Features
• Core: ARM 32-bit Cortex™-M3 CPU (120 MHz 
max) with Adaptive real-time accelerator (ART 
Accelerator™ allowing 0-wait state execution 
performance from Flash memory, MPU, 
150 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1)
• Memories
– Up to 1 Mbyte of Flash memory
– 512 bytes of OTP memory
– Up to 128 + 4 Kbytes of SRAM
– Flexible static memory controller that 
supports Compact Flash, SRAM, PSRAM, 
NOR and NAND memories
– LCD parallel interface, 8080/6800 modes
• Clock, reset and supply management
– From 1.8 to 3.6 V application supply+I/Os
– POR, PDR, PVD and BOR
– 4 to 26 MHz crystal oscillator
– Internal 16 MHz factory-trimmed RC
– 32 kHz oscillator for RTC with calibration
– Internal 32 kHz RC with calibration
• Low power
– Sleep, Stop and Standby modes
– VBAT supply for RTC, 20 × 32 bit backup 
registers, and optional 4 KB backup SRAM
• 3 × 12-bit, 0.5 µs ADCs with up to 24 channels 
and up to 6 MSPS in triple interleaved mode
• 2 × 12-bit D/A converters
• General-purpose DMA: 16-stream controller 
with centralized FIFOs and burst support
• Up to 17 timers
– Up to twelve 16-bit and two 32-bit timers, 
up to 120 MHz, each with up to 4 
IC/OC/PWM or pulse counter and 
quadrature (incremental) encoder input
• Debug mode: Serial wire debug (SWD), JTAG, 
and Cortex-M3 Embedded Trace Macrocell™
• Up to 140 I/O ports with interrupt capability:
– Up to 136 fast I/Os up to 60 MHz
– Up to 138 5 V-tolerant I/Os
• Up to 15 communication interfaces
– Up to 3 × I2C interfaces (SMBus/PMBus)
– Up to 4 USARTs and 2 UARTs (7.5 Mbit/s, 
ISO 7816 interface, LIN, IrDA, modem ctrl)
– Up to 3 SPIs (30 Mbit/s), 2 with muxed I2S 
to achieve audio class accuracy via audio 
PLL or external PLL
– 2 × CAN interfaces (2.0B Active)
– SDIO interface
• Advanced connectivity
– USB 2.0 full-speed device/host/OTG 
controller with on-chip PHY
– USB 2.0 high-speed/full-speed 
device/host/OTG controller with dedicated 
DMA, on-chip full-speed PHY and ULPI

– 10/100 Ethernet MAC with dedicate