CAT24C03 Datasheet, PDF (1/14 Pages) Catalyst Semiconductor – 2-Kb I2C CMOS Serial EEPROM with Partial Array Write Protection

CAT24C03, CAT24C05
2-Kb and 4-Kb I²C Serial
EEPROM with Partial Array
Write Protection
Description
The CAT24C03/05 is a 2−Kb/4−Kb CMOS Serial EEPROM device
organized internally as 16/32 pages of 16 bytes each, for a total of
256x8/512x8 bits. These devices support both Standard (100 kHz) as
well as Fast (400 kHz) I²C protocol.
Data is written by providing a starting address, then loading 1 to 16
contiguous bytes into a Page Write Buffer, and then writing all data to
non−volatile memory in one internal write cycle. Data is read by
providing a starting address and then shifting out data serially while
automatically incrementing the internal address count.
Write operations can be inhibited for upper half of memory by
taking the WP pin High.
External address pins make it possible to address up to eight
CAT24C03 or four CAT24C05 devices on the same bus.
Features
• Supports Standard and Fast I²C Protocol
• 1.8 V to 5.5 V Supply Voltage Range
• 16−Byte Page Write Buffer
• Hardware Write Protection for Upper Half of Memory
• 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
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
V_CC
SCL
A₂, A₁, A₀
WP
CAT24C03
CAT24C05
SDA
V_SS
Figure 1. Functional Symbol
http://onsemi.com
PDIP−8
L SUFFIX
CASE 646AA
TSOT−23
TD SUFFIX
CASE 419AE
SOIC−8
W SUFFIX
CASE 751BD
TSSOP8
Y SUFFIX
CASE 948AL
TDFN8
VP2 SUFFIX
CASE 511AK
PIN CONFIGURATIONS
TSOT−23 (TD)
SCL
1
5
WP
V_SS
2
SDA
3
4
V_CC
PDIP (L), SOIC (W),
TSSOP (Y), TDFN (VP2)
CAT24C05/03
NC/A₀
1
8
V_CC
A₁/A₁
27
WP
A₂/A₂
36
SCL
V_SS
45
SDA
(Top Views)
PIN FUNCTION
Pin Name
Function
A0, A1, A2
Device Address Inputs
SDA
Serial Data Input/Output
SCL
Serial Clock Input
WP
Write Protect Input
V_CC
Power Supply
V_SS
Ground
NC
No Connect
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
August, 2009 − Rev. 3
Publication Order Number:
CAT24C03/D