Low-power 3 V/5 V smart card coupler
Description
INTEGRATED CIRCUITS
DATA SHEET
TDA8005A Low-power (3 V/5 V) smart card coupler
Preliminary specification File under Integrated Circuits, IC17 1998 Mar 20
Philips Semiconductors
Preliminary specification
Low-power (3 V/5 V) smart card coupler
FEATURES • Smart card supply (5 and 3 V ±5%, 20 mA maximum with controlled rise and fall times) • Smart card clock generation (up to 8 MHz), with two times synchronous frequency doubling • Clock STOP HIGH, clock STOP LOW or 1.
25 MHz (from internal oscillator) for cards power-down mode • Specific UART on I/O for automatic direct/inverse convention settings and error management at character level • Automatic activation and deactivation sequences through an independent sequencer • Supports the protocol T = 0 in accordance with ISO 7816 GSM11.
11 requirements (Global System for Mobile communication); approved for Final GSM11.
11 Test Approval (FTA) • Several analog options are available for different applications: doubler or tripler DC-to-DC converter, card presence, active HIGH or LOW, threshold voltage supervisor, etc.
• Overloads and take-off protections • Current limitations in the event of short-circuit • Special circuitry for killing spikes during power-on or off • Supply supervisor • Step-up converter (supply voltage from 2.
5 to 6 V) • Power-down and sleep mode for low power consumption • Enhanced ElectroStatic Discharge (ESD) protections on card side (6 kV minimum) ORDERING INFORMATION TYPE NUMBER TDA8005AG TDA8005AH PACKAGE NAME LQFP64 QFP44 DESCRIPTION
TDA8005A
• Control and communication through a standard RS232 full-duplex interface • Optional additional I/O ports for: – keyboard – LEDs – display – etc.
• P80CL51 microcontroller core with 4-kbyte ROM and 256-byte RAM.
APPLICATIONS • Portable smart card readers for protocol T = 0 • GSM mobile phones.
GENERAL DESCRIPTION The TDA8005A is a low-cost card interface for portable smart card readers.
Controlled through a standard serial interface, it takes care of all ISO 781...
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