ST8024LTR STMicroelectronics, ST8024LTR Datasheet
ST8024LTR
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ST8024LTR Summary of contents
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... DD Table 1. Device summary PORADJ/ Order code 1.8 V function (1) ST8024LCDR PORADJ (1) ST8024LCTR PORADJ (1) ST8024LACDR 1.8 V ST8024LTR 1.8 V (1) ST8024LACTR 1 Certified by NDS. May 2012 This is information on a product in full production ■ Enhanced ESD protection on card side (>6 kV) ■ 26 MHz integrated crystal oscillator ■ Built-in debounce on card presence contacts generation ■ ...
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Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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ST8024L List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of figures List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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ST8024L 1 Description The ST8024L is a complete low-cost analog interface for asynchronous Class A, B, and C smartcards. It can be placed between the card and the microcontroller with few external components to perform all supply protection and control ...
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... Diagram 2 Diagram Figure 1. Block diagram used with the PORADJ pin if needed. 2. Not available in the TSSOP-20L package. 3. ST8024LCDR, ST8024LCTR. 4. ST8024LACDR, ST8024LACTR, ST8024LTR. 6/35 Doc ID 17709 Rev 5 ST8024L ...
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... selection for communication with the smartcard. Logic high CC selects 5 V operation and logic low selects 3 V operation (for ST8024LACDR, 5V/3V ST8024LACTR, and ST8024LTR: if the 1.8V pin is logic high, the 5V/3V pin is a “don't care”). See Table 23 PGND Power ground for step-up converter ...
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... PORADJ Power-on reset threshold adjustment input (ST8024LCDR, ST8024LCTR) 1 operation selection. Logic high selects 1.8 V operation and CC 1.8V overrides any setting on the 5V/3V pin. With an internal 11 kΩ pull-down resistor to GND. (ST8024LACDR, ST8024LACTR and ST8024LTR) CMDVCC Start activation sequence input (active low) RSTIN Card reset input from MCU V Supply voltage ...
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ST8024L 4 Maximum ratings Table 3. Absolute maximum ratings Symbol V V Supply voltage DD, DDP Voltage on pins XTAL1, XTAL2, 5V/3V, RSTIN, AUX2UC, AUX1UC, V I/OUC, CLKDIV1, CLKDIV2, PORADJ/1.8V, CMDVCC, PRES, n1 PRES, and OFF V Voltage on card ...
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Electrical characteristics 5 Electrical characteristics Table 6. Electrical characteristics over recommended operating condition (1) Symbol Parameter V Supply voltage DD Supply voltage for the V DDP step-up converter I Supply current DD Step-up converter supply I DDP current Falling threshold ...
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ST8024L Table 7. Step-up converter (1) Symbol Parameter f Clock frequency CLK Threshold voltage for step-up converter to V th(vd-vf) change to voltage follower Output voltage on pin (average value 3 ...
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Electrical characteristics Table 8. Card supply voltage characteristics (continued) (1) Symbol Parameter |I | Card supply current CC S Slew rate 3 MHz, unless otherwise noted. Typical values ...
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ST8024L Table 11. Data lines to card reader (pins I/O, AUX1, and AUX2 with integrated 11 kΩ pull-up resistor (1) Symbol Parameter V Output voltage O(inactive) I Output current O(inactive) V High level output voltage OH ...
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Electrical characteristics Table 12. Data lines to microcontroller (pins I/OUC, AUX1UC, and AUX2UC with integrated 11 kΩ pull-up resistor to V (1) Symbol Parameter V High level output voltage OH V Low level output voltage OL V High level input ...
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ST8024L Table 15. Clock output to card reader (pin CLK) (1) Symbol Parameter Output voltage in inactive V O(inactive) mode I Output current O(inactive) V Low level output voltage OL V High level output voltage Rise and ...
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Electrical characteristics Table 17. Card presence inputs (pins PRES and PRES) (1) Symbol Parameter V Low level input voltage IL V High level input voltage IH High level input leakage |I | LIH current Low level input leakage |I | ...
