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

AT93C46DY6-YH-E EEPROM 1Kbit 3-Wire Serial 2MHz 8-UDFN

MPNAT93C46DY6-YH-E
End of Life

Microchip AT93C46DY6-YH-E, 1Kbit Serial EEPROM, 3-Wire Interface, 2 MHz Clock, 1.8V-5.5V Supply, 8-UFDFN Exposed Pad (2x3mm), -40°C to 85°C.

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

Specifications

AT93C46DY6-YH-E 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

1 Kbit serial EEPROM in a 2x3 mm package

The Microchip AT93C46DY6-YH-E is a 1 Kbit non-volatile EEPROM organized as 128 x 8 or 64 x 16 bits, accessed through a 3-wire serial interface. The 2 MHz clock frequency sets the read/write throughput ceiling; each write cycle takes 5 ms (word or page). This density tier is typical for storing calibration constants, serial numbers, or a small configuration block in industrial control, telecom, or sensor modules.

The 8-UFDFN with exposed pad (2x3 mm body) saves board area on compact designs; the thermal pad should be stitched to a ground plane with vias to pull heat out of the package during sustained write cycles.

For dual-sourcing or a density upgrade, the AT93C56B-SSHM-B (2 Kbit, same 3-wire interface, SOIC-8) is a functional step-up, though the package differs.

Frequently asked questions

Is AT93C46DY6-YH-E RoHS compliant?

The part is listed with a standard commercial finish; Microchip typically ships this series as RoHS-compliant. Confirm the specific date-code compliance with the quote if your receiving inspection requires a certificate.

Can AT93C46DY6-YH-E replace AT93C46D?

The AT93C46DY6-YH-E is a functional equivalent to the AT93C46D in the same 1 Kbit 3-wire serial family, but the package suffix (Y6 = 8-UDFN) differs from older DIP/SOIC variants. Verify the footprint on your board — the 2x3 mm DFN is smaller than a standard SOIC-8.

What is the write endurance (cycles) of AT93C46DY6-YH-E?

The evidence does not list a specific endurance figure. For Microchip 93Cxx series EEPROMs, the typical endurance is 1 million write cycles per sector; confirm the exact rating from the full datasheet if your application requires a guaranteed minimum.