DS8024-RRX+T&R Maxim Integrated Products, DS8024-RRX+T&R Datasheet
DS8024-RRX+T&R
Specifications of DS8024-RRX+T&R
Related parts for DS8024-RRX+T&R
DS8024-RRX+T&R Summary of contents
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... Rev 1; 8/08 General Description The DS8024 smart card interface low-cost, analog front-end for a smart card reader, designed for all ISO 7816, EMV*, and GSM11-11 applications. The DS8024 is a pin-for-pin drop-in replacement for the NXP TDA8024 and is offered in 28-pin TSSOP and SO packages. ...
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... Current 5V Cards DD (Current Consumed by DS8024 Only) Active V Current 3V Cards DD (Including 65mA Draw from 3V Card) Active V Current 3V Cards DD (Current Consumed by DS8024 Only) Inactive-Mode Current CLOCK SOURCE Crystal Frequency XTAL1 Operating Conditions External Capacitance for Crystal Internal Oscillator SHUTDOWN TEMPERATURE Shutdown Temperature 2 _______________________________________________________________________________________ Maximum Junction Temperature .....................................+125° ...
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RECOMMENDED DC OPERATING CONDITIONS (continued +3.3V +5.0V +25°C, unless otherwise noted.) (Note 1) DD DDA A PARAMETER RST PIN Output Low Voltage Card-Inactive Mode Output Current Output Low Voltage Output High Voltage Rise Time ...
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Smart Card Interface RECOMMENDED DC OPERATING CONDITIONS (continued +3.3V +5.0V +25°C, unless otherwise noted.) (Note 1) DD DDA A PARAMETER DATA LINES (I/O AND I/OIN) I/O I/OIN Falling Edge Delay Pullup Pulse Active Time ...
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... Window End PRES/PRES Debounce Time Note 1: Operation guaranteed -40°C and T A Note 2: IDD_IC measures the amount of current used by the DS8024 to provide the smart card current minus the load. Note 3: Guaranteed by design, but not production tested. _______________________________________________________________________________________ Smart Card Interface SYMBOL CONDITIONS ...
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... Smart Card Reset. Card reset output from contact C2. Smart Card Supply Voltage. Decouple to CGND (card ground) with 2 x 100nF or 100 + 220nF capacitors (ESR < 100m ). 18 N.C. No Connection. Unused on the DS8024. CMDVCC 19 Activation Sequence Initiate. Active-low input from host. 20 RSTIN Card Reset Input. Reset input from the host. 21 ...
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... Figure 2. Voltage Supervisor Behavior _______________________________________________________________________________________ Smart Card Interface input pin, instead using the DS8024’s default reset threshold.) The DS8024 can operate from a single supply or a dual supply. The supply pins for the device are and PGND. V DDA to 6.0V, and is the supply for signals that interface with the host controller ...
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... Current to and from the card I/O lines is limited internally to 15mA. The maximum frequency on these lines is 1MHz. The DS8024 powers up with the card interface in the inactive mode. Minimal circuitry is active while waiting for the host to initiate a smart card session. • All card contacts are inactive (approximately 200Ω ...
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... DS8024: RST stays low until t the copy of RSTIN. 5) DS8024: RSTIN has no further effect on CLK after t If the applied clock is not needed, set CMDVCC low with RSTIN low. In this case, CLK starts at t 200ns after the transition on I/O, see Figure 4); after t ...
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Smart Card Interface CMDVCC V CC I/O CLK RSTIN RST I/OIN Figure 4. Activation Sequence CMDVCC RST CLK I Figure 5. Deactivation Sequence 10 ______________________________________________________________________________________ 200ns ...
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... PRES and output OFF goes low. Stop Mode (Low-Power Mode) The DS8024 (like the TDA8024) does not support a low- power stop mode. For applications requiring low-power support, refer to the DS8113. The DS8024 supports two smart card V and 5V ...
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Smart Card Interface PRES OFF CMDVCC DEBOUNCE V CC Figure 6. Behavior of PRES, OFF, CMDVCC, and V OFF PRES RST CLK I Figure 7. Emergency Deactivation Sequence (Card Extraction) 12 ______________________________________________________________________________________ DEBOUNCE DEACTIVATION CAUSED BY ...
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... OFF ... RSTIN CMDVCC ... AUX2IN GPIO AUX1IN ISOIO1 I/OIN XTAL1 XTAL2 33pF *PLACE A 100nF CAPACITOR CLOSE TO DS8024 AND PLACE A 220nF CAPACITOR CLOSE TO CARD CONTACT. Figure 8. Typical Application Diagram ______________________________________________________________________________________ Smart Card Interface 100nF +3.3V 33pF 100nF 100nF 100nF +10μF GND V CP1 ...
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... V V lines separately. These lines are best posi- DDA tioned under the connector. • The DS8024 and the host microcontroller must use the same V supply. Pins CLKDIV1, CLKDIV2, DD RSTIN, PRES, AUX1IN, I/OIN, AUX2IN, 5V/3V, CMDVCC, and OFF are referenced to V ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2008 Maxim Integrated Products ...