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Microchip Technology AT83C21GC144-ICSUL
- Part No.:
- AT83C21GC144-ICSUL
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- -
- Datasheet:
-
AT83C21GC144-ICSUL.pdf
- Description:
- IC INTERFACE SPECIALIZED 24SSOP
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Product details
Overview
AT83C21GC144-ICSUL from Atmel (now Microchip) is a smart card interface controller IC that manages electrical and protocol-level communication between host processors and ISO/IEC 7816-1/2/3/4-compliant contact smart cards. It supports T=0/T=1 asynchronous cards, synchronous/memory cards with command interpreters, and EMV/non-EMV cards. Key confirmed parameters include 9.6–115 kbps transmission speed, programmable 1.8V/3V/5V card power supply, and 4 kV HBM ESD protection on card pins - deployed in secure payment terminals and ID authentication readers.
For engineers reviewing the AT83C21GC144-ICSUL datasheet, AT83C21GC144-ICSUL pinout, AT83C21GC144-ICSUL application, or AT83C21GC144-ICSUL equivalent, this page delivers verified package mapping (SSOP24), UART-based host interface details, Gemplus Block Protocol (GBP) support, LED driver capability, and industrial-grade operating range (0°C to +70°C).
Technical Context
The AT83C21GC144-ICSUL integrates a dedicated smart card interface engine with embedded GBP protocol stack and on-chip voltage regulators for card power (CVCC), digital core (DVCC), and UART level-shifting (EVCC). It implements hardware-assisted card presence detection (CPRES), reset control (CRST), clock generation (CCLK), and I/O management (CIO) per ISO 7816-3 timing requirements.
Its dual-supply architecture separates card interface (CVCC/CVSS) from host-side logic (DVCC/EVCC/VCC), enabling independent voltage scaling and noise isolation. The device supports software-configurable LED drive current (2/4/10 mA) via LEDCON register and enters low-power mode with ≤100 µA standby current upon host command.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Smart Card Standards | ISO/IEC 7816-1/2/3/4, EMV 2000, CB, Mondex®, Proton, ZKA - ensures interoperability with global banking and ID card systems. |
| Card Interface Speed | 9.6 kbps to 115 kbps - covers full ISO 7816-3 asynchronous transfer range including EMV high-speed modes. |
| Card Supply Voltage | Programmable 1.8 V / 3 V / 5 V - enables single design to support legacy and modern smart cards without external LDO switching. |
| Host Interface | UART (8N1), 1.2–115.2 kbps - simplifies integration with microcontrollers lacking native smart card peripherals. |
| ESD Protection | 4 kV HBM on all card-contact pins (CIO, CC4, CC8, CRST, CPRES) - meets IEC 61000-4-2 Level 3 for field-deployed readers. |
| Operating Temperature | 0°C to +70°C - validated for industrial indoor terminal environments (e.g., point-of-sale, access control panels). |
| Power Consumption | 8 mA typical active, ≤100 µA in power-down - extends battery life in portable card readers during idle periods. |
Pinout & Package
AT83C21GC144-ICSUL is packaged in 24-pin SSOP (Shrink Small Outline Package) with 0.635 mm pitch, RoHS-compliant and green (lead-free) construction. Pin functions are electrically isolated across CVCC, DVCC, EVCC, and VCC domains to minimize noise coupling between card interface and host logic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0 / CIO | Smart Card I/O | Bidirectional data line for T=0/T=1 protocols; internal pull-up <20 kΩ enables direct connection to card contact C7. |
| P1.1 / CC8 | Smart Card Contact 8 | Connects to card contact C8; 4 kV HBM ESD protection ensures robustness against insertion/removal transients. |
| P1.2 / CPRES | Card Presence Detection | Active-high input indicating mechanical card insertion; used by firmware to trigger initialization sequence. |
| P1.4 / CCLK | Smart Card Clock Output | Generates ISO 7816-3 compliant clock signal (1–5 MHz); frequency set via host command and internal divider. |
| P1.5 / CRST | Smart Card Reset Output | Drives card contact C6; open-drain output with <20 kΩ pull-up supports standard reset timing (400–40,000 cycles). |
| P3.0 / RxD | UART Receive Input | Accepts host commands at configurable baud rates; referenced to EVCC for level-shifted 3.3V/5V compatibility. |
