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8051 microcontroller Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Maximum Operating Temperature	Qualification	Packaging
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB CAN 8-bit MCU C8051F043-GQ Silicon Labs 1: $38.62 5In Stock End of Life	Mfr. Part No. C8051F043-GQ Mouser Part No 634-C8051F043-GQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB CAN 8-bit MCU	Datasheet	5In Stock	$38.62 $29.39 $26.97	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	8051	8 bit	25 MHz	64 kB	4.25 kB	10 bit	32 I/O	2.7 V	3.6 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 8051 50 MHz 128 kB 5 V 8-bit MCU C8051F581-IM Silicon Labs 1: $21.41 106In Stock End of Life	Mfr. Part No. C8051F581-IM Mouser Part No 634-C8051F581-IM End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 128 kB 5 V 8-bit MCU Learn More about Silicon Labs silicon c8051f58x automotive industrial mcus	Datasheet	106In Stock	$21.41 $16.77 $15.61 $14.33 View $14.20 $13.99 $13.83 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-48	8051	8 bit	50 MHz	128 kB	8.25 kB	12 bit	40 I/O	1.8 V	5.25 V	+ 125 C	AEC-Q100	Tube
8-bit Microcontrollers - MCU Single-Cycle 8051 64K ISP Flash AT89LP6440-20MU Microchip Technology 360: $5.78 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. AT89LP6440-20MU Mouser Part No 556-AT89LP6440-20MU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 8051 64K ISP Flash	Datasheet	Non-Stocked Lead-Time 9 Weeks	$5.78	Min.: 360 Mult.: 360	SMD/SMT	VQFN-44	8051	8 bit	20 MHz	64 kB	4.25 kB	10 bit	38 I/O	2.4 V	3.6 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 64KB/4kB RAM, 10b ADC, DC-DC, 0.9V, QFN24 C8051F931-G-GM Silicon Labs 1: $7.13 205In Stock End of Life	Mfr. Part No. C8051F931-G-GM Mouser Part No 634-C8051F931-G-GM End of Life	Silicon Labs	8-bit Microcontrollers - MCU 64KB/4kB RAM, 10b ADC, DC-DC, 0.9V, QFN24 Learn More about Silicon Labs Silicon_Labs_C8051F9xx_MCU	Datasheet	205In Stock	$7.13 $5.66 $5.00 $4.64 View $4.52 $4.34 $4.31 $4.24	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	8051	8 bit	25 MHz	64 kB	4.25 kB	10 bit	16 I/O	1.8 V	3.6 V	+ 85 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V 8-bit MCU C8051F503-IM Silicon Labs 1: $14.97 44In Stock End of Life	Mfr. Part No. C8051F503-IM Mouser Part No 634-C8051F503-IM End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V 8-bit MCU	Datasheet	44In Stock	$14.97 $11.68 $10.87 $9.97 View $9.47 $9.28 $8.80	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	8051	8 bit	50 MHz	64 kB	4.25 kB	12 bit	25 I/O	1.8 V	5.25 V	+ 125 C	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 8bit 67MHz 64KB CY8C3866LTI-030T Infineon Technologies 2,000: $20.54 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3866LTI-030T Mouser Part No 727-CY8C3866LTI-030T	Infineon Technologies	8-bit Microcontrollers - MCU 8051 8bit 67MHz 64KB Learn More about Infineon Technologies cypress psoc	Datasheet	Non-Stocked Lead-Time 10 Weeks	Reel $20.54	Min.: 2,000 Mult.: 2,000 : 2,000	SMD/SMT	QFN-48	8051	8 bit	67 MHz	64 kB	8 kB	20 bit		1.71 V	1.89 V	+ 85 C		Reel
8-bit Microcontrollers - MCU 8051 8bit 67MHz 32KB CY8C3865AXI-019T Infineon Technologies 1,500: $20.30 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3865AXI-019T Mouser Part No 727-CY8C3865AXI-019T	Infineon Technologies	8-bit Microcontrollers - MCU 8051 8bit 67MHz 32KB Learn More about Infineon Technologies cypress psoc	Datasheet	Non-Stocked Lead-Time 10 Weeks	Reel $20.30 Quote Quote	Min.: 1,500 Mult.: 1,500 : 1,500	SMD/SMT	TQFP-100	8051	8 bit	67 MHz	32 kB	4 kB	20 bit		1.71 V	1.89 V	+ 85 C		Reel
