8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F4G-A-QFN20
Silicon Labs
1:
$1.22
218 In Stock
Mouser Part No
634-8BB10F4GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU
218 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-20
CIP-51 8051
8 bit
25 MHz
4 kB
512 B
12 bit
16 I/O
- 40 C
+ 85 C
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F32I-D-4QFN24
Silicon Labs
1:
$2.41
375 In Stock
Mouser Part No
634-EF8BB31F32ID4F24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
375 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-24
CIP-51 8051
8 bit
50 MHz
32 kB
2.3 kB
10 bit, 12 bit
20 I/O
- 40 C
+ 125 C
Tube
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
+1 image
CY8C3246LTI-149
Infineon Technologies
1:
$14.36
8 In Stock
Mouser Part No
727-CY8C3246LTI-149
Infineon Technologies
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
8 In Stock
Alternative Packaging
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Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-68
8051
8 bit
50 MHz
64 kB
8 kB
12 bit
46 I/O
- 40 C
+ 85 C
Tray
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V
AT89C51RC-24PU
Microchip Technology
1:
$5.17
999 In Stock
Mouser Part No
556-A89C51RC-24PU
Microchip Technology
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V
999 In Stock
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Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
Through Hole
PDIP-40
8051
8 bit
24 MHz
32 kB
512 B
No ADC
32 I/O
- 40 C
+ 85 C
Tube
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
CY8C3246LTI-162
Infineon Technologies
1:
$12.40
2 In Stock
Mouser Part No
727-CY8C3246LTI-162
Infineon Technologies
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
2 In Stock
Alternative Packaging
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Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-48
8051
8 bit
50 MHz
64 kB
8 kB
12 bit
29 I/O
- 40 C
+ 85 C
Tray
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
EFM8LB10F16E-C-QFN24
Silicon Labs
1:
$2.25
90 In Stock
Mouser Part No
634-LB10F16ECQFN24
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
90 In Stock
Alternative Packaging
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Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-24
CIP-51 8051
8 bit
72 MHz
16 kB
1.25 kB
10 bit/12 bit/14 bit
20 I/O
- 40 C
+ 105 C
Tube
8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL
AT89LP3240-20AU
Microchip Technology
1:
$10.49
60 In Stock
Mouser Part No
556-AT89LP3240-20AU
Microchip Technology
8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL
60 In Stock
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
TQFP-44
8051
8 bit
20 MHz
32 kB
4.25 kB
10 bit
38 I/O
- 40 C
+ 85 C
Tray
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
+1 image
EFM8LB11F16E-C-QFP32
Silicon Labs
1:
$3.00
36 In Stock
NRND
Mouser Part No
634-LB11F16ECQFP32
NRND
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
36 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFP-32
CIP-51 8051
8 bit
72 MHz
16 kB
1.25 kB
10 bit/12 bit/14 bit
28 I/O
- 40 C
+ 105 C
Tray
8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC
AT89S2051-24SU
Microchip Technology
1:
$2.61
3 In Stock
Mouser Part No
556-A89S2051-24SU
Microchip Technology
8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC
3 In Stock
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Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
SOIC-20
8051
8 bit
24 MHz
2 kB
256 B
No ADC
15 I/O
- 40 C
+ 85 C
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F8G-A-QFN20
Silicon Labs
1:
$1.64
17,031 On Order
Mouser Part No
634-8SB10F8GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
17,031 On Order
View Dates
Alternative Packaging
On Order:
2,331 Expected 10/11/2026
14,700 Expected 18/12/2026
Factory Lead Time:
12 Weeks
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-20
CIP-51 8051
8 bit
25 MHz
8 kB
512 B
12 bit
16 I/O
- 40 C
+ 85 C
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
EFM8UB10F16G-C-QFN20R
Silicon Labs
1:
$2.64
49,037 On Order
Mouser Part No
634-8UB10F16GCQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
49,037 On Order
View Dates
Alternative Packaging
On Order:
40,037 Expected 08/01/2027
9,000 Expected 12/01/2027
Factory Lead Time:
31 Weeks
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-20
CIP-51 8051
8 bit
50 MHz
16 kB
2.25 kB
12 bit
13 I/O
- 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
EFM8BB21F16G-C-QFN20R
Silicon Labs
1:
$1.60
93,467 Expected 08/01/2027
Mouser Part No
634-8BB21F16GCQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
93,467 Expected 08/01/2027
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-20
CIP-51 8051
8 bit
50 MHz
16 kB
2.3 kB
12 bit
16 I/O
