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Description
MICROCHIP ATSAM4S2AA-AU 32 Bit Microcontroller, SAM4S Series, ARM Cortex-M4, 120 MHz, 128 KB, 64 KB, 48 Pins, LQFPThe ATSAM4S2AA AU is a SMART SAM4S series 32 bit Flash Microcontroller based on the high performance ARM Cortex M4 RISC processor. It operates at a maximum speed of 120MHz and features 128kB of flash memory and 64kB of SRAM. Peripheral set includes a full speed USB device port with embedded transceiver, a high speed MCI for SDIO SD MMC, an External Bus Interface featuring a Static Memory Controller to connect to SRAM, PSRAM, NOR flash, LCD Module and
The ATSAM4S2AA-AU is a SMART SAM4S series 32-bit Flash Microcontroller based on the high-performance ARM Cortex-M4 RISC processor. It operates at a maximum speed of 120MHz and features 128kB of flash memory and 64kB of SRAM. Peripheral set includes a full-speed USB device port with embedded transceiver, a high-speed MCI for SDIO/SD/MMC, an External Bus Interface featuring a Static Memory Controller to connect to SRAM, PSRAM, NOR flash, LCD Module and NAND flash, 2 USARTs, 2 UARTs, 2 TWIs, 3 SPIs, an I²S, as well as a PWM timer, two 3-channel general-purpose 16-bit timers (with stepper motor and quadrature decoder logic support), an RTC, a 12-bit ADC, a 12-bit DAC and an analog comparator. The device operate from 1.62V to 3.6V. It is ready for capacitive touch, offering native support for the Atmel QTouch® library for easy implementation of buttons, wheels and sliders. The real-time event management allows peripherals to receive, react to and send events in active and sleep modes.
- ARM Cortex-M4 with 2kB of cache running at up to 120MHz
- Memory protection unit (MPU)
- DSP Instruction set
- Thumb®-2 instruction set
- Pin-to-pin compatible with Atmel SAM7S, SAM3N and SAM3S MCUs
- Embedded voltage regulator for single supply operation
- Power-on-reset (POR), brown-out detector (BOD) and watchdog for safe operation
- 3 to 20MHz Resonator oscillators
- RTC with Gregorian and Persian Calendar mode, waveform generation in low-power modes
- RTC counter calibration circuitry compensates for 32.768kHz crystal frequency inaccuracy
- High-precision factory-trimmed internal RC oscillator with 4MHz default frequency
- Slow clock internal RC oscillator as permanent low-power mode device clock
- Two PLLs up to 240MHz for device clock and for USB
- Temperature sensor
- Low-power tamper detection on two inputs
- Sleep, wait and backup modes
- 32-bit Real-time timer and RTC with calendar, alarm and 32kHz trimming features
- 256-bit General purpose backup registers (GPBR)
- One 2-channel 12-bit 1MSPS DAC
- One analog comparator with flexible input selection, selectable input hysteresis
Applications
Metering
Product details
| Embedded Interface Type | I2C, I2S, SPI, UART, USB |
| No. of I/O's | 34I/O's |
| No. of Bits | 32bit |
| Program Memory Size | 128KB |
| Architecture | ARM Cortex-M4 |
| No. of Pins | 48Pins |
| Product Range | SMART ARM based Microcontrollers |
| CPU Speed | 120MHz |
| Supply Voltage Min | 1.62V |
| MCU Case Style | LQFP |
| Packaging | Each |
| Supply Voltage Max | 3.6V |
| RAM Memory Size | 64KB |
| MSL | MSL 3 - 168 hours |
Other details
| Brand | MICROCHIP |
| Part Number | ATSAM4S2AA-AU |
| Quantity | Each |
| Technical Data Sheet EN | |
| Operating Instructions EN |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
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4.7 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 4
Stay put!
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
Nice and thin, soft, and stay put. I wear an 8 shoe and don’t like a thick sock taking up room. These socks are a bit tight on big toe. Wish they came in large.
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Reviewed in the United States on October 10, 2023
★★★★★ 5
The best
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
The best no show socks I have found. Stay in place very well and hold up wash after wash. I have tossed all the other brands I’ve bought over the years and stocked up on these as I was tired of digging through the drawer hoping to find a clean pair.
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Reviewed in the United States on December 8, 2024
★★★★★ 5
Love these.
Number of Items: 3, Color: White (3-pairs), Size: Medium
I have them in black and white. I use them everyday in all shoes. These are very versatile and a great quality material. They take a looong time to wear and they stay in place. Very washable and good material. They are not too thick and they do not shrink. I do air dry mine. They do not hold smells even in the summer heat.
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Reviewed in the United States on July 7, 2024
★★★★★ 5
Perfect!
Number of Items: 3, Color: Pink Quartz Assorted (3-pairs), Size: Medium
My new favorite socks! True to size, fit perfectly, and the best part is they do not slide off your foot! 10/10 recommend!
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Reviewed in the United States on July 10, 2025
★★★★★ 5
The perfect sock!
Size: 6-10, Color: Halo Gray/Assorted
The only socks that I can wear with my hey dudes. They stay on my ankles and never slid down into the shoe. I will forever order these as long as they are available. They are comfy too!
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Reviewed in the United States on August 21, 2025