A locally designed and manufactured NFC reader module for EV chargers, identification, authentication and embedded contactless applications.
Reduce dependence on imported NFC modules while gaining local engineering support, domestic sourcing and a clear path from prototype to production.
Localize the NFC Interface in Your EV Charger
Many EV charger manufacturers depend on imported NFC reader modules for card interaction and contactless workflows. That works, but it ties a charger BOM to import lead times, forex exposure, customs handling and a support relationship conducted across time zones. AmbiTap gives Indian OEMs a locally manufactured alternative backed by Ambimat engineering support.
Made in India
The module is designed and manufactured in India, so the NFC interface in your charger is sourced domestically rather than imported.
Local Engineering Support
Work directly with an Indian engineering team during integration, in your timezone, on your schedule.
INR Procurement
Purchase in rupees with GST invoicing and domestic logistics, without the forex and customs overhead of an imported line item.
OEM Ready
Built for integration into chargers and embedded products, with scope for volume and OEM discussions as a programme scales.
Product snapshot
The figures below are the module-level specifications Ambimat has confirmed from its own design documentation. Parameters that have not yet been characterised for the assembled module are deliberately absent rather than estimated.
| Parameter | AmbiTap NFC Reader Module |
|---|---|
| NFC frontend | NXP CLRC66303HNY |
| PCB dimensions | 42 mm × 42 mm |
| VDD | 2.5 V to 5.5 V |
| PVDD | 2.5 V to VDD |
| TVDD | 2.5 V to 5.5 V |
| Host interface signals | SPI / UART / I²C-style multifunction signals exposed |
| Control signals | IRQ and PDOWN exposed |
| Supply connections | 5 V and 3.3 V available on board connectors |
| Manufacturing | India |
Read range, current consumption, assembled-module temperature range, ESD and EMC behaviour and regulatory status are under characterisation and are not published here. Ask us where a specific parameter matters to your design and we will tell you what has been measured.
Designed to integrate with your host controller
AmbiTap exposes the host-control and communication signals needed to connect the NFC frontend to a charger controller or embedded host.
Host interface connector
| Pin | Signal | Type |
|---|---|---|
| 1 | 5 V | Power |
| 2 | PDOWN | Control |
| 3 | MOSI / RX | Data |
| 4 | SCK / SCL | Data |
| 5 | MISO / TX | Data |
| 6 | SSEL / SDA | Data |
| 7 | IRQ | Control |
| 8 | NC | Not connected |
| 9 | 3.3 V | Power |
| 10 | GND | Ground |
Multifunction signal usage depends on the selected host interface and system configuration. The pin names above show the alternate functions carried on each line; which set applies is determined by the interface you select and the firmware configuration on the host side.
A contactless interface for the charging experience
In a charger, the reader is the point where a driver’s credential meets your system. AmbiTap is the contactless hardware at the front of that sequence; the identification, authorisation and session logic stay in your controller and back end.
Tap
AmbiTap hardware
Identify
or authenticate
Authorise
Your policy
Start charging
Session begins
Payment workflows require the appropriate certified payment, security and acquiring architecture around the reader hardware. AmbiTap supplies the NFC reader hardware within that architecture; it is not by itself a certified payment terminal.
Where it is used
EV chargers
The contactless interface inside an AC or DC charger, where a driver taps a card, tag or credential to begin a session.
Charging kiosks
Shared or forecourt kiosks that identify a user before routing them to a charging bay.
Industrial equipment
Machine access, operator identification and shift handover on production equipment.
Access control
Door controllers, gates and restricted-area readers in embedded installations.
Authentication terminals
Identity and attendance terminals where a credential is presented to a fixed reader.
Vending and self-service
Unattended machines that need a contactless interaction before dispensing or unlocking.
More than a module supplier
Ambimat has been designing and manufacturing embedded electronics since 1982, including a long-standing NFC, UHF and RFID design practice. For an OEM programme, the module is usually the smallest part of the problem — the work is in the integration, the enclosure, the antenna environment and getting a repeatable build. That is the part we expect to be involved in.
Depending on the programme, support can include hardware integration guidance, host-interface selection, antenna and RF engineering discussion, connector and form-factor changes for qualified OEM opportunities, prototype-to-production support, and domestic manufacturing and volume commercial discussions. Design changes are considered on a per-programme basis after technical review rather than offered as an off-the-shelf entitlement.
The same hardware design and testing discipline used for customer programmes is what stands behind the module.
Currently importing an NFC reader module?
If your charger currently uses an imported CLRC663-based reader module, Ambimat can review your existing electrical interface, mechanical constraints, host interface and software integration requirements, and assess the migration path to AmbiTap.
We will not tell you it is a drop-in part before we have looked at yours. Pin assignment, mechanical fit and firmware behaviour differ between modules, and compatibility is something to establish against your specific incumbent hardware rather than assume. Send us the module you use today and the constraints around it, and we will give you a straight assessment of what a migration would involve.
Need pinout, power and integration details?
The AmbiTap NFC Reader Module preliminary datasheet covers the connector pinout, power rails, host integration guidance and mechanical outline. It is published at Revision 0.9: the specifications it carries are the ones Ambimat has confirmed for the module, and the parameters still under characterisation are listed in it rather than estimated. Ask our engineering team where a specific parameter matters to your design.
Frequently asked questions
Is AmbiTap made in India?
Yes. AmbiTap is designed and manufactured in India by Ambimat for OEM and embedded applications.
Is AmbiTap intended for EV chargers?
EV charging is one of the primary applications. The module can also be considered for other embedded NFC and contactless systems.
Which NFC controller is used?
The module is based on NXP’s CLRC66303HNY NFC frontend.
What host interfaces are available?
The hardware exposes multifunction signals corresponding to SPI, UART and I²C-style host connectivity. The actual interface used depends on system configuration and firmware.
What is the module size?
The PCB measures 42 mm × 42 mm.
Can AmbiTap replace the CLRC663 module we currently import?
Ambimat can review the existing module’s electrical, mechanical and software interfaces and assess the migration path. Compatibility should be verified before treating any module as a drop-in replacement.
Can the module be used for tap-and-pay?
AmbiTap can provide the NFC and contactless reader hardware within a payment-enabled system. Payment acceptance and certification depend on the complete terminal architecture, software, security implementation and acquiring or payment ecosystem used by the OEM.
Can Ambimat support OEM quantities?
Yes. OEM and volume requirements can be discussed directly with Ambimat.
Is customisation possible?
Connector, mechanical, RF or other design changes may be considered for qualified OEM and volume programmes after technical review.
Can I buy the module online?
Online INR purchasing is planned. Until the commercial launch is complete, please contact Ambimat for evaluation and OEM requirements.
Talk to the engineering team
Tell us what you are building, the host controller you are integrating with and the constraints you are working inside — mechanical, electrical or commercial. You will get an engineer, not a form response.