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The Microchip Technology Inc. 93XX66A/B/C devices are 4K bit low-voltage serial Electrically Erasable PROMs (EEPROM). Word-selectable devices such as the 93AA66C, 93LC66C or 93C66C are dependent upon external logic levels driving the ORG pin to set word size. For dedicated 8-bit communication, the 93XX66A devices are available, while the 93XX66B devices provide dedicated 16-bit communication. Advanced CMOS technology makes these devices ideal for low-power, nonvolatile memory applications. The entire 93XX Series is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead MSOP, 6-lead SOT-23, 8-lead 2x3 DFN and 8-lead TSSOP. Pb-free
(Pure Matte Sn) finish is available.

Automatic ERAL before WRAL

Self-Timed Erase and Write Cycle

Power On/Off Data Protection Circuitry

Sequential Read Function

Industry Standard 3-Wire Serial I/O

Capacitance, Input	7 pF
Capacitance, Output	7 pF
Current, Input, Leakage	±10 μA
Current, Operating	100 μA (Read), 3 mA (Write)
Current, Output, Leakage	±10 μA
Data Retention	<special id="6"/>special id="80"/>200
Density	4K
Dimensions	9.78 x 6.60 x 3.68 mm
Height	0.145" (3.68mm)
Interface	3-Wire
Length	0.385" (9.78mm)
Memory Capacity	4 kbit
Memory Type	Serial EEPROM
Mounting Type	Through Hole
Number of Bits per Word	8, 16 bit
Number of Pins	8
Operating Voltage Range	2.5 to 5.5 V
Organization	256 x 16, 512 x 8
Package Type	PDIP
Supply Voltage	2.5 to 5.5 V
Temperature, Operating	-40 to +125 °C
Temperature, Operating, Maximum	+85 °C
Temperature, Operating, Minimum	-25 °C
Temperature, Operating, Range	-25 to +85 °C
Time, Access	100 ns
Time, Address Hold	0 ns
Time, Address Setup	50 ns
Voltage, ESD	≥4 kV
Voltage, Input, High Level	3.5 V
Voltage, Input, Low Level	0.8, 0.5 V
Voltage, Output, High Level	2.3 V
Voltage, Output, Low Level	0.3 V
Voltage, Programmable	2.5 V
Width	0.26" (6.6mm)
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Capacitance, Input 7 pF  Microchip Technology Inc. Capacitance, Input 7 pF  EEPROM Memory Chips Capacitance, Input 7 pF  Microchip Technology Inc. EEPROM Memory Chips Capacitance, Input 7 pF   Capacitance, Output 7 pF  Microchip Technology Inc. Capacitance, Output 7 pF  EEPROM Memory Chips Capacitance, Output 7 pF  Microchip Technology Inc. EEPROM Memory Chips Capacitance, Output 7 pF   Current, Input, Leakage ±10 μA  Microchip Technology Inc. Current, Input, Leakage ±10 μA  EEPROM Memory Chips Current, Input, Leakage ±10 μA  Microchip Technology Inc. EEPROM Memory Chips Current, Input, Leakage ±10 μA   Current, Operating 100 μA (Read), 3 mA (Write)  Microchip Technology Inc. Current, Operating 100 μA (Read), 3 mA (Write)  EEPROM Memory Chips Current, Operating 100 μA (Read), 3 mA (Write)  Microchip Technology Inc. EEPROM Memory Chips Current, Operating 100 μA (Read), 3 mA (Write)   Current, Output, Leakage ±10 μA  Microchip Technology Inc. Current, Output, Leakage ±10 μA  EEPROM Memory Chips Current, Output, Leakage ±10 μA  Microchip Technology Inc. EEPROM Memory Chips Current, Output, Leakage ±10 μA   Data