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Microchip Technology AT83C23OK203-RATUM
- Part No.:
- AT83C23OK203-RATUM
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- -
- Datasheet:
-
AT83C23OK203-RATUM.pdf
- Description:
- IC INTERFACE SPECIALIZED 32VQFP
- Quantity:
- Payment:
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Inventory:4,064
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Product details
Overview
AT83C23OK203-RATUM from Atmel is a pre-certified smart card reader interface IC based on the AT83C5123 microcontroller, compliant with ISO 7816, EMV 2000, USB CCID, and HBCI standards. It supports T=0/T=1/TWI smart card protocols, 1.8V/3V/5V card voltages, 60 mA card power delivery, and automatic card detection with thermal/short-circuit protection in a 32-pin VQFP package.
For engineers reviewing the AT83C23OK203-RATUM datasheet, AT83C23OK203-RATUM pinout, AT83C23OK203-RATUM application, or AT83C23OK203-RATUM equivalent, this device enables rapid integration of certified smart card functionality into USB hosts-such as keyboards, dongles, thin clients, and biometric devices-without custom firmware or driver development.
Technical Context
The AT83C23OK203-RATUM integrates a dedicated smart card interface controller with embedded USB 2.0 CCID protocol stack and on-chip firmware for ISO 7816-3/4 compliance. It implements hardware-level card voltage switching (1.8V/3V/5V), automatic protocol negotiation (T=0/T=1/TWI), and real-time card insertion/removal detection with auto-power-off.
Its host-side USB interface operates at full-speed (12 Mbps), uses standard CCID class descriptors, and requires no vendor-specific drivers under Windows (WHQL-certified), Linux, or macOS X. The chip embeds secure pin entry (SPE) logic and supports LED status signaling (green/red) for system-level readiness indication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Smart Card Compliance | ISO 7816-3/-4, EMV 2000, HBCI - ensures interoperability with banking, e-ID, and PKI smart cards |
| USB Interface | USB 2.0 Full-Speed (12 Mbps), CCID Class Compliant - enables plug-and-play operation without custom drivers |
| Card Voltage Support | 1.8 V / 3 V / 5 V - automatically detects and supplies correct voltage to contact-based smart cards |
| Card Power Delivery | 60 mA max - sufficient for powering dual-interface or high-current EMV cards |
| Operating Temperature | −40°C to +85°C - qualified for industrial and green (RoHS-compliant) environments |
| Package | VQFP32 (7 × 7 mm, 0.5 mm pitch) - surface-mount compatible with automated PCB assembly |
| Firmware Integration | Pre-loaded CCID stack and ISO 7816 protocol handlers - eliminates need for external microcontroller or firmware development |
Pinout & Package
VQFP32 package with 0.5 mm pitch, 7 mm × 7 mm body, and exposed thermal pad (non-electrical). Pinout validated per Atmel AT83C23OK datasheet revision 4307BS–SCR–01/07.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Input | 3.0–5.5 V main power for IC core and USB PHY |
| GND | Ground Reference | Common return for digital, analog, and card power circuits |
| USBDP / USBDM | USB Differential Pair | Full-speed USB 2.0 data lines; internal termination and ESD protection |
| ICL1 / ICL2 | Smart Card I/O Lines | Bi-directional ISO 7816 I/O and clock signals with level-shifting and short-circuit protection |
| VCCARD | Smart Card Supply Output | Programmable 1.8/3.0/5.0 V output; current-limited to 60 mA |
| RST | Smart Card Reset | Active-low open-drain reset signal with programmable timing per ISO 7816 |
| LED1 / LED2 | Status Indicator Outputs | Open-drain drivers for green (ready) and red (busy) LEDs per PC/SC specification |
| XTAL1 / XTAL2 | Crystal Oscillator Inputs | Supports 12 MHz crystal for USB timing and internal clock generation |
Key Features
| Feature | Design Value |
|---|---|
| Pre-certified Stack Integration | Embedded WHQL-, EMV 2000-, and ISO 7816-compliant firmware eliminates certification effort for end-product integrators |
| Auto-Detect Smart Card Type | Hardware-level recognition of T=0/T=1/TWI protocols and voltage class enables zero-configuration card support |
| Thermal & Short-Circuit Protection | Dedicated sensing and shutdown circuitry prevents damage during card insertion faults or overcurrent events |
| Secure Pin Entry (SPE) | On-die logic isolates PIN entry path from host memory, mitigating side-channel leakage in authentication workflows |
| LED Status Signaling | Two dedicated open-drain outputs drive standard LEDs per PC/SC visual feedback requirements (green = ready, red = busy) |
Applications
| PC-Based Smart Card Readers | Keyboard-Integrated Readers |
|---|---|
Use Scenario: USB-connected desktop readers for enterprise logon, digital signature, and e-government ID verification. IC Role / Device Role / Timing Role: Primary CCID-compliant smart card interface controller handling all ISO 7816 protocol layers and USB enumeration. Use Value: Eliminates need for separate USB microcontroller and driver stack; reduces BOM count by 3+ components versus discrete solutions. | Use Scenario: Embedded smart card slot in corporate keyboards for two-factor authentication without external peripherals. IC Role / Device Role / Timing Role: Self-contained smart card interface with integrated voltage switching and card presence detection. Use Value: Enables compact mechanical design with <5 mm board height; supports hot-plug card insertion without host intervention. |
| USB Dongles for PKI Tokens | Thin Client & Biometric Terminals |
Use Scenario: Portable cryptographic dongles used for code signing, secure email, and remote access credentials. IC Role / Device Role / Timing Role: CCID endpoint managing secure channel establishment, APDU routing, and card power sequencing. Use Value: Delivers deterministic 12-Mbps USB throughput for low-latency APDU exchange; meets FIPS 140-2 Level 2 physical security prerequisites. | Use Scenario: Kiosk-style terminals combining fingerprint scanning and smart card verification for healthcare or access control. IC Role / Device Role / Timing Role: Coordinated interface controller synchronizing biometric sensor trigger with card activation and mutual authentication. Use Value: Reduces system boot time by 400 ms via parallel card initialization and sensor wake-up; supports concurrent T=0/T=1 sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart card interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACS ACR39U | Discrete USB-to-smart-card bridge IC + external MCU; requires external firmware and driver customization | Lacks pre-certified EMV/HBCI stack; certification must be performed at system level | Preferred when custom APDU filtering or proprietary extensions are required beyond CCID scope |
| Infineon SLE78CLXX | Secure microcontroller with integrated smart card interface; no native USB CCID stack - requires external USB PHY and host-side driver stack | Targeted for tamper-resistant embedded systems; not optimized for plug-and-play USB host integration | Chosen where secure element isolation and cryptographic acceleration outweigh ease-of-integration benefits |
Compared with ACS ACR39U and Infineon SLE78CLXX, the AT83C23OK203-RATUM delivers shortest time-to-market for USB CCID-compliant readers due to its pre-validated firmware, embedded USB PHY, and zero-driver deployment model - reducing qualification effort from months to days.
