CAT34C02 Datasheet, PDF (1/15 Pages) Catalyst Semiconductor – 2-Kb I2C EEPROM for DDR2 DIMM Serial Presence Detect

CAT34C02
2 kb I²C EEPROM for DDR2
DIMM Serial Presence
Detect
Description
The CAT34C02 is a 2 kb Serial CMOS EEPROM, internally
organized as 16 pages of 16 bytes each, for a total of 256 bytes of 8 bits
each.
It features a 16−byte page write buffer and supports both the
Standard (100 kHz) as well as Fast (400 kHz) I²C protocol.
Write operations can be inhibited by taking the WP pin High (this
protects the entire memory) or by setting an internal Write Protect flag
via Software command (this protects the lower half of the memory).
In addition to Permanent Software Write Protection, the
CAT34C02 also features JEDEC compatible Reversible Software
Write Protection for DDR2 Serial Presence Detect (SPD)
applications operating over the 1.7 V to 3.6 V supply voltage range.
The CAT34C02 is fully backwards compatible with earlier
DDR1 SPD applications operating over the 1.7 V to 5.5 V supply
voltage range.
Features
• Supports Standard and Fast I²C Protocol
• 1.7 V to 5.5 V Supply Voltage Range
• 16−Byte Page Write Buffer
• Hardware Write Protection for Entire Memory
• Software Write Protection for Lower 128 Bytes
• Schmitt Triggers and Noise Suppression Filters on I²C Bus Inputs
(SCL and SDA)
• Low power CMOS Technology
• 1,000,000 Program/Erase Cycles
• 100 Year Data Retention
• Industrial Temperature Range
• This Device is Pb−Free, Halogen Free/BFR Free and RoHS
Compliant*
V_CC
SCL
A₂, A₁, A₀
WP
CAT34C02
SDA
http://onsemi.com
TSSOP−8
Y SUFFIX
CASE 948AL
TDFN−8
VP2 SUFFIX
CASE 511AK
UDFN−8
HU3 SUFFIX
CASE 517AX
UDFN−8 EP
HU4 SUFFIX
CASE 517AZ
PIN CONFIGURATION
A₀
1
V_CC
A₁
WP
A₂
SCL
V_SS
SDA
TSSOP (Y), TDFN (VP2),
UDFN (HU3), UDFN (HU4)
For the location of Pin 1, please consult the
corresponding package drawing.
Pin Name
A₀, A₁, A₂
SDA
SCL
WP
V_CC
V_SS
PIN FUNCTION
Function
Device Address Input
Serial Data Input/Output
Serial Clock Input
Write Protect Input
Power Supply
Ground
V_SS
Figure 1. Functional Symbol
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
© Semiconductor Components Industries, LLC, 2009
1
December, 2009 − Rev. 14
Publication Order Number:
CAT34C02/D