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
+1 image
EFM8LB12F64E-C-QFP32
Silicon Labs
1:
$3.96
23,750 On Order
NRND
Mouser Part No
634-LB12F64ECQFP32
NRND
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
23,750 On Order
View Dates
Alternative Packaging
On Order:
6,250 Expected 08/01/2027
17,500 Expected 15/01/2027
Factory Lead Time:
26 Weeks
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFP-32
CIP-51 8051
8 bit
72 MHz
64 kB
4.25 kB
10 bit/12 bit/14 bit
28 I/O
- 40 C
+ 105 C
Tray
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F8G-A-QFN20
Silicon Labs
1:
$1.20
2,519 Expected 17/11/2026
Mouser Part No
634-8BB10F8GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
2,519 Expected 17/11/2026
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-20
CIP-51 8051
8 bit
25 MHz
8 kB
512 B
12 bit
16 I/O
- 40 C
+ 85 C
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB10F8I-A-QFN20
Silicon Labs
1:
$1.35
2,520 Expected 04/12/2026
Mouser Part No
634-FM8BB10F8IAQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
2,520 Expected 04/12/2026
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-20
CIP-51 8051
8 bit
25 MHz
8 kB
512 B
12 bit
16 I/O
- 40 C
+ 125 C
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+4 images
EFM8BB10F8G-A-SOIC16
Silicon Labs
1:
$1.24
3,017 Expected 27/11/2026
Mouser Part No
634-8BB10F8GASO16
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
3,017 Expected 27/11/2026
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
SOIC-16
CIP-51 8051
8 bit
25 MHz
8 kB
512 B
12 bit
13 I/O
- 40 C
+ 85 C
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
+1 image
EFM8SB20F32G-B-QFN24R
Silicon Labs
1:
$2.48
1,498 Expected 01/01/2027
Mouser Part No
634-EFM8SB32GBQFN24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
1,498 Expected 01/01/2027
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Reel :
1,500
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-24
CIP-51 8051
8 bit
25 MHz
32 kB
4.25 kB
10 bit
16 I/O
- 40 C
+ 85 C
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 12MHZ 4V-5.5V
AT89C4051-12SU
Microchip Technology
1:
$1.50
552 On Order
Mouser Part No
556-A89C405112SU
Microchip Technology
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 12MHZ 4V-5.5V
552 On Order
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
SOIC-20
8051
8 bit
12 MHz
4 kB
128 B
No ADC
15 I/O
- 40 C
+ 85 C
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB22F16I-C-QFN28
Silicon Labs
1:
$2.25
1 In Stock
Mouser Part No
634-8BB22F16ICQFN28
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1 In Stock
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-28
CIP-51 8051
8 bit
50 MHz
16 kB
2.3 kB
12 bit
22 I/O
- 40 C
+ 125 C
Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F32G-C-TSSOP20
Silicon Labs
1:
$1.39
197 Expected 18/12/2026
Mouser Part No
634-EFM852F32GCTOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU
197 Expected 18/12/2026
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
TSSOP-20
16 kB
1.28 kB
16 I/O
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
EFM8SB10F8G-A-CSP16
Silicon Labs
1:
$1.90
3,550 On Order
NRND
Mouser Part No
634-8SB10F8G-A-CSP16
NRND
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
3,550 On Order
View Dates
Alternative Packaging
On Order:
1,150 Expected 06/11/2026
2,400 Expected 10/11/2026
Factory Lead Time:
20 Weeks
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
CSP-16
CIP-51 8051
8 bit
25 MHz
8 kB
512 B
12 bit
13 I/O
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU
EFM8BB52F32I-C-TSSOP28
Silicon Labs
1:
$1.41
200 Expected 04/12/2026
Mouser Part No
634-EFM852F32ICTOP28
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU
200 Expected 04/12/2026
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
TSSOP-28
16 kB
1.28 kB
16 I/O
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F16G-C-TSSOP20
Silicon Labs
1:
$1.14
179 On Order
Mouser Part No
634-EFM852F16GCTOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
179 On Order
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
TSSOP-20
16 kB
1.28 kB
16 I/O
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F16I-C-TSSOP20
Silicon Labs
1:
$1.17
198 Expected 01/01/2027
Mouser Part No
634-EFM852F16ITSOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
198 Expected 01/01/2027
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
TSSOP-20
16 kB
1.28 kB
16 I/O
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
EFM8UB10F16G-C-QFN28
Silicon Labs
1:
$2.63
526 Expected 08/01/2027
Mouser Part No
634-8UB10F16GCQFN28
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
526 Expected 08/01/2027
Alternative Packaging
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU
SMD/SMT
QFN-28
CIP-51 8051
8 bit
50 MHz
16 kB
2.25 kB
12 bit
22 I/O
- 40 C
+ 85 C
Tube