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Microchip Technology AT93C46DY6-YH-T — Memory (DRAM / SRAM / Flash / EEPROM)

AT93C46DY6-YH-T EEPROM, 1Kbit, 2 MHz, 3-Wire Serial

MPNAT93C46DY6-YH-T
End of Life

Microchip AT93C46DY6-YH-T, 1Kbit serial EEPROM, 3-Wire interface, 2 MHz clock, 1.8V-5.5V supply, 128x8 / 64x16 organization, 8-UFDFN Exposed Pad package, -40°C to 85°C.

$0.3Ref. price · indicative, final on quote
Microchip Technology AT93C46DY6-YH-T datasheet (PDF)
Packaging8-UFDFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

AT93C46DY6-YH-T specifications
ParameterValue
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage1.8V ~ 5.5V
Clock frequency2 MHz
Memory interface3-Wire Serial
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
TechnologyEEPROM
Memory size1Kbit
Memory formatEEPROM
Case8-UFDFN Exposed Pad
Memory organization128 x 8, 64 x 16
Write cycle time - word, page5ms

Product details

1Kbit serial EEPROM in a 2x3 mm Mini Map package

The Microchip AT93C46DY6-YH-T is a 1Kbit serial EEPROM organized as 128 x 8 or 64 x 16 bits, accessed through a 3-Wire serial interface. The part is housed in an 8-UFDFN Exposed Pad package (8-Mini Map, 2x3 mm) for surface-mount assembly, with the exposed pad aiding heat transfer into the PCB.

Supply voltage flexibility and write timing

The 1.8V minimum supply voltage lets this EEPROM work directly from a 1.8V MCU or FPGA bank without a level shifter, while the 5.5V maximum covers 5V legacy buses. The 3-Wire serial interface (CS, SK, DI/DO) is the same as the industry-standard 93C46 family, so existing driver code usually ports with minimal changes.

Frequently asked questions

Is AT93C46DY6-YH-T compatible with 1.8V systems?

Yes. The supply voltage range is 1.8V to 5.5V, so it operates directly from a 1.8V rail without a level shifter. The 3-Wire serial interface logic levels track VCC, so a 1.8V supply means 1.8V I/O.

What is the equivalent of AT93C46DY6-YH-T?

The closest functional equivalent is the AT93C46DY6-YH-E, which shares the same 1Kbit density, 2 MHz clock, 3-Wire interface, and 8-Mini Map package. The -YH-E suffix indicates a different packing option (Digi-Reel vs Tape & Reel), not a functional difference. For a 2Kbit alternative in a larger SOIC package, consider the AT93C56B-SSHM-B.