Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

STK14C88-3RF35I Folha de dados(PDF) 9 Page - List of Unclassifed Manufacturers

Nome de Peças STK14C88-3RF35I
Descrição Electrónicos  32K x 8 AutoStore??nvSRAM QuantumTrap CMOS Nonvolatile StaticRAM
Download  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  ETC [List of Unclassifed Manufacturers]
Página de início  
Logo ETC - List of Unclassifed Manufacturers

STK14C88-3RF35I Folha de dados(HTML) 9 Page - List of Unclassifed Manufacturers

Back Button STK14C88-3RF35I Datasheet HTML 5Page - List of Unclassifed Manufacturers STK14C88-3RF35I Datasheet HTML 6Page - List of Unclassifed Manufacturers STK14C88-3RF35I Datasheet HTML 7Page - List of Unclassifed Manufacturers STK14C88-3RF35I Datasheet HTML 8Page - List of Unclassifed Manufacturers STK14C88-3RF35I Datasheet HTML 9Page - List of Unclassifed Manufacturers STK14C88-3RF35I Datasheet HTML 10Page - List of Unclassifed Manufacturers STK14C88-3RF35I Datasheet HTML 11Page - List of Unclassifed Manufacturers STK14C88-3RF35I Datasheet HTML 12Page - List of Unclassifed Manufacturers STK14C88-3RF35I Datasheet HTML 13Page - List of Unclassifed Manufacturers  
Zoom Inzoom in Zoom Outzoom out
 9 / 13 page
background image
STK14C88-3
November 2003
9
Document Control # ML0015 rev 0.3
SOFTWARE NONVOLATILE RECALL
A software RECALL cycle is initiated with a sequence
of READ operations in a manner similar to the soft-
ware STORE initiation. To initiate the RECALL cycle,
the following sequence of E controlled READ opera-
tions must be performed:
1. Read address
0E38 (hex)
Valid READ
2. Read address
31C7 (hex)
Valid READ
3. Read address
03E0 (hex)
Valid READ
4. Read address
3C1F (hex)
Valid READ
5. Read address
303F (hex)
Valid READ
6. Read address
0C63 (hex)
Initiate RECALL cycle
Internally, RECALL is a two-step procedure. First, the
SRAM
data is cleared, and second, the nonvolatile
information is transferred into the SRAM cells. After
the t
RECALL cycle time the SRAM will once again be
ready for READ and WRITE operations. The RECALL
operation in no way alters the data in the nonvolatile
elements. The nonvolatile data can be recalled an
unlimited number of times.
AutoStore™ OPERATION
During
normal
AutoStore™
operation,
the
STK14C88-3 will draw current from V
CCX to charge a
capacitor connected to the V
CAP pin. This stored
charge will be used by the chip to perform a single
STORE
operation. After power up, when the voltage
on the V
CAP pin drops below VSWITCH, the part will
automatically disconnect the V
CAP pin from VCCX and
initiate a STORE operation.
Figure 2 shows the proper connection of capacitors
for automatic store operation. A charge storage
capacitor having a capacity of between 68
µF and
220
µF (± 20%) rated at 4.7V should be provided.
In order to prevent unneeded STORE operations,
automatic STOREs as well as those initiated by
externally driving HSB low, 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. An
optional pull-up resistor is shown connected to HSB.
This can be used to signal the system that the
AutoStore™ cycle is in progress.
Figure 2: AutoStore™ Mode
*If HSB is not used, it should be left unconnected.
If the power supply drops faster than 20
µs/volt
before V
CCX reaches VSWITCH, then a 1 ohm resistor
should be inserted between V
CCX and the system
supply to avoid a momentary excess of current
between Vccx and Vcap.
HSB OPERATION
The STK14C88-3 provides the HSB pin for control-
ling and acknowledging the STORE operations. The
HSB pin can be used to request a hardware STORE
cycle. When the HSB pin is driven low, the
STK14C88-3 will conditionally initiate a STORE oper-
ation after t
DELAY; an actual STORE cycle will only
begin if a WRITE to the SRAM took place since the
last STORE or RECALL cycle. The HSB pin also acts
as an open drain driver that is internally driven low
to indicate a busy condition while the STORE (initi-
ated by any means) is in progress.
SRAM READ
and WRITE operations that are in
progress when HSB is driven low by any means are
given time to complete before the STORE operation
is initiated. After HSB goes low, the STK14C88-3
will continue SRAM operations for t
DELAY. During tDELAY,
multiple SRAM READ operations may take place. If a
WRITE
is in progress when HSB is pulled low it will
be allowed a time, t
DELAY, to complete. However, any
SRAM WRITE
cycles requested after HSB goes low
will be inhibited until HSB returns high.
The HSB pin can be used to synchronize multiple
STK14C88-3s while using a single larger capacitor.
1
16
32
31
17
30
+
10k
Ω∗


Nº de peça semelhante - STK14C88-3RF35I

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Simtek Corporation
STK14C88-3 SIMTEK-STK14C88-3 Datasheet
492Kb / 17P
   32Kx8 AutoStore nvSRAM
STK14C88-3 SIMTEK-STK14C88-3 Datasheet
425Kb / 18P
   32Kx8 AutoStore nvSRAM
logo
Cypress Semiconductor
STK14C88-3 CYPRESS-STK14C88-3 Datasheet
618Kb / 17P
   256 Kbit (32K x 8) AutoStore nvSRAM
STK14C88-3 CYPRESS-STK14C88-3 Datasheet
1Mb / 18P
   256 Kbit (32K x 8) AutoStore nvSRAM Unlimited Read/Write endurance
logo
Simtek Corporation
STK14C88-3NF35 SIMTEK-STK14C88-3NF35 Datasheet
492Kb / 17P
   32Kx8 AutoStore nvSRAM
More results

Descrição semelhante - STK14C88-3RF35I

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
List of Unclassifed Man...
STK14C88 ETC-STK14C88 Datasheet
386Kb / 13P
   32K x 8 AutoStore nvSRAM QuantumTrap CMOS Nonvolatile Static RAM
logo
Simtek Corporation
STK25C48 SIMTEK-STK25C48 Datasheet
310Kb / 10P
   2K x 8 AutoStore??nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
logo
List of Unclassifed Man...
STK22C48 ETC1-STK22C48 Datasheet
297Kb / 11P
   2K x 8 AutoStore??nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
logo
Simtek Corporation
STK15C68 SIMTEK-STK15C68 Datasheet
382Kb / 10P
   8K x 8 AutoStore??nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
logo
List of Unclassifed Man...
STK12C68 ETC-STK12C68 Datasheet
388Kb / 13P
   8K x 8 AutoStore??nvSRAM QuantumTrap??CMOS Nonvolatile Static RAM
STK14D88 ETC-STK14D88 Datasheet
216Kb / 15P
   32K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM
STK16C88 ETC1-STK16C88 Datasheet
197Kb / 10P
   32K x 8 AutoStorePlus nvSRAM QuantumTrap CMOS Nonvolatile Static RAM
logo
Simtek Corporation
STK11C88-3 SIMTEK-STK11C88-3 Datasheet
366Kb / 10P
   32K x 8 nvSRAM 3.3V QuantumTrap??CMOS Nonvolatile Static RAM
logo
List of Unclassifed Man...
STK16C88-3 ETC1-STK16C88-3 Datasheet
319Kb / 11P
   32K x 8 AutoStorePlus nvSRAM 3.3V QuantumTrap CMOS Nonvolatile Static RAM
logo
Simtek Corporation
STK17T88 SIMTEK-STK17T88 Datasheet
581Kb / 28P
   32K x 8 AutoStore nvSRAM
More results


Html Pages

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


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
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