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Microchip Technology AT83C21GC144-PUTUL
- Part No.:
- AT83C21GC144-PUTUL
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- -
- Datasheet:
-
AT83C21GC144-PUTUL.pdf
- Description:
- IC INTERFACE SPECIALIZED GEMCORE
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Product details
Overview
AT83C21GC144-PUTUL from Atmel (now Microchip Technology) is a smart card interface controller IC that manages electrical signaling, protocol translation, and power delivery for 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. It delivers 1.8V/3V/5V programmable card supply, 9.6–115 kbps transmission speed, and ESD protection up to 4 kV HBM on card pins.
For engineers reviewing the AT83C21GC144-PUTUL datasheet, AT83C21GC144-PUTUL pinout, AT83C21GC144-PUTUL application, or AT83C21GC144-PUTUL equivalent, key selection criteria include QFN32 package compatibility, Gemplus Block Protocol (GBP) host interface support, dual-voltage card power control, LED driver capability (2/4/10 mA programmable), and industrial & green temperature range (−40°C to +85°C).
Technical Context
The AT83C21GC144-PUTUL integrates a dedicated smart card interface engine with on-chip voltage regulators (CVCC, DVCC, EVCC), DC/DC converter input (LI), and UART-based host communication. Its architecture separates card-side analog signaling (CIO, CCLK, CRST, CPRES, CC4, CC8) from digital host-side I/O (RxD/TxD, INT0/INT1, T0/T1), enabling robust isolation between card power domains and host logic levels.
It implements the Gemplus Block Protocol (GBP) in firmware, offloading protocol framing, error checking, and block-level handshaking from the host processor. The chip supports software-controlled power-down mode (≤100 µA), host-initiated power-up/down commands, and LED management via P3.6/P3.7 with internal current programming-eliminating external drivers or resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Smart Card Standards | Complies with ISO/IEC 7816-1/2/3/4, EMV 2000, CB, Mondex®, Proton, ZKA, and Gemplus® contact card protocols. |
| Card Supply Voltage | Programmable 1.8 V / 3 V / 5 V output (CVCC) - enables single-reader support for all common smart card voltage classes. |
| UART Host Interface | Asynchronous serial link, 1.2–115.2 kbps, 8N1 format, adjustable signal voltage - compatible with standard microcontroller UART peripherals. |
| ESD Protection | 4 kV HBM on all card-contact pins (CIO, CCLK, CRST, CPRES, CC4, CC8) - meets IEC 61000-4-2 Level 3 for field-deployed readers. |
| Operating Temperature | −40°C to +85°C (Industrial & Green grade) - qualified for uncontrolled environments including point-of-sale and transit terminals. |
| Power Consumption | 8 mA typical active current; ≤100 µA in power-down mode - extends battery life in portable or energy-sensitive applications. |
| LED Drive Capability | P3.6/P3.7 support 2/4/10 mA programmable sink current - drives standard LEDs directly without external current-limiting resistors. |
Pinout & Package
AT83C21GC144-PUTUL is housed in a 32-pin QFN (Quad Flat No-lead) package with 0.5 mm pitch, exposed thermal pad, and industrial & green compliance (lead-free, RoHS-compliant). The package supports automated assembly and provides low-inductance grounding via CVSS/VSS connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/CIO | Smart Card I/O | Bidirectional data line for T=0/T=1 protocols; pull-up <20 kΩ required; powered by CVCC. |
| P1.1/CC8 | Card Contact 8 | I/O for ISO 7816-2 contact 8; supports clock/data multiplexing; 4 kV HBM ESD rated. |
| P1.2/CPRES | Card Presence Detection | Active-high input indicating mechanical insertion; referenced to VCC; used for auto-wake and card event triggering. |
| P1.4/CCLK | Card Clock Output | Programmable clock generator (1–5 MHz) for asynchronous cards; driven by CVCC domain. |
| P1.5/CRST | Card Reset Output | Open-drain reset signal with <20 kΩ pull-up; controls card power-on reset sequence per ISO 7816-3. |
| P3.0/RxD | Host UART Receive | Input for GBP command frames from host; referenced to EVCC for level-shifting compatibility. |
| P3.1/TxD | Host UART Transmit | Output for GBP response frames to host; supports 1.2–115.2 kbps; EVCC-referenced for noise immunity. |
| P3.6/CCLK1/LED0 | LED Driver / Alternate Clock | Programmable 2/4/10 mA sink output; connects directly to LED cathode; eliminates external resistor. |
| P3.7/CRST1/LED1 | LED Driver / Alternate Reset | Second programmable LED sink; shares same current control register as P3.6; supports dual-status indication. |
| CVCC | Card Power Output | Regulated, programmable 1.8/3/5 V supply for smart card; requires external decoupling capacitor. |
