技术特性

• Core
  • ARM7TDMI 32-bit RISC CPU
  • 32 MIPS @ 36 MHz
• Memories
  • Up to 256 Kbytes Flash program memory (10,000 cycles endurance, data retention 20 years @ 85˚ C)
  • 16 Kbytes RAM
• Clock, reset and supply management
  • 4.5 - 5.5V application supply and I/Os
  • Embedded 1.8V regulator for core supply
  • Embedded oscillator running from external 4-8MHz crystal or ceramic resonator
  • Up to 36 MHz CPU frequency with internal PLL
  • 32 kHz or 2 MHz internal RC oscillator, software configurable for fast startup and backup clock
  • Real-time clock for clock-calendar function
  • Wake-up timer driven by internal RC for wake-up from STOP mode
  • 5 power saving modes: SLOW, WFI, LPWFI, STOP and HALT modes
• Nested interrupt controller
  • Fast interrupt handling with multiple vectors
  • 64 maskable IRQs with 64 vectors and 16 priority levels
  • 2 maskable FIQ sources
  • 16 external interrupts, up to 32 wake-up lines
• Up to 112 I/O ports
  • 72/112 multifunctional bidirectional I/Os
• DMA
  • 4 DMA controllers with 4 channels each
• Timers
  • 16-bit watchdog timer (WDG)
  • 6/10 16-bit timers (TIM) each with: 2 input captures, 2 output compares, PWM and pulse counter modes
  • 6 16-bit PWM modules (PWM)
  • 3 16-bit timebase timers with 8-bit prescalers
• 12 communications interfaces
  • 2 I²C interfaces
  • 4 UART asynchronous serial interfaces
  • 3 BSPI synchronous serial interfaces
  • Up to 3 CAN interfaces (2.0B Active)
• 10-bit A/D converter
  • 12/16 channels
  • Conversion time: min. 3μs, range: 0 to 5V
• Development tools support
  • JTAG interface

功能框图