8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL AT89LP51-20MU Microchip Technology 720: $1.78 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. AT89LP51-20MU Mouser Part No 556-AT89LP51-20MU	Microchip Technology	8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL Learn More about Microchip Technology atmelat89lp52	Datasheet	Non-Stocked Lead-Time 13 Weeks	$1.78	Min.: 720 Mult.: 360	SMD/SMT	VQFN-44	8051	8 bit	20 MHz	4 kB	256 B	No ADC	36 I/O	2.4 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V CY8C3866AXI-039 Infineon Technologies 450: $23.73 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3866AXI-039 Mouser Part No 727-CY8C3866AXI-039	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$23.73 View Quote	Min.: 450 Mult.: 450	SMD/SMT	TQFP-100	8051	8 bit	67 MHz	64 kB	8 kB	20 bit	72 I/O	1.71 V	1.89 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V CY8C3666LTI-050 Infineon Technologies 520: $19.45 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3666LTI-050 Mouser Part No 727-CY8C3666LTI-050	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$19.45 View Quote	Min.: 520 Mult.: 520	SMD/SMT	QFN-48	8051	8 bit	67 MHz	64 kB	8 kB	12 bit	31 I/O	1.71 V	1.89 V	+ 85 C		Tray
8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU AT89LP52-20MU Microchip Technology 720: $1.78 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. AT89LP52-20MU Mouser Part No 556-AT89LP52-20MU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU Learn More about Microchip Technology atmelat89lp52	Datasheet	Non-Stocked Lead-Time 13 Weeks	$1.78	Min.: 720 Mult.: 360	SMD/SMT	VQFN-44	8051	8 bit	20 MHz	8 kB	256 B	No ADC	36 I/O	2.4 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3245AXI-166 Infineon Technologies 450: $9.29 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3245AXI-166 Mouser Part No 727-CY8C3245AXI-166	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$9.29 $9.28 View Quote	Min.: 450 Mult.: 450	SMD/SMT	TQFP-100	8051	8 bit	50 MHz	32 kB	4 kB		72 I/O	1.71 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V CY8C3866AXI-035 Infineon Technologies 900: $23.31 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3866AXI-035 Mouser Part No 727-CY8C3866AXI-035	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$23.31 View Quote	Min.: 900 Mult.: 900	SMD/SMT	TQFP-100	8051	8 bit	67 MHz	64 kB	8 kB	20 bit	70 I/O	1.71 V	1.89 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 16K Flash 50MHz 8051 1.71V to 5.5V CY8C3444LTI-119 Infineon Technologies 1,300: $9.60 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3444LTI-119 Mouser Part No 727-CY8C3444LTI-119	Infineon Technologies	8-bit Microcontrollers - MCU 16K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$9.60 View Quote	Min.: 1,300 Mult.: 1,300	SMD/SMT	QFN-48	8051	8 bit	50 MHz	16 kB	2 kB	12 bit	29 I/O	1.71 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3445LTI-078 Infineon Technologies 520: $10.57 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3445LTI-078 Mouser Part No 727-CY8C3445LTI-078	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$10.57 $10.28 View Quote	Min.: 520 Mult.: 520	SMD/SMT	QFN-48	8051	8 bit	50 MHz	32 kB	4 kB	12 bit	29 I/O	1.71 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V CY8C3666AXI-036 Infineon Technologies 1: $27.05 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3666AXI-036 Mouser Part No 727-CY8C3666AXI-036	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$27.05 $21.71 $18.88 $18.28 View $16.96 $16.01 Quote	Min.: 180 Mult.: 180	SMD/SMT	TQFP-100	8051	8 bit	67 MHz	64 kB	8 kB	12 bit	28 I/O	1.71 V	1.89 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 16K Flash 50MHz 