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 32KB FLASH 32QFN Discontinued at -ARM® Cortex®-M332-Bit32MHzI²C, IrDA, SmartCard, SPI, UART/USARTBrown-out Detect/Reset, DMA, POR, PWM, WDT2432KB (32K x 8)FLASH
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8K x 81.98 V ~ 3.8 VA/D 4x12b, D/A 1x12bInternal-40°C ~ 85°C (TA)32-VQFN Exposed Pad32-QFN (6x6)
Silicon Labs IC MCU 32BIT 64KB FLASH 64QFN ActiveARM® Cortex®-M332-Bit32MHzI²C, IrDA, SmartCard, SPI, UART/USARTBrown-out Detect/Reset, DMA, POR, PWM, WDT5664KB (64K x 8)FLASH
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16K x 81.98 V ~ 3.8 VA/D 8x12b, D/A 2x12bInternal-40°C ~ 85°C (TA)64-VFQFN Exposed Pad64-QFN (9x9)
Silicon Labs IC MCU 32BIT 64KB FLASH 64TQFP Not For New DesignsARM® Cortex®-M332-Bit32MHzI²C, IrDA, SmartCard, SPI, UART/USARTBrown-out Detect/Reset, DMA, POR, PWM, WDT5364KB (64K x 8)FLASH
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16K x 81.98 V ~ 3.8 VA/D 8x12b, D/A 1x12bInternal-40°C ~ 85°C (TA)64-TQFP64-QFN (9x9)
Silicon Labs IC MCU 32BIT 128KB FLASH 112BGA Not For New DesignsARM® Cortex®-M332-Bit32MHzEBI/EMI, I²C, IrDA, SmartCard, SPI, UART/USARTBrown-out Detect/Reset, DMA, LCD, POR, PWM, WDT90128KB (128K x 8)FLASH
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16K x 81.98 V ~ 3.8 VA/D 8x12b, D/A 2x12bInternal-40°C ~ 85°C (TA)112-LFBGA112-BGA (10x10)
Silicon Labs IC MCU 32BIT 1MB FLASH 120BGA Discontinued at -ARM® Cortex®-M332-Bit48MHzEBI/EMI, I²C, IrDA, SmartCard, SPI, UART/USART, USBBrown-out Detect/Reset, DMA, POR, PWM, WDT931MB (1M x 8)FLASH
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128K x 81.98 V ~ 3.8 VA/D 8x12b, D/A 2x12bInternal-40°C ~ 85°C (TA)120-VFBGA120-BGA (7x7)
Silicon Labs IC MCU 32BIT 64KB FLASH 24QFN ActiveARM® Cortex®-M0+32-Bit25MHzI²C, IrDA, SmartCard, SPI, UART/USART, USBBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT1564KB (64K x 8)FLASH
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8K x 81.98 V ~ 3.8 VA/D 4x12bInternal-40°C ~ 85°C (TA)24-VQFN Exposed Pad24-QFN (5x5)
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)