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256 kB Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package / Case	Core	Program Memory Size	Data Bus Width	ADC Resolution	Maximum Clock Frequency	Number of I/Os	Data RAM Size	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
ARM Microcontrollers - MCU High-performance access line, Arm Cortex-M4 core DSP & FPU, 256 Kbytes of Flash STM32F401VCT7 STMicroelectronics 1: $8.51 477In Stock	Mfr. Part # STM32F401VCT7 Mouser Part # 511-STM32F401VCT7	STMicroelectronics	ARM Microcontrollers - MCU High-performance access line, Arm Cortex-M4 core DSP & FPU, 256 Kbytes of Flash Learn More about STMicroelectronics stm32f4	Datasheet	477In Stock	$8.51 $6.20 $5.71 $5.18 View $5.05 $4.62	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M4	256 kB	32 bit	12 bit	84 MHz	81 I/O	64 kB	1.7 V	3.6 V	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU High-performance foundation line, Arm Cortex-M4 core DSP & FPU, 256 Kbytes of Fl STM32F446VCT6 STMicroelectronics 1: $10.29 322In Stock	Mfr. Part # STM32F446VCT6 Mouser Part # 511-STM32F446VCT6	STMicroelectronics	ARM Microcontrollers - MCU High-performance foundation line, Arm Cortex-M4 core DSP & FPU, 256 Kbytes of Fl Learn More about STMicroelectronics stm32f4	Datasheet	322In Stock	$10.29 $7.59 $7.23 $6.51 View $6.33 $5.70 $5.60 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M4	256 kB	32 bit	3 x 12 bit	180 MHz	81 I/O	128 kB	1.7 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU High-performance foundation line, Arm Cortex-M4 core DSP & FPU, 256 Kbytes of Fl STM32F446VCT7 STMicroelectronics 1: $10.13 710In Stock	Mfr. Part # STM32F446VCT7 Mouser Part # 511-STM32F446VCT7	STMicroelectronics	ARM Microcontrollers - MCU High-performance foundation line, Arm Cortex-M4 core DSP & FPU, 256 Kbytes of Fl Learn More about STMicroelectronics stm32f4	Datasheet	710In Stock	$10.13 $7.33 $6.77 $6.42 View $6.24 $6.07 $5.57 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M4	256 kB	32 bit	3 x 12 bit	180 MHz	81 I/O	128 kB	1.8 V	3.6 V	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU Value Line M3 ARM 32 Kbytes 32 MHz STM32L100RCT6 STMicroelectronics 1: $8.18 665In Stock	Mfr. Part # STM32L100RCT6 Mouser Part # 511-STM32L100RCT6	STMicroelectronics	ARM Microcontrollers - MCU Value Line M3 ARM 32 Kbytes 32 MHz Learn More about STMicroelectronics stm32l1	Datasheet	665In Stock	$8.18 $6.32 $5.57 $5.20 View $4.89 $4.88	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	256 kB	32 bit	12 bit	32 MHz	51 I/O	16 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra Low M3 ARM 256 Kbytes 32 MHz STM32L152CCT6 STMicroelectronics 1: $8.30 1,016In Stock	Mfr. Part # STM32L152CCT6 Mouser Part # 511-STM32L152CCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra Low M3 ARM 256 Kbytes 32 MHz Learn More about STMicroelectronics stm32l1	Datasheet	1,016In Stock	$8.30 $6.45 $5.90 $5.48 View $5.26 $5.07 $5.02 $5.01	Min.: 1 Mult.: 1	SMD/SMT	LQFP-48	ARM Cortex M3	256 kB	32 bit	12 bit	32 MHz	37 I/O	32 kB	1.65 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra Low M3 ARM 256 Kbytes 32 MHz STM32L152RCT6 STMicroelectronics 1: $8.94 789In Stock	