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CAT24C21WITE13 Datasheet(PDF) 1 Page - Catalyst Semiconductor

No. de pieza CAT24C21WITE13
Descripción Electrónicos  1-kb Dual Mode Serial EEPROM for VESA??Plug-and-Play
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Fabricante Electrónico  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT24C21WITE13 Datasheet(HTML) 1 Page - Catalyst Semiconductor

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1
CAT24C21
1-kb Dual Mode Serial EEPROM for VESA
™ "Plug-and-Play"
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I2C Bus
Protocol.
FUNCTIONAL SYMBOL
FEATURES
s DDC1TM/DDC2TM interface compliant for
monitor identification
s 400 kHz I2C bus compatible*
s 2.5 to 5.5 volt operation
s 16-byte page write buffer
s Hardware write protect
s Low power CMOS technology
s 1,000,000 program/erase cycles
s 100 year data retention
s 8-pin DIP, SOIC, TSSOP, MSOP or TDFN
packages
s Industrial temperature range
DESCRIPTION
The CAT24C21 is a 1-kb Serial CMOS EEPROM
internally organized as 128 words of 8 bits each. The
device complies with the Video Electronics Standard
Association's (VESA™), Display Data Channel (DDC™)
standards for "Plug-and-Play" monitors. The "transmit-
only" mode (DDC1™) is controlled by the VCLK clock
input and the "bi-directional" mode (DDC2™) is controlled
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 1032, Rev. O
ALO
GEN FR
TM
LEAD FREE
by the SCL clock input, with both modes sharing a
common SDA input/output (I/O). The transmit-only mode
is a read-only mode, while the bi-directional mode is a
read and write mode following the I2C protocol. In write
mode the CAT24C21 features a 16-byte page write
buffer. The device is available in 8-in DIP, SOIC, TSSOP,
MSOP and TDFN packages.
PIN FUNCTIONS
Pin Name
Function
NC
No Connect
SDA
Serial Data/Address
SCL
Serial Clock (bi-directional mode)
VCLK
Serial Clock (transmit-only mode)
VCC
Power Supply
VSS
Ground
PIN CONFIGURATION
DIP Package (P, L)
SOIC Package (J, W)
TSSOP Package (U, Y)
MSOP Package (R, Z)
VCC
SCL
SDA
1
2
3
4
8
7
6
5
VSS
VCLK
NC
NC
NC
TDFN Package (RD4, ZD4)
3 mm x 3 mm
Top View
8
7
6
5
VCC
VCLK
SCL
SDA
VSS
1
2
3
4
NC
NC
NC
8
7
6
5
1
2
3
4
NC
NC
NC
VSS
VCC
VCLK
SCL
SDA
VCC
VCLK
SCL
SDA
1
2
3
4
8
7
6
5
VSS
NC
NC
NC
VCC
VCLK
SCL
SDA
1
2
3
4
8
7
6
5
VSS
NC
NC
NC
VCC
VSS
SDA
SCL
VCLK
CAT24C21


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