TDA8026 Overview
Description
The TDA8026 is a cost-effective, analog interface for addressing multiple smart card slots in a Point Of Sales (POS) terminal. It can address up to two main cards (synchronous or asynchronous smart cards supported) and up to four Security Access Modules (SAMs).
Key Features
- I2C-bus controlled IC card interface in a TFBGA64 package
- Supply voltage between 2.7 V and 5.5 V
- Dedicated microcontroller interface supply voltage (VDD(INTF))
- Shutdown mode ensures very low power consumption when the TDA8026 is inactive
- Programmable power reduction modes triggered when the card slots are inactive
- VCC(n) generation via DC-to-DC converter: two card slots can be fully loaded, the three others in reduced consumption mode
- Two clock input pins: CLKIN1 for card slot 1 and CLKIN2 for card slots 2 to 5
- Two transparent I/O lines on microcontroller side, one for card slot 1 and the other for card slots 2 to 5
- Five protected, half-duplex, bidirectional, buffered I/O lines with current limitation at 15 mA and a maximum frequency 1 MHz
- Two I2C-bus controlled auxiliary I/O lines
