Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

GD25Q21B Datasheet(PDF) 10 Page - ELM Electronics

Part # GD25Q21B
Description  Uniform Sector Dual and Quad Serial Flash
Download  49 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ELM [ELM Electronics]
Direct Link  http://www.elmelectronics.com
Logo ELM - ELM Electronics

GD25Q21B Datasheet(HTML) 10 Page - ELM Electronics

Back Button GD25Q21B Datasheet HTML 6Page - ELM Electronics GD25Q21B Datasheet HTML 7Page - ELM Electronics GD25Q21B Datasheet HTML 8Page - ELM Electronics GD25Q21B Datasheet HTML 9Page - ELM Electronics GD25Q21B Datasheet HTML 10Page - ELM Electronics GD25Q21B Datasheet HTML 11Page - ELM Electronics GD25Q21B Datasheet HTML 12Page - ELM Electronics GD25Q21B Datasheet HTML 13Page - ELM Electronics GD25Q21B Datasheet HTML 14Page - ELM Electronics Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 49 page
background image
10
Rev.1.1
49 -
http://www.elm-tech.com
GD25Q21BxIGx Uniform Sector Dual and Quad Serial Flash
7. COMMANDS DESCRIPTION
All commands, addresses and data are shifted in and out of the device, beginning with the most significant bit
on the first rising edge of SCLK after CS# is driven low. Then, the one-byte command code must be shifted in
to the device, most significant bit first on SI, each bit being latched on the rising edges of SCLK.
See Table2, every command sequence starts with a one-byte command code. Depending on the command, this
might be followed by address bytes, or by data bytes, or by both or none. CS# must be driven high after the last
bit of the command sequence has been shifted in. For the command of Read, Fast Read, Read Status Register or
Release from Deep Power-Down, and Read Device ID, the shifted-in command sequence is followed by a data-
out sequence. CS# can be driven high after any bit of the data-out sequence is being shifted out.
For the command of Page Program, Sector Erase, Block Erase, Chip Erase, Write Status Register, Write
Enable, Write Disable or Deep Power-Down command, CS# must be driven high exactly at a byte boundary,
otherwise the command is rejected, and is not executed. That is CS# must driven high when the number of clock
pulses after CS# being driven low is an exact multiple of eight. For Page Program, if at any time the input byte
is not a full byte, nothing will happen and WEL will not be reset.
QE bit.
The Quad Enable (QE) bit is a non-volatile Read/Write bit in the Status Register that allows Quad operation.
When the QE bit is set to 0 (Default) the WP# pin and HOLD# pin are enable. When the QE pin is set to 1,
the Quad IO2 and IO3 pins are enabled. (The QE bit should never be set to 1 during standard SPI or Dual SPI
operation if the WP# or HOLD# pins are tied directly to the power supply or ground).
HPF bit.
The High Performance Flag (HPF) bit indicates the status of High Performance Mode (HPM). When HPF bit
sets to 1, it means the device is in High Performance Mode, when HPF bit sets 0 (default), it means the device is
not in High Performance Mode.
LB3, LB2, LB1, bits.
The LB3, LB2, LB1, bits are non-volatile One Time Program (OTP) bits in Status Register (S13-S11) that
provide the write protect control and status to the Security Registers. The default state of LB3-LB1 are 0,
the security registers are unlocked. The LB3-LB1 bits can be set to 1 individually using the Write Register
instruction. The LB3-LB1 bits are One Time Programmable, once its set to 1, the Security Registers will become
read-only permanently.
CMP bit.
The CMP bit is a non-volatile Read/Write bit in the Status Register (S14). It is used in conjunction the BP4-
BP0 bits to provide more flexibility for the array protection. Please see the Status registers Memory Protection
table for details. The default setting is CMP=0.
SUS bit.
The SUS bit is read only bit in the status register (S15) that is set to 1 after executing an Erase/Program
Suspend (75H) command. The SUS bit is cleared to 0 by Erase/Program Resume (7AH) command as well as a
power-down, power-up cycle.


Similar Part No. - GD25Q21B

ManufacturerPart #DatasheetDescription
logo
ELM Electronics
GD25Q21B ELM-GD25Q21B Datasheet
3Mb / 49P
   2M-bit Serial Flash
logo
GigaDevice Semiconducto...
GD25Q21B GIGADEVICE-GD25Q21B Datasheet
1,012Kb / 51P
   Uniform Sector Dual and Quad Serial Flash
2.1 2015-12-15
GD25Q21BOIGR GIGADEVICE-GD25Q21BOIGR Datasheet
1,012Kb / 51P
   Uniform Sector Dual and Quad Serial Flash
2.1 2015-12-15
GD25Q21BOIGT GIGADEVICE-GD25Q21BOIGT Datasheet
1,012Kb / 51P
   Uniform Sector Dual and Quad Serial Flash
2.1 2015-12-15
GD25Q21BOIGY GIGADEVICE-GD25Q21BOIGY Datasheet
1,012Kb / 51P
   Uniform Sector Dual and Quad Serial Flash
2.1 2015-12-15
More results

Similar Description - GD25Q21B

ManufacturerPart #DatasheetDescription
logo
ACE Technology Co., LTD...
ACE25C512G ACE-ACE25C512G Datasheet
1Mb / 37P
   Uniform Sector Dual and Quad Serial Flash
VER 1.5
ACE25C100G ACE-ACE25C100G Datasheet
1Mb / 37P
   Uniform Sector Dual and Quad Serial Flash
VER 1.4
logo
GigaDevice Semiconducto...
GD25VE16C GIGADEVICE-GD25VE16C Datasheet
1Mb / 60P
   Uniform Sector Dual and Quad Serial Flash
GD25VQ16C GIGADEVICE-GD25VQ16C Datasheet
1Mb / 59P
   Uniform Sector Dual and Quad Serial Flash
logo
ACE Technology Co., LTD...
ACE25C320G ACE-ACE25C320G Datasheet
2Mb / 37P
   Uniform SECTOR Dual and Quad Serial Flash
VER 1.5
logo
GigaDevice Semiconducto...
GD25VE40C GIGADEVICE-GD25VE40C Datasheet
1Mb / 55P
   Uniform Sector Dual and Quad Serial Flash
GD25VQ127C GIGADEVICE-GD25VQ127C Datasheet
1Mb / 62P
   Uniform Sector Dual and Quad Serial Flash
logo
ACE Technology Co., LTD...
ACE25C160G ACE-ACE25C160G Datasheet
1Mb / 36P
   Uniform SECTOR Dual and Quad Serial Flash
VER 1.5
logo
ELM Technology Corporat...
GD25D10XIGX ELM-TECH-GD25D10XIGX Datasheet
2Mb / 28P
   Uniform sector dual and quad serial flash
logo
GigaDevice Semiconducto...
GD25VQ40C GIGADEVICE-GD25VQ40C Datasheet
1Mb / 56P
   Uniform Sector Dual and Quad Serial Flash
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 39 40 41 42 43 44 45 46 47 48 49


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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