Features

■ Memories

– 4, 8, 16 or 32 Kbytes Program memory: high density Flash (HDFlash), or ROM with Readout and Write Protection

– In-application Programming (IAP) and in circuit programming (ICP)

– 384, 512 or 1024 bytes RAM memory (128-byte stack)

■ Clock, reset and supply management

– Run, Wait, Slow and Halt CPU modes

– 12 or 24 MHz oscillator

– RAM retention mode

– Optional low voltage detector (LVD)

■ Universal serial bus (USB) interface

– DMA for low speed applications compliant with USB 1.5 Mbs (version 2.0) and HID specifications (version 1.0)

– Integrated 3.3 V voltage regulator and transceivers

– Supports USB DFU class specification

– Suspend and Resume operations

– 3 endpoints with programmable In/Out

configuration

■ Up to 27 I/O ports

– Up to 8 high sink I/Os (10 mA at 1.3 V)

– 2 very high sink true open drain I/Os (25 mA at 1.5 V)

– Up to 8 lines individually programmable as interrupt inputs

■ 1 analog peripheral

– 8-bit A/D converter with 8 or 12 channels

■ 2 timers

– Programmable watchdog

– 16-bit timer with 2 input Captures, 2 output Compares, PWM output and clock input

■ 2 communication Interfaces

– Asynchronous serial communications interface

– I2C multimaster interface up to 400 kHz

■ Instruction set

– 63 basic instructions

– 17 main addressing modes

– 8 x 8 unsigned multiply instruction

– True bit manipulation

■ Development tools

– Versatile development tools (under Windows) including assembler, linker, C compiler, archiver, source level debugger, software library, hardware emulator, programming boards and gang programmers, HID and DFU software layers