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ST24C04, ST25C04 ST24W04, ST25W04 4 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection NOT FOR NEW DESIGN 1 MILLION ERASE/WRITE CYCLES with 40 YEARS DATA RETENTION SINGLE SUPPLY VOLTAGE: ­ 3V to 5.5V for ST24x04 versions ­ 2.5V to 5.5V for ST25x04 versions HARDWARE WRITE CONTROL VERSIONS: ST24W04 and ST25W04 PROGRAMMABLE WRITE PROTECTION TWO WIRE SERIAL INTERFACE, FULLY I2C BUS COMPATIBLE BYTE and MULTIBYTE WRITE (up to 4 BYTES) PAGE WRITE (up to 8 BYTES) BYTE, RANDOM and SEQUENTIAL READ MODES SELF TIMED PROGRAMMING CYCLE AUTOMATIC ADDRESS INCREMENTING ENHANCED ESD/LATCH UP PERFORMANCES 8 1 PSDIP8 (B) 0.25mm Frame 8 1 SO8 (M) 150mil Width Figure 1. Logic Diagram DESCRIPTION This specification covers a range of 4 Kbits I2C bus EEPROM products, the ST24/25C04 and the ST24/25W04. In the text, products are referred to as ST24/25x04, where "x" is: "C" for Standard version and "W" for hardware Write Control version. Table 1. Signal Names PRE E1-E2 SDA SCL MODE WC VCC VSS Write Protect Enable Chip Enable Inputs Serial Data Address Input/Output Serial Clock Multibyte/Page Write Mode (C version) Write Control (W version) Supply Voltage Ground VCC 2 E1-E2 PRE SCL MODE/WC* ST24x04 ST25x04 SDA VSS AI00851E Note: WC signal is only available for ST24/25W04 products. December 2002 This is information on a product still in production but not recommended for new designs. 1/16 ST24/25C04, ST24/25W04 Figure 2A. DIP Pin Connections Figure 2B. SO Pin Connections ST24x04 ST25x04 PRE E1 E2 VSS 1 2 3 4 8 7 6 5 AI00852E ST24x04 ST25x04 VCC MODE/WC SCL SDA PRE E1 E2 VSS 1 2 3 4 8 7 6 5 AI01107E VCC MODE/WC SCL SDA Table 2. Absolute Maximum Ratings (1) Symbol TA TSTG TLEAD VIO VCC VESD Parameter Ambient Operating Temperature Storage Temperature Lead Temperature, Soldering Input or Output Voltages Supply Voltage Electrostatic Discharge Voltage (Human Body model) Electrostatic Discharge Voltage (Machine model) (3) (2) Value ­40 to 125 ­65 to 150 Unit °C °C °C V V V V (SO8 package) (PSDIP8 package) 40 sec 10 sec 215 260 ­0.6 to 6.5 ­0.3 to 6.5 4000 500 Notes: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not i mplied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. 2. MIL-STD-883C, 3015.7 (100pF, 1500 ). 3. EIAJ IC-121 (Condition C) (200pF, 0 ). DESCRIPTION (cont'd) The ST24/25x04 are 4 Kbit electrically erasable programmable memories (EEPROM), organized as 2 blocks of 256 x8 bits. They are manufactured in STMicroelectronics's Hi-Endurance Advanced CMOS technology which guarantees an endurance of one million erase/write