AT93C46 / 93Cxx (Microwire) → FT93C46 series
Cross-reference / replacement · Microchip · generic → Fremont Micro Devices
- Type:
- Microwire (3-wire) EEPROM
- Density:
- 1Kb / 2Kb / 4Kb
- Organization:
- x8 or x16
- Supply Voltage:
- 2.5~5.5V (A: 1.8~5.5V)
Compatibility & sourcing notes
FT93C46/56/66 is a standard 3-wire Microwire serial EEPROM in SOIC-8, pin-for-pin with the AT93C46 including the ORG pin (ORG=VCC → x16 words, ORG=GND → x8). The decisive caveat is word organization: confirm whether the design uses x8 or x16, and whether the original part actually has an ORG pin (some "93C46A"/fixed-organization variants are x16-only or repurpose that pin). Also confirm voltage (2.7–5.5V vs a 1.8V variant) and clock timing.
The two share a footprint and interface and can usually be swapped directly; before mass production, still confirm voltage, density, and timing against both datasheets.
Frequently asked questions
Can FT93C46 series replace the AT93C46 / 93Cxx (Microwire)? ▾
FT93C46/56/66 is a standard 3-wire Microwire serial EEPROM in SOIC-8, pin-for-pin with the AT93C46 including the ORG pin (ORG=VCC → x16 words, ORG=GND → x8). The decisive caveat is word organization: confirm whether the design uses x8 or x16, and whether the original part actually has an ORG pin (some "93C46A"/fixed-organization variants are x16-only or repurpose that pin). Also confirm voltage (2.7–5.5V vs a 1.8V variant) and clock timing.
What should I check when replacing the AT93C46 / 93Cxx (Microwire)? ▾
The two share a footprint and interface and can usually be swapped directly; before mass production, still confirm voltage, density, and timing against both datasheets.
Is the FT93C46 series in stock, and can I get a quote? ▾
JLink Technology is an authorized distributor and supplies FT93C46 series with stock, pricing, and lead time. Click "Request a Quote" with your quantity and we reply within one business day.