전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

STK14CA8-R25 데이터시트(PDF) 11 Page - List of Unclassifed Manufacturers

부품명 STK14CA8-R25
상세설명  128K x 8 AutoStoreTM nvSRAM QuantumTrapTM CMOS Nonvolatile Static RAM
Download  15 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  ETC [List of Unclassifed Manufacturers]
홈페이지  
Logo ETC - List of Unclassifed Manufacturers

STK14CA8-R25 데이터시트(HTML) 11 Page - List of Unclassifed Manufacturers

Back Button STK14CA8-R25 Datasheet HTML 7Page - List of Unclassifed Manufacturers STK14CA8-R25 Datasheet HTML 8Page - List of Unclassifed Manufacturers STK14CA8-R25 Datasheet HTML 9Page - List of Unclassifed Manufacturers STK14CA8-R25 Datasheet HTML 10Page - List of Unclassifed Manufacturers STK14CA8-R25 Datasheet HTML 11Page - List of Unclassifed Manufacturers STK14CA8-R25 Datasheet HTML 12Page - List of Unclassifed Manufacturers STK14CA8-R25 Datasheet HTML 13Page - List of Unclassifed Manufacturers STK14CA8-R25 Datasheet HTML 14Page - List of Unclassifed Manufacturers STK14CA8-R25 Datasheet HTML 15Page - List of Unclassifed Manufacturers  
Zoom Inzoom in Zoom Outzoom out
 11 / 15 page
background image
STK14CA8
December 2004
Document Control #ML0022 rev 1.0
11
nvSRAM
The STK14CA8 nvSRAM is made up of two
functional components paired in the same physical
cell. These are a SRAM memory cell and a
nonvolatile QuantumTrap™ cell. The SRAM memory
cell operates as a standard fast static RAM. Data in
the SRAM can be transferred to the nonvolatile cell
(the STORE operation), or from the nonvolatile cell
to SRAM (the RECALL operation). This unique
architecture allows all cells to be stored and recalled
in parallel. During the STORE and RECALL
operations SRAM READ and WRITE operations are
inhibited. The STK14CA8 supports unlimited reads
and writes just like a typical SRAM. In addition, it
provides unlimited RECALL operations
from the
nonvolatile cells and up to 1 million STORE
operations.
SRAM READ
The STK14CA8 performs a READ cycle whenever
E
and G are low while W and HSB are high.
The address specified on pins A16-0 determines which
of the 131,072 data bytes will be accessed. When the
READ is initiated by an address transition, the
outputs will be valid after a delay of tAVQV (READ
cycle #1). If the READ is initiated by E or G , the
outputs will be valid at tELQV or at tGLQV, whichever is
later (READ cycle #2). The data outputs will
repeatedly respond to address changes within the
tAVQV access time without the need for transitions on
any control input pins, and will remain valid until
another address change or until E or G is brought
high, or W or HSB is brought low.
VCC
VCC
VCAP
W
SRAM WRITE
A WRITE cycle is performed whenever E and W
are low and HSB is high. The address inputs must be
stable prior to entering the WRITE cycle and must
remain stable until either E or W goes high at the
end of the cycle. The data on the common I/O pins
DQ0-7 will be written into the memory if it is valid tDVWH
before the end of a W controlled WRITE or tDVEH
before the end of an E controlled WRITE.
It is recommended that G be kept high during the
entire WRITE cycle to avoid data bus contention on
common I/O lines. If G is left low, internal circuitry will
turn off the output buffers tWLQZ after W goes low.
AutoStore™ OPERATION
The STK14CA8 stores data to nvSRAM using one of
three storage operations. These three operations are
Hardware Store, activated by HSB , Software Store,
actived by an address sequence, and AutoStore™, on
device power down.
AutoStore
™ operation is a unique feature of Simtek
QuantumTrap™
technology and is enabled by default
on the STK14CA8.
During normal operation, the device will draw current
from Vcc to charge a capacitor connected to the Vcap
pin. This stored charge will be used by the chip to
perform a single STORE operation. If the voltage on
the Vcc pin drops below Vswitch, the part will
automatically disconnect the Vcap pin from Vcc. A
STORE operation will be initiated with power provided
by the Vcap capacitor.
Figure 4 shows the proper connection of the storage
capacitor (Vcap) for automatic store operation. Refer
to the DC CHARACTERISTICS table for the size of
Vcap. The voltage on the Vcap pin is driven to 5V by a
charge pump internal to the chip. A pull up should be
placed on W to hold it inactive during power up.
To reduce unneeded nonvolatile stores, AutoStore™
and Hardware Store operations will be ignored unless
at least one WRITE operation has taken place since
the most recent STORE or RECALL cycle. Software
initiated STORE cycles are performed regardless of
whether a WRITE operation has taken place. The
HSB
signal can be monitored by the system to detect
an AutoStore™ cycle is in progress.
DEVICE OPERATION
Figure 4: AutoStore
TM Mode


유사한 부품 번호 - STK14CA8-R25

제조업체부품명데이터시트상세설명
logo
Simtek Corporation
STK14CA8-RF25 SIMTEK-STK14CA8-RF25 Datasheet
593Kb / 19P
   128Kx8 Autostore nvSRAM
STK14CA8-RF25 SIMTEK-STK14CA8-RF25 Datasheet
528Kb / 21P
   128Kx8 Autostore nvSRAM
logo
Cypress Semiconductor
STK14CA8-RF25 CYPRESS-STK14CA8-RF25 Datasheet
505Kb / 16P
   128Kx8 AutoStore nvSRAM
logo
Simtek Corporation
STK14CA8-RF25I SIMTEK-STK14CA8-RF25I Datasheet
593Kb / 19P
   128Kx8 Autostore nvSRAM
STK14CA8-RF25I SIMTEK-STK14CA8-RF25I Datasheet
528Kb / 21P
   128Kx8 Autostore nvSRAM
More results

유사한 설명 - STK14CA8-R25

제조업체부품명데이터시트상세설명
logo
Simtek Corporation
STK16CA8 SIMTEK-STK16CA8 Datasheet
310Kb / 12P
   128K x 8 AutoStorePlus??nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
logo
List of Unclassifed Man...
STK25CA8 ETC-STK25CA8 Datasheet
129Kb / 8P
   128K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM Module
logo
Simtek Corporation
STK10C68 SIMTEK-STK10C68 Datasheet
468Kb / 12P
   8K x 8 nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
STK20C04 SIMTEK-STK20C04 Datasheet
428Kb / 12P
   512 x 8 nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
logo
List of Unclassifed Man...
STK11C48 ETC-STK11C48 Datasheet
282Kb / 10P
   2K x 8 nvSRAM QuantumTrap CMOS Nonvolatile Static RAM
STK10C68 ETC1-STK10C68 Datasheet
332Kb / 12P
   8K X 8 nvSRAM QuantumTrap CMOS Nonvolatile Static RAM
logo
Simtek Corporation
STK10C48 SIMTEK-STK10C48 Datasheet
429Kb / 12P
   2K x 8 nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
logo
List of Unclassifed Man...
STK14D88 ETC-STK14D88 Datasheet
216Kb / 15P
   32K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM
STK11C68 ETC-STK11C68 Datasheet
58Kb / 10P
   8K x 8 nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
logo
Simtek Corporation
STK11C48 SIMTEK-STK11C48 Datasheet
368Kb / 10P
   2K x 8 nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com