MC33560DWR2

The MC33560DWR2 from On Semiconductor is a versatile interface IC tailored for smartcard reader and writer applications. It facilitates the management of various smart or memory cards through a flexible microcontroller interface. This IC is particularly well-suited for low-power and portable devices due to its power-saving features and minimal external component requirements. The wide battery supply voltage range (1.8 V to 6.6 V) and low quiescent current in standby mode (30 μA max) contribute to extended battery life.

The MC33560DWR2 supports programmable VCC supply for both 3.0 V and 5.0 V card operations. It includes a self-contained DC-DC converter for generating VCC, requiring only a few passive components. The device ensures high signal integrity on card I/O and signal lines through controlled power-up/down sequences. Additional features include a programmable card clock generator, chip select capability for parallel coupler operation, and high ESD protection (4.0 kV HBM) on card pins. Fault monitoring for VBAT low, VCC low, and ICC limit is integrated, along with current limiting and short-circuit protection on all card outputs.

This interface IC is 100% compatible with the ISO 7816-3 standard. It generates a microprocessor wakeup signal upon card insertion and offers fault monitoring capabilities. The MC33560DWR2 is available in a 24-SOIC package and is tested for an operating temperature range of -25°C to +85°C. Pb-free packages are also available.