SAM L21 Microcontrollers

Microchip Technology SAM L21 are ultralow-power microcontrollers (MCU) using the 32-bit ARM® Cortex®-M0+ processor. The processor runs at max. 48MHz (2.46 CoreMark®/MHz) and up to 256KB Flash and 40KB of SRAM. The MCUs are housed in 32-, 48-, and 64-pin package. The SAM L21 feature sophisticated power management technologies, like power domain gating, SleepWalking, ultralow-power peripherals and more that allow for very low current consumption. The highly configurable peripherals include a touch controller supporting capacitive interfaces with proximity sensing.

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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
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
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM
Datasheet
8,498In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SAML21 SMD/SMT VQFN-32 ARM Cortex M0+ 128 kB 32 bit 12 bit 48 MHz 25 I/O 16 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel

Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM
Datasheet
5,700In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

SAML21 SMD/SMT VQFN-64 ARM Cortex M0+ 128 kB 32 bit 12 bit 48 MHz 51 I/O 16 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU 48TQFP 85C, GREEN,1.6-3.6V,48MHz
Datasheet
1,770In Stock
Min.: 1
Mult.: 1
: 2,500

SAML21 SMD/SMT TQFP-48 ARM Cortex M0+ 64 kB 32 bit 12 bit 48 MHz 37 I/O 8 kB 1.62 V 3.63 V - 40 C + 105 C Reel, Cut Tape
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM
Datasheet
1,352In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SAML21 SMD/SMT TQFP-48 ARM Cortex M0+ 128 kB 32 bit 12 bit 48 MHz 37 I/O 16 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU 32QFN 85C, GREEN,1.6-3.6V,48MHz
Datasheet
4,665In Stock
Min.: 1
Mult.: 1
: 5,000

SAML21 SMD/SMT VQFN-32 ARM Cortex M0+ 32 kB 32 bit 12 bit 48 MHz 25 I/O 4 kB 1.62 V 3.63 V - 40 C + 105 C Reel, Cut Tape
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM
Datasheet
1,077In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SAML21 SMD/SMT TQFP-64 ARM Cortex M0+ 128 kB 32 bit 12 bit 48 MHz 51 I/O 16 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz
Datasheet
3,591In Stock
Min.: 1
Mult.: 1
: 2,000

SAML21 SMD/SMT TQFP-32 ARM Cortex M0+ 64 kB 32 bit 12 bit 48 MHz 25 I/O 8 kB 1.62 V 3.63 V - 40 C + 105 C Reel, Cut Tape
Microchip Technology ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz
Datasheet
1,232In Stock
Min.: 1
Mult.: 1
: 2,000

SAML21 SMD/SMT TQFP-32 ARM Cortex M0+ 128 kB 32 bit 12 bit 48 MHz 25 I/O 16 kB 1.62 V 3.63 V - 40 C + 105 C Reel, Cut Tape
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM
Datasheet
338In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

SAML21 SMD/SMT TQFP-32 ARM Cortex M0+ 64 kB 32 bit 12 bit 48 MHz 25 I/O 8 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz
Datasheet
2,001In Stock
Min.: 1
Mult.: 1
: 2,000

SAML21 SMD/SMT TQFP-32 ARM Cortex M0+ 32 kB 32 bit 12 bit 48 MHz 25 I/O 4 kB 1.62 V 3.63 V - 40 C + 105 C Reel, Cut Tape
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM
Datasheet
3,708In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SAML21 SMD/SMT VQFN-32 ARM Cortex M0+ 32 kB 32 bit 12 bit 48 MHz 25 I/O 4 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU WLCSP64, IND TEMP GREEN, 1.6-3.6V, 48MHz
Datasheet
20,000In Stock
Min.: 5,000
Mult.: 5,000
: 5,000

SAML21 SMD/SMT WLCSP-64 ARM Cortex M0 256 kB 32 bit 12 bit 48 MHz 51 I/O 32 kB 1.62 V 3.63 V - 40 C + 85 C Reel
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM
Datasheet
2,621In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

SAML21 SMD/SMT VQFN-48 ARM Cortex M0+ 128 kB 32 bit 12 bit 48 MHz 37 I/O 16 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU 32QFN 85C, GREEN,1.6-3.6V,48MHz
Datasheet
381In Stock
Min.: 1
Mult.: 1
: 5,000

SAML21 SMD/SMT VQFN-32 ARM Cortex M0+ 64 kB 32 bit 12 bit 48 MHz 25 I/O 8 kB 1.62 V 3.63 V - 40 C + 105 C Reel, Cut Tape
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM
Datasheet
1,448In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SAML21 SMD/SMT TQFP-48 ARM Cortex M0+ 64 kB 32 bit 12 bit 48 MHz 37 I/O 8 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM
Datasheet
1,094In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SAML21 SMD/SMT TQFP-64 ARM Cortex M0+ 64 kB 32 bit 12 bit 48 MHz 51 I/O 8 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU 64TQFP 85C, GREEN,1.6-3.6V,48MHz
Datasheet
824In Stock
Min.: 1
Mult.: 1
: 1,500

SAML21 SMD/SMT TQFP-64 ARM Cortex M0+ 256 kB 32 bit 12 bit 48 MHz 51 I/O 32 kB 1.62 V 3.63 V - 40 C + 105 C Reel, Cut Tape
Microchip Technology ARM Microcontrollers - MCU 64TQFP 85C, GREEN,1.6-3.6V,48MHz
Datasheet
1,482In Stock
Min.: 1
Mult.: 1
: 1,500

SAML21 SMD/SMT TQFP-64 ARM Cortex M0+ 128 kB 32 bit 12 bit 48 MHz 51 I/O 16 kB 1.62 V 3.63 V - 40 C + 105 C Reel, Cut Tape
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 24KB SRAM
Datasheet
6,302In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

SAML21 SMD/SMT VQFN-48 ARM Cortex M0+ 256 kB 32 bit 12 bit 48 MHz 37 I/O 32 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 256K Flash/32k SRAM
Datasheet
1,779In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

SAML21 SMD/SMT TQFP-32 ARM Cortex M0+ 256 kB 32 bit 12 bit 48 MHz 25 I/O 32 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM
Datasheet
820In Stock
15,000Expected 12/14/2026
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SAML21 SMD/SMT VQFN-32 ARM Cortex M0+ 256 kB 32 bit 12 bit 48 MHz 25 I/O 32 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM
Datasheet
2,329In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SAML21 SMD/SMT TQFP-48 ARM Cortex M0+ 256 kB 32 bit 12 bit 48 MHz 37 I/O 32 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM
Datasheet
1,518In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SAML21 SMD/SMT TQFP-64 ARM Cortex M0+ 256 kB 32 bit 12 bit 48 MHz 51 I/O 32 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel

Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM
Datasheet
4In Stock
4,000Expected 1/28/2027
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

SAML21 SMD/SMT VQFN-64 ARM Cortex M0+ 256 kB 32 bit 12 bit 48 MHz 51 I/O 32 kB 1.62 V 3.63 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 2,000
Mult.: 2,000
: 2,000

SAML21 SMD/SMT TQFP-32 ARM Cortex M0+ 32 kB 32 bit 12 bit 48 MHz 25 I/O 4 kB 1.62 V 3.63 V - 40 C + 85 C Reel