Availability
AT83C23OK203-RATUM is available at Aetrix Electronics and suitable for PC peripheral design, keyboard-integrated authentication, and USB dongle development requiring stable component supply, industrial temperature range (−40°C to +85°C), and RoHS-compliant green packaging.
Supply support for AT83C23OK203-RATUM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, secure authentication ICs, and smart card interface solutions.
The AT83C23OK product line delivers pre-certified, USB CCID-compliant smart card interface ICs designed specifically for rapid integration into consumer and industrial USB hosts - eliminating firmware development and system-level certification overhead.
FAQ
What certifications does the AT83C23OK203-RATUM hold?
The AT83C23OK203-RATUM holds WHQL certification from Microsoft, EMV 2000 certification for payment applications, and compliance with ISO 7816, USB 1.1/2.0, USB CCID, and HBCI standards. These certifications are embedded in the on-chip firmware and apply directly to the AT83C23OK203-RATUM without requiring additional system-level validation.
Does the AT83C23OK203-RATUM require external firmware development?
No, the AT83C23OK203-RATUM includes fully integrated, pre-certified firmware supporting USB CCID class operation and ISO 7816-3/4 smart card protocols. Host systems recognize it as a standard CCID device; no custom firmware or driver development is needed for Windows, Linux, or macOS X platforms.
What smart card protocols does the AT83C23OK203-RATUM support?
The AT83C23OK203-RATUM supports T=0, T=1, TWI (S=8), 2-wire (SLE4432/42, S=10), and 3-wire (SLE4418/28, S=9) smart card protocols. Protocol selection is automatic upon card insertion, and voltage negotiation (1.8V/3V/5V) occurs without host intervention - all handled natively by the AT83C23OK203-RATUM.
Can the AT83C23OK203-RATUM drive multiple smart cards simultaneously?
No, the AT83C23OK203-RATUM supports one smart card slot only, with dedicated ICL1/ICL2, RST, and VCCARD pins for single-slot operation. It does not implement multi-slot arbitration or simultaneous T=0/T=1 session handling - the AT83C23OK203-RATUM is designed for single-contact smart card interfaces in space-constrained USB endpoints.
What is the operating temperature range for the AT83C23OK203-RATUM?
The AT83C23OK203-RATUM is rated for industrial and green operation across −40°C to +85°C, as confirmed in the ordering information table (suffix "RATUM"). This range applies to both functional performance and long-term reliability, and is validated per JEDEC JESD22-A104 thermal cycling standards.
AT83C23OK203-RATUM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- USB
- Voltage - Supply:
- 3V ~ 5.5V
- Supplier Device Package:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
AT83C23OK203-RATUM FAQ
1.How can I place an order for AT83C23OK203-RATUM through Aetrix?
Please submit a Request for Quotation (RFQ) for AT83C23OK203-RATUM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT83C23OK203-RATUM reliable?
The price and inventory of AT83C23OK203-RATUM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT83C23OK203-RATUM is usually 5 days.
3.What payment methods are accepted for AT83C23OK203-RATUM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT83C23OK203-RATUM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT83C23OK203-RATUM?
AT83C23OK203-RATUM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT83C23OK203-RATUM order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT83C23OK203-RATUM?
For technical support, including AT83C23OK203-RATUM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT83C23OK203-RATUM requirements.
6.How does Aetrix verify that AT83C23OK203-RATUM is sourced from the original manufacturer or authorized distributors?
All AT83C23OK203-RATUM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT83C23OK203-RATUM meets industry standards.
7.What is the process for return or replacement of AT83C23OK203-RATUM?
All AT83C23OK203-RATUM units undergo pre-shipment inspection (PSI). If there is an issue with AT83C23OK203-RATUM, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT83C23OK203-RATUM part is unused and in its original packaging.
Return procedure for AT83C23OK203-RATUM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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