CIP-51 8051 Core 8-bit Microcontrollers - MCU

Results: 184
Select Image Part # Mfr. Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity. Qty. RoHS ECAD Model Core Program Memory Size Data RAM Size Package / Case Maximum Clock Frequency ADC Resolution Number of I/Os Supply Voltage - Min Supply Voltage - Max Mounting Style Data Bus Width Minimum Operating Temperature Maximum Operating Temperature Series Qualification Packaging

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU 2,654In Stock
¥504.9
¥390.3
¥343.8
¥327.2
¥277.4
Min.: 1
Mult.: 1
CIP-51 8051 64 kB 4.25 kB QFN-24 25 MHz 10 bit 16 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C EFM8SB Tube
Silicon Labs 8-bit Microcontrollers - MCU 5,732In Stock
Cut Tape
¥578
¥441.8
¥403.6
¥362.1
Reel
¥274.1
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 64 kB 4.25 kB QFN-24 72 MHz 10 bit/12 bit/14 bit 20 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 105 C EFM8LB1 Reel, Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU 723In Stock
¥463.4
¥343.8
¥315.6
¥282.4
Min.: 1
Mult.: 1
CIP-51 8051 32 kB 2.25 kB QFN-24 72 MHz 10 bit/12 bit/14 bit 20 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 105 C EFM8LB1 Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU 587In Stock
¥536.5
¥426.9
¥378.7
¥350.5
Min.: 1
Mult.: 1
CIP-51 8051 32 kB 2.25 kB QFN-32 48 MHz 10 bit 25 I/O 3.3 V 3.3 V SMD/SMT 8 bit - 40 C + 85 C EFM8UB2 Tube
Silicon Labs 8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM) 1,533In Stock
¥2,491.5
¥2,003.2
¥1,808.8
¥1,695.9
Min.: 1
Mult.: 1
CIP-51 8051 16 kB 2.3 kB QFN-28 25 MHz 10 bit 21 I/O 2.7 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C C8051F321 Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU 63,706In Stock
1,500On Order
Cut Tape
¥152.8
¥129.4
¥106.3
¥99.3
Reel
¥83.1
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 8 kB 512 B QFN-20 25 MHz 12 bit 16 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C EFM8BB1 Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU 50,213In Stock
Cut Tape
¥235.9
¥184.4
¥165.8
¥154.5
Reel
¥137.4
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 8 kB 2.25 kB QFN-20 50 MHz 12 bit 13 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C EFM8UB Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU 8,637In Stock
Cut Tape
¥536.5
¥400.3
¥365.4
¥328.9
Reel
¥257.5
Min.: 1
Mult.: 1
: 500
CIP-51 8051 64 kB 4.35 kB QFP-32 50 MHz 10 bit, 12 bit 28 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU 1,249In Stock
¥465.1
¥345.5
¥317.3
¥284
Min.: 1
Mult.: 1
CIP-51 8051 16 kB 1.25 kB QFP-32 72 MHz 10 bit/12 bit/14 bit 28 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 105 C EFM8LB1 Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU 15,521In Stock
Cut Tape
¥142.8
¥110
¥98.2
¥89.5
Reel
¥73.9
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 2 kB 256 B QFN-20 25 MHz 12 bit 16 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C EFM8BB1 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 7,303In Stock
¥220.9
¥171.1
¥152.5
¥135.5
Min.: 1
Mult.: 1
CIP-51 8051 2 kB 256 B QFN-20 25 MHz 12 bit 16 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 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 3,318In Stock
16,500Expected 12/4/2026
Cut Tape
¥225.9
¥174.4
¥154
¥140.2
Reel
¥126.9
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 2 kB 256 B QFN-20 25 MHz 12 bit 16 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 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 Sleepy Bee MCU 3,031In Stock
Cut Tape
¥290.7
¥229.2
¥204.3
¥186
Reel
¥155.5
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 8 kB 512 B 25 MHz 12 bit 17 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU 3,126In Stock
¥317.3
¥269.1
¥235.9
¥222.6
Min.: 1
Mult.: 1
CIP-51 8051 16 kB 2.3 kB QSOP-24 50 MHz 12 bit 21 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 125 C EFM8BB2 Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU 3,229In Stock
¥290.7
¥245.8
¥215.9
¥201
Min.: 1
Mult.: 1
CIP-51 8051 16 kB 2.3 kB QFN-20 50 MHz 12 bit 16 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 125 C EFM8BB2 Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU 4,899In Stock
7,500On Order
Cut Tape
¥330.5
¥244.2
¥222.6
¥197.7
Reel
¥169.4
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 8 kB 256 B CSP-16 25 MHz 12 bit 13 I/O 3.6 V 2.2 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU 2,120In Stock
Cut Tape
¥609.6
¥411.9
¥382
¥332.2
Reel
¥257.5
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 64 kB 4.35 kB QFN-24 50 MHz 10 bit, 12 bit 20 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU 5,887In Stock
¥420.2
¥353.8
¥308.9
¥289
Min.: 1
Mult.: 1
CIP-51 8051 64 kB 4.35 kB QFN-24 50 MHz 10 bit, 12 bit 20 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU 7,223In Stock
¥463.4
¥357.1
¥325.6
¥292.3
¥282.4
Min.: 1
Mult.: 1
CIP-51 8051 64 kB 4.35 kB QFN-32 50 MHz 10 bit, 12 bit 29 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU 993In Stock
1,500Expected 11/30/2026
Cut Tape
¥473.4
¥352.1
¥322.2
¥289
Reel
¥260.8
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 64 kB 4.35 kB QFN-24 50 MHz 10 bit, 12 bit 20 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 125 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU 2,758In Stock
¥498.3
¥372.1
¥338.8
¥330.5
Min.: 1
Mult.: 1
CIP-51 8051 64 kB 4.35 kB QFN-24 50 MHz 10 bit, 12 bit 20 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 125 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU 1,517In Stock
¥509.9
¥380.4
¥347.1
¥312.3
Min.: 1
Mult.: 1
CIP-51 8051 64 kB 4.35 kB QFN-32 50 MHz 10 bit, 12 bit 29 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 125 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU 2,443In Stock
¥558.1
¥440.2
¥393.7
¥360.4
Min.: 1
Mult.: 1
CIP-51 8051 16 kB 2.25 kB QFN-20 50 MHz 12 bit 16 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 125 C EFM8BB2 AEC-Q100 Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU 3,867In Stock
Cut Tape
¥588
¥456.8
¥406.9
¥373.7
Reel
¥295.7
Min.: 1
Mult.: 1
: 2,500
CIP-51 8051 64 kB 4.25 kB QFN-32 72 MHz 10 bit/12 bit/14 bit 29 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 105 C EFM8LB1 Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU 2In Stock
¥265.8
¥194.3
¥176.1
¥156.6
Min.: 1
Mult.: 1
CIP-51 8051 4 kB 512 B QFN-20 25 MHz 12 bit 16 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Tube