| P3.1 / TxD | UART Transmit Output | Drives host UART RX line; EVCC-referenced output eliminates need for external level translators. |
| P3.6 / CCLK1 / LED0 | LED Driver Output | Direct-drive cathode output; software-selectable 2/4/10 mA current enables status indication without external resistors. |
| RST | Device Reset Input | Active-low reset requiring ≥64 oscillator cycles; internal pull-up allows capacitor-based power-on reset circuit. |
| CVCC | Card Voltage Output | Programmable 1.8/3/5 V supply for card; requires external 1 µF decoupling capacitor to maintain stability under load. |
Key Features
| Feature | Design Value |
|---|---|
| Gemplus Block Protocol (GBP) Engine | On-chip hardware-accelerated GBP implementation eliminates host CPU overhead for block-level command framing and error recovery. |
| Multi-Voltage Card Power | Single-pin programmable CVCC output supports 1.8 V / 3 V / 5 V smart cards without external voltage-switching circuitry. |
| Integrated LED Driver | Dedicated P3.6/P3.7 outputs deliver precise 2/4/10 mA current to LEDs - removes need for current-limiting resistors and saves PCB space. |
| Hardware Card Presence Detection | CPRES pin provides deterministic mechanical insertion sensing - enables immediate card initialization without polling delays. |
| Isolated Power Domains | Separate CVCC, DVCC, EVCC, and VCC supplies prevent noise coupling between card interface, digital core, and UART I/O paths. |
Applications
| Payment Terminal | Government ID Reader |
|---|---|
Use Scenario: Embedded in countertop or portable POS devices processing EMV chip-and-PIN transactions. IC Role / Device Role / Timing Role: Smart card interface controller managing T=0/T=1 protocol, card power sequencing, and reset timing per ISO 7816-3. Use Value: Enables certified EMV Level 1 compliance with minimal host firmware effort via GBP library integration. |
Use Scenario: Integrated into national eID card readers used at border control or civil registration offices. IC Role / Device Role / Timing Role: Secure contact interface handling PKI-based authentication with ISO/IEC 7816-4 APDU exchange. Use Value: Supports mandatory CB and ZKA standards while providing 4 kV ESD protection for high-insertion-volume public kiosks. |
| Secure Access Control | Healthcare Smart Card System |
Use Scenario: Deployed in door controllers verifying employee credentials stored on contact smart cards. IC Role / Device Role / Timing Role: Card interface managing asynchronous communication, presence detection, and LED status feedback. Use Value: Reduces BOM count via integrated LED drivers and eliminates external level shifters for UART host link. |
Use Scenario: Used in hospital bedside terminals reading patient health insurance cards compliant with national healthcare schemes. IC Role / Device Role / Timing Role: Dual-voltage card interface supporting legacy 5 V and modern 1.8 V health cards with automatic voltage detection. Use Value: Ensures backward compatibility across multi-generation card deployments without hardware redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart card interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SLB9670 | TPM 2.0-certified secure element with integrated smart card interface; lacks dedicated LED drivers and GBP protocol stack. | Targeted at trusted platform modules requiring cryptographic acceleration; not optimized for high-throughput card reader throughput. | Choose SLB9670 only when TPM functionality and hardware-based key storage are required alongside basic card interface. |
| SC16IS752 | I²C-to-UART bridge with GPIOs; no built-in smart card protocol engine, voltage regulation, or ISO 7816 timing control. | Requires full host-side implementation of ISO 7816-3 timing, card power control, and reset sequencing - increases firmware complexity. | Choose SC16IS752 only if existing host MCU has sufficient resources to implement full smart card stack and external power management. |
Compared with SLB9670 and SC16IS752, the AT83C21GC144-ICSUL delivers turnkey ISO 7816 compliance with minimal host intervention, integrated card power switching, and hardware-accelerated GBP - reducing time-to-certification for payment and ID readers by eliminating custom protocol development.
