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Contents

README

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FSV9522

Forsinve · RFID ICs · QFN-32(5x5)

FSV9522 from Forsinve, in a QFN-32(5x5). 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 I2C input I2C-bus enable input for selecting I2C interface mode
2 PVDD power_in Pin power supply, 1.6 to 3.6 V
3 DVDD power_in Digital power supply, 2.5 to 3.6 V
4 DVSS power_in Digital ground
5 PVSS power_in Pin power supply ground
6 NRSTPD input Reset and power-down input; power-down when LOW with oscillator disabled, reset enabled by positive edge
7 MFIN input MIFARE signal input for external antenna interface
8 MFOUT output MIFARE signal output for external active antenna interface
9 SVDD power_in MFIN and MFOUT pin power supply, 1.6 to 3.6 V
10 TVSS power_in Transmitter output stage 1 ground
11 TX1 output Transmitter 1 modulated 13.56 MHz carrier output for antenna driver
12 TVDD power_in Transmitter power supply for TX drivers, 2.5 to 3.6 V
13 TX2 output Transmitter 2 modulated 13.56 MHz carrier output for antenna driver
14 TVSS power_in Transmitter output stage 2 ground
15 AVDD power_in Analog power supply, 2.5 to 3.6 V
16 VMID power_in Internal analog reference voltage for demodulator
17 RX input RF signal input for Manchester encoded receive from ISO/IEC 14443 A cards
18 AVSS power_in Analog ground
19 AUX1 output Auxiliary test output; outputs test signals, DAC values, or signal conditions
20 AUX2 output Auxiliary test output; outputs test signals, DAC values, or signal conditions
21 OSCIN input Crystal oscillator inverting amplifier input or external 27.12 MHz clock input
22 OSCOUT output Crystal oscillator inverting amplifier output for crystal connection
23 IRQ output Interrupt request output; indicates interrupt events with configurable polarity and push-pull mode
24 SDA/NSS/RX bidirectional Multi-function interface pin: I2C SDA (I/O), SPI slave select NSS (I), or UART receive RX (I) depending on detected interface mode
25 D1/ADR_5 bidirectional Multi-function pin: test port D1 (I/O) or I2C-bus address 5 input/output
26 D2/ADR_4 bidirectional Multi-function pin: test port D2 (I/O) or I2C-bus address 4 input
27 D3/ADR_3 bidirectional Multi-function pin: test port D3 (I/O) or I2C-bus address 3 input
28 D4/ADR_2 bidirectional Multi-function pin: test port D4 (I/O) or I2C-bus address 2 input
29 D5/ADR_1/SCK/DTRQ bidirectional Multi-function pin: test port D5 (I/O), I2C address 1 (I/O), SPI serial clock SCK (I), or UART request to send DTRQ (O)
30 D6/ADR_0/MOSI/MX bidirectional Multi-function pin: test port D6 (I/O), I2C address 0 input, SPI master out slave in MOSI (I/O), or UART output MX (O)
31 D7/SCL/MISO/TX bidirectional Multi-function pin: test port D7 (I/O), I2C serial clock SCL (I/O), SPI master in slave out MISO (I/O), or UART transmit TX (O)
32 EA input External I2C-bus address configuration input; address latched immediately after reset release
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Forsinve
Package QFN-32(5x5)
Category RF And Wireless
Pins 33

CAD (KiCad official)

  • Symbol: FSV9522
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: QFN-32(5x5) (KiCad packages3D, STEP)
  • 3D model files: fsv9522-etched.step / fsv9522-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fsv9522.step / fsv9522.glb are the bare package body.

Provenance

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

  • Datasheet: Forsinve datasheet (88 pp, sha256 ba24952fcfc87247, retrieved 2026-09-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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