24C64

FM24C64 – 64K-Bit Standard 2-Wire Bus Interface Serial EEPROM December 2001 FM24C64 – 64K-Bit Standard 2-Wire Bus Interface Serial EEPROM General Description FM24C64 is a 64Kbit CMOS non-volatile serial EEPROM organized as 8K x 8 bit memory. This device confirms to Extended IIC 2-wire protocol that allows accessing of memory in excess of 16Kbit on an IIC bus. This serial communication protocol uses a Clock signal (SCL) and a Data signal (SDA) to synchronously clock data between a master (e.g. a microcontroller) and a slave (EEPROM). FM24C64 is designed to minimize pin count and simplify PC board layout requirements. FM24C64 offers hardware write protection where by the entire memory array can be write protected by connecting WP pin to VCC. This section of memory then becomes unalterable until the WP pin is switched to VSS. “LZ” and “L” versions of FM24C64 offer very low standby current making them suitable for low power applications. This device is offered in SO, TSSOP and DIP packages. Fairchild EEPROMs are designed and tested for applications requiring high endurance, high reliability and low power consumption. Features I Extended operating voltage: 2.5V to 5.5V I Up to 400 KHz clock frequency at 2.5V to 5.5V I Low power consumption — 0.5mA active current typical — 10µA standby current typical — 1µA standby current typical (L version) — 0.1µA standby current typical (LZ version) I Schmitt trigger inputs I 32 byte page write mode I Self timed write cycle (6ms typical) I Hardware Write Protection for the entire array I Endurance: up to 100K data changes I Data Retention: Greater than 40 years I Packages: 8-Pin DIP, 8-Pin SO and 8-Pin TSSOP I Temperature range — Commercial: 0°C to +70°C — Industrial (E): -40°C to +85°C — Automotive (V): -40°C to +125°C Block Diagram VSS VCC WP SDA START STOP LOGIC CONTROL LOGIC SLAVE ADDRESS REGISTER & COMPARATOR E2PROM ARRAY WRITE LOCKOUT H.V. GENERATION TIMING &CONTROL SCL XDEC A2 A1 A0 WORD ADDRESS COUNTER R/W YDEC CK DIN DATA REGISTER DOUT © 2001 Fairchild Semiconductor Corporation FM24C64 Rev. C 1 www.fairchildsemi.com FM24C64 – 64K-Bit Standard 2-Wire Bus Interface Serial EEPROM Connection Diagram Dual-in-Line Package (N), SO Package (M8) and TSSOP Package (MT8) A0 A1 A2 VSS 1 2 8 7 VCC WP SCL SDA FM24C64 3 4 6 5 See Package Number N08E, M08A and MTC08 Pin Names VSS SDA SCL WP VCC A0, A1, A2 Ground Serial Data I/O Serial Clock Input Write Protect Power Supply Device Address Inputs 2 FM24C64 Rev. C www.fairchildsemi.com FM24C64 – 64K-Bit Standard 2-Wire Bus Interface Serial EEPROM Ordering Information FM 24 C XX F LZ E YY X Letter Blank X Package N M8 MT8 Blank E V Blank L LZ Blank F 64 C Interface 24 FM Description Tube Tape and Reel 8-pin DIP 8-pin SOIC 8-pin TSSOP 0 to 70°C -40 to +85°C -40 to +125°C 4.5V to 5.5V 2.5V to 5.5V 2.5V to 5.5V and