AT83C21GC144-ICSUL

Specialized Overview

The AT83C21GC144-ICSUL is a specialized smart card interface controller manufactured by Microchip Technology, formerly Atmel. It manages electrical interfaces and communication with ISO/IEC 7816-1, 2, 3, and 4 compatible smart cards and memory cards. The device supports asynchronous T=0 and T=1 transmission speeds ranging from 9.6 Kbps to 115 Kbps, alongside synchronous memory cards using a command interpreter. It features an internal DC/DC converter for card power supply at 1.8V, 3V, or 5V. Host connectivity is achieved via a serial asynchronous link operating between 1,200 bps and 115,200 bps using the Gemplus Block Protocol (GBP). The component operates within a temperature range of 0°C to +70°C and is housed in a 24-pin SSOP package.

Specialized Feature Summary

• Compliance with ISO/IEC 7816 standards and EMV 2000 specifications for secure contact-based transactions
• Integrated DC/DC converter enabling direct powering of smart cards without external voltage regulators
• Built-in Gemplus Block Protocol (GBP) handling for simplified host processor integration
• Hardware-level ESD protection rated at 4 kV on all smart card interface pins

Specialized Applications

• Contact-based payment terminals and POS systems
• SIM card readers for mobile telecommunications devices
• Electronic passport (e-passport) verification equipment
• Secure access control and identity authentication hardware

Specialized Procurement Notes

Verify that the specific ordering suffix matches the required industrial temperature range and packaging format. Confirm firmware version compatibility with existing GBP library implementations. Ensure the design accommodates the necessary external components for the internal DC/DC converter, including the coil and decoupling capacitors. Validate pinout alignment with the 24-pin SSOP footprint during PCB layout.

Specialized Selection Notes

Select this component when a dedicated hardware solution is required to manage ISO 7816 smart card protocols without burdening the main microcontroller. It is suitable for designs requiring robust ESD protection and integrated card power regulation. Consider alternative packages if higher temperature ratings or different form factors are needed. Evaluate system complexity reduction benefits against the specific interface requirements of the target application.

Specialized Part Context

This device belongs to the AT83C21GC family of smart card controllers originally developed by Atmel Corporation before its acquisition by Microchip Technology. The product line focuses on simplifying the integration of contact smart card interfaces into embedded systems. The 'ICSUL' suffix specifically denotes the Industrial temperature grade and Green RoHS-compliant SSOP24 packaging configuration.

Specialized Replacement Considerations

Consult official Microchip documentation for cross-reference data. Verify functional equivalence regarding protocol support and electrical characteristics before substitution.