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256 kB 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	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	Qualification	Packaging
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 MCU TrustZone, 160 MHz 256 Kbytes Flash STM32U535VCI6Q STMicroelectronics 1: $12.08 4In Stock	Mfr. Part No. STM32U535VCI6Q Mouser Part No 511-STM32U535VCI6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 MCU TrustZone, 160 MHz 256 Kbytes Flash Learn More about STMicroelectronics stmicro stm32u5	Datasheet	4In Stock	$12.08 $9.17 $8.45 $7.85 $7.28	Min.: 1 Mult.: 1	SMD/SMT	UFBGA-100	ARM Cortex M33	256 kB	32 bit	12 bit	160 MHz		274 kB	1.71 V	3.6 V	- 40 C	+ 85 C		Tray
ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ a.64 MHz 256 Kb Flash 32 Kb SRAM STM32WL33CCV6A STMicroelectronics 1: $8.40 37In Stock	Mfr. Part No. STM32WL33CCV6A Mouser Part No 511-STM32WL33CCV6A	STMicroelectronics	ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ a.64 MHz 256 Kb Flash 32 Kb SRAM Learn More about STMicroelectronics stm32wl3x mcus	Datasheet	37In Stock	$8.40 $6.94 $6.62 $5.94 View $5.81 $5.78 Quote	Min.: 1 Mult.: 1	SMD/SMT	VQFN-48	ARM Cortex M0+	256 kB	32 bit	12 bit	64 MHz	32 I/O	32 kB	1.7 V	3.6 V	- 40 C	+ 85 C		Tray
ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 256 Kb Flash 32 Kb SRAM STM32WL33CCV7 STMicroelectronics 1: $9.14 22In Stock	Mfr. Part No. STM32WL33CCV7 Mouser Part No 511-STM32WL33CCV7	STMicroelectronics	ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 256 Kb Flash 32 Kb SRAM Learn More about STMicroelectronics stm32wl33x mcus	Datasheet	22In Stock	$9.14 $7.90 $7.33 $6.76 View $6.42 $6.17	Min.: 1 Mult.: 1	SMD/SMT	VFQFPN-48	ARM Cortex M0+	256 kB	32 bit	12 bit	64 MHz	32 I/O	32 KB	1.7 V	3.6 V	- 40 C	+ 105 C		Tray
ARM Microcontrollers - MCU Multiprotocol LPWAN 32-bit Arm Cortex-M4 MCUs LoRa (G)FSK-MSK BPSK 256KB Flash STM32WLE5CCU6 STMicroelectronics 1: $13.60 59In Stock 7,800Expected 13/11/2026	Mfr. Part No. STM32WLE5CCU6 Mouser Part No 511-STM32WLE5CCU6	STMicroelectronics	ARM Microcontrollers - MCU Multiprotocol LPWAN 32-bit Arm Cortex-M4 MCUs LoRa (G)FSK-MSK BPSK 256KB Flash Learn More about STMicroelectronics stm stm32wle4xx stm32wle5xx mcus	Datasheet	59In Stock 7,800Expected 13/11/2026	$13.60 $10.96 $10.43 $9.28 View $8.83 $8.40 Quote	Min.: 1 Mult.: 1	SMD/SMT	UFQFPN-48	ARM Cortex M4	256 kB	32 bit	12 bit	48 MHz	43 I/O	64 kB	1.8 V	3.6 V	- 40 C	+ 105 C		Tray
ARM Microcontrollers - MCU Sub-GHz Wireless Microcontrollers. Arm Cortex-M4 a.48 MHz 256 Kbytes of Flash 64 STM32WLE5CCU7 STMicroelectronics 1: $12.63 26In Stock 14,040On Order	Mfr. Part No. STM32WLE5CCU7 Mouser Part No 511-STM32WLE5CCU7	STMicroelectronics	ARM Microcontrollers - MCU Sub-GHz Wireless Microcontrollers. Arm Cortex-M4 a.48 MHz 256 Kbytes of Flash 64 Learn More about STMicroelectronics stm stm32wle4xx stm32wle5xx mcus	Datasheet	26In Stock 14,040On Order On Order Ship Dates Mfr. No: STM32WLE5CCU7 Stock: 26 Can Dispatch Immediately On Order: 6,240 Expected 12/11/2026 7,800 Expected 12/12/2026 Factory Lead Time: 52 Weeks	$12.63 $10.96 $10.39 $9.59 View $9.11 $8.69 $8.23 Quote	Min.: 1 Mult.: 1	SMD/SMT	UFQFPN-48	ARM Cortex M4	256 kB	32 bit	12 bit	48 MHz	43 I/O	64 kB	1.8 V	3.6 V	- 40 C	+ 105 C		Tray
