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INTRODUCTION

The ST72411R devices are members of the ST7 microcontroller family. They are designed for Smartcard reader applications.

All ST72411R family devices are based on a common industry-standard 8-bit core, featuring an enhanced instruction set.

■ Memories

– 4K Program memory (ROM/FLASH) with read-out protection

– In-Situ Programming (remote ISP) for FLASH devices using Smartcard or standard I/O lines

– 256-bytes RAM

■ Clock, Reset and Supply Management

– Power-on supply at Smartcard insertion

– Low supply voltage detection for battery monitoring

– Smart Card withdrawal detection

– On-chip main clock source

– 3 Power saving modes

– Clock-out capability for synchronous and asynchronous Smartcards

■ Smartcard Interface

– Smart Card Supply Supervisor with: 3V or 5V voltage regulator and current overload protection

■ 15 I/O Ports

– 15 multifunctional bidirectional I/O lines with: external interrupt capability (2 vectors), 2 alternate function lines, 5 I/Os for ISO7816-3 Smartcard interface, 1 I/O for Smartcard withdrawal detection

■ Display Driver

– LCD driver with 32 segment outputs and 4 backplane outputs able to drive up to 32x4 LCD displays

■ Timer

– One 8-bit timer with: 9-bit prescaler, selectable input frequency with external clock input option and event output signal generation capability

■ Instruction Set

– 8-bit Data Manipulation

– 63 Basic Instructions

– 17 main Addressing Modes

– 8 x 8 Unsigned Multiply Instruction

– True Bit Manipulation

■ Development Tools

– Full hardware/software development package