| DVCC | Digital Core Supply | 3 V internal regulator output for digital logic; must be decoupled externally; powers P3.x and core registers. |
| EVCC | UART Level Shift Reference | Reference voltage for UART I/O level shifters; can be internal or external; ensures clean signal integrity. |
| LI | DC/DC Converter Input | Connects to external coil (4.7 µH); supplies current for internal charge pump generating CVCC. |
| VSS / CVSS | Ground Planes | VSS = digital ground; CVSS = high-current DC/DC return path - separate routing prevents noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Gemplus Block Protocol (GBP) Engine | Firmware-implemented protocol stack handles frame formatting, CRC, retransmission, and flow control - reduces host CPU overhead by >70% vs. bit-banged UART implementations. |
| Triple-Voltage Card Power Control | Single-pin configuration selects 1.8 V / 3 V / 5 V CVCC output - enables universal reader design supporting legacy and modern cards without hardware changes. |
| Integrated LED Drivers | P3.6 and P3.7 provide software-programmable 2/4/10 mA sink current - eliminates discrete transistors and current-limiting resistors, saving PCB area and BOM cost. |
| Hardware Card Presence Detection | CPRES input detects physical insertion/removal with debounced edge detection - triggers automatic card initialization or safe power-down without polling. |
| Low-Power Power-Down Mode | ≤100 µA standby current with full register retention - allows rapid wake-up (<100 µs) while meeting EN 55032 Class B emission limits in idle states. |
Applications
| POS Terminal Reader | Transit Fare Validator |
|---|---|
Use Scenario: Embedded in countertop payment terminals processing EMV chip-and-PIN transactions. IC Role / Device Role / Timing Role: Smart card interface controller managing ISO 7816-3/4 electrical signaling, T=0 protocol execution, and CVCC voltage switching between 3 V and 5 V cards. Use Value: Enables certified EMV Level 1 compliance with minimal host firmware effort due to integrated GBP and automatic card class detection. | Use Scenario: Integrated into handheld or fixed-mount transit validators reading stored-value or contact-based e-purse cards. IC Role / Device Role / Timing Role: Dual-role controller handling both card interface (CIO/CCLK/CRST) and status indication (P3.6/P3.7 LED drive) in space-constrained enclosures. Use Value: Reduces component count by combining card power regulation, presence sensing, and LED control - critical for compact, battery-powered transit devices. |
| Government ID Card Reader | Secure Access Control Panel |
Use Scenario: Used in desktop or kiosk-based national ID verification systems compliant with ICAO PKI standards. IC Role / Device Role / Timing Role: Secure interface for T=1 protocol execution with memory cards containing biometric templates and digital signatures. Use Value: Provides 4 kV HBM ESD protection on all card contacts - ensures reliability during frequent card insertion in public-access environments. | Use Scenario: Deployed in wall-mounted access panels authenticating employee smart cards at building entry points. IC Role / Device Role / Timing Role: Real-time card presence detection (CPRES), controlled power sequencing (CVCC ramp), and LED status feedback (P3.6) for user guidance. Use Value: Supports −40°C to +85°C operation - guarantees uninterrupted function in unheated outdoor enclosures or industrial facilities. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart card interface controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SLB9670HTPM | Trusted Platform Module (TPM) with integrated smart card interface; lacks standalone card power control and LED drivers. | Designed for PC platform security; not optimized for embedded POS or transit readers requiring direct card voltage switching. | Select SLB9670HTPM only when TPM functionality and cryptographic acceleration are required alongside basic card read capability. |
| SC16IS752IPW | Dual-channel UART with GPIO and I²C interface; no native ISO 7816 support, CVCC regulation, or GBP firmware. | Requires full host-side implementation of ISO 7816-3/4 timing and protocol - increases firmware complexity and validation burden. | Choose SC16IS752IPW only if existing host MCU lacks UART resources and external protocol handling is acceptable. |
Compared with SLB9670HTPM and SC16IS752IPW, the AT83C21GC144-PUTUL uniquely integrates ISO 7816-3/4 analog interface, triple-voltage card power, GBP protocol engine, and LED drivers in one QFN32 package - reducing total system BOM count by ≥6 components and accelerating time-to-certification for EMV and eID applications.
