X24641 Datasheet (data sheet) PDF





X24641 Datasheet, 400 KHz 2-Wire Serial E 2 PROM

X24641   X24641  

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64K X24641 400 KHz 2-Wire Serial E2PROM 8K x 8 Bit FEATURES • • • • • • • • • 1.8V to 3.6 V, 2.5V to 5.5V and 4.5V to 5.5V Power Supply Operation Low Power CMOS —Acti ve Read Current Less Than 1mA —Active Write Current Less Than 3mA —Standby Current Less Than 1µA 400KHz Fast Mod e 2-Wire Serial Interface —Down to 1. 8V —Schmitt Trigger Input Noise Suppr ession —Output Slope Control for Grou nd Bounce Noise Elimination Internally Organized 8K x 8 32 Byte Page Write Mod e —Minimizes Total Write Time Per Byt e Hardware Write Protect Bidirectional Data Transfer Protocol Self-Timed Write Cycle —Typical Write Cycle Time of 5ms High Reliability —En

X24641 Datasheet, 400 KHz 2-Wire Serial E 2 PROM

X24641   X24641  
durance: 1,000,000 Cycles —Data Retent ion: 100 Years 8-Lead SOIC DESCRIPTION The X24641 is a CMOS Serial E2PROM Mem ory, internally organized 8K x 8. The d evice features a serial interface and s oftware protocol allowing operation on a simple two wire bus. The bus operates at 400KHz all the way down to 1.8V. Th ree device select inputs (S0–S2) allo w up to eight devices to share a common two wire bus. Hardware Write Protectio n is provided through a Write Protect ( WP) input pin on the X24641. When the W P pin is HIGH, the upper quadrant of th e Serial E2PROM array is protected agai nst any nonvolatile write attempts. Xic or Serial E2PROM Memories are designed and tested for applications requiring e xtended endurance. Inherent data retent ion is greater than 100 years. FUNCTIO NAL DIAGRAM SERIAL E2PROM DATA AND ADD RESS (SDA) DATA REGISTER Y DECODE LOGI C COMMAND DECODE AND CONTROL LOGIC SCL PAGE DECODE LOGIC S2 S1 S0 DEVICE SE LECT LOGIC WRITE PROTECT LOGIC E2PROM ARRAY 8K x 8 WP WRITE VOLTAGE CONTROL 7026 FM 01 ©Xicor, 1995, 1996 Patent s Pending 7026 3/27/97 T0/C0/D0 SH 1 Characteristics subject to change witho ut notice X24641 PIN DESCRIPTIONS Seri al Clock (SCL) The SCL input is used to clock all data into and out of the dev ice. Serial Data (SDA) SDA is a bidirectional pin used t








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