FM24C256E-SO-T-G from FUDAN MICRO, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	A0	input	Device address input bit 0. Sets one of the three hardware-selectable I2C slave address bits, allowing up to 8 FM24C256E devices on the same 2-wire bus. May be tied high, low, or left floating (internally pulled to GND if V_CC capacitive coupling is <3pF); FMSH recommends tying to GND for reliability.
2	A1	input	Device address input bit 1. Hardwired high/low to define the I2C slave address for multi-device bus operation. Left-floating pins are internally pulled to GND under low-coupling conditions; FMSH recommends tying to GND.
3	A2	input	Device address input bit 2. Hardwired high/low to define the I2C slave address for multi-device bus operation. Left-floating pins are internally pulled to GND under low-coupling conditions; FMSH recommends tying to GND.
4	GND	power_in	Ground reference (0V) for the device supply and I/O.
5	SDA	bidirectional	I2C serial data input/output. Open-drain, wire-OR compatible with other open-drain/open-collector devices. Requires an external pull-up resistor (AC test load 1.3 kΩ to V_CC). Input capacitance ≤6 pF, output capacitance ≤8 pF.
6	SCL	input	I2C serial clock input. Positive edge clocks data into the EEPROM; negative edge clocks data out. Max 1 MHz at V_CC = 2.5-5.5V, or 400 kHz at V_CC = 1.7V. Schmitt-triggered, noise-filtered input.
7	WP	input	Write-Protect input. WP = V_CC inhibits all writes to the memory (full memory protected); WP = GND allows normal writes (no protection). Left-floating pins are internally pulled to GND under low-coupling conditions; FMSH recommends tying to GND, then switching to V_CC before a write to create software write-protect.
8	VCC	power_in	Positive supply voltage. Operating range 1.7V to 5.5V (max 6.25V absolute). Typical supply current 0.4 mA read / 2.0 mA write at 5V/400kHz; standby ≤6.0 µA at 5.5V.

Key specifications

Parameter	Value
Manufacturer	FUDAN MICRO
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

FM24C256E-SO-T-GSO-U
FM24C256E-SO-T-G
FM24C256E-SO-T-GSO-U-R
FM24C256E-SO-T-R
FM24C256E-SO-T-GSO-U-G
FM24C256E-SO-T-GTS-U
FM24C256E-SO-T-GTS-T
FM24C256E-SO-T-GTS-U-R
FM24C256E-SO-T-GTS-T-R
FM24C256E-SO-T-GTS-U-G
FM24C256E-SO-T-GTS-T-G
FM24C256E-SO-T-GMS-U
FM24C256E-SO-T-GMS-T
FM24C256E-SO-T-GMS-U-G
FM24C256E-SO-T-GMS-T-G
FM24C256E-SO-T-GDN-U-G
FM24C256E-SO-T-GDN-T-G
FM24C256E-SO-T-GM2F-R
FM24C256E-SO-T-GM2P-R
FM24C256E-SO-T-GCT-R
FM24C256E-SO-T-GCT-T
FM24C256E-SO-T-GCTB-R
FM24C256E-SO-T-GCTB-T

CAD (KiCad official)

Symbol: FM24C256E-SO-T-G
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: FUDAN MICRO datasheet (29 pp, sha256 459267367ca024e3, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF