Overview
The ST8034ATDT is a 16-pin smartcard interface device produced by STMicroelectronics. It is designed to provide a complete and low-cost analog interface for both asynchronous and synchronous smartcards. This device is compatible with ISO 7816 and EMV™ 4.3 payment systems, making it suitable for a variety of applications including smartcard readers, set-top boxes, pay-TV, identification, banking, and tachographs.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | SO16 (3.9 x 9.9 mm) or QFN16 (3 x 3 mm) |
| Supply Voltage | 5 V, 3 V, or 1.8 V (selectable) |
| Card Clock Frequency | Up to 20 MHz, programmable by CLKDIV pin |
| Temperature Range | -25 to +85 °C |
| ESD Protection | 8 kV on card side |
| Voltage Supervisors | Fixed threshold (VDD, VDDP, VDD(INTF)); optional external resistor divider for VDD(INTF) threshold |
| Card Presence Detection | Debounced contacts |
| Thermal and Short-Circuit Protection | Protection for all card contacts |
Key Features
- Complete smartcard interface compatible with ISO 7816 and EMV™ 4.3 payment systems.
- One protected half-duplex bidirectional buffered I/O line to the smartcard.
- Selectable smartcard supply voltage (VCC) with controlled rise and fall times and smart overload detection with glitch immunity.
- Optional chip select function for isolating the device interface from the host microcontroller signals.
- Card clock generation by integrated crystal oscillator or from external clock source.
- Automatic card activation and deactivation sequences initiated by the microcontroller.
- Emergency deactivation sequences initiated by various fault conditions (e.g., card supply short-circuit, card take-off, falling VDD).
- Multipurpose card status signal OFF.
- Non-inverted card reset pin RST driven by the RSTIN input.
Applications
- Smartcard readers.
- Set-top boxes.
- Pay-TV systems.
- Identification systems.
- Banking systems.
- Tachographs.
Q & A
- What is the ST8034ATDT used for? The ST8034ATDT is used as a smartcard interface for various applications including smartcard readers, set-top boxes, pay-TV, identification, banking, and tachographs.
- What are the compatible standards for the ST8034ATDT? The ST8034ATDT is compatible with ISO 7816 and EMV™ 4.3 payment systems.
- What are the available package types for the ST8034ATDT? The device is available in SO16 (3.9 x 9.9 mm) and QFN16 (3 x 3 mm) packages.
- What is the range of supply voltages for the ST8034ATDT? The supply voltage can be 5 V, 3 V, or 1.8 V, and is selectable.
- What is the maximum card clock frequency supported by the ST8034ATDT? The card clock frequency can be up to 20 MHz and is programmable by the CLKDIV pin.
- Does the ST8034ATDT have thermal and short-circuit protection? Yes, the device has thermal and short-circuit protection for all card contacts.
- How does the ST8034ATDT handle card presence detection? The device features debounced contacts for card presence detection.
- What is the ESD protection level of the ST8034ATDT? The device has an ESD protection level of 8 kV on the card side.
- Can the ST8034ATDT be used in harsh temperature environments? Yes, the device operates within a temperature range of -25 to +85 °C.
- How does the ST8034ATDT manage voltage supervision? The device includes voltage supervisors with fixed thresholds (VDD, VDDP, VDD(INTF)) and an optional external resistor divider for setting the VDD(INTF) threshold.
