CAT24WC256 Datasheet | Catalyst Semiconductor

Preliminary 256K-Bit I2C Serial CMOS E2PROM Features s 1MHz I2C Bus patible- s 1.8 to 6 Volt Operation s Low Power CMOS Technology s 64-Byte Page Write Buffer s Self-Timed Write Cycle with Auto-Clear s mercial, Industrial and Automotive s Write Protect Feature - Entire Array Protected When WP at VIH s 100,000 Program/Erase Cycles s 100 Year Data Retention s 8-Pin DIP or 8-Pin SOIC Temperature Ranges DESCRIPTION The CAT24WC256 is a 256K-bit Serial CMOS E2PROM internally organized as 32,768 words of 8 bits each. Catalyst’s advanced CMOS technology substantially reduces device power requirements. The CAT24WC256 Features a 64-byte page write buffer. The device operates via the I2C bus serial interface and is available in 8-pin DIP or 8-pin SOIC packages. PIN CONFIGURATION DIP Package (P) A0 A1 NC VSS 1 2 3 4 8 7 6 5 VCC WP SCL SDA BLOCK DIAGRAM EXTERNAL LOAD DOUT ACK VCC VSS WORD ADDRESS BUFFERS COLUMN DECODERS 512 SENSE AMPS SHIFT REGISTERS SOIC Package (K) A0 A1 NC VSS 1 2 3 4 8 7 6 5 VCC WP SCL SDA 24WC256 F01 START/STOP LOGIC XDEC WP CONTROL LOGIC E2PROM 512X512 PIN FUNCTIONS Pin Name A0, A1 SDA SCL WP VCC VSS NC Function Address Inputs Serial Data/Address Serial Clock Write Protect SCL STATE COUNTERS SLAVE ADDRESS PARATORS 24WC256 F02 DATA IN STORAGE HIGH VOLTAGE/ TIMING CONTROL +1.8V to +6.0V Power Supply Ground No Connect A0 A1 - Catalyst Semiconductor is licensed by Philips Corporation to carry the I2C Bus Protocol. © 1998 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Doc. No. 25061-00 6/99 S-1 Preliminary...