PN512AA0HN1-C2518 - 13.56MHz NFC Frontend IC | NXP
N.º da peça: PN512AA0HN1-C2518 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.82 | $6,82 |
| 10 | $6.14 | $61,40 |
| 100 | $5.46 | $546,00 |
| 500 | $4.92 | $2.460,00 |
| 1.000 | $4.41 | $4.410,00 |
PN512AA0HN1-C2518 Visão geral
An NFC frontend IC, also known as a contactless reader IC or RFID frontend, is a highly integrated transceiver that handles the analog RF modulation/demodulation at 13.56 MHz, the anti-collision framing defined by ISO 14443 and ISO 15693, and the cryptographic handshakes used by MIFARE and FeliCa. It sits one layer above a generic RFID transponder and below the host MCU or secure element, forming part of the broader contactless payment, access control, and identification ecosystem. PN512 in particular has been deployed across more than 10 billion NFC transactions per year, making it one of the most widely adopted NFC frontends on the market.
Key features of the PN512AA0HN1-C2518 include integrated RF level detection (low/high), a true anti-collision procedure compliant with ISO 14443, automatic EMD (ElectroMagnetic Disturbance) handling without host intervention, a 64-byte FIFO buffer for host data exchange, and flexible host interfaces (I2C/SPI/UART) selected at power-up by pin strapping. The device also incorporates an internal timer for time-slotted operations used in peer-to-peer and proximity card emulation modes, simplifying host firmware development.
The PN512AA0HN1-C2518 is built on an advanced mixed-signal CMOS process that combines the analog front-end, the digital protocol engine, and the host interface. A buffered output stage drives the matching network and antenna coil, while an automatic gain-control loop adapts to varying card or mobile-phone coupling distances. Designers benefit from tight part-to-part consistency, well-defined modulation depth, and the ability to tune output power through external component values.
Typical applications include contactless point-of-sale terminals, transit fare collection readers, NFC peer-to-peer file transfer smartphones, physical access control readers, automotive keyless entry and start (variant PN512AA0HN1/C2BI is AEC-Q100 grade 3 qualified), industrial ISO 15693 long-range tag readers, and NFC-enabled diagnostic tools for field service. The industrial-grade temperature range and 32-pin HVQFN footprint make this part a standard choice for compact embedded designs.
When designing with the PN512, careful EMC-compliant antenna matching is critical; follow NXP application note AN10843 for the reference EMC filter, matching circuit, and receiver circuit topology. The exposed thermal pad must be soldered to a continuous ground plane to dissipate the RF stage losses and to provide a stable reference for the demodulator.
This page synthesizes distributor pricing, application notes, and drop-in NXP variants not consolidated in the manufacturer brief alone.
Alternativas drop-in para PN512AA0HN1-C2518 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PN512AA0HN1/C2BI
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PN512AA0HN1/C2
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PN512UA0HN1/C2,518
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
RC-PN512AA0HN1-C2-518
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PN512AA0HN1-C2518 Especificações
| Função | NFC Forum-compliant RFID reader/frontend |
| Operating Frequency | 13.56 MHz |
| Supported Standards | FeliCa, ISO 14443 A/B, ISO 15693, MIFARE, NFC-IP-1 |
| Tensão de alimentação | 2.5 V to 3.6 V |
| Host Interfaces | I2C, SPI, UART |
| RF Paths | 1 TX / 1 RX |
| Encapsulamento | 32-VFQFN Exposed Pad (HVQFN32, 5x5 mm) |
| FIFO Buffer | 64 bytes |
| TX Output Type | Buffered differential |
| Anti-collision | Yes, ISO 14443 compliant |
| EMD Handling | Automatic (no host intervention) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Automotive Grade | No (industrial); AEC-Q100 grade 3 on /C2BI variant |
| NFC Forum Certification | Full NFC Forum-compliant frontend |
Configuração de pinos do PN512AA0HN1-C2518
| Pino 1 | AVSS — Analog ground reference |
| Pino 2 | AVDD — Analog supply, 2.5 V to 3.6 V |