32-bit Microcontrollers - MCU 256KB, 144FFBGA Ind AT32UC3A3256-CTUT Microchip Technology 1: $22.03 6In Stock	Mfr. Part No. AT32UC3A3256-CTUT Mouser Part No 556-AT32UC3A3256CTUT	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144FFBGA Ind Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	6In Stock	$22.03 $20.05 $18.17	Min.: 1 Mult.: 1	SMD/SMT	FFBGA-144	AVR	256 kB	32 bit	10 bit	66 MHz	110 I/O	64 kB	1.65 V	1.95 V	- 40 C	+ 85 C		Tray
32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod. AT32UC3A3256S-ALUT Microchip Technology 1: $23.05 10In Stock	Mfr. Part No. AT32UC3A3256S-ALUT Mouser Part No 556-AT32UC3A3256SALT	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod. Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	10In Stock	$23.05 $20.97 $18.97	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	AVR	256 kB	32 bit	10 bit	66 MHz	110 I/O	64 kB	1.65 V	1.95 V	- 40 C	+ 85 C		Tray
32-bit Microcontrollers - MCU 256KB, 144FFBGA w/ AES Mod. AT32UC3A3256S-CTUR Microchip Technology 1: $23.60 183In Stock	Mfr. Part No. AT32UC3A3256S-CTUR Mouser Part No 556-AT32UC3A3256SCTR	Microchip Technology	32-bit Microcontrollers - MCU 256KB, 144FFBGA w/ AES Mod. Learn More about Microchip Technology microchip a3 a4 series mcus	Datasheet	183In Stock	Cut Tape $23.60 $22.79 Reel $19.42 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SMD/SMT	TBGA-144	AVR	256 kB	32 bit	10 bit	66 MHz	110 I/O	64 kB	1.65 V	1.95 V	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM AT32UC3C0256C-ALUT Microchip Technology 1: $19.20 6In Stock	Mfr. Part No. AT32UC3C0256C-ALUT Mouser Part No 556-AT32UC3C0256CALT	Microchip Technology	32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	6In Stock	$19.20 $17.46 $15.83	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	AVR	256 kB	32 bit	12 bit	66 MHz	123 I/O	64 kB	3 V	5.5 V	- 40 C	+ 85 C		Tray
32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM AT32UC3C1256C-AUR Microchip Technology 1: $18.20 12In Stock 1,000Expected 4/1/2027	Mfr. Part No. AT32UC3C1256C-AUR Mouser Part No 556-AT32UC3C1256CAUR	Microchip Technology	32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	12In Stock 1,000Expected 4/1/2027	Cut Tape $18.20 $17.57 Reel $14.97 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-100	AVR	256 kB	32 bit	12 bit	66 MHz	81 I/O	64 kB	3 V	5.5 V	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM AT32UC3C1256C-AUT Microchip Technology 1: $17.94 10In Stock	Mfr. Part No. AT32UC3C1256C-AUT Mouser Part No 556-AT32UC3C1256CAUT	Microchip Technology	32-bit Microcontrollers - MCU UC3C 256K FLASH 64K SRAM Learn More about Microchip Technology microchip c series mcus	Datasheet	10In Stock	$17.94 $16.31 $14.78	Min.: 1 Mult.: 1	SMD/SMT	TQFP-100	AVR	256 kB	32 bit	12 bit	66 MHz	81 I/O	64 kB	3 V	5.5 V	- 40 C	+ 85 C		Tray
ARM Microcontrollers - MCU LQFP GRN IND TMP MRL C AT91SAM7X256C-AU Microchip Technology 1: $16.86 86In Stock 3,150On Order	Mfr. Part No. AT91SAM7X256C-AU Mouser Part No 556-AT91SAM7X256C-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP GRN IND TMP MRL C	Datasheet	86In Stock 3,150On Order On Order Ship Dates Mfr. No: AT91SAM7X256C-AU Stock: 86 Can Dispatch Immediately On Order: 1,440 Expected 11/12/2026 1,710 Expected 26/1/2027 Factory Lead Time: 21 Weeks	$16.86 $15.35 $13.91	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM7TDMI	256 kB	32 bit	10 bit	20 MHz	62 I/O	64 kB	1.65 V	1.95 V	- 40 C	+ 85 C		Tray
