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INTRODUCTION

The ST7265x MCU supports volume data exchange with a host (computer or kiosk) via a full speed USB interface. The MCU is capable of handling various transfer protocols, with a particular emphasis on mass storage applications.

¡ö Memories

¨C Up to 32K of ROM or High Density Flash (HDFlash) program memory with read/write protection

¨C For HDFlash devices, In-Application Programming (IAP) via USB and In-Circuit programming (ICP)

¨C Up to 5 Kbytes of RAM with up to 256 bytes stack

¡ö Clock, Reset and Supply Management

¨C PLL for generating 48 MHz USB clock using a 12 MHz crystal

¨C Low Voltage Reset (except on E suffix devices)

¨C Dual supply management: analog voltage detector on the USB power line to enable smart power switching from USB power to battery (on E suffix devices).

¨C Programmable Internal Voltage Regulator for Memory cards (2.8V to 3.5V) supplying: Flash Card I/O lines (voltage shifting) Up to 50 mA for Flash card supply

¨C Clock-out capability

¡ö 47 programmable I/O lines

¨C 15 high sink I/Os (8mA @0.6V / 20mA@1.3V)

¨C 5 true open drain outputs

¨C 24 lines programmable as interrupt inputs

¡ö USB (Universal Serial Bus) Interface

¨C with DMA for full speed bulk applications compliant with USB 12 Mbs specification (version 2.0 compliant)

¨C On-Chip 3.3V USB voltage regulator and transceivers with software power-down

¨C 5 USB endpoints: 1 control endpoint 2 IN endpoints supporting interrupt and bulk 2 OUT endpoints supporting interrupt and bulk

¨C Hardware conversion between USB bulk packets and 512-byte blocks

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