Datasheet Microchip ATSAMD21J18

32-bit ARM-Based
Microcontrollers
SAM D21E / SAM D21G / SAM D21J
Introduction
® ® The SAM D21 is a series of low-power microcontrollers using the 32-bit ARM Cortex -M0+ processor,
and ranging from 32-to 64-pins with up to 256KB Flash and 32KB of SRAM. The SAM D21 operate at a
®
maximum frequency of 48MHz and reach 2.46 CoreMark /MHz. They are designed for simple and
intuitive migration with identical peripheral modules, hex compatible code, identical linear address map
and pin compatible migration paths between all devices in the product series. All devices include
intelligent and flexible peripherals, Event System for inter-peripheral signaling, and support for capacitive
touch button, slider and wheel user interfaces. Features
• • • • • Processor
– ARM Cortex-M0+ CPU running at up to 48MHz
• Single-cycle hardware multiplier
• Micro Trace Buffer (MTB)
Memories
– 32/64/128/256KB in-system self-programmable Flash
– 4/8/16/32KB SRAM Memory
System
– Power-on reset (POR) and brown-out detection (BOD)
– Internal and external clock options with 48MHz Digital Frequency Locked Loop (DFLL48M)
and 48MHz to 96MHz Fractional Digital Phase Locked Loop (FDPLL96M) …

This is a summary document. A
complete document is available on
our Web site at www.microchip.com 32-bit ARM-Based
Microcontrollers
SAM D21E / SAM D21G /SAM D21J Summary
Introduction
® ® The SAM D21 is a series of low-power microcontrollers using the 32-bit ARM Cortex -M0+ processor,
and ranging from 32-to 64-pins with up to 256KB Flash and 32KB of SRAM. The SAM D21 operate at a
®
maximum frequency of 48MHz and reach 2.46 CoreMark /MHz. They are designed for simple and
intuitive migration with identical peripheral modules, hex compatible code, identical linear address map
and pin compatible migration paths between all devices in the product series. All devices include
intelligent and flexible peripherals, Event System for inter-peripheral signaling, and support for capacitive
touch button, slider and wheel user interfaces. Features
• • • • • Processor
- ARM Cortex-M0+ CPU running at up to 48MHz
• Single-cycle hardware multiplier
• Micro Trace Buffer (MTB)
Memories
- 32/64/128/256KB in-system self-programmable Flash
- 4/8/16/32KB SRAM Memory
System
- Power-on reset (POR) and brown-out detection (BOD) …

32-bit ARM-Based
Microcontrollers
SAM D21EL / SAM D21GL
Introduction
® ® The SAM D21L is a series of low-power microcontrollers using the 32-bit ARM Cortex -M0+ processor,
and ranging from 32-to 48-pins with up to 64KB Flash and 8KB of SRAM. The SAM D21L devices
®
operate at a maximum frequency of 48MHz and reach 2.46 CoreMark /MHz. They are designed for
simple and intuitive migration with identical peripheral modules, hex compatible code, identical linear
address map and pin compatible migration paths between all devices in the product series. All devices
include intelligent and flexible peripherals, Event System for inter-peripheral signaling, and support for
capacitive touch button, slider and wheel user interfaces. Features
• • • • • Processor
- ARM Cortex-M0+ CPU running at up to 48MHz
• Single-cycle hardware multiplier
• Micro Trace Buffer (MTB)
Memories
- 32/64KB in-system self-programmable Flash
- 4/8KB SRAM Memory
System
- Power-on reset (POR) and brown-out detection (BOD)
- Internal and external clock options with 48MHz Digital Frequency Locked Loop (DFLL48M)
and 48MHz to 96MHz Fractional Digital Phase Locked Loop (FDPLL96M) …

32-bit ARM-Based
Microcontrollers
SAM D21EL / SAM D21GL Summary
Introduction
® ® The SAM D21L is a series of low-power microcontrollers using the 32-bit ARM Cortex -M0+ processor,
and ranging from 32-to 48-pins with up to 64KB Flash and 8KB of SRAM. The SAM D21L devices
®
operate at a maximum frequency of 48MHz and reach 2.46 CoreMark /MHz. They are designed for
simple and intuitive migration with identical peripheral modules, hex compatible code, identical linear
address map and pin compatible migration paths between all devices in the product series. All devices
include intelligent and flexible peripherals, Event System for inter-peripheral signaling, and support for
capacitive touch button, slider and wheel user interfaces. Features
• • • • • Processor
- ARM Cortex-M0+ CPU running at up to 48MHz
• Single-cycle hardware multiplier
• Micro Trace Buffer (MTB)
Memories
- 32/64KB in-system self-programmable Flash
- 4/8KB SRAM Memory
System
- Power-on reset (POR) and brown-out detection (BOD)
- Internal and external clock options with 48MHz Digital Frequency Locked Loop (DFLL48M)
and 48MHz to 96MHz Fractional Digital Phase Locked Loop (FDPLL96M) …