Description

The TDA8003TS is a low cost one chip SIM interface, designed for use with GSM11.11, GSM11.12 and EMV96 (Europay, Mastercard, Visa) cards. It is controlled by I2C-bus and optimized for board space. The integrated DC-to-DC converter allows for compatibility with both 3V and 5V cards and environments. The TDA8003TS also has very low power consumption in Power-down mode and Off mode, making it suitable for battery-powered devices.

Specifications and features

• Subscriber Identification Module (SIM) card interface in accordance with GSM11.11, GSM11.12 and ISO 7816 requirements
• VCC regulation (3 or 5V ±8%) with controlled rise and fall times
• Card take-off protection
• One protected and buffered pseudo-bidirectional I/O line
• Clock generation (up to 10 MHz) with synchronous start and frequency doubling
• Clock stop LOW, clock stop HIGH or 1.25 MHz for cards Power-down mode
• Automatic activation and deactivation sequences
• Automatic processing of pin RST with count of the CLK cycles for start of the Answer To Reset (ATR)
• Warm reset command
• Supply voltage supervisor for Power-on reset and spike killing
• DC-to-DC converter allowing operation in a 3 or 5V environment
• Enhanced Electrostatic Discharge (ESD) protections on card side (6 kV minimum)
• Power-down mode with several active features and current reduction
• Off mode with 2 µA current
• Control from a microcontroller via a 400 kHz slave I2C-bus
• Four parallel devices possible due to 2 sub-address wires
• Interface signals supplied by an independent voltage

Application Scenarios

The TDA8003TS is commonly used in GSM mobile phones, SAM interfaces in banking terminals, portable card readers, and more.

Comparison

• Low cost
• Compact chip design
• Optimized for board space
• Compatible with 3V and 5V cards and environments
• Very low power consumption in Power-down mode and Off mode
• Supports various features for card activation and deactivation
• Enhanced Electrostatic Discharge (ESD) protections
• Multiple devices can be controlled in parallel

• Requires an I2C-bus for control
• Limited number of available addresses for interfacing with microcontroller