8051 1.71V to 5.5V CY8C3244LTI-123 Infineon Technologies 520: $7.77 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3244LTI-123 Mouser Part No 727-CY8C3244LTI-123	Infineon Technologies	8-bit Microcontrollers - MCU 16K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$7.77 $7.45 View Quote	Min.: 520 Mult.: 520	SMD/SMT	QFN-48	8051	8 bit	50 MHz	16 kB	2 kB	12 bit	29 I/O	1.71 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 32K Flash 67MHz 8051 0.5V to 5.5V CY8C3865LTI-014 Infineon Technologies 1,300: $18.51 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3865LTI-014 Mouser Part No 727-CY8C3865LTI-014	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$18.51 View Quote	Min.: 1,300 Mult.: 1,300	SMD/SMT	QFN-68	8051	8 bit	67 MHz	32 kB	8 kB	20 bit	28 I/O	1.71 V	1.89 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3445LTI-079 Infineon Technologies 2,600: $10.65 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3445LTI-079 Mouser Part No 727-CY8C3445LTI-079	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$10.65 Quote Quote	Min.: 2,600 Mult.: 2,600	SMD/SMT	QFN-68	8051	8 bit	50 MHz	32 kB	4 kB	12 bit	46 I/O	1.71 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3446AXI-099 Infineon Technologies 1: $21.91 179Expected 9/12/2026	Mfr. Part No. CY8C3446AXI-099 Mouser Part No 727-CY8C3446AXI-099	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	179Expected 9/12/2026	$21.91 $17.31 $14.97 $14.39 View $13.74 $13.42 $13.41 Quote	Min.: 1 Mult.: 1	SMD/SMT	TQFP-100	8051	8 bit	50 MHz	64 kB	8 kB	12 bit	72 I/O	1.71 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 16K Flash 50MHz 8051 1.71V to 5.5V CY8C3244PVI-133 Infineon Technologies 1: $14.18 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3244PVI-133 Mouser Part No 727-CY8C3244PVI-133	Infineon Technologies	8-bit Microcontrollers - MCU 16K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$14.18 $10.96 $10.46 $7.77 View $7.74 $7.11 $7.10 Quote	Min.: 600 Mult.: 600	SMD/SMT	SSOP-48	8051	8 bit	50 MHz	16 kB	2 kB	12 bit	29 I/O	1.71 V	5.5 V	+ 85 C		Tube
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3245PVI-150 Infineon Technologies 600: $8.65 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3245PVI-150 Mouser Part No 727-CY8C3245PVI-150	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$8.65 $8.36 View Quote	Min.: 600 Mult.: 600	SMD/SMT	SSOP-48	8051	8 bit	50 MHz	32 kB	4 kB	12 bit	31 I/O	1.71 V	5.5 V	+ 85 C		Tube
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3445AXI-104 Infineon Technologies 450: $11.95 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3445AXI-104 Mouser Part No 727-CY8C3445AXI-104	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$11.95 $11.75 View Quote	Min.: 450 Mult.: 450	SMD/SMT	TQFP-100	8051	8 bit	50 MHz	32 kB	4 kB	12 bit	70 I/O	1.71 V	5.5 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 32K Flash 67MHz 8051 0.5V to 5.5V CY8C3665LTI-044 Infineon Technologies 1,300: $13.12 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3665LTI-044 Mouser Part No 727-CY8C3665LTI-044	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$13.12 View Quote	Min.: 1,300 Mult.: 1,300	SMD/SMT	QFN-68	8051	8 bit	67 MHz	32 kB	4 kB	12 bit	48 I/O	1.71 V	1.89 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V CY8C3666AXI-037 Infineon Technologies 180: $16.56 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. CY8C3666AXI-037 Mouser Part No 727-CY8C3666AXI-037	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	Non-Stocked Lead-Time 10 Weeks	$16.56 $15.64 View Quote	Min.: 180 Mult.: 180	SMD/SMT	TQFP-100	8051	8 bit	67 MHz	64 kB	8 kB	12 bit	70 I/O	1.71 V	1.89 V	+ 85 C		Tray