8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
+1 image
EFM8SB20F64G-B-QFN24
Silicon Labs
1:
¥504.9
2,654 In Stock
NRND
Mouser Part #
634-EFM8SBF64GBQFN24
NRND
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
2,654 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU
EFM8LB12F64ES1-C-QFN24R
Silicon Labs
1:
¥578
5,732 In Stock
Mouser Part #
634-LB12F64ES1CFN24R
Silicon Labs
8-bit Microcontrollers - MCU
5,732 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
EFM8LB11F32E-C-QFN24
Silicon Labs
1:
¥463.4
723 In Stock
Mouser Part #
634-LB11F32ECQFN24
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
723 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU
+1 image
EFM8UB20F32G-B-QFN32
Silicon Labs
1:
¥536.5
587 In Stock
NRND
Mouser Part #
634-EFM8UBF32GBQFN32
NRND
Silicon Labs
8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU
587 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM)
C8051F321-GM
Silicon Labs
1:
¥2,491.5
1,533 In Stock
NRND
Mouser Part #
634-C8051F321-GM
NRND
Silicon Labs
8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM)
1,533 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F8G-A-QFN20R
Silicon Labs
1:
¥152.8
63,706 In Stock
1,500 On Order
Mouser Part #
634-8BB10F8GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
63,706 In Stock
1,500 On Order
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU
+2 images
EFM8UB10F8G-C-QFN20R
Silicon Labs
1:
¥235.9
50,213 In Stock
Mouser Part #
634-8UB10F8GCQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU
50,213 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64G-D-QFP32R
Silicon Labs
1:
¥536.5
8,637 In Stock
Mouser Part #
634-EF8BB31F64GDP32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
8,637 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
500
Details
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
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
+1 image
EFM8LB10F16E-C-QFP32
Silicon Labs
1:
¥465.1
1,249 In Stock
NRND
Mouser Part #
634-LB10F16ECQFP32
NRND
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
1,249 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F2G-A-QFN20R
Silicon Labs
1:
¥142.8
15,521 In Stock
Mouser Part #
634-8BB10F2GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
15,521 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F2G-A-QFN20
Silicon Labs
1:
¥220.9
7,303 In Stock
Mouser Part #
634-8SB10F2GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
7,303 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F2G-A-QFN20R
Silicon Labs
1:
¥225.9
3,318 In Stock
16,500 Expected 12/4/2026
Mouser Part #
634-8SB10F2GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
3,318 In Stock
16,500 Expected 12/4/2026
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
EFM8SB10F8G-A-QFN24R
Silicon Labs
1:
¥290.7
3,031 In Stock
Mouser Part #
634-8SB10F8GAQF24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
3,031 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB21F16I-C-QSOP24
Silicon Labs
1:
¥317.3
3,126 In Stock
End of Life
Mouser Part #
634-8BB21F16ICQSOP24
End of Life
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
3,126 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16I-C-QFN20
Silicon Labs
1:
¥290.7
3,229 In Stock
Mouser Part #
634-8BB21F16I-CQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
3,229 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F8G-A-CSP16R
Silicon Labs
1:
¥330.5
4,899 In Stock
7,500 On Order
Mouser Part #
634-8SB10F8GA-CSP16R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
4,899 In Stock
7,500 On Order
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F64G-D-QFN24R
Silicon Labs
1:
¥609.6
2,120 In Stock
Mouser Part #
634-EF8BB31F64GDF24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
2,120 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F64G-D-QFN24
Silicon Labs
1:
¥420.2
5,887 In Stock
Mouser Part #
634-EF8BB31F64GDQF24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
5,887 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64G-D-QFN32
Silicon Labs
1:
¥463.4
7,223 In Stock
Mouser Part #
634-EF8BB31F64GDQN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
7,223 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F64I-D-4QFN24R
Silicon Labs
1:
¥473.4
993 In Stock
1,500 Expected 11/30/2026
Mouser Part #
634-EF8BB31F64ID424R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
993 In Stock
1,500 Expected 11/30/2026
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F64I-D-4QFN24
Silicon Labs
1:
¥498.3
2,758 In Stock
Mouser Part #
634-EF8BB31F64ID4F24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
2,758 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64I-D-QFN32
Silicon Labs
1:
¥509.9
1,517 In Stock
Mouser Part #
634-EF8BB31F64IDQN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
1,517 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB21F16A-C-QFN20
Silicon Labs
1:
¥558.1
2,443 In Stock
Mouser Part #
634-EFM8BB21F16FN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
2,443 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F64E-C-QFN32R
Silicon Labs
1:
¥588
3,867 In Stock
Mouser Part #
634-LB12F64ECQFN32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
3,867 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
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
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F4G-A-QFN20
Silicon Labs
1:
¥265.8
2 In Stock
Mouser Part #
634-8SB10F4GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
2 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
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