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ST8024L Figure 3. Definition of output and input transition times Doc ID 17709 Rev 5 Electrical characteristics CS13450 17/35 ...
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Functional description 6 Functional description Throughout this document it is assumed that the reader is familiar with ISO7816 terminology. 6.1 Power supply The supply pins for the ST8024L are V 6.5 V. All signals interfacing with the system controller are ...
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ST8024L Figure 4. Voltage supervisor 6.2.2 With an external divider on pin PORADJ In this case, a resistor divider is connected to the PORADJ pin (see and V are the external rising threshold voltage and the external falling threshold th(ext) ...
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Functional description 6.3 Clock circuitry (only on SO-28 and TSSOP-28 packages) The card clock signal (CLK) is derived from a clock signal input to pin XTAL1 or from a crystal operating MHz connected between pins XTAL1 ...
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ST8024L 6.4 I/O transceivers The three data lines I/O, AUX1, and AUX2 are identical. The idle state is realized by both I/O and I/OUC lines being pulled high via an 11 kΩ resistor (I I/O is referenced to ...
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Functional description The clock may be applied to the card using the following sequence (see 1. Set RSTIN high. 2. Set CMDVCC low. 3. Reset RSTIN low between t 4. RST remains low until t 5. After t , RSTIN ...
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ST8024L Figure 6. Activation sequence at t 6.7 Active mode When the activation sequence is completed, the ST8024L is in its active mode. Data are exchanged between the card and the microcontroller via the I/O lines. The ST8024L is designed ...
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Functional description Figure 7. Deactivation sequence 6.9 V generator CC The V generator has a capacity to supply (max.) continuously (max and 45 mA (max.) at 1.8 ...
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ST8024L 6.10 Fault detection The following fault conditions are monitored: ● Short-circuit or high current on V ● Removal of a card during a transaction ● V dropping DD ● Step-up converter operating out of the specified values (V V ...
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Functional description Figure 9. Emergency deactivation sequence (card extraction) 6.11 V selection settings CC The ST8024L supports three smartcard V is controlled by the 1.8V and 5V/3V signals as shown in priority over the 5V/3V. When the 1.8 V pin ...
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ST8024L 7 Applications Figure 10. Hardware hookup 1. These capacitors must be < 350 mΩ ESR and be placed near the IC (within 10 mm). 2. ST8024L and the microcontroller must use the same V 3. Make short, straight connections ...
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Package mechanical data 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...
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ST8024L Figure 12. TSSOP-20 package mechanical drawing A PIN 1 IDENTIFICATION Table 25. TSSOP-20 package mechanical data Symbol Dimensions mm. Min. Typ. Max. ...
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Package mechanical data Figure 13. TSSOP-28 package mechanical drawing Table 26. TSSOP-28 package mechanical data Symbol 30/35 Dimensions mm. Min. Typ. Max. 1.2 0.05 0.15 0.8 1 1.05 0.19 ...
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ST8024L Figure 14. SO-28 tape and reel schematic Note: Drawing is not to scale. Table 27. SO-28 tape and reel mechanical data Symbol Dimensions mm. Min. ...
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Package mechanical data Figure 15. TSSOP-20 tape and reel schematic Note: Drawing is not to scale. Table 28. TSSOP-20 tape and reel mechanical data Symbol 32/35 ...
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ST8024L Figure 16. TSSOP-28 tape and reel schematic Note: Drawing is not to scale. Table 29. TSSOP-28 tape and reel mechanical data Symbol Dimensions mm. Min. ...
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Revision history 9 Revision history Table 30. Document revision history Date 19-Jul-2010 30-Jul-2010 27-Sep-2010 09-Feb-2012 04-May-2012 34/35 Revision 1 Initial release. 2 Updated Description, Updated Features, Table 3 Section 6.2.2, Section Added ST8024LACTR device, updated Features, Section 1: Description 4 ...
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... ST8024L Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...