24c08.pdf

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SERIAL 8K (1K X 8) EEPROM - BRIEF DATA
ST24C08, ST25C08
ST24W08, ST25W08
SERIAL 8K (1K x 8) EEPROM
DATA BRIEFING
1 MILLION ERASE/WRITE CYCLES with
40 YEARS DATA RETENTION
SINGLE SUPPLY VOLTAGE:
– 3V to 5.5V for ST24x08 versions
– 2.5V to 5.5V for ST25x08 versions
– 1.8V to 5.5V for ST24C08R version only
HARDWARE WRITE CONTROL VERSIONS:
ST24W08 and ST25W08
PROGRAMMABLE WRITE PROTECTION
TWO WIRE SERIAL INTERFACE, FULLY I 2 C
BUS COMPATIBLE
BYTE and MULTIBYTE WRITE (up to 8
BYTES)
PAGE WRITE (up to 16 BYTES)
BYTE, RANDOM and SEQUENTIAL READ
MODES
SELF TIMED PROGRAMMING CYCLE
AUTOMATIC ADDRESS INCREMENTING
ENHANCED ESD/LATCH UP
PERFORMANCES
8
8
1
1
PSDIP8 (B)
0.25mm Frame
SO8 (M)
150mil Width
Logic Diagram
DESCRIPTION
This specification covers a range of 8K bits I 2 C bus
EEPROM products, the ST24/25C08, the
ST24C08R and the ST24/25W08. In the text, prod-
ucts are referred to as ST24/25x08, where "x" is:
"C" for Standard version and "W" for Hardware
Write Control version.
The ST24/25x08 are 8K bit electrically erasable
programmable memories (EEPROM), organized
as 4 blocks of 256 x 8 bits. They are manufactured
in SGS-THOMSON’s Hi-Endurance Advanced
CMOS technology which guarantees an endur-
ance of one million erase/write cycles with a data
retention of 40 years. The memories operate with
a power supply value as low as 1.8V for the
ST24C08R only.
Both Plastic Dual-in-Line and Plastic Small Outline
packages are available.
V CC
E
SDA
PRE
ST24x08
ST25x08
ST24C08R
SCL
MODE/WC*
V SS
AI00860D
Note: WC signal is only available for ST24/25W08 products.
B24C08/607
1/2
Complete data available on DATA-on-DISC CD-ROM or at www.st.com
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ST24/25C08, ST24C08R, ST24/25W08
DIP Pin Connections
Signal Names
PRE
Write Protect Enable
E
Chip Enable Input
ST24x08
ST25x08
ST24C08R
SDA
Serial Data Address Input/Output
SCL
Serial Clock
PRE
1
2
3
4
8
7
6
5
V CC
MODE
Multibyte/Page Write Mode
(C version)
NC
MODE/WC
WC
Write Control (W version)
E
SCL
V CC
Supply Voltage
V SS
SDA
V SS
Ground
AI00861D
Warning: NC = Not Connected.
Ordering Information Scheme
For a list of available options or for further informa-
tion on any aspect of this device, please contact
the SGS-THOMSON Sales Office nearest to you.
SO Pin Connections
Example: ST24C08 M 1 TR
ST24x08
ST25x08
ST24C08R
Operating Voltage Range
24C08 3V to 5.5V Standard
24W08 3V to 5.5V HW Write Control
25C08 2.5V to 5.5V Standard
25W08 2.5V to 5.5V HW Write Control
24C08R 1.8V to 5.5V Standard
PRE
1
8
7
6
5
V CC
NC
2
3
4
MODE/WC
E
SCL
V SS
SDA
AI01073D
Package
B PSDIP8
0.25mm Frame
M SO8
150mil Width
Warning: NC = Not Connected.
Temp. Range
1 0 to 70
°
C
5 (1)
–20 to 85
°
C
6 –40 to 85
°
C
3 (2)
–40 to 125
°
C
Option
TR Tape & Reel
Packing
Notes: 1. Temperature range on special request only.
2. Temperature range for ST24C08R only.
Devices are shipped from the factory with the memory
content set at all "1’s" (FFh).
2/2
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