Microchip ATSAML21G18B-AUT, 32bit ARM Cortex M0 Microcontroller, SAM L1, 48MHz, 256 kB Flash, 48-Pin TQFP

  • RS Stock No. 171-7840
  • Mfr. Part No. ATSAML21G18B-AUT
  • Brand Microchip
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

Microchip Technology Microcontroller

The Microchip technology SAML1 family type, TQFP package, surface mount, 48-pin ARMCortex-M0 based 32-bit microcontroller has a maximum voltage rating of 3.63V. It is an ultra-low-power ATSAML1 based flash microcontroller (MCU) that features power management technologies and consumes under 35MHz in active mode and 200nA in sleep mode. In addition to ultra-low-power performance, this device features full-speed USB host and device, event system and sleepwalking, 12-bit analogue, AES, capacitive touch sensing and built-in op-amps.

Features and Benefits

• 256KB in-system self-programmable Flash
• 32KB SRAM Main Memory
• 8KB Flash Read-While-Write section
• 8KB SRAM Low power Memory
• ARM Cortex-M0+CPU running at up to 48MHz
• Battery backup support
• CRC-32 generator
• Embedded Buck/LDO regulator supporting on-the-fly selection
• Idle, standby, backup, and Off sleep modes
• One 12-bit, 1MSPS analogue-to-Digital Converter (ADC)
• One Configurable Custom Logic (CCL)
• Operating temperature ranges between - 40°C and 85°C
• Peripheral Touch Controller (PTC)
• Three Operational Amplifiers (OPAMP)
• Two analogue Comparators (AC) with window compare function
• Two performance levels
• Two-channel, 12-bit, 1MSPS Dual Output Digital-to-Analog Converter (DAC)
• Two-pin Serial Wire Debug (SWD) programming, test and debugging interface
• Ultra-Low Power Architecture consuming under 35uA/MHz in Active mode
• Wake-up on touch in standby mode
• Watchdog Timer (WDT)


• Consumer appliances
• Home automation
• Industrial
• Metering

Attribute Value
Family Name SAM L1
Package Type TQFP
Mounting Type Surface Mount
Pin Count 48
Device Core ARM Cortex M0
Data Bus Width 32bit
Program Memory Size 256 kB
Maximum Frequency 48MHz
RAM Size 32 kB
USB Channels 1
ADC Channels 14
Number of SPI Channels 6
Typical Operating Supply Voltage 3.63 V
Number of ADC Units 1
Maximum Operating Temperature +85 °C
Length 7mm
ADCs 1 (14 x 12 bit)
Minimum Operating Temperature -40 °C
Number of I2C Channels 6
Number of Timers 2
Number of UART Channels 1
ADC Resolution 12bit
Dimensions 7 x 7 x 1.05mm
Number of USART Channels 1
Width 7mm
Program Memory Type Flash
Timer Resolution 16 bit, 24 bit
Height 1.05mm
Number of LIN Channels 1
2382 In stock - FREE next working day delivery available
Price Each (In a Pack of 2)
£ 1.155
(exc. VAT)
£ 1.386
(inc. VAT)
Per unit
Per Pack*
2 +
*price indicative
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