Universal Serial Bus Features:

? USB V2.0 Compliant

? Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s)

? Supports Control, Interrupt, Isochronous and Bulk

Transfers

? Supports up to 32 Endpoints (16 bidirectional)

? 1-Kbyte Dual Access RAM for USB

? On-Chip USB Transceiver with On-Chip Voltage

Regulator

? Interface for Off-Chip USB Transceiver

? Streaming Parallel Port (SPP) for USB streaming

transfers (40/44-pin devices only)

Special Microcontroller Features:

? C Compiler Optimized Architecture with optional

Extended Instruction Set

? 100,000 Erase/Write Cycle Enhanced Flash

Program Memory typical

? 1,000,000 Erase/Write Cycle Data EEPROM

Memory typical

? Flash/Data EEPROM Retention: > 40 years

? Self-Programmable under Software Control

? Priority Levels for Interrupts

? 8 x 8 Single-Cycle Hardware Multiplier

? Extended Watchdog Timer (WDT):

- Programmable period from 41 ms to 131s

? Programmable Code Protection

? Single-Supply 5V In-Circuit Serial

Programming? (ICSP?) via two pins

? In-Circuit Debug (ICD) via two pins

? Optional dedicated ICD/ICSP port (44-pin devices only)

? Wide Operating Voltage Range (2.0V to 5.5V)