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FM1702SL
Public Made by Adomby adom
FUDAN MICRO RFID ICs, SOIC-24-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownFM1702SL
FUDAN MICRO · RFID ICs · SOIC-24-300mil
FM1702SL from FUDAN MICRO, in a SOIC-24-300mil. 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 | OSCIN | input | Crystal oscillator input at fosc = 13.56 MHz; an external clock is not recommended and must meet the frequency, 40-60% duty cycle and jitter limits in section 19.5.2. |
| 2 | IRQ | output | Interrupt request output that signals interrupt sources; it is push-pull or open-drain depending on IRQPushPull, and it is high-impedance during reset. |
| 3 | MFIN | input | Serial input that receives the digital serial signal conforming to the ISO14443A protocol, with Schmitt-trigger input thresholds. |
| 4 | TX1 | output | Transmitter output 1 that delivers the modulated 13.56 MHz carrier, driving the antenna directly through a matching network. |
| 5 | TVDD | power_in | Transmitter supply that provides the output energy for TX1 and TX2, with an operating range of 3.0 V to 5.5 V. |
| 6 | TX2 | output | Transmitter output 2 that delivers the modulated 13.56 MHz carrier, driving the antenna directly through a matching network. |
| 7 | TVSS | power_in | Transmitter ground. |
| 8 | C0 | input | Configuration pin that must be fixed to a low level. |
| 9 | C1 | input | Configuration pin that must be fixed to a high level. |
| 10 | C2 | input | Configuration pin that must be fixed to a high level. |
| 11 | DVSS | power_in | Digital ground. |
| 12 | MISO | output | Master-in slave-out data output of the SPI interface. |
| 13 | SCK | input | Serial clock input for the SPI interface; the FM1702SL is slave-only, so the master must supply SCK. |
| 14 | MOSI | input | Master-out slave-in data input of the SPI interface. |
| 15 | NSS | input | Interface strobe that selects the SPI interface mode; NSS must stay low for multi-byte transfers and go high between data streams. |
| 16 | C3 | input | Configuration pin that must be fixed to a low level. |
| 17 | DVDD | power_in | Digital supply, 3.0-3.6 V (CMOS) or 4.5-5.5 V (TTL), with DVDD less than or equal to AVDD and AVDD less than or equal to TVDD. |
| 18 | AVDD | power_in | Analog supply, 3.0-3.6 V, which must be at least DVDD and no higher than TVDD. |
| 19 | AUX | output | Analog test signal output whose signal is selected by the TestAnaOutSel register. |
| 20 | AVSS | power_in | Analog ground. |
| 21 | RX | input | Receiver input that receives the 13.56 MHz card response signal coupled from the external antenna. |
| 22 | VMID | power_out | Internal reference voltage output that requires an external 68 nF capacitor. |
| 23 | RSTPD | input | Reset and power-down input: a high level resets the internal circuits, stops the oscillator and isolates internal inputs from the external circuit, and a falling edge triggers the internal reset sequence. |
| 24 | OSCOUT | output | Crystal oscillator output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FUDAN MICRO |
| Package | SOIC-24-300mil |
| Category | RF And Wireless |
| Pins | 24 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Storage temperature | Tamb,abs | -40 | 150 | °C | 103 | ||
| DC supply voltage | DVDD, AVDD, TVDD | -0.5 | 6 | V | 103 | ||
| Absolute voltage on all digital pins | Vin,abs | -0.5 | V | all digital pins to DVSS | 103 | ||
| Absolute voltage on RX pin | VRX,abs | -0.5 | V | RX pin to AVSS | 103 | ||
| Ambient temperature | Tamb | -25 | 25 | 85 | °C | 103 | |
| Digital circuit supply voltage (DVDD) | DVDD | 4.5 | 5 | 5.5 | V | DVSS = AVSS = TVSS = 0V | 103 |
| Supply voltage row without printed symbol (3.0 / 3.3 / 3.6) | 3 | 3.3 | 3.6 | V | 103 | ||
| Analog circuit supply voltage | AVDD | 3 | 3.3 | 3.6 | V | DVSS = AVSS = TVSS = 0V | 103 |
| Transmit circuit supply voltage | TVDD | 3 | 5 | 5.5 | V | DVSS = AVSS = TVSS = 0V | 103 |
| Digital circuit current, Idle command | IDVDD | 6 | 9 | mA | Idle 指令 | 104 | |
| Digital circuit current, Stand By mode | IDVDD | 3 | 5 | mA | Stand By 模式 | 104 | |
| Digital circuit current, Soft Power Down mode | IDVDD | 800 | 1000 | µA | Soft Power Down 模式 | 104 | |
| Digital circuit current, Hard Power Down mode | IDVDD | 1 | 10 | µA | Hard Power Down 模式 | 104 | |
| Analog circuit current, Idle command, receiver on | IAVDD | 25 | 40 | mA | Idle 指令, 接收器打开 | 104 | |
| Analog circuit current, Idle command, receiver off | IAVDD | 8 | 12 | mA | Idle 指令, 接收器关闭 | 104 | |
| Analog circuit current, Stand By mode | IAVDD | 6.5 | 9 | mA | Stand By 模式 | 104 | |
| Analog circuit current, Soft Power Down mode | IAVDD | 1 | 10 | µA | Soft Power Down 模式 | 104 | |
| Analog circuit current, Hard Power Down mode | IAVDD | 1 | 10 | µA | Hard Power Down 模式 | 104 | |
| Transmit circuit current, continuous carrier | ITVDD | 150 | mA | 发射连续载波 | 104 | ||
| Transmit circuit current, TX RF enabled | ITVDD | 4.5 | 6 | mA | TX1 TX2 悬空, TX1RFEn, TX2RFEn= 1 | 104 | |
| Transmit circuit current, TX RF disabled | ITVDD | 65 | 130 | µA | TX1 TX2 悬空, TX1RFEn, TX2RFEn= 0 | 104 |
CAD (KiCad official)
- Symbol:
FM1702SL - Footprint:
Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm - 3D model: SOIC-24-300mil (KiCad packages3D, STEP)
- 3D model files:
fm1702sl-etched.step/fm1702sl-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fm1702sl.step/fm1702sl.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FUDAN MICRO datasheet (110 pp, sha256
7d98db131605935d, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).