поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

ST25W16 датащи(PDF) 11 Page - STMicroelectronics

номер детали ST25W16
подробное описание детали  16 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection
Download  17 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25W16 датащи(HTML) 11 Page - STMicroelectronics

Back Button ST25W16 Datasheet HTML 7Page - STMicroelectronics ST25W16 Datasheet HTML 8Page - STMicroelectronics ST25W16 Datasheet HTML 9Page - STMicroelectronics ST25W16 Datasheet HTML 10Page - STMicroelectronics ST25W16 Datasheet HTML 11Page - STMicroelectronics ST25W16 Datasheet HTML 12Page - STMicroelectronics ST25W16 Datasheet HTML 13Page - STMicroelectronics ST25W16 Datasheet HTML 14Page - STMicroelectronics ST25W16 Datasheet HTML 15Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 17 page
background image
Write Protection. Data in the upper four blocks of
256 bytes of the memory may be write protected.
The memory is write protected between a boundary
address and the top of memory (address
7FFh).The boundary address is user defined by
writing it in the Block Address Pointer (location
7FFh).
The Block Address Pointer is an 8 bit EEPROM
register located at the address 7FFh. It is com-
posed by 4 MSBs Address Pointer, which defines
the bottom boundary address, and 4 LSBs which
must be programmed at ’0’. This Address Pointer
can therefore address a boundary by page of 16
bytes.
The block in which the Block Address Pointer de-
fines the boundary of the write protected memory
is defined by the logic level applied on the PB1 and
PB0 input pins:
– PB1 =’0’and PB0 =’0’ select block 4
– PB1 =’0’and PB0 =’1’ select block 5
– PB1 =’1’and PB0 =’0’ select block 6
– PB1 =’1’and PB0 =’1’ select block 7
The following sequence should be used to set the
Write Protection:
– write the data to be protected into the top of
the memory, up to, but not including, location
7FFh;
– select the block by hardwiring the signals PB0
& PB1;
– set the protection by writing the correct bottom
boundary address in the Address Pointer (4
MSBs of location 7FFh) with bit b2 (Protect
Flag) set to ’0’.
Note that for a correct fonctionality of the memory,
all the 4 LSBs of the Block Address Pointer must
also be programmed at ’0’. The area will be pro-
tected when the PRE input is taken High.
Remark: The Write Protection is active if and only
if the PRE input pin is driven High and the bit 2 of
location 7FFh is set to ’0’. In all the other cases, the
memory Block will not be protected. While the PRE
input pin is read at ’0’ by the memory, the location
7FFh can be used as a normal EEPROM byte.
Caution: Special attention must be used when
using the protect mode together with the Multibyte
Write mode (MODE input pin High). If the Multibyte
Write starts at the location right below the first byte
of the Write Protected area, then the instruction will
write over the first 7 bytes of the Write Protected
area. The area protected is therefore smaller than
the content defined in the location 7FFh, by 7 bytes.
This does not apply to the Page Write mode as the
address counter ’roll-over’ and thus cannot go
above the 16 bytes lower boundary of the protected
area.
BYTE WRITE
DEV SEL
BYTE ADDR
DATA IN
MULTIBYTE
AND
PAGE WRITE
DEV SEL
BYTE ADDR
DATA IN 1
DATA IN 2
AI00793
DATA IN N
ACK
ACK
ACK
R/W
ACK
ACK
ACK
R/W
ACK
ACK
Figure 9. Write Modes Sequence (ST24/25C16)
11/17
ST24/25C16, ST24/25W16


Аналогичный номер детали - ST25W16

производительномер деталидатащиподробное описание детали
logo
STMicroelectronics
ST25W01 STMICROELECTRONICS-ST25W01 Datasheet
146Kb / 16P
   SERIAL 1K 128 x 8 EEPROM
November 1997
ST25W01B1TR STMICROELECTRONICS-ST25W01B1TR Datasheet
146Kb / 16P
   SERIAL 1K 128 x 8 EEPROM
November 1997
ST25W01B3TR STMICROELECTRONICS-ST25W01B3TR Datasheet
146Kb / 16P
   SERIAL 1K 128 x 8 EEPROM
November 1997
ST25W01B5TR STMICROELECTRONICS-ST25W01B5TR Datasheet
146Kb / 16P
   SERIAL 1K 128 x 8 EEPROM
November 1997
ST25W01B6TR STMICROELECTRONICS-ST25W01B6TR Datasheet
146Kb / 16P
   SERIAL 1K 128 x 8 EEPROM
November 1997
More results

Аналогичное описание - ST25W16

производительномер деталидатащиподробное описание детали
logo
STMicroelectronics
ST24C08 STMICROELECTRONICS-ST24C08 Datasheet
125Kb / 16P
   8 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection
February 1999
ST24C04 STMICROELECTRONICS-ST24C04 Datasheet
125Kb / 16P
   4 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection
February 1999
M24C16-W STMICROELECTRONICS-M24C16-W Datasheet
654Kb / 40P
   16-Kbit serial I2C bus EEPROM
Rev 11 - October 2020
M24164 STMICROELECTRONICS-M24164 Datasheet
135Kb / 21P
   16 Kbit Serial I2C BUS EEPROM
M93S46-W STMICROELECTRONICS-M93S46-W Datasheet
556Kb / 32P
   4 Kbit, 2 Kbit and 1 Kbit serial MICROWIRE bus EEPROM with write protection
January 2015 Rev 7
M34S32 STMICROELECTRONICS-M34S32 Datasheet
156Kb / 18P
   32K Serial I2C Bus EEPROM With User-Defined Read-Only Block and 32-Byte OTP Page
M24128-DFDW6TP STMICROELECTRONICS-M24128-DFDW6TP Datasheet
1Mb / 40P
   128-Kbit serial I2C bus EEPROM
M24C64-FMC6TG STMICROELECTRONICS-M24C64-FMC6TG Datasheet
465Kb / 42P
   64-Kbit serial I2C bus EEPROM
logo
Microchip Technology
34AA02 MICROCHIP-34AA02_V01 Datasheet
499Kb / 40P
   2-Kbit I2C Serial EEPROM Software Write-Protect
Revision G 04/2022
logo
ACE Technology Co., LTD...
ACE34AC04 ACE-ACE34AC04 Datasheet
824Kb / 22P
   4K I2C Serial EEPROM with Software Write Protection
VER 1.1
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
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