93LCS66

Obsolete Device 93LCS56/66 2K/4K 2.5V Microwire® Serial EEPROM with Software Write Protect FEATURES Single supply with programming operation down to 2.5V Low power CMOS technology - 1 mA active current typical - 5 µA standby current (typical) at 3.0V x16 memory organization - 128x16 (93LCS56) - 256x16 (93LCS66) Software write protection of user defined memory space Self timed erase and write cycles Automatic ERAL before WRAL Power on/off data protection Industry standard 3-wire serial I/O Device status signal during E/W Sequential READ function 1,000,000 E/W cycles guaranteed Data retention > 200 years 8-pin PDIP/SOIC and 14-pin SOIC packages Temperature ranges supported - Commercial (C): - Industrial (I): 0°C to +70°C -40°C to +85°C BLOCK DIAGRAM V CC V SS MEMORY ARRAY ADDRESS DECODER DI PRE PE CS CLK DATA REGISTER MODE DECODE LOGIC CLOCK GENERATOR ADDRESS COUNTER OUTPUT BUFFER DO DESCRIPTION The Microchip ...