRAM mode, the memory operates as a standard fast static . In nonvolatile mode, data is transferred RAM from to Nonvolatile Elements (the SRAM operation) or from Nonvolatile Elements to (the operation). In this mode RECALL tions are disabled ...

Page 9

... READ WRITE operation in no way alters the data in the Nonvolatile Elements. The nonvolatile data can be recalled an unlimited number of times. AutoStore™ OPERATION The STK12C68 can be powered in one of three modes. During normal AutoStore™ STK12C68 will draw current from V capacitor connected to the V ...

Page 10

... HSB OPERATION The STK12C68 provides the HSB pin for controlling and acknowledging the operations. The HSB STORE pin is used to request a hardware When the HSB pin is driven low, the STK12C68 will conditionally initiate a operation after t STORE an actual cycle will only begin if a STORE ...

Page 11

... Cycle Time (ns) Figure 5: I (max) Reads cc October 2003 100 TTL 20 CMOS 0 200 11 Document Control # ML0008 rev 0.4 STK12C68 TTL CMOS 50 100 150 200 Cycle Time (ns) Figure 6: I (max) Writes cc ...

Page 12

... STK12C68 STK12C68 5962-94599 October 2003 ORDERING INFORMATION - Temperature Range Blank = Commercial (0 to 70° Industrial (–40 to 85° Military (–55 to 125°C) Access Time 25 = 25ns 35 = 35ns 45 = 45ns 55 = 55ns Lead Finish (Plastic only) Blank = 85%Sn/15% 100% Sn (Matte Tin) Package P = Plastic 28-pin 300 mil DIP ...

Page 13

... Summary Combined commercial, industrial and military datasheets. Removed 20 nsec device. Added 35 nsec SMD to order information Added “28 - SOIC” label to page 1 pinout drawing Added lead-free lead finish Restored “W” 600 mil DIP package to ordering information 13 Document Control # ML0008 rev 0.4 STK12C68 ...

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