Part Number Manufacturer / Brand Brife Description Part StatusCore ProcessorCore SizeSpeedConnectivityPeripheralsNumber of I/OProgram Memory SizeProgram Memory TypeEEPROM SizeRAM SizeVoltage - Supply (Vcc/Vdd)Data ConvertersOscillator TypeOperating TemperaturePackage / CaseSupplier Device Package
Silicon Labs IC MCU 32BIT 128KB FLASH 81CSP ActiveARM® Cortex®-M332-Bit48MHzI²C, IrDA, SmartCard, SPI, UART/USART, USB OTGBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT65128KB (128K x 8)FLASH
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32K x 81.98 V ~ 3.8 VA/D 8x12b, D/A 1x12bInternal-40°C ~ 85°C (TA)81-UFBGA, CSPBGA81-CSP (4.35x4.27)
Silicon Labs IC MCU 32BIT 256KB FLASH 81CSP ActiveARM® Cortex®-M332-Bit48MHzI²C, IrDA, SmartCard, SPI, UART/USART, USB OTGBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT65256KB (256K x 8)FLASH
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32K x 81.98 V ~ 3.8 VA/D 8x12b, D/A 1x12bInternal-40°C ~ 85°C (TA)81-UFBGA, CSPBGA81-CSP (4.35x4.27)
Silicon Labs IC MCU 32BIT 256KB FLASH 81CSP ActiveARM® Cortex®-M432-Bit48MHzI²C, IrDA, SmartCard, SPI, UART/USART, USB OTGBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT65256KB (256K x 8)FLASH
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32K x 81.98 V ~ 3.8 VA/D 8x12b, D/A 1x12bInternal-40°C ~ 85°C (TA)81-UFBGA, CSPBGA81-CSP (4.35x4.27)