X24C01A Datasheet | Xicor

DESCRIPTION 128 x 8 Bit FEATURES - - - - - - - - 2.7V to 5.5V Power Supply Low Power CMOS - Active Current Less Than 1 m A - Standby Current Less Than 50 µA Internally Organized 128 x 8 Self Timed Write Cycle - Typical Write Cycle Time of 5 ms 2 Wire Serial Interface - Bidirectional Data Transfer Protocol Four Byte Page Write Operation - Minimizes Total Write Time Per Byte High Reliability - Endurance: 100,000 Cycles - Data Retention: 100 Years New Hardwire - Write Control Function The X24C01A is a CMOS 1024 bit serial E2PROM, internally organized 128 x 8. The X24C01A features a serial interface and software protocol allowing operation on a simple two wire bus. Three address inputs allow up to eight devices to share a mon two wire bus. Xicor E2PROMs are designed and tested for applications requiring extended endurance. Inherent data retention is greater than 100 years. Available in an eight pin DIP and SOIC package. FUNCTIONAL DIAGRAM (8) VCC (4) VSS (7) WC START CYCLE (5) SDA START STOP LOGIC CONTROL LOGIC SLAVE ADDRESS REGISTER +PARATOR XDEC E2PROM 32x32 H.V. GENERATION TIMING & CONTROL (6) SCL (3) A2 (2) A1 (1) A0 LOAD WORD ADDRESS COUNTER R/W YDEC 8 CK PIN DOUT ACK 3841 FHD F01 DATA REGISTER DOUT © Xicor, 1991 Patents Pending 3841-1 Characteristics subject to change without notice PIN DESCRIPTIONS Serial Clock (SCL) The SCL input is used to clock all data into and out of the device. Serial Data (SDA) SDA is a bidirectional pin used to transfer data into and out of the device. It is an open drain output and may be wire-ORed with any number of open drain or open collector outputs. An open drain output requires the use of a pull-up resistor. For selecting typical values, refer to the Guidelines for Calculating Typical Values of Bus Pull-Up Resistors graph. Address (A0, A1, A2) The address inputs are used to set the least significant three bits of the seven bit slave address. These inputs can be static or actively driven. If used statically...