DS8007A-EAG+

DS8007A-EAG+ is a multiprotocol dual smart card interface in a 48 pin LQFP package. It is an automotive grade, low-cost, dual smart card reader interface supporting all ISO 7816, EMV™, and GSM11-11 requirements. Through its 8-bit parallel bus and dedicated address selects (AD3–AD0), the DS8007A can easily and directly connect to the nonmultiplexed bytewide bus of a secure microcontroller. Optionally, the parallel bus can be multiplexed to allow direct access to the multiplexed bus of an 80C51-compatible microcontroller through MOVX memory addressing. One integrated UART is multiplexed among the interfaces to allow high-speed automatic smart card processing with each card-possessing, independent, variable, baud-rate capability. The card interface is controlled by internal sequencers that support automatic activation and deactivation sequencing, handling all actions required for T=0, T=1, and synchronous protocols. Emergency deactivation is also supported in case of supply dropout.

• Complete interface/control for two separate smart card devices
• 8kV (min) ESD protection on card interfaces
• Internal IC card supply voltage generation
• Automatic card activation, deactivation, data communication controlled by internal sequencer
• Host interface through an 8-bit parallel bus (user selectable multiplexed or nonmultiplexed modes)
• Chip select and three-state bus allow multiple devices (card readers and memories) on bus
• 8-character receive FIFO with optional programmable depth/threshold
• I/O interface pin to external ISO 7816 UART
• Separate card clock generation (Up to 10MHz) with 2x frequency doubling
• Selectable card clock stop high, stop low, or internally generated 1.25MHz (for card power-down)