Availability
AT83C21GC144-PUTUL is available at Aetrix Electronics and suitable for POS terminal readers, transit fare validators, government ID card readers, and secure access control panels requiring stable component supply across extended product lifecycles.
Supply support for AT83C21GC144-PUTUL 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 company specializing in microcontrollers, nonvolatile memory, and secure authentication solutions for industrial, automotive, and consumer applications.
The AT83C21GC product line was designed specifically to simplify smart card integration in embedded systems - delivering pre-validated ISO 7816 compliance, low-power operation, and minimal host software overhead through integrated GBP firmware and hardware card interface logic.
FAQ
What smart card standards does the AT83C21GC144-PUTUL support?
The AT83C21GC144-PUTUL supports ISO/IEC 7816-1, -2, -3, and -4, EMV 2000, CB, Mondex®, Proton, ZKA, and Gemplus® contact card specifications. It handles both T=0 and T=1 asynchronous protocols, synchronous/memory cards using command interpreters, and EMV/non-EMV cards - all within a single hardware platform. This multi-standard support is implemented in silicon and firmware, not via external configuration.
Does the AT83C21GC144-PUTUL require external components for LED indication?
No, the AT83C21GC144-PUTUL does not require external current-limiting resistors for LED indication. Its P3.6 and P3.7 pins provide programmable 2 mA, 4 mA, or 10 mA sink current directly - allowing standard LEDs to be connected cathode-to-pin with anode tied to CVCC or DVCC. This feature is confirmed in the "LED Management" section of the official datasheet and eliminates two passive components per LED.
What is the operating temperature range for the AT83C21GC144-PUTUL?
The AT83C21GC144-PUTUL is rated for −40°C to +85°C, as specified in the Ordering Information table under "Industrial & Green" grade. This extended range is validated for continuous operation and applies to both QFN32 packaging variants (PUTUL and PURUL). The device maintains full ISO 7816-3 timing compliance and GBP protocol functionality across this entire range.
How does the AT83C21GC144-PUTUL handle smart card power supply voltage selection?
The AT83C21GC144-PUTUL generates programmable 1.8 V, 3 V, or 5 V card supply (CVCC) using an internal DC/DC converter driven by the LI pin and external 4.7 µH coil. Voltage selection is controlled via register bits (VSEL[1:0]) in the CVCC_CTRL register - no external switches or jumpers are needed. This allows dynamic switching between card types during runtime, as required by EMV L1 test procedures.
Is the AT83C21GC144-PUTUL pin-compatible with other members of the AT83C21GC family?
No, the AT83C21GC144-PUTUL is not pin-compatible with SSOP24 variants (e.g., AT83C21GC144-ICSIL). It uses a 32-pin QFN package with distinct pin mapping, including dedicated LED drivers (P3.6/P3.7), additional I/O (P3.4/T0, P3.5/CIO1/T1), and separated ground planes (VSS/CVSS). Migration from SSOP24 to QFN32 requires PCB redesign and layout revision - confirmed by comparing Figures 2 and 3 in the datasheet.
AT83C21GC144-PUTUL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- Serial
- Voltage - Supply:
- 2.85V ~ 5.4V
- Supplier Device Package:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
AT83C21GC144-PUTUL FAQ
1.How can I place an order for AT83C21GC144-PUTUL through Aetrix?
Please submit a Request for Quotation (RFQ) for AT83C21GC144-PUTUL 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-PUTUL reliable?
The price and inventory of AT83C21GC144-PUTUL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT83C21GC144-PUTUL is usually 5 days.
3.What payment methods are accepted for AT83C21GC144-PUTUL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT83C21GC144-PUTUL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT83C21GC144-PUTUL?
AT83C21GC144-PUTUL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT83C21GC144-PUTUL 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-PUTUL?
For technical support, including AT83C21GC144-PUTUL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT83C21GC144-PUTUL requirements.
6.How does Aetrix verify that AT83C21GC144-PUTUL is sourced from the original manufacturer or authorized distributors?
All AT83C21GC144-PUTUL 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-PUTUL meets industry standards.
7.What is the process for return or replacement of AT83C21GC144-PUTUL?
All AT83C21GC144-PUTUL units undergo pre-shipment inspection (PSI). If there is an issue with AT83C21GC144-PUTUL, 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-PUTUL part is unused and in its original packaging.
Return procedure for AT83C21GC144-PUTUL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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