Описание
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. ST7265x is compliant with the USB Mass Storage Class specifications, and supports related protocols such as BOT (Bulk Only Transfer) and CBI (Control, Bulk, Interrupt).
- Memories
- Up to 32K of ROM or High Density Flash (HD- Flash) program memory with read/write protection
- For HDFlash devices, In-Application Programming (IAP) via USB and In-Circuit programming (ICP)
- Up to 5 Kbytes of RAM with up to 256 bytes stack
- Clock, Reset and Supply Management
- PLL for generating 48 MHz USB clock using a 12 MHz crystal
- Low Voltage Reset (except on E suffix devic- es)
- Dual supply management: analog voltage de- tector on the USB power line to enable smart power switching from USB power to battery (on E suffix devices).
- 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
- Clock-out capability
- 47 programmable I/O lines
- 15 high sink I/Os (8mA @0.6V / 20mA@1.3V)
- 5 true open drain outputs
- 24 lines programmable as interrupt inputs
- USB (Universal Serial Bus) Interface
- with DMA for full speed bulk applications com- pliant with USB 12 Mbs specification (version 2.0 compliant)
- On-Chip 3.3V USB voltage regulator and transceivers with software power-down
- 5 USB endpoints: 1 control endpoint 2 IN endpoints supporting interrupt and bulk 2 OUT endpoints supporting interrupt and bulk
- Hardware conversion between USB bulk packets and 512-byte blocks
- Mass Storage Interface
- DTC (Data Transfer Coprocessor): Universal Serial/Parallel communications interface, with software plug-ins for current and future protocol standards: Compact Flash – Multimedia Card – Secure Digital Card – SmartMediaCard – Sony Memory Stick – NAND Flash – ATA Peripherals
- 2 Timers
- Configurable Watchdog for system reliability
- 16-bit Timer with 2 output compare functions.
- 2 Communication Interfaces
- SPI synchronous serial interface
- I2C Single Master Interface up to 400 KHz
- D/A and A/D Peripherals
- PWM/BRM Generator (with 2 10-bit PWM/ BRM outputs)
- 8-bit A/D Converter (ADC) with 8 channels
- 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
