ST24W04

ST24C04, ST25C04 ST24W04, ST25W04 4 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection 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. February 1999 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 ...