Mfr. Part # STM32L152RCT6 Mouser Part # 511-STM32L152RCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra Low M3 ARM 256 Kbytes 32 MHz Learn More about STMicroelectronics stm32l1	Datasheet	789In Stock	$8.94 $6.92 $6.11 $5.71 View $5.49 $5.15 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	256 kB	32 bit	12 bit	32 MHz	51 I/O	32 kB	1.65 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash STM32L431RCI6 STMicroelectronics 1: $5.81 1,840In Stock	Mfr. Part # STM32L431RCI6 Mouser Part # 511-STM32L431RCI6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash Learn More about STMicroelectronics stm stm32l4 mcu fpu	Datasheet	1,840In Stock	$5.81 $4.43 $3.88 $3.71	Min.: 1 Mult.: 1 Max.: 300	SMD/SMT	UFBGA-64	ARM Cortex M4	256 kB	32 bit	12 bit	80 MHz	52 I/O	64 kB	1.71 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash , LCD, USB STM32L433CCT6 STMicroelectronics 1: $6.11 2,050In Stock 1,500On Order	Mfr. Part # STM32L433CCT6 Mouser Part # 511-STM32L433CCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash , LCD, USB Learn More about STMicroelectronics stm stm32l4 mcu fpu	Datasheet	2,050In Stock 1,500On Order	$6.11 $4.67 $4.09 $3.91 $3.61	Min.: 1 Mult.: 1 Max.: 500	SMD/SMT	LQFP-48	ARM Cortex M4	256 kB	32 bit	12 bit	80 MHz	38 I/O	64 kB	1.71 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash , LCD, USB STM32L433CCU3 STMicroelectronics 1: $7.42 783In Stock 1,560On Order	Mfr. Part # STM32L433CCU3 Mouser Part # 511-STM32L433CCU3	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash , LCD, USB Learn More about STMicroelectronics stm stm32l4 mcu fpu	Datasheet	783In Stock 1,560On Order	$7.42 $5.55 $5.04 $4.59 $4.46	Min.: 1 Mult.: 1 Max.: 250	SMD/SMT	QFN-48	ARM Cortex M4	256 kB	32 bit	12 bit	80 MHz	38 I/O	64 kB	1.71 V	3.6 V	- 40 C	+ 125 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash LCD, USB, AES-2 STM32L443CCU6 STMicroelectronics 1: $7.32 1,022In Stock	Mfr. Part # STM32L443CCU6 Mouser Part # 511-STM32L443CCU6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash LCD, USB, AES-2 Learn More about STMicroelectronics stm stm32l4 mcu fpu	Datasheet	1,022In Stock	$7.32 $5.38 $5.01 $4.41 $4.18	Min.: 1 Mult.: 1 Max.: 300	SMD/SMT	QFN-48	ARM Cortex M4	256 kB	32 bit	12 bit	80 MHz	38 I/O	64 kB	1.71 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash LCD, USB, AES-2 STM32L443RCT6 STMicroelectronics 1: $6.87 2,488In Stock	Mfr. Part # STM32L443RCT6 Mouser Part # 511-STM32L443RCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash LCD, USB, AES-2 Learn More about STMicroelectronics stm stm32l4 mcu fpu	Datasheet	2,488In Stock	$6.87 $5.27 $4.63 $4.43 $4.10	Min.: 1 Mult.: 1 Max.: 500	SMD/SMT	LQFP-64	ARM Cortex M4	256 kB	32 bit	12 bit	80 MHz	52 I/O	64 kB	1.71 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 kbytes of Flash , DFSDM STM32L451VCT6 STMicroelectronics 1: $7.83 1,672In Stock	Mfr. Part # STM32L451VCT6 Mouser Part # 511-STM32L451VCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 kbytes of Flash , DFSDM Learn More about STMicroelectronics stm stm32l4 mcu fpu	Datasheet	1,672In Stock	$7.83 $5.59 $5.15 $5.01 $4.83	Min.: 1 Mult.: 1 Max.: 500	SMD/SMT	LQFP-100	ARM Cortex M4	256 kB	32 