DS8023-KIT Maxim Integrated Products, DS8023-KIT Datasheet
DS8023-KIT
Specifications of DS8023-KIT
Related parts for DS8023-KIT
DS8023-KIT Summary of contents
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... ISO 7816, EMV*, and GSM11-11 applications. The DS8023 supports 5V, 3V, and 1.8V smart cards, and pro- vides an option for ultra-low stop-mode power consump- tion. The DS8023 is available in 28-pin TSSOP and SO packages, and can often be used as a replacement for the TDA8024 with little or no application changes. ...
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... Current 3V Cards DD (Current Consumed by DS8023 Only) Active V Current 1.8V Cards DD (Including 30mA Draw from 1.8V Card) Active V Current 1.8V Cards DD (Current Consumed by DS8023 Only) Inactive-Mode Current Stop-Mode Current CLOCK SOURCE Crystal Frequency XTAL1 Operating Conditions External Capacitance for Crystal Internal Oscillator 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 SHUTDOWN TEMPERATURE Shutdown Temperature RST PIN Output Low Voltage Card-Inactive Mode Output Current Output Low Voltage Output ...
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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 Output Current Card-Active Mode Shutdown Current Threshold Slew Rate DATA LINES (I/O AND I/OIN) ...
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... T A Note 2: I measures the amount of current used by the DS8023 to provide the smart card current minus the load. DD_IC Note 3: Stop mode is enabled by setting CMDVCC, 5V/3V, and 1_8V to logic-high. Note 4: Parameters are guaranteed to meet all ISO 7816, GSM11-11, and EMV 2000 requirements. For the 1.8V card, the maximum rise time and fall time is 10ns ...
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Smart Card Interface PIN NAME CLKDIV1, Clock Divider. Determines the divided-down input clock frequency (presented at XTAL1 or from CLKDIV2 crystal at XTAL1 and XTAL2) on the CLK output pin. Dividers and 8 ...
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... The charge pump operates (voltage follower (voltage doubler) mode depending on the input V and the selected card voltage (5V or 3V). DDA V CC CGND • For 5V cards, the DS8023 operates mode RST for V > 5.8V and mode for V DDA CLK • For 3V cards, the DS8023 operates mode PRES for V > ...
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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 DS8023 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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... CC + 1.5 × T times a controlled slope ( the internal oscillator period (approximately 25µs). 5) DS8023: I/O, AUX1, and AUX2 are enabled ( 4T DS8023: The CLK signal is applied to the C3 con- tact ( DS8023: RST is enabled ( CMDVCC V CC I/O CLK RSTIN RST I/OIN ...
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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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... Generator the PRES signals at card insertion or withdrawal. The DS8023 has a debounce feature with an 8ms typical duration (Figure 6). When a card is inserted, output OFF goes high after the debounce time delay. When the card is extracted, an automatic deactivation sequence of the card is performed on the first true/false transition on PRES and output OFF goes low ...
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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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DEACTIVATE INTERFACE CMDVCC 1_8V 5V/3V STOP MODE OFF OFF FOLLOWS PRES IN STOP MODE PRES V CC Figure 8. Stop-Mode Sequence ______________________________________________________________________________________ Smart Card Interface DEACTIVATE ACTIVATE STOP MODE STOP MODE 8ms WARMUP DELAY 8ms DEBOUNCE OFF ASSERTED TO WAIT ...
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... If both 1_8V CC voltages: CC and 5V/3V are high with CMDVCC high at the same time, the DS8023 enters stop mode. To avoid acciden- tal entry into stop mode, the state of 1_8V and 5V/3V must not be changed simultaneously. A minimum delay of 100ns should be observed between changing the CC states of 1_8V and 5V/3V ...
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... OFF ... RSTIN CMDVCC ... AUX2IN GPIO AUX1IN ISOIO1 I/OIN XTAL1 XTAL2 33pF *PLACE A 100nF CAPACITOR CLOSE TO DS8023 AND PLACE A 220nF CAPACITOR CLOSE TO CARD CONTACT. Figure 10. 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 DS8023 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 ...