Retention <special id="6"/>special id="80"/>200  Microchip Technology Inc. Data Retention <special id="6"/>special id="80"/>200  EEPROM Memory Chips Data Retention <special id="6"/>special id="80"/>200  Microchip Technology Inc. EEPROM Memory Chips Data Retention <special id="6"/>special id="80"/>200   Density 4K  Microchip Technology Inc. Density 4K  EEPROM Memory Chips Density 4K  Microchip Technology Inc. EEPROM Memory Chips Density 4K   Dimensions 9.78 x 6.60 x 3.68 mm  Microchip Technology Inc. Dimensions 9.78 x 6.60 x 3.68 mm  EEPROM Memory Chips Dimensions 9.78 x 6.60 x 3.68 mm  Microchip Technology Inc. EEPROM Memory Chips Dimensions 9.78 x 6.60 x 3.68 mm   Height 0.145" (3.68mm)  Microchip Technology Inc. Height 0.145" (3.68mm)  EEPROM Memory Chips Height 0.145" (3.68mm)  Microchip Technology Inc. EEPROM Memory Chips Height 0.145" (3.68mm)   Interface 3-Wire  Microchip Technology Inc. Interface 3-Wire  EEPROM Memory Chips Interface 3-Wire  Microchip Technology Inc. EEPROM Memory Chips Interface 3-Wire   Length 0.385" (9.78mm)  Microchip Technology Inc. Length 0.385" (9.78mm)  EEPROM Memory Chips Length 0.385" (9.78mm)  Microchip Technology Inc. EEPROM Memory Chips Length 0.385" (9.78mm)   Memory Capacity 4 kbit  Microchip Technology Inc. Memory Capacity 4 kbit  EEPROM Memory Chips Memory Capacity 4 kbit  Microchip Technology Inc. EEPROM Memory Chips Memory Capacity 4 kbit   Memory Type Serial EEPROM  Microchip Technology Inc. Memory Type Serial EEPROM  EEPROM Memory Chips Memory Type Serial EEPROM  Microchip Technology Inc. EEPROM Memory Chips Memory Type Serial EEPROM   Mounting Type Through Hole  Microchip Technology Inc. Mounting Type Through Hole  EEPROM Memory Chips Mounting Type Through Hole  Microchip Technology Inc. EEPROM Memory Chips Mounting Type Through Hole   Number of Bits per Word 8, 16 bit  Microchip Technology Inc. Number of Bits per Word 8, 16 bit  EEPROM Memory Chips Number of Bits per Word 8, 16 bit  Microchip Technology Inc. EEPROM Memory Chips Number of Bits per Word 8, 16 bit   Number of Pins 8  Microchip Technology Inc. Number of Pins 8  EEPROM Memory Chips Number of Pins 8  Microchip Technology Inc. EEPROM Memory Chips Number of Pins 8   Operating Voltage Range 2.5 to 5.5 V  Microchip Technology Inc. Operating Voltage Range 2.5 to 5.5 V  EEPROM Memory Chips Operating Voltage Range 2.5 to 5.5 V  Microchip Technology Inc. EEPROM Memory Chips Operating Voltage Range 2.5 to 5.5 V   Organization 256 x 16, 512 x 8  Microchip Technology Inc. Organization 256 x 16, 512 x 8  EEPROM Memory Chips Organization 256 x 16, 512 x 8  Microchip Technology Inc. EEPROM Memory Chips Organization 256 x 16, 512 x 8   Package Type PDIP  Microchip Technology Inc. Package Type PDIP  EEPROM Memory Chips Package Type PDIP  Microchip Technology Inc. EEPROM Memory Chips Package Type PDIP   Supply Voltage 2.5 to 5.5 V  Microchip Technology Inc. Supply Voltage 2.5 to 5.5 V  EEPROM Memory Chips Supply Voltage 2.5 to 5.5 V  Microchip Technology Inc. EEPROM Memory Chips Supply Voltage 2.5 to 5.5 V   Temperature, Operating -40 to +125 °C  Microchip Technology Inc. Temperature, Operating -40 to +125 °C  EEPROM Memory Chips Temperature, Operating -40 to +125 °C  Microchip Technology Inc. EEPROM Memory Chips Temperature, Operating -40 to +125 °C   Temperature, Operating, Maximum +85 °C  Microchip Technology Inc. Temperature, Operating, Maximum +85 °C  EEPROM Memory Chips Temperature, Operating, Maximum +85 °C  Microchip Technology Inc. EEPROM Memory Chips Temperature, Operating, Maximum +85 °C   Temperature, Operating, Minimum -25 °C  Microchip Technology Inc. Temperature, Operating, Minimum -25 °C  EEPROM Memory Chips Temperature, Operating, Minimum -25 °C  Microchip Technology Inc. EEPROM Memory Chips Temperature, Operating, Minimum -25 °C   Temperature, Operating, Range -25 to +85 °C  Microchip Technology Inc. Temperature, Operating, Range -25 to +85 °C  EEPROM Memory Chips Temperature, Operating, Range -25 to +85 °C  Microchip Technology Inc. EEPROM Memory Chips Temperature, Operating, Range -25 to +85 °C   Time, Access 100 ns  Microchip Technology Inc. Time, Access 100 ns  EEPROM Memory Chips Time, Access 100 ns  Microchip Technology Inc. EEPROM Memory Chips Time, Access 100 ns   Time, Address Hold 0 ns  Microchip Technology Inc. Time, Address Hold 0 ns  EEPROM Memory Chips Time, Address Hold 0 ns  Microchip Technology Inc. EEPROM Memory Chips Time, Address Hold 0 ns   Time, Address Setup 50 ns  Microchip Technology Inc. Time, Address Setup 50 ns  EEPROM Memory Chips Time, Address Setup 50 ns  Microchip Technology Inc. EEPROM Memory Chips Time, Address Setup 50 ns   Voltage, ESD ≥4 kV  Microchip Technology Inc. Voltage, ESD ≥4 kV  EEPROM Memory Chips Voltage, ESD ≥4 kV  Microchip Technology Inc. EEPROM Memory Chips Voltage, ESD ≥4 kV   Voltage, Input, High Level 3.5 V  Microchip Technology Inc. Voltage, Input, High Level 3.5 V  EEPROM Memory Chips Voltage, Input, High Level 3.5 V  Microchip Technology Inc. EEPROM Memory Chips Voltage, Input, High Level 3.5 V   Voltage, Input, Low Level 0.8, 0.5 V  Microchip Technology Inc. Voltage, Input, Low Level 0.8, 0.5 V  EEPROM Memory Chips Voltage, Input, Low Level 0.8, 0.5 V  Microchip Technology Inc. EEPROM Memory Chips Voltage, Input, Low Level 0.8, 0.5 V   Voltage, Output, High Level 2.3 V  Microchip Technology Inc. Voltage, Output, High Level 2.3 V  EEPROM Memory Chips Voltage, Output, High Level 2.3 V  Microchip Technology Inc. EEPROM Memory Chips Voltage, Output, High Level 2.3 V   Voltage, Output, Low Level 0.3 V  Microchip Technology Inc. Voltage, Output, Low Level 0.3 V  EEPROM Memory Chips Voltage, Output, Low Level 0.3 V  Microchip Technology Inc. EEPROM Memory Chips Voltage, Output, Low Level 0.3 V   Voltage, Programmable 2.5 V  Microchip Technology Inc. Voltage, Programmable 2.5 V  EEPROM Memory Chips Voltage, Programmable 2.5 V  Microchip Technology Inc. EEPROM Memory Chips Voltage, Programmable 2.5 V   Width 0.26" (6.6mm)  Microchip Technology Inc. Width 0.26" (6.6mm)  EEPROM Memory Chips Width 0.26" (6.6mm)  Microchip Technology Inc. EEPROM Memory Chips Width 0.26" (6.6mm)