bit	12 bit	80 MHz	83 I/O	160 kB	1.71 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 kbytes of Flash USB Device, DFS STM32L452CCU6 STMicroelectronics 1: $7.48 1,474In Stock	Mfr. Part # STM32L452CCU6 Mouser Part # 511-STM32L452CCU6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 kbytes of Flash USB Device, DFS Learn More about STMicroelectronics stm stm32l4 mcu fpu	Datasheet	1,474In Stock	$7.48 $5.50 $5.12 $4.50 View $4.27 $3.83	Min.: 1 Mult.: 1 Max.: 500	SMD/SMT	QFN-48	ARM Cortex M4	256 kB	32 bit	12 bit	80 MHz	38 I/O	160 kB	1.71 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash LCD, USB OTG, D STM32L476VCT6 STMicroelectronics 1: $9.53 778In Stock 7,560On Order	Mfr. Part # STM32L476VCT6 Mouser Part # 511-STM32L476VCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 256 Kbytes of Flash LCD, USB OTG, D Learn More about STMicroelectronics stm stm32l4 mcu fpu	Datasheet	778In Stock 7,560On Order On Order Ship Dates Mfr. #: STM32L476VCT6 Stock: 778 Can Ship Immediately On Order: 1,620 Expected 2/24/2027 5,940 TBD Factory Lead-Time: 52 Weeks	$9.53 $6.86 $6.40 $5.98 $5.54	Min.: 1 Mult.: 1 Max.: 500	SMD/SMT	LQFP-100	ARM Cortex M4	256 kB	32 bit	3 x 12 bit	80 MHz	82 I/O	128 kB	1.71 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash STM32L552RCT6 STMicroelectronics 1: $10.38 840In Stock	Mfr. Part # STM32L552RCT6 Mouser Part # 511-STM32L552RCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	840In Stock	$10.38 $8.07 $7.15 $6.70	Min.: 1 Mult.: 1 Max.: 250	SMD/SMT	LQFP-64	ARM Cortex M33	256 kB	32 bit	2 x 12 bit	110 MHz	52 I/O	256 kB	1.71 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power dual core Arm Cortex-M4 64MHz Cortex-M0+ 32MHz 256Kbytes Flash STM32WB35CCU6A STMicroelectronics 1: $6.71 1,680In Stock	Mfr. Part # STM32WB35CCU6A Mouser Part # 511-STM32WB35CCU6A	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power dual core Arm Cortex-M4 64MHz Cortex-M0+ 32MHz 256Kbytes Flash Learn More about STMicroelectronics stm stm32wb wireless mcu	Datasheet	1,680In Stock	$6.71 $5.58 $5.33 $4.81 View $4.73 $4.55 $4.38	Min.: 1 Mult.: 1	SMD/SMT	UFQFPN-48	ARM Cortex M4	256 kB	32 bit	12 bit	32 MHz	72 I/O	256 kB	1.71 V	3.6 V	- 40 C	+ 105 C	Tray
32-bit Microcontrollers - MCU 256KB, 144LQFP Ind AT32UC3A3256-ALUT Microchip Technology 1: $16.02 335In Stock 480Expected 11/11/2026	Mfr. Part # AT32UC3A3256-ALUT Mouser Part # 556-AT32UC3A3256ALUT	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144LQFP Ind Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	335In Stock 480Expected 11/11/2026	$16.02 $14.56 $13.19	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	AVR	256 kB	32 bit	10 bit	84 MHz	110 I/O	128 kB	3 V	3.6 V	- 40 C	+ 85 C	Tray
32-bit Microcontrollers - MCU 32-bit AT32UC3B1256-AUT Microchip Technology 1: $8.63 712In Stock 1,000Expected 1/5/2027	Mfr. Part # AT32UC3B1256-AUT Mouser Part # 556-AT32UC3B1256-AUT	Microchip Technology	32-bit Microcontrollers - MCU 32-bit Learn More about Microchip Technology microchip b series mcus	Datasheet	712In Stock 1,000Expected 1/5/2027	$8.63 $7.84 $7.11	Min.: 1 Mult.: 1	SMD/SMT	TQFP-48	AVR	256 kB	32 bit	10 bit	60 MHz	28 I/O	32 kB	1.65 V	1.95 V	- 40 C	+ 85 C	Tray
