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
4,729 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
4,729 In Stock
Alternative Packaging
1
¥290.7
10
¥245.8
25
¥215.9
100
¥201
250
View
250
¥189.4
500
¥164.4
1,000
¥143.2
2,520
¥133.4
5,040
¥133.2
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 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16G-C-QFN20R
Silicon Labs
1:
¥322.2
59,467 In Stock
58,500 Expected 1/8/2027
Mouser Part #
634-8BB21F16GCQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
59,467 In Stock
58,500 Expected 1/8/2027
Alternative Packaging
1
¥322.2
10
¥267.4
25
¥239.2
100
¥197.7
1,500
¥158.8
3,000
View
250
¥186
500
¥171.1
3,000
¥153
Buy
Min.: 1
Mult.: 1
Reel :
1,500
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
+ 85 C
EFM8BB2
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB22F16G-C-QFN28R
Silicon Labs
1:
¥418.6
2,666 In Stock
Mouser Part #
634-8BB22F16GCQFN28R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
2,666 In Stock
Alternative Packaging
1
¥418.6
10
¥323.9
25
¥294
100
¥249.2
1,500
¥207.6
3,000
View
500
¥222.6
1,000
¥207.6
3,000
¥174.4
Buy
Min.: 1
Mult.: 1
Reel :
1,500
Details
CIP-51 8051
16 kB
2.3 kB
QFN-28
50 MHz
12 bit
22 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB2
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
1
¥317.3
10
¥269.1
100
¥252.5
2,352
¥235.9
5,880
¥176.1
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
+2 images
EFM8BB22F16G-C-QFN28
Silicon Labs
1:
¥348.8
1,412 In Stock
Mouser Part #
634-8BB22F16GCQFN28
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1,412 In Stock
Alternative Packaging
1
¥348.8
10
¥294
25
¥250.8
100
¥237.5
250
View
250
¥234.2
500
¥209.3
1,000
¥177.7
2,500
¥176.1
4,599
¥174.4
Buy
Min.: 1
Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QFN-28
50 MHz
12 bit
22 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB2
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16I-C-QFN20R
Silicon Labs
1:
¥431.9
166 In Stock
Mouser Part #
634-BB21F16ICQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
166 In Stock
Alternative Packaging
1
¥431.9
10
¥280.7
25
¥255.8
100
¥215.9
250
View
1,500
¥157
250
¥202.6
500
¥179.4
1,000
¥157.1
1,500
¥157
Buy
Min.: 1
Mult.: 1
Reel :
1,500
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
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
EFM8BB21F16A-C-QFN20
Silicon Labs
1:
¥681
44 In Stock
2,520 Expected 9/1/2026
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
44 In Stock
2,520 Expected 9/1/2026
Alternative Packaging
1
¥681
10
¥491.7
25
¥446.8
100
¥368.7
250
View
250
¥353.8
500
¥323.9
1,000
¥305.6
2,520
¥300.6
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 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16G-C-QFN20
Silicon Labs
1:
¥267.4
278 In Stock
2,520 Expected 1/8/2027
Mouser Part #
634-8BB21F16GCQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
278 In Stock
2,520 Expected 1/8/2027
Alternative Packaging
1
¥267.4
10
¥227.6
25
¥199.3
100
¥186
250
View
250
¥179.4
500
¥158.1
1,000
¥147.2
2,520
¥142
5,040
¥139.2
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
+ 85 C
EFM8BB2
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16A-C-QFN20R
Silicon Labs
1:
¥740.8
1,498 Expected 9/1/2026
Mouser Part #
634-BB21F16ACQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1,498 Expected 9/1/2026
Alternative Packaging
1
¥740.8
10
¥490
25
¥445.1
100
¥378.7
250
View
1,500
¥315.6
250
¥358.8
500
¥322.2
1,000
¥315.6
1,500
¥315.6
Buy
Min.: 1
Mult.: 1
Reel :
1,500
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
Reel, Cut Tape
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:
¥528.2
1 In Stock
Mouser Part #
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
1
¥528.2
10
¥343.8
25
¥315.6
100
¥270.7
250
View
250
¥255.8
500
¥230.9
1,000
¥192.7
2,500
¥187.7
4,599
¥179.4
Buy
Min.: 1
Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QFN-28
50 MHz
12 bit
22 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
+2 images
EFM8BB22F16I-C-QFN28R
Silicon Labs
1,500:
¥207.6
Non-Stocked Lead-Time 31 Weeks
Mouser Part #
634-8BB22F16ICQFN28R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 31 Weeks
Alternative Packaging
Buy
Min.: 1,500
Mult.: 1,500
Reel :
1,500
Details
CIP-51 8051
16 kB
2.3 kB
QFN-28
50 MHz
12 bit
22 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB2
Reel