Features:

• Single supply with programming operation down

to 2.5V

• Low-power CMOS technology

• 100μA typical active read current at 2.5V

• 3μA typical standby current at 2.5V

• ORG pin selectable memory configuration

• 128 x 8- or 64 x 16-bit organization (93LC46)

• 256 x 8- or 128 x 16-bit organization (93LC56)

• 512 x 8 or 256 x 16 bit organization (93LC66)

• Self-timed erase and write cycles

(including auto-erase)

• Automatic ERAL before WRAL

• Power on/off data protection circuitry

• Industry standard 3-wire serial I/O

• Device status signal during erase/write cycles

• Sequential read function

• 1,000,000 E/W cycles ensured

• Data retention > 200 years

• 8-pin PDIP/SOIC

(SOIC in JEDEC standards)

Description:

The Microchip Technology Inc. 93LC46/56/66 are 1K,

2K and 4K low voltage serial Electrically Erasable

PROMs (EEPROM). The device memory is configured

as x8 or x16 bits depending on the external logic of

levels of the ORG pin. Advanced CMOS technology

makes these devices ideal for low power nonvolatile

memory applications. The 93LC Series is available in

standard 8-pin PDIP and surface mount SOIC

packages. The rotated pin-out 93LC46X/56X/66X are

offered in the “SN” package only.