32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM AT32UC3C2256C-A2UR Microchip Technology 1: $12.44 609In Stock	Mfr. Part # AT32UC3C2256C-A2UR Mouser Part # 556-AT32UC3C2256CA2R	Microchip Technology	32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	609In Stock	Cut Tape $12.44 $12.02 Reel $10.25	Min.: 1 Mult.: 1 : 1,500			AVR	256 kB	32 bit		66 MHz	45 I/O	64 kB	3 V	5.5 V	- 40 C	+ 85 C	Reel, Cut Tape
32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM AT32UC3C2256C-A2UT Microchip Technology 1: $12.24 337In Stock 800Expected 12/10/2026	Mfr. Part # AT32UC3C2256C-A2UT Mouser Part # 556-AT32UC3C2256CA2T	Microchip Technology	32-bit Microcontrollers - MCU UC3C 512K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	337In Stock 800Expected 12/10/2026	$12.24 $11.12 $10.07	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	AVR	256 kB	32 bit	12 bit	66 MHz	45 I/O	64 kB	3 V	5.5 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU AT91SAM7S256D-MU Microchip Technology 1: $11.56 309In Stock	Mfr. Part # AT91SAM7S256D-MU Mouser Part # 556-AT91SAM7S256D-MU	Microchip Technology	ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU	Datasheet	309In Stock	$11.56 $10.52 $9.51	Min.: 1 Mult.: 1	SMD/SMT	QFN-64	ARM7TDMI	256 kB	32 bit/16 bit	10 bit	55 MHz	32 I/O	64 kB	1.65 V	1.95 V	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 256K FLASH 4K EE 8K SRAM ADC 1.8V ATMEGA2561V-8MU Microchip Technology 1: $15.50 486In Stock	Mfr. Part # ATMEGA2561V-8MU Mouser Part # 556-ATMEGA2561V8MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 256K FLASH 4K EE 8K SRAM ADC 1.8V Learn More about Microchip Technology microchip atmega2560 mcus	Datasheet	486In Stock	$15.50 $14.21 $12.87	Min.: 1 Mult.: 1	SMD/SMT	MLF-64	AVR	256 kB	8 bit	10 bit	8 MHz	54 I/O	8 kB	1.8 V	5.5 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp ATSAM3S4BA-AU Microchip Technology 1: $6.54 1,556In Stock	Mfr. Part # ATSAM3S4BA-AU Mouser Part # 556-ATSAM3S4BA-AU	Microchip Technology	ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	1,556In Stock	$6.54 $5.93 $5.39	Min.: 1 Mult.: 1	SMD/SMT	QFP-64	ARM Cortex M3	256 kB	32 bit	12 bit	64 MHz	47 I/O	48 kB	1.62 V	1.9 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFPGRNIND TEMPMRL A ATSAM4S4AA-AU Microchip Technology 1: $4.78 831In Stock	Mfr. Part # ATSAM4S4AA-AU Mouser Part # 556-ATSAM4S4AA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFPGRNIND TEMPMRL A Learn More about Microchip Technology atmelsam4s	Datasheet	831In Stock	$4.78 $4.35 $3.95	Min.: 1 Mult.: 1	SMD/SMT	LQFP-48	ARM Cortex M4	256 kB	32 bit	12 bit	120 MHz	34 I/O	64 kB	1.08 V	1.32 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Cortx-M0+256KB FLASH ATSAMD20E18A-AUT Microchip Technology 1: $3.22 4,352In Stock	Mfr. Part # ATSAMD20E18A-AUT Mouser Part # 556-ATSAMD20E18A-AUT	Microchip Technology	ARM Microcontrollers - MCU Cortx-M0+256KB FLASH Learn More about Microchip Technology atmel samd20 mcu	Datasheet	4,352In Stock	Cut Tape $3.22 $3.11 Reel $2.66 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SMD/SMT	TQFP-32	ARM Cortex M0	256 kB	32 bit	12 bit	48 MHz	26 I/O	32 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel