Advance Information
E
CAT24C208
8K (1K x 8) -Bit Dual Port Serial EEPROM for VESA Plug and Play Applications
in LCD Projectors and Monitors
TM
FEATURES
■ 400 kHz I2C bus compatible*
■ 1,000,000 program/erase cycles
■ 100 year data retention
■ Complies with VESA E-EDID, E-DDC, DI-EXT
and M1 specifications
■ 8-pin DIP, SOIC, TSSOP or MSOP packages
- Green package option
■ 3V to 5.5V volt operation
■ Industrial and extended temperature ranges
■ Low power CMOS technology
■ 16-byte page write buffer
■ Self-timed write cycle with auto-clear
DESCRIPTION
Using Catalyst's advanced CMOS technology which
substantially reduces device power requirements, the
CAT24C208 can be powered from either of two
independent VCC inputs.
The CAT24C208 is an 8k-bit Dual Port Serial CMOS
EEPROM internally organized as 1k words of 8 bits
each. The CAT24C208 features a 16-byte page write
buffer and can be accessed from either of two separate
I2C compatible ports, DSP (SDA, SCL) and DDC (SDA,
SCL) which conform to the VESA E-EDID EEPROM
Standard.
The CAT24C208 operates over the full industrial and
extended temperature range and is available in
miniature 8-pin DIP, SOIC, TSSOP and MSOP
packages.
Arbitration between the two interface ports is automatic
and allows the appearance of individual access to the
memory from each interface.
BLOCK DIAGRAM
DSP V
CC
DDC V
CC
ARBITRATION
LOGIC
D
E
C
O
D
E
R
S
D
E
C
O
D
E
R
S
1K X 8
MEMORY
ARRAY
DDC
CONTROL
LOGIC
DISPLAY
CONTROL
LOGIC
DSP SCL
DSP SDA
DDC SCL
DDC SDA
CONFIGURATION
REGISTER
EDID SEL
V
SS
2
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I C Bus Protocol.
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 1044, Rev. D
1