ARM Microcontrollers - MCU LQFP Green IND TEMP MRL B, T&R MRLC AT91SAM7X256C-AUR Microchip Technology 1: $17.12 10In Stock 2,000Expected 27/11/2026	Mfr. Part No. AT91SAM7X256C-AUR Mouser Part No 556-AT91SAM7X256CAUR	Microchip Technology	ARM Microcontrollers - MCU LQFP Green IND TEMP MRL B, T&R MRLC	Datasheet	10In Stock 2,000Expected 27/11/2026	Cut Tape $17.12 $16.55 $16.50 $16.42 $16.09 Reel $14.10 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-100	ARM7TDMI	256 kB	32 bit	10 bit	20 MHz	62 I/O	64 kB	1.65 V	1.95 V	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp ATSAM3S4AA-AU Microchip Technology 1: $9.13 26In Stock	Mfr. Part No. ATSAM3S4AA-AU Mouser Part No 556-ATSAM3S4AA-AU	Microchip Technology	ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	26In Stock	$9.13 $9.11 $8.73 $7.66	Min.: 1 Mult.: 1	SMD/SMT	QFP-48	ARM Cortex M3	256 kB	32 bit	12 bit	64 MHz	34 I/O	48 kB	1.62 V	1.9 V	- 40 C	+ 85 C		Tray
ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp ATSAM3S4CA-AU Microchip Technology 1: $9.42 10In Stock	Mfr. Part No. ATSAM3S4CA-AU Mouser Part No 556-ATSAM3S4CA-AU	Microchip Technology	ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	10In Stock	$9.42 $8.54 $7.75	Min.: 1 Mult.: 1	SMD/SMT	QFP-100	ARM Cortex M3	256 kB	32 bit	12 bit	64 MHz	79 I/O	48 kB	1.62 V	1.9 V	- 40 C	+ 85 C		Tray
ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 ATSAM3U4CA-AU Microchip Technology 1: $10.36 81In Stock 180Expected 25/2/2027	Mfr. Part No. ATSAM3U4CA-AU Mouser Part No 556-ATSAM3U4CA-AU	Microchip Technology	ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 Learn More about Microchip Technology microchip sam3u mcus	Datasheet	81In Stock 180Expected 25/2/2027	$10.36 $9.42 $8.53	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	256 kB	32 bit	12 bit	96 MHz	57 I/O	52 kB	1.62 V	1.95 V	- 40 C	+ 85 C		Tray
ARM Microcontrollers - MCU LQFPGREENIND ATSAM4S4CA-AU Microchip Technology 1: $7.33 148In Stock 180Expected 3/11/2026	Mfr. Part No. ATSAM4S4CA-AU Mouser Part No 556-ATSAM4S4CA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFPGREENIND Learn More about Microchip Technology atmelsam4s	Datasheet	148In Stock 180Expected 3/11/2026	$7.33 $6.64 $6.01	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M4	256 kB	32 bit	12 bit	120 MHz	79 I/O	64 kB	1.08 V	1.32 V	- 40 C	+ 85 C		Tray
ARM Microcontrollers - MCU LQFP,GREEN,IND TEMP,MRL B ATSAM4S4CB-ANR Microchip Technology 1: $7.59 173In Stock	Mfr. Part No. ATSAM4S4CB-ANR Mouser Part No 556-ATSAM4S4CB-ANR	Microchip Technology	ARM Microcontrollers - MCU LQFP,GREEN,IND TEMP,MRL B Learn More about Microchip Technology atmelsam4s	Datasheet	173In Stock	Cut Tape $7.59 $7.32 Reel $6.26	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-100	ARM Cortex M4	256 kB	32 bit	12 bit	120 MHz	79 I/O	64 kB	1.62 V	3.6 V	- 40 C	+ 105 C		Reel, Cut Tape
ARM Microcontrollers - MCU 64QFN 125C, GREEN,1.6-3.6V,48MHz ATSAMD21J18A-MF Microchip Technology 1: $6.43 226In Stock	Mfr. Part No. ATSAMD21J18A-MF Mouser Part No 556-ATSAMD21J18A-MF	Microchip Technology	ARM Microcontrollers - MCU 64QFN 125C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology sam d21 mcus	Datasheet	226In Stock	$6.43 $5.83 $5.29	Min.: 1 Mult.: 1	SMD/SMT	QFN-64	ARM Cortex M0+	256 kB	32 bit	12 bit	48 MHz	52 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 125 C	AEC-Q100	Tray