Availability
AT83C21GC144-ICSUL is available at Aetrix Electronics and suitable for payment terminals, government ID readers, secure access control systems, and healthcare smart card readers requiring stable component supply and long-term industrial availability.
Supply support for AT83C21GC144-ICSUL 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, designs high-performance microcontrollers, nonvolatile memory, and security ICs for industrial, automotive, and consumer applications.
The AT83C21GC product line was developed specifically to reduce design complexity in ISO 7816-compliant smart card readers - integrating protocol handling, voltage regulation, and card interface logic into a single IC for rapid certification and deployment.
FAQ
What smart card standards does the AT83C21GC144-ICSUL support?
The AT83C21GC144-ICSUL supports ISO/IEC 7816-1, -2, -3, and -4, EMV 2000, CB, Mondex®, Proton, and ZKA standards. It handles both T=0 and T=1 asynchronous protocols and synchronous/memory cards using a command interpreter. These capabilities are confirmed in the official Atmel datasheet 4247DS–SCR–03/07 and enable interoperability with global banking and national ID card systems.
Does the AT83C21GC144-ICSUL support multiple smart card voltages?
Yes, the AT83C21GC144-ICSUL provides programmable card supply voltage (CVCC) at 1.8 V, 3 V, or 5 V - selected via host command. This eliminates the need for external voltage-switching circuitry and allows a single hardware design to support legacy and modern smart cards. The specification is verified in the "Electrical Interface" section of the datasheet.
What is the host interface type and configuration for the AT83C21GC144-ICSUL?
The AT83C21GC144-ICSUL uses a serial asynchronous UART interface (P3.0/RxD and P3.1/TxD) with programmable baud rates from 1.2 kbps to 115.2 kbps, 8 data bits, no parity, and 1 stop bit. Signal voltage is adjustable via EVCC reference, enabling compatibility with 3.3 V or 5 V host systems without level shifters.
How does the AT83C21GC144-ICSUL handle LED status indication?
The AT83C21GC144-ICSUL includes two dedicated LED driver outputs (P3.6/LED0 and P3.7/LED1) capable of delivering 2 mA, 4 mA, or 10 mA current - configured via the LEDCON register. Each output connects directly to an LED cathode without external current-limiting resistors, simplifying board layout and reducing component count.
What is the operating temperature range for the AT83C21GC144-ICSUL?
The AT83C21GC144-ICSUL is rated for industrial operation from 0°C to +70°C, as specified in the Ordering Information table of the datasheet. While the device can function down to –40°C, the 0°C to +70°C range is the validated and guaranteed specification for the AT83C21GC144-ICSUL variant with SSOP24 packaging and green compliance.
AT83C21GC144-ICSUL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- Serial
- Voltage - Supply:
- 2.85V ~ 5.4V
- Supplier Device Package:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
AT83C21GC144-ICSUL FAQ
1.How can I place an order for AT83C21GC144-ICSUL through Aetrix?
Please submit a Request for Quotation (RFQ) for AT83C21GC144-ICSUL 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 AT83C21GC144-ICSUL reliable?
The price and inventory of AT83C21GC144-ICSUL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT83C21GC144-ICSUL is usually 5 days.
3.What payment methods are accepted for AT83C21GC144-ICSUL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT83C21GC144-ICSUL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT83C21GC144-ICSUL?
AT83C21GC144-ICSUL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT83C21GC144-ICSUL 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 AT83C21GC144-ICSUL?
For technical support, including AT83C21GC144-ICSUL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT83C21GC144-ICSUL requirements.
6.How does Aetrix verify that AT83C21GC144-ICSUL is sourced from the original manufacturer or authorized distributors?
All AT83C21GC144-ICSUL 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 AT83C21GC144-ICSUL meets industry standards.
7.What is the process for return or replacement of AT83C21GC144-ICSUL?
All AT83C21GC144-ICSUL units undergo pre-shipment inspection (PSI). If there is an issue with AT83C21GC144-ICSUL, 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 AT83C21GC144-ICSUL part is unused and in its original packaging.
Return procedure for AT83C21GC144-ICSUL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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