TDA8026
Multiple smart card slot interface IC
Rev. 1.1 — 30 June 2016
Product data sheet
1. General 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).
Its packaging supports the latest payment terminal security requirements.
2. Features and benefits
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
VCC(n) regulation on all card slots at ICC 55 mA:
5 V, 3 V or 1.8 V 5 %
Current spikes of 40 nAs up to 20 MHz for 5 V cards with controlled rise and fall
times
Current limitation of approximately 100 mA
Thermal protection and short-circuit protection on all card contacts
Automatic activation and deactivation sequences initiated by the software or hardware
in the event of a short-circuit, card take-off or voltage drop-out for VDD(INTF), VDD or VUP
Enhanced ElectroStatic Discharge (ESD) protection on the card-side up to 6 kV
20 MHz clock input
Card clock generation up to 20 MHz and dividable by 1, 2, 4 or 5 with synchronous
frequency changes:
Stop, HIGH or LOW
Clock frequency between 1 MHz and 2.2 MHz in card low-power mode
Current limitation on pin CLK(n)