L6605 STMICROELECTRONICS | Alldatasheet

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8 DIFFERENT VPP OUTPUT VOLTAGE

VPP ,V CS RISE AND FALL TIME FULL SPEC WITH ISO/IEC 7816-3 POWER SUPPLY OUTPUT FOR MEMORY CARD (5V/80mA) POWER ON/OFF RESET AUTOMATIC SWITCH-OFF OF ALL FUNCTIONS IF THE REGULAR OPERATION IS ABORTED BY EXTRACTING THE SMART CARD INTERNAL STATUS FAILURE CODING - INSERTION FAILURE CODE - OVERTEMPERATURE FAILURE ANTI-BOUNCING SYSTEM INPUT/OUTPUT LOGIC TTL COMPATIBLE THERMAL PROTECTION

DESCRIPTION

The L6605 is an IC dedicated as intelligent inter- face between different types of smart cards and microprocessors. The internal architecture can be shared in a power supply section and in a diag- nostic parts. The power supply section can deliver 5V/80mA to supply the card and V PP /50mA to write the mem- ory inside the card; the VPP voltage can be pro- grammed by means of the 3 serial input bit (see TAB, 1). Table 1:3 bit DAC CODE CODE V PP 000 001 010 011 100 101 110 111 10V 12.5V 13.5V 15V 18V 21V 25V This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. December 1992 BLOCK DIAGRAM Powerdip 12+3+3 SO 12+4+4 ORDERING NUMBERS: L6605 L6605D MULTIPOWER BCD TECHNOLOGY

DESCRIPTION (continued) The diagnostic part allows to monitor failures due to overtemperature or wrong card positioning. The failures are internally coded and readable in- side the STATUS REGISTER through the bidirec- tional pin DATA configurated in output. The antibouncing circuitry, active during card in- sertion only, rejects ripetitive switching-on of the power supply sections. PIN FUNCTION Pin Description VS Input Power Supply voltage for VCS regulated output and for device supply. VCSO Output regulated voltage for card supply; ICSmax = 80mA; overload protected (81 to 200mA) VPPIN Input power supply for VPP regulated voltage VPPOUT Programmable output regulated voltage for memory card writing; 8 voltage levels are allowed by means of 3 bit DAC. IPPmax = 50mA. VCSEN (Active Low) VCS supply input enable; Its value is fixed from theµP allowing or not the normal R/W operations on the card. SWITCH Input signal produced by the reader system indicating that a card has been inserted. Internally, an antibouncing system is provided to avoid multiple switching. CS Chip select (active low). CS low level indicates an I/O operation request fromµP. IRQ Interrupt Request (Active low). An IRQ low level indicates that a card insertion/extraction or Failure has occured. PRG Program (Active low). PRG low level enables L6605 to deliver in output the VPPO level set by 3 bit DAC. DATA I/O pin for data exchange between µP and the device. Through this pin flow 3 bit input DAC or 2 bit STATUS REGISTER code. CK External clock. C EXT Pin to connect an external capacitor for antibouncing delay time. GND 4 pins to ground. PIN CONNECTIONS (Top view) Powerdip 12+3+3 SO 12+4+4 THERMAL DATA Symbol Parameter L6605 L6605D Unit R th j-amb Thermal Resistance Junction to Ambient 60 50 (*) °C/W (*) Soldered an a 35µ thick 6cm2 P.C. board copper area. L6605

Regulated voltage to supply the card (5V/80mA). the VCS range variation is equal to + 3%. ICS = 1mA to 80mA) the VCS range is + 5%. Table 1. During nominal conditions (I Note 1:True for values in Tab. 1 only. ;Note 2:Values higher than 500nF are permitted, but the ton, toff timing will be out ISO norm.

±2.5%; while during line/load variation (IPP = 1mA to 50mA; VPPI = max. 33V) the VPP range is±5%. An internal circuitry checks the IPP level; the pro- tection block activates an IRQ with the proper fail- ure code when the output current is in 51mA to 150mA range. Under the power ON/OFF thresh- old value the logic section and the power supply regulators are disabled. LOGIC SECTION L6605 includes a logic circuitry in order to protect, both card and itself. If a failure occours an asyn- chronous IRQ is sent to theµP; consequently the µP forces low CS signal as I/O request. After CS variation theµP sends also one ”data direction bit” into DATA DIRECTION REGISTER. Direction bit = ”0” Pin DATA is configurated in output and theµP reads the 2 bit STATUS REGISTER content Code 1st bit 2nd bit

0 No insertion No Failure

1 Card Inserted Failure

Failure could be overtemperature over the 2 regu- lators (VPP, VCS). Direction bit = ”1” Pin DATA is configurated in input to allow the 3 bit DAC loading and than the programming of VPPo output level voltage. (see Table 1). During card insertion only rising edge of switch signal is detected , while during card extraction switch level is detected. In card extraction mode if occours a mechanical switch bouncing, which causes a pulse on SWITCH input pin with duration t≥ 50µs the L6605 will have the 1st Status Register content equal to ”0” and 1 ms t shadow timing like during card insertion mode. Bouncing on SWITCH pin with duration T<50µs will be transparent in the Status Register. Figure 1:Card Insertion L6605

Figure 2:DAC Loading and Programmed Voltage on Set L6605

Figure 3:End Normal Operation L6605

POWERDIP18 PACKAGE MECHANICAL DATA DIM. mm inch a1 0.51 0.020 B 0.85 1.40 0.033 0.055 b 0.50 0.020 b1 0.38 0.50 0.015 0.020 D 24.80 0.976 E 8.80 0.346 e 2.54 0.100 e3 20.32 0.800 F 7.10 0.280 I 5.10 0.201 L 3.30 0.130 Z 2.54 0.100 L6605

SO20 PACKAGE MECHANICAL DATA DIM. mm inch A 2.65 0.104 a1 0.1 0.3 0.004 0.012 a2 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.013 C 0.5 0.020 c1 45 (typ.) D 12.6 13.0 0.496 0.512 E 10 10.65 0.394 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.4 7.6 0.291 0.299 L 0.5 1.27 0.020 0.050 M 0.75 0.030 S 8 (max.) L6605

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications men- tioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without ex- press written approval of SGS-THOMSON Microelectronics.  1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. L6605