ARM Microcontrollers - MCU 120MHZ 256KB FLASH 4 8 QFN PKG 85C ATSAMD51G18A-MU Microchip Technology 1: $6.49 192In Stock	Mfr. Part No. ATSAMD51G18A-MU Mouser Part No 556-ATSAMD51G18AMU	Microchip Technology	ARM Microcontrollers - MCU 120MHZ 256KB FLASH 4 8 QFN PKG 85C Learn More about Microchip Technology microchip sam d5 e5	Datasheet	192In Stock	$6.49 $5.96 $5.39	Min.: 1 Mult.: 1	SMD/SMT	QFN-48	ARM Cortex M4F	256 kB	32 bit	12 bit	120 MHz	37 I/O	128 kB	1.71 V	3.6 V	- 40 C	+ 85 C	AEC-Q100	Tray
ARM Microcontrollers - MCU 120MHZ 256KB FLASH 6 4 TQFP PKG 85C ATSAME51J18A-AU Microchip Technology 1: $7.53 134In Stock 160Expected 17/11/2026	Mfr. Part No. ATSAME51J18A-AU Mouser Part No 556-ATSAME51J18AAU	Microchip Technology	ARM Microcontrollers - MCU 120MHZ 256KB FLASH 6 4 TQFP PKG 85C Learn More about Microchip Technology microchip sam e5 mcu	Datasheet	134In Stock 160Expected 17/11/2026	$7.53 $6.92 $6.27	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	ARM Cortex M4F	256 kB	32 bit	12 bit	120 MHz	51 I/O	128 kB	1.71 V	3.6 V	- 40 C	+ 85 C	AEC-Q100	Tray
32-bit Microcontrollers - MCU UC3L-256KB Flash 64QFP 85C green TRAY ATUC256L3U-AUT Microchip Technology 1: $14.24 33In Stock	Mfr. Part No. ATUC256L3U-AUT Mouser Part No 556-ATUC256L3U-AUT	Microchip Technology	32-bit Microcontrollers - MCU UC3L-256KB Flash 64QFP 85C green TRAY Learn More about Microchip Technology microchip l series mcus	Datasheet	33In Stock	$14.24 $12.92 $11.72	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	AVR	256 kB	32 bit	12 bit	50 MHz	51 I/O	32 kB	1.8 V	1.8 V	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU AVR8 256KB FLSH 16KB ATXMEGA256A3BU-AU Microchip Technology 1: $12.57 93In Stock 360Expected 15/4/2027	Mfr. Part No. ATXMEGA256A3BU-AU Mouser Part No 556-ATXMEGA256A3BUAU	Microchip Technology	8-bit Microcontrollers - MCU AVR8 256KB FLSH 16KB	Datasheet	93In Stock 360Expected 15/4/2027	$12.57 $11.52 $10.43	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	AVR	256 kB	8 bit/16 bit	12 bit	32 MHz	47 I/O	16 kB	1.6 V	3.6 V	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU AVR8 256KB FLSH 16KB ATXMEGA256A3BU-MH Microchip Technology 1: $14.04 15In Stock 520On Order	Mfr. Part No. ATXMEGA256A3BU-MH Mouser Part No 556-ATXMEGA256A3BUMH	Microchip Technology	8-bit Microcontrollers - MCU AVR8 256KB FLSH 16KB	Datasheet	15In Stock 520On Order On Order Ship Dates Mfr. No: ATXMEGA256A3BU-MH Stock: 15 Can Dispatch Immediately On Order: 260 Expected 25/3/2027 260 TBD Factory Lead Time: 27 Weeks	$14.04 $13.98 $13.33 $13.30 $10.28	Min.: 1 Mult.: 1	SMD/SMT	QFN-64	AVR	256 kB	8 bit/16 bit	12 bit	32 MHz	47 I/O	16 kB	1.6 V	3.6 V	- 40 C	+ 85 C		Tray
32-bit Microcontrollers - MCU 120Mhz MIPS, 256K Flash, 64K RAM PIC32MK0256GPG064-E/R4X Microchip Technology 1: $10.57 260In Stock	Mfr. Part No. PIC32MK0256GPG064-E/R4X Mouser Part No 579-0256GPG064-E/R4X	Microchip Technology	32-bit Microcontrollers - MCU 120Mhz MIPS, 256K Flash, 64K RAM Learn More about Microchip Technology microchip pic32mk mcu	Datasheet	260In Stock	$10.57 $9.70 $8.79	Min.: 1 Mult.: 1	SMD/SMT	QFN-64	MIPS32 microAptiv	256 kB	32 bit	12 bit	80 MHz	53 I/O	64 kB	2.2 V	3.6 V	- 40 C	+ 125 C		Tray