# FM93C46A-SO-T-G

**FUDAN MICRO** · EEPROM · SOP-8

FM93C46A-SO-T-G from FUDAN MICRO, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CS | input | Chip Select enables the device, and a rising edge on CS starts each instruction. |
| 2 | SK | input | Serial Clock input that synchronizes data on DI and DO, with a maximum frequency of 2 MHz at 2.5V to 5.5V and 1 MHz at 1.7V. |
| 3 | DI | input | Serial Data Input carries the start bit, op code, address and data bits, which are read on the rising edge of SK. |
| 4 | DO | tri_state | Serial Data Output clocks out read data and shows the Ready/Busy status during programming, and it is high impedance otherwise. |
| 5 | GND | power_in | Ground. |
| 6 | ORG | input | Organization Select gives x16 when connected to VCC or left unconnected and x8 when connected to ground, and it should be tied to VSS or VCC in standby to keep standby current low. |
| 7 | NC | unconnected | No connect. |
| 8 | VCC | power_in | Power supply, 1.7V to 5.5V. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Temperature |  | -55 |  | 125 | °C |  | 3 |
| Storage Temperature |  | -65 |  | 150 | °C |  | 3 |
| Voltage on Any Pin with Respect to Ground |  | -1 |  | 7 | V |  | 3 |
| Maximum Operating Voltage |  |  |  | 6.25 | V |  | 3 |
| DC output current |  |  |  | 5 | mA |  | 3 |
| Supply Voltage | VCC | 1.7 |  | 5.5 | V | Recommended operating range TA = -40°C to +85°C | 12 |
| Operating Temperature (recommended range) | TA | -40 |  | 85 | °C | VCC = +1.7V to +5.5V | 12 |
| Supply Voltage | VCC | 1.7 |  | 5.5 | V |  | 12 |
| ICC Supply Current | ICC |  |  | 2 | mA | VCC = 5.0V, fsk = 2.0 MHz CS = VIH, DO =open | 12 |
| ICC Supply Current | ICC |  |  | 1 | mA | VCC = 1.7V, fsk = 1.0 MHz | 12 |
| ISB Standby Current | ISB |  |  | 15 | µA | VCC=5V CS = SK = GND, ORG = VCC/GND | 12 |
| ISB Standby Current | ISB |  |  | 2 | µA | VCC = 1.7V | 12 |
| Input Leakage | ILI | -1 |  | 1 | µA | 0V ≤ VIN ≤ Vcc | 12 |
| Output Leakage | ILO | -1 |  | 1 | µA | 0V ≤ VOUT ≤ Vcc ; DO = Hi-Z | 12 |
| Input Low Voltage | VIL | -0.45 |  |  | V | VIL min reference only, not tested | 12 |
| Input Low Voltage | VIL |  |  | 0.2 | Vcc | VIL max reference only, not tested | 12 |
| Input High Voltage | VIH | 0.8 |  |  | Vcc | VIH max reference only, not tested | 12 |
| Output Low Voltage | VOL |  |  | 0.4 | V | VCC = 5V IOL = 2.1 mA | 12 |
| Output Low Voltage | VOL |  |  | 0.2 | V | VCC = 1.7V IOL = 100 µA | 12 |
| Output High Voltage | VOH | 0.8 |  |  | Vcc | VCC = 5V IOH = -400 µA | 12 |
| Input Capacitance | CIN |  |  | 6 | pF | VIN = 0V, f = 1 MHz | 12 |
| Output Capacitance | COUT |  |  | 8 | pF | VOUT = 0V, f = 1 MHz | 12 |
| SK Clock Frequency | fBSK |  |  | 1 | MHz | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| SK Clock Frequency | fBSK |  |  | 2 | MHz | 2.5V < Vcc ≤ 5.5V | 13 |
| SK Low Time | tBSKL | 250 |  |  | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| SK Low Time | tBSKL | 200 |  |  | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| SK High Time | tBSKHB | 250 |  |  | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| SK High Time | tBSKHB | 200 |  |  | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| Minimum CS Low | tBCS | 250 |  |  | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| Minimum CS Low | tBCS | 200 |  |  | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| CS Setup Time | tBCSSB | 50 |  |  | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| CS Hold Time | tBCSH | 0 |  |  | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| DI Setup Time | tDISB | 100 |  |  | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| DI Setup Time | tDISB | 50 |  |  | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| DI Hold Time | tBDIH | 100 |  |  | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| DI Hold Time | tBDIH | 50 |  |  | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| Output Delay to 1 | tBPD1 |  |  | 400 | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| Output Delay to 1 | tBPD1 |  |  | 200 | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| Output Delay to 0 | tBPD0 |  |  | 400 | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| Output Delay to 0 | tBPD0 |  |  | 200 | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| CS to Status Valid | tBSVB |  |  | 400 | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| CS to Status Valid | tBSVB |  |  | 200 | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| CS to DO in High | tBDFB |  |  | 200 | ns | 1.7V ≤ Vcc ≤ 2.5V | 13 |
| CS to DO in High | tBDFB |  |  | 100 | ns | 2.5V < Vcc ≤ 5.5V | 13 |
| Write Cycle | tBWRB |  |  | 5 | ms | 1.7V ≤ Vcc ≤ 2.5V | 13 |

## CAD (KiCad official)

- Symbol: `FM93C46A-SO-T-G`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `fm93c46a-so-t-g-etched.step` / `fm93c46a-so-t-g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fm93c46a-so-t-g.step` / `fm93c46a-so-t-g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FUDAN MICRO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884820289572864) (23 pp, sha256 `63fd901b62c9574a`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/fm93c46a-so-t-g-datasheet.pdf)