전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

SST34HF1642S-70-4E-L1SE 데이터시트(PDF) 4 Page - Silicon Storage Technology, Inc

부품명 SST34HF1642S-70-4E-L1SE
상세설명  16 Mbit Concurrent SuperFlash 2/4/8 Mbit SRAM ComboMemory
Download  38 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  SST [Silicon Storage Technology, Inc]
홈페이지  http://www.sst.com/
Logo SST - Silicon Storage Technology, Inc

SST34HF1642S-70-4E-L1SE 데이터시트(HTML) 4 Page - Silicon Storage Technology, Inc

  SST34HF1642S-70-4E-L1SE Datasheet HTML 1Page - Silicon Storage Technology, Inc SST34HF1642S-70-4E-L1SE Datasheet HTML 2Page - Silicon Storage Technology, Inc SST34HF1642S-70-4E-L1SE Datasheet HTML 3Page - Silicon Storage Technology, Inc SST34HF1642S-70-4E-L1SE Datasheet HTML 4Page - Silicon Storage Technology, Inc SST34HF1642S-70-4E-L1SE Datasheet HTML 5Page - Silicon Storage Technology, Inc SST34HF1642S-70-4E-L1SE Datasheet HTML 6Page - Silicon Storage Technology, Inc SST34HF1642S-70-4E-L1SE Datasheet HTML 7Page - Silicon Storage Technology, Inc SST34HF1642S-70-4E-L1SE Datasheet HTML 8Page - Silicon Storage Technology, Inc SST34HF1642S-70-4E-L1SE Datasheet HTML 9Page - Silicon Storage Technology, Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 38 page
background image
4
Advance Information
16 Mbit Concurrent SuperFlash + 2/4/8 Mbit SRAM ComboMemory
SST34HF1602C / SST34HF1622C / SST34HF1642C
SST34HF1642D / SST34HF1682D / SST34HF1622S / SST34HF1642S
©2004 Silicon Storage Technology, Inc.
S71256-00-000
3/04
Flash Write Operation Status Detection
The SST34HF16x2C/D/S provide one hardware and two
software means to detect the completion of a Write (Pro-
gram or Erase) cycle, in order to optimize the system
Write cycle time. The hardware detection uses the
Ready/Busy# (RY/BY#) pin. The software detection
includes two status bits: Data# Polling (DQ7) and Toggle
Bit (DQ6). The End-of-Write detection mode is enabled
after the rising edge of WE#, which initiates the internal
Program or Erase operation.
The actual completion of the nonvolatile write is asynchro-
nous with the system; therefore, either a Ready/Busy# (RY/
BY#), Data# Polling (DQ7) or Toggle Bit (DQ6) read may be
simultaneous with the completion of the Write cycle. If this
occurs, the system may possibly get an erroneous result,
i.e., valid data may appear to conflict with either DQ7 or
DQ6. In order to prevent spurious rejection, if an erroneous
result occurs, the software routine should include a loop to
read the accessed location an additional two (2) times. If
both reads are valid, then the device has completed the
Write cycle, otherwise the rejection is valid.
Ready/Busy# (RY/BY#)
The SST34HF16x2C/D/S include a Ready/Busy# (RY/
BY#) output signal. RY/BY# is an open drain output pin that
indicates whether an Erase or Program operation is in
progress. Since RY/BY# is an open drain output, it allows
several devices to be tied in parallel to VDD via an external
pull-up resistor. After the rising edge of the final WE# pulse
in the command sequence, the RY/BY# status is valid.
When RY/BY# is actively pulled low, it indicates that an
Erase or Program operation is in progress. When RY/BY#
is high (Ready), the devices may be read or left in standby
mode.
Byte/Word (CIOF)
The device includes a CIOF pin to control whether the
device data I/O pins operate x8 or x16. If the CIOF pin is at
logic “1” (VIH) the device is in x16 data configuration: all
data I/0 pins DQ0-DQ15 are active and controlled by BEF#
and OE#.
If the CIOF pin is at logic “0”, the device is in x8 data config-
uration: only data I/O pins DQ0-DQ7 are active and con-
trolled by BEF# and OE#. The remaining data pins DQ8-
DQ14 are at Hi-Z, while pin DQ15 is used as the address
input A-1 for the Least Significant Bit of the address bus.
Flash Data# Polling (DQ7)
When the devices are in an internal Program operation, any
attempt to read DQ7 will produce the complement of the
true data. Once the Program operation is completed, DQ7
will produce true data. During internal Erase operation, any
attempt to read DQ7 will produce a ‘0’. Once the internal
Erase operation is completed, DQ7 will produce a ‘1’. The
Data# Polling is valid after the rising edge of fourth WE# (or
BEF#) pulse for Program operation. For Sector-, Block-, or
Chip-Erase, the Data# Polling is valid after the rising edge
of sixth WE# (or BEF#) pulse. See Figure 11 for Data# Poll-
ing (DQ7) timing diagram and Figure 23 for a flowchart.
Toggle Bits (DQ6 and DQ2)
During the internal Program or Erase operation, any con-
secutive attempts to read DQ6 will produce alternating “1”s
and “0”s, i.e., toggling between 1 and 0. When the internal
Program or Erase operation is completed, the DQ6 bit will
stop toggling. The device is then ready for the next opera-
tion. The toggle bit is valid after the rising edge of the fourth
WE# (or BEF#) pulse for Program operations. For Sector-,
Block-, or Chip-Erase, the toggle bit (DQ6) is valid after the
rising edge of sixth WE# (or BEF#) pulse. DQ6 will be set to
“1” if a Read operation is attempted on an Erase-sus-
pended Sector/Block. If Program operation is initiated in a
sector/block not selected in Erase-Suspend mode, DQ6 will
toggle.
An additional Toggle Bit is available on DQ2, which can be
used in conjunction with DQ6 to check whether a particular
sector is being actively erased or erase-suspended. Table 1
shows detailed status bit information. The Toggle Bit (DQ2)
is valid after the rising edge of the last WE# (or BEF#)
pulse of a Write operation. See Figure 12 for Toggle Bit tim-
ing diagram and Figure 23 for a flowchart.
Note: DQ7, DQ6, and DQ2 require a valid address when reading
status information.
TABLE
1: WRITE OPERATION STATUS
Status
DQ7
DQ6
DQ2
RY/BY#
Normal
Operation
Standard
Program
DQ7#
Toggle
No Toggle
0
Standard
Erase
0
Toggle
Toggle
0
Erase-
Suspend
Mode
Read From
Erase
Suspended
Sector/Block
1
1
Toggle
1
Read From
Non-Erase
Suspended
Sector/Block
Data
Data
Data
1
Program
DQ7#
Toggle
N/A
0
T1.0 1256


유사한 부품 번호 - SST34HF1642S-70-4E-L1SE

제조업체부품명데이터시트상세설명
logo
Silicon Storage Technol...
SST34HF1641 SST-SST34HF1641 Datasheet
486Kb / 32P
   16 Mbit Concurrent SuperFlash 2 / 4 Mbit SRAM ComboMemory
SST34HF1641-70-4C-L1P SST-SST34HF1641-70-4C-L1P Datasheet
486Kb / 32P
   16 Mbit Concurrent SuperFlash 2 / 4 Mbit SRAM ComboMemory
SST34HF1641-70-4C-LFP SST-SST34HF1641-70-4C-LFP Datasheet
486Kb / 32P
   16 Mbit Concurrent SuperFlash 2 / 4 Mbit SRAM ComboMemory
SST34HF1641-70-4E-L1P SST-SST34HF1641-70-4E-L1P Datasheet
486Kb / 32P
   16 Mbit Concurrent SuperFlash 2 / 4 Mbit SRAM ComboMemory
SST34HF1641-70-4E-LFP SST-SST34HF1641-70-4E-LFP Datasheet
486Kb / 32P
   16 Mbit Concurrent SuperFlash 2 / 4 Mbit SRAM ComboMemory
More results

유사한 설명 - SST34HF1642S-70-4E-L1SE

제조업체부품명데이터시트상세설명
logo
Silicon Storage Technol...
SST34HF1621 SST-SST34HF1621 Datasheet
486Kb / 32P
   16 Mbit Concurrent SuperFlash 2 / 4 Mbit SRAM ComboMemory
SST34HF1621C SST-SST34HF1621C Datasheet
648Kb / 38P
   16 Mbit Concurrent SuperFlash 2/4 Mbit SRAM ComboMemory
SST34HF1681 SST-SST34HF1681 Datasheet
472Kb / 30P
   16 Mbit Concurrent SuperFlash 8 Mbit SRAM ComboMemory
SST34HF3244C SST-SST34HF3244C Datasheet
778Kb / 40P
   32 Mbit Concurrent SuperFlash 4 Mbit SRAM ComboMemory
SST34HF1641J SST-SST34HF1641J Datasheet
966Kb / 37P
   16 Mbit Concurrent SuperFlash 4/8 Mbit PSRAM ComboMemory
SST34HF3244 SST-SST34HF3244 Datasheet
943Kb / 41P
   32 Mbit Concurrent SuperFlash 4/8 Mbit PSRAM ComboMemory
SST34HF32A4 SST-SST34HF32A4 Datasheet
973Kb / 37P
   32 Mbit Concurrent SuperFlash 16 Mbit PSRAM ComboMemory
SST36VF1601 SST-SST36VF1601 Datasheet
404Kb / 26P
   16 Mbit Concurrent SuperFlash
logo
Greenliant systems
GLS36VF1601G GREENLIANT-GLS36VF1601G Datasheet
1Mb / 36P
   16 Mbit (x8/x16) Concurrent SuperFlash
logo
Silicon Storage Technol...
SST36VF1602E SST-SST36VF1602E Datasheet
419Kb / 35P
   16 Mbit (x8/x16) Concurrent SuperFlash
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38


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