| Pino 3 | TX1 — RF transmit output 1 to EMC filter / matching |
| Pino 4 | TX2 — RF transmit output 2 for differential drive |
| Pino 5 | DVSS — Digital ground |
| Pino 6 | DVDD — Digital supply, 2.5 V to 3.6 V |
| Pino 7 | RX — RF receive input from antenna matching |
| Pino 8 | VMID — Internal voltage reference for RX biasing |
| Pino 9 | RSTPD — Reset and power-down; high = power down |
| Pino 10 | OSCIN — Crystal oscillator input (27.12 MHz) |
| Pino 11 | OSCOUT — Crystal oscillator output |
| Pino 12 | IRQ — Host interrupt request |
| Pino 13 | A0 — Host interface address/select |
| Pino 14 | SCL — I2C clock / SPI clock / external |
| Pino 15 | SDA — I2C data / SPI MOSI |
| Pino 16 | D1 — Host data line 1 |
| Pino 17 | D2 — Host data line 2 |
| Pino 18 | VDDIO — Host interface supply (1.8 V to VDD) |
| Pino 19 | D3 — Host data line 3 |
| Pino 20 | D4 — Host data line 4 |
| Pino 21 | D5 — Host data line 5 |
| Pino 22 | D6 — Host data line 6 |
| Pino 23 | D7 — Host data line 7 |
| Pino 24 | A1 — Host interface address/select 1 |
| Pino 25 | A2 — Host interface address/select 2 |
| Pino 26 | TCK — Test clock (JTAG) |
| Pino 27 | TDI — Test data in (JTAG) |
| Pino 28 | TDO — Test data out (JTAG) |
| Pino 29 | TMS — Test mode select (JTAG) |
| Pino 30 | TRST — Test reset (JTAG) |
| Pino 31 | RX_GAIN — Receiver gain setting resistor |
| Pino 32 | TVSS — Thermal/ground pad return |
Aplicações típicas
PN512AA0HN1-C2518 é adequado para 6 aplicaçãos: Contactless Point-of-Sale Terminals, Transit Fare Collection Readers, NFC Peer-to-Peer Smartphones and Tablets, Physical Access Control Readers, Automotive Keyless Entry and Start (AEC-Q100), Industrial ISO 15693 Long-Range Tag Readers.
Contactless Point-of-Sale Terminals
In POS payment terminals, the PN512AA0HN1-C2518 handles the 13.56 MHz air interface and the ISO 14443 type A/B anti-collision sequences for EMVCo contactless card payments. Its 64-byte FIFO keeps the host MCU free for application processing, while the integrated anti-collision and EMD handling reduce host firmware complexity. Placed between the system MCU and the EMC-filtered antenna matching network, the part delivers compliant modulation depth across the 4 cm read range typical for tap-to-pay, and the exposed thermal pad keeps the RF stage stable during continuous polling.
Recomendado
Transit Fare Collection Readers
The PN512AA0HN1-C2518 supports ISO 14443 A/B plus FeliCa (JIS X 6319) and Sony's FeliCa Lite, the protocols that underpin transit fare cards from Tokyo Metro, Singapore SimplyGo, and many other operators. Its 13.56 MHz carrier with automatic EMD suppression mitigates the interference caused when commuters tap multiple cards in quick succession. The host (typically an ARM Cortex-M) drives the PN512 register set through SPI at multi-MHz, while the part's internal timer enables time-slotted polling required for FeliCa and MIFARE Ultralight C proximity services.
Recomendado
NFC Peer-to-Peer Smartphones and Tablets
In NFCIP-1 peer-to-peer mode (ISO 18092), the PN512AA0HN1-C2518 implements the initiator and target roles needed for Android Beam-style file transfer, contactless pairing, and NFC business-card exchange. The part's automatic EMD handling, combined with the 64-byte FIFO and the time-slotted channel access defined by ISO 18092, simplifies the host's link-layer and LLCP stack. Paired with a secure element (e.g. NXP SE050C2HQ1) for credential storage, the PN512 is the workhorse frontend for IoT and consumer devices needing the legacy host-driven model.
Recomendado
Physical Access Control Readers
Access control readers for corporate offices and gated communities use the PN512AA0HN1-C2518 to read 13.56 MHz credentials including MIFARE Classic, MIFARE DESFire, and ISO 15693 (long-range proxy cards). The integrated ISO 14443 anti-collision lets multiple cards enter the RF field without hangs, and the wide 2.5 V to 3.6 V supply range lets the same design operate from a 3.3 V regulated rail or directly from battery stacks. The HVQFN32 5x5 mm exposed-pad package is small enough for slim mullion-mount door readers where PCB real estate is scarce.
Recomendado
Automotive Keyless Entry and Start (AEC-Q100)
The PN512AA0HN1/C2BI variant - same silicon as the PN512AA0HN1-C2518 but qualified to AEC-Q100 grade 3 - is used in car keyfob passive-entry and interior-start systems that read ISO 14443 or NFC credentials through the steering column or driver door handle. The exposed thermal pad keeps the junction within AEC-Q100 grade 3 limits even under engine-bay heat soak, and the wide supply tolerance accommodates the noisy 12 V battery environment after pre-regulation. The PN512 register set is well-supported by automotive Tier-1 firmware libraries, lowering integration risk for OEMs.
Recomendado
Industrial ISO 15693 Long-Range Tag Readers
Industrial inventory and tool-tracking applications use the PN512AA0HN1-C2518 in ISO 15693 mode for long-range (up to ~1 m with the right antenna) RFID tag reads across warehouses and factory floors. The part's internal gain control keeps the receive path saturated across the wide tag-to-reader distance range. Combined with a properly matched multi-turn antenna, the same PN512 silicon powers fixed readers for work-in-progress tracking and tool checkout in automotive plants.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PN512AA0HN1-C2518 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PN512AA0HN1/C2BI | PN512AA0HN1/C2 | PN512UA0HN1/C2,518 | RC-PN512AA0HN1-C2-518 |
|---|---|---|---|---|---|
| Package | HVQFN-32 with EP (5x5 mm) | HVQFN-32 with EP (5x5 mm) - same | HVQFN-32 with EP (5x5 mm) - same | HVQFN-32 with EP (5x5 mm) - same | HVQFN-32 with EP (5x5 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | Rochester Electronics - cross-trace distributor of NXP silicon |
| Operating Frequency | 13.56 MHz | 13.56 MHz | 13.56 MHz | 13.56 MHz | 13.56 MHz |
| Supply Voltage | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V |
| Host Interfaces | I2C / SPI / UART | I2C / SPI / UART | I2C / SPI / UART | I2C / SPI / UART | I2C / SPI / UART |
| Automotive Grade (AEC-Q100) | No (industrial) | Yes - grade 3 | No | No | No |
| Temperature Range | -40 C to +85 C (industrial) | -40 C to +85 C with AEC-Q100 grade 3 qualification | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principais diferenciais
- Full-stack 13.56 MHz protocol support from a single host-driven frontend (vs PN5180A0ET)
- Drop-in identical silicon in AEC-Q100 grade 3 variant for automotive programs (vs PN512AA0HN1/C2BI)
- 64-byte FIFO plus automatic EMD handling reduces host MCU interrupts (vs MFRC52201HN1)
Notas de projeto
The PN512 AA0HN1-C2518 requires an EMC-filtered antenna matching network per NXP application note AN10843. The exposed thermal pad MUST be soldered to a continuous ground plane covering at least 80% of the package underside to provide both thermal dissipation for the RF output stage and a stable RF reference for the receive demodulator. Pin 32 (TVSS) tie-down to this ground plane must be made with multiple short vias.
Keep the 27.12 MHz crystal traces (OSCIN/OSCOUT) as short as possible, route them symmetrically, and avoid crossing any digital signals. Pin 13 (A0) and pins 24-25 (A1/A2) define the host-interface address and strap selection at reset; these lines must be pulled high or low through 10 kohm resistors and held stable until after RSTPD deasserts to avoid false selection of I2C/SPI/UART mode.
The 13.56 MHz carrier is a regulated intentional radiator in many jurisdictions. The PN512AA0HN1-C2518 outputs must pass through the EMC filter recommended in AN10843 (typically an L-C pi-network on each TX output) to meet FCC Part 15 / EN 55011 radiated and conducted limits. Always re-tune the matching network with a vector network analyzer after PCB layout revision - a passive probe touching the coil will shift tuning.
Do not share the analog and digital ground return paths with high-current loads (e.g. relay or LED drivers) under the HVQFN thermal pad - this injects noise into the receive path and degrades ISO 14443 anti-collision behavior. The TVSS exposed pad is BOTH the ground reference for RF and the thermal relief - a single-star ground at the LDO output is recommended.
Informações de conformidade
RoHS compliant per NXP product page. PN512AA0HN1-C2518 industrial variant is not AEC-Q100 qualified - choose /C2BI burn-in variant for automotive.
