Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

CAT34WC02UI-1.8TE13 Datasheet(PDF) 7 Page - Catalyst Semiconductor

Part # CAT34WC02UI-1.8TE13
Description  2K-Bit I2C Serial EEPROM, Serial Presence Detect
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  CATALYST [Catalyst Semiconductor]
Direct Link  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT34WC02UI-1.8TE13 Datasheet(HTML) 7 Page - Catalyst Semiconductor

Back Button CAT34WC02UI-1.8TE13 Datasheet HTML 2Page - Catalyst Semiconductor CAT34WC02UI-1.8TE13 Datasheet HTML 3Page - Catalyst Semiconductor CAT34WC02UI-1.8TE13 Datasheet HTML 4Page - Catalyst Semiconductor CAT34WC02UI-1.8TE13 Datasheet HTML 5Page - Catalyst Semiconductor CAT34WC02UI-1.8TE13 Datasheet HTML 6Page - Catalyst Semiconductor CAT34WC02UI-1.8TE13 Datasheet HTML 7Page - Catalyst Semiconductor CAT34WC02UI-1.8TE13 Datasheet HTML 8Page - Catalyst Semiconductor CAT34WC02UI-1.8TE13 Datasheet HTML 9Page - Catalyst Semiconductor CAT34WC02UI-1.8TE13 Datasheet HTML 10Page - Catalyst Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 7 / 10 page
background image
CAT34WC02
7
Doc No. 1003, Rev. A
memory array is protected and becomes read only. The
entire memory becomes write protected regardless of
whether the write protect register has been written or
not. When WP pin is tied to Vcc, the user cannot program
the write protect register. If the WP pin is left floating or
tied to Vss, the device can be written into (except the first
128 bytes if the write protect register is programmed).
Software
The software protection on the CAT34WC02 protects
the first 128 bytes of the memory array permanently.
Software write protect is implemented by programming
the write protect register.
A user can write only once to
the write protect register and once written it is irrevers-
ible (even if you reset the CAT34WC02).
The write protection register is written by sending a
regular byte write command with the slave address set
to 0110 instead of 1010. After the initial acess to the
register, the device will not acknowledge any further
access to this register.
READ OPERATIONS
The READ operation for the CAT34WC02 is initiated in
the same manner as the write operation with the one
exception that the R/
W bit is set to a one. Three different
READ operations are possible: Immediate Address
READ, Selective READ and Sequential READ.
Immediate Address Read
The CAT34WC02’s address counter contains the ad-
dress of the last byte accessed, incremented by one. In
other words, if the last READ or WRITE access was to
address N, the READ immediately following would ac-
cess data from address N+1. If N = 255 for 34WC02,
then the counter will ‘wrap around’ to address 0 and
continue to clock out data. After the CAT34WC02 re-
ceives its slave address information (with the R/
W bit set
to one), it issues an acknowledge, then transmits the 8-
bit byte requested. The master device does not send an
acknowledge but will generate a STOP condition.
Selective Read
Selective READ operations allow the Master device to
select at random any memory location for a READ
operation. The Master device first performs a ‘dummy’
write operation by sending the START condition, slave
address and byte address of the location it wishes to
read. After the CAT34WC02 acknowledge the word
address, the Master device resends the START condi-
tion and the slave address, this time with the R/
W bit set
to one. The CAT34WC02 then responds with its ac-
knowledge and sends the 8-bit byte requested. The
master device does not send an acknowledge but will
generate a STOP condition.
Sequential Read
The Sequential READ operation can be initiated by
either the Immediate Address READ or Selective READ
operations. After the CAT34WC02 sends the initial 8-bit
data requested, the Master will respond with an ac-
knowledge which tells the device it requires more data.
The CAT34WC02 will continue to output a byte for each
acknowledge sent by the Master. The operation will
terminate operation when the Master fails to respond
with an acknowledge, thus sending the STOP condition.
The data being transmitted from the CAT34WC02 is
outputted sequentially with data from address N fol-
lowed by data from address N+1. The READ operation
address counter increments all of the CAT34WC02
address bits so that the entire memory array can be read
during one operation. If more than the 256 bytes are read
out, the counter will “wrap around” and continue to clock
out data bytes.
5020 FHD F10
Figure 8. Immediate Address Read Timing
SLAVE
ADDRESS
S
A
C
K
DATA
N
O
A
C
K
S
T
O
P
P
BUS ACTIVITY:
MASTER
SDA LINE
S
T
A
R
T
SCL
SDA
8TH BIT
STOP
NO ACK
DATA OUT
89
K


Similar Part No. - CAT34WC02UI-1.8TE13

ManufacturerPart #DatasheetDescription
logo
Catalyst Semiconductor
CAT34WC02UITE13A CATALYST-CAT34WC02UITE13A Datasheet
275Kb / 10P
   2-kb I2C Serial EEPROM, Serial Presence Detect
CAT34WC02UITE13C CATALYST-CAT34WC02UITE13C Datasheet
275Kb / 10P
   2-kb I2C Serial EEPROM, Serial Presence Detect
CAT34WC02UITE13E CATALYST-CAT34WC02UITE13E Datasheet
275Kb / 10P
   2-kb I2C Serial EEPROM, Serial Presence Detect
More results

Similar Description - CAT34WC02UI-1.8TE13

ManufacturerPart #DatasheetDescription
logo
Catalyst Semiconductor
CAT34WC02 CATALYST-CAT34WC02_05 Datasheet
275Kb / 10P
   2-kb I2C Serial EEPROM, Serial Presence Detect
CAT34RC02 CATALYST-CAT34RC02_05 Datasheet
666Kb / 14P
   2-kb I2C Serial EEPROM, Serial Presence Detect
CAT34RC02 CATALYST-CAT34RC02 Datasheet
433Kb / 16P
   2-kb I2C Serial EEPROM, Serial Presence Detect
34RC02 CATALYST-34RC02 Datasheet
445Kb / 16P
   2-kb I2C Serial EEPROM, Serial Presence Detect
CAT34FC02 CATALYST-CAT34FC02 Datasheet
451Kb / 10P
   2-kb I2C Serial EEPROM, Serial Presence Detect
CAT34C02 CATALYST-CAT34C02 Datasheet
309Kb / 17P
   2-Kb I2C EEPROM for DDR2 DIMM Serial Presence Detect
logo
ON Semiconductor
CAT34C02 ONSEMI-CAT34C02 Datasheet
173Kb / 15P
   2 kb I2C EEPROM for DDR2 DIMM Serial Presence Detect
December, 2009 ??Rev. 14
logo
STMicroelectronics
M34E04B STMICROELECTRONICS-M34E04B Datasheet
566Kb / 35P
   4-Kbit Serial Presence Detect EEPROM compatible
logo
Microchip Technology
24VL024 MICROCHIP-24VL024 Datasheet
488Kb / 30P
   2K I2C??Serial EEPROM
2009
24AA02 MICROCHIP-24AA02_07 Datasheet
401Kb / 26P
   2K I2C??Serial EEPROM
2007
More results


Html Pages

1 2 3 4 5 6 7 8 9 10


Datasheet Download

Go To PDF Page


Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   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