Silicon Labs Microcontrollers - MCU

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Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity.
Qty. RoHS Mounting Style
Package / Case
Core
Program Memory Size
Data Bus Width
ADC Resolution
Maximum Clock Frequency
Number of I/Os
Data RAM Size
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Qualification
Packaging
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
1,546In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-16 16 kB 8 bit 12 bit 50 MHz 12 I/O 512 B 1.8 V 5.5 V - 40 C + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
959In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-16 16 kB 8 bit 12 bit 50 MHz 12 I/O 512 B 1.8 V 5.5 V - 40 C + 125 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
Datasheet
706In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-12 4 kB 8 bit 12 bit 50 MHz 9 I/O 512 B 1.8 V 5.5 V - 40 C + 85 C Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
648In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-16 4 kB 8 bit 12 bit 50 MHz 12 I/O 512 B 1.8 V 5.5 V - 40 C + 125 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
995In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-16 8 kB 8 bit 12 bit 50 MHz 12 I/O 512 B 1.8 V 5.5 V - 40 C + 85 C Tube

Silicon Labs ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 512 kB MCU
Datasheet
1,304In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-64 ARM Cortex M4 512 kB 32 bit 2 x 12 bit 72 MHz 56 I/O 192 kB 1.8 V 3.8 V - 40 C + 85 C Tray
Silicon Labs ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 1024 kB USB LCD MCU
Datasheet
378In Stock
Min.: 1
Mult.: 1

SMD/SMT QFP-100 ARM Cortex M4 1.02 MB 32 bit 2 x 12 bit 72 MHz 83 I/O 192 kB 1.8 V 3.8 V - 40 C + 85 C Tray
Silicon Labs ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 1024 kB USB LCD MCU
Datasheet
489In Stock
Min.: 1
Mult.: 1

SMD/SMT QFP-100 ARM Cortex M4 1.02 MB 32 bit 2 x 12 bit 72 MHz 81 I/O 192 kB 1.8 V 3.8 V - 40 C + 85 C Tray

Silicon Labs ARM Microcontrollers - MCU 128k Flash, 16k RAM, AES
Datasheet
1,429In Stock
Min.: 1
Mult.: 1
: 3,000

SMD/SMT QFN-64 ARM Cortex M3 128 kB 32 bit 12 bit 32 MHz 56 I/O 16 kB 1.98 V 3.8 V - 40 C + 85 C Reel, Cut Tape
Silicon Labs ARM Microcontrollers - MCU 128k Flash, 16k RAM, AES
Datasheet
549In Stock
Min.: 1
Mult.: 1
: 1,000

SMD/SMT TQFP-64 ARM Cortex M3 128 kB 32 bit 12 bit 32 MHz 53 I/O 16 kB 1.98 V 3.8 V - 40 C + 85 C Reel, Cut Tape
Silicon Labs ARM Microcontrollers - MCU 64k Flash, 16k RAM, AES
Datasheet
410In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-64 ARM Cortex M3 64 kB 32 bit 12 bit 32 MHz 53 I/O 16 kB 1.98 V 3.8 V - 40 C + 85 C Tray

Silicon Labs ARM Microcontrollers - MCU 1024k Flash, 128k RAM, AES
Datasheet
1,298In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-64 ARM Cortex M3 1.02 MB 32 bit 12 bit 48 MHz 56 I/O 128 kB 1.98 V 3.8 V - 40 C + 85 C Tray

Silicon Labs ARM Microcontrollers - MCU 512k Flash, 128k RAM, AES
Datasheet
494In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-64 ARM Cortex M3 512 kB 32 bit 12 bit 48 MHz 56 I/O 128 kB 1.98 V 3.8 V - 40 C + 85 C Tray

Silicon Labs ARM Microcontrollers - MCU 512k Flash, 128k RAM, AES
Datasheet
410In Stock
Min.: 1
Mult.: 1
: 3,000

SMD/SMT QFN-64 ARM Cortex M3 512 kB 32 bit 12 bit 48 MHz 56 I/O 128 kB 1.98 V 3.8 V - 40 C + 85 C Reel, Cut Tape
Silicon Labs ARM Microcontrollers - MCU 1024k Flash, 128k RAM, AES
Datasheet
440In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 1.02 MB 32 bit 12 bit 48 MHz 85 I/O 128 kB 1.98 V 3.8 V - 40 C + 85 C Tray

Silicon Labs ARM Microcontrollers - MCU 1024k Flash, 128k RAM, USB, AES
Datasheet
963In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT QFN-64 ARM Cortex M3 1.02 MB 32 bit 12 bit 48 MHz 52 I/O 128 kB 1.98 V 3.8 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Silicon Labs ARM Microcontrollers - MCU 1024k Flash, 128k RAM, USB, AES
Datasheet
391In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 1.02 MB 32 bit 12 bit 48 MHz 81 I/O 128 kB 1.98 V 3.8 V - 40 C + 85 C Tray

Silicon Labs ARM Microcontrollers - MCU 1024k Flash, 128k RAM, USB, 8x18 LCD, AES
Datasheet
302In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-64 ARM Cortex M3 1.02 MB 32 bit 12 bit 48 MHz 52 I/O 128 kB 1.98 V 3.8 V - 40 C + 85 C Tray
Silicon Labs ARM Microcontrollers - MCU 1024k Flash, 128k RAM, USB, 8x34 LCD, AES
Datasheet
472In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 1.02 MB 32 bit 12 bit 48 MHz 81 I/O 128 kB 1.98 V 3.8 V - 40 C + 85 C Tray
Silicon Labs ARM Microcontrollers - MCU Leopard Gecko MCU IC 256KB
Datasheet
1,600In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-64 ARM Cortex M3 256 kB 32 bit 12 bit 48 MHz 53 I/O 32 kB 1.98 V 3.8 V - 40 C + 85 C Tray
Silicon Labs ARM Microcontrollers - MCU Leopard Gecko MCU IC 256KB
Datasheet
1,059In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-64 ARM Cortex M3 256 kB 32 bit 12 bit 48 MHz 50 I/O 32 kB 1.98 V 3.8 V - 40 C + 85 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
Datasheet
15,601In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SMD/SMT QFN-20 CIP-51 8051 2 kB 8 bit 12 bit 25 MHz 16 I/O 256 B 2.2 V 3.6 V - 40 C + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
Datasheet
12,661In Stock
73,500Expected 10/2/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SMD/SMT QFN-20 CIP-51 8051 8 kB 8 bit 12 bit 25 MHz 16 I/O 512 B 2.2 V 3.6 V - 40 C + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
Datasheet
3,286In Stock
6,300Expected 10/23/2026
Min.: 1
Mult.: 1

SMD/SMT QFN-20 CIP-51 8051 2 kB 8 bit 12 bit 25 MHz 16 I/O 256 B 1.8 V 3.6 V - 40 C + 85 C Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
Datasheet
3,538In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SMD/SMT QFN-20 CIP-51 8051 2 kB 8 bit 12 bit 25 MHz 16 I/O 256 B 1.8 V 3.6 V - 40 C + 85 C Reel, Cut Tape, MouseReel