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Description: CPU core: ARM7TDMI CPU maximum dominant frequency: 36MHz Working voltage range: 4.5V~5.5V Internal oscillator: programmed FLASH Capacity: 256K@x8bit Total RAM capacity: 16KB Number of GPIO ports: 72 ADC (units/channels/bits): 1@x12ch /10bit peripheral/function/protocol stack: DMA; watchdog; POR； PWM operating temperature range: - 40 ℃~+105 ℃
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