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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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4.8 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
room divider
Color: Black
all good...ez to assemble
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
Great room divider
Color: Black, Size: 4 Panel-88'', Color: Black, Size: 4 Panel-88''
This is a room divider and would work great as one! I’m using it as a cover for my car port/garage so you can’t look in and see my messy garage as easily and for what I’m using it for it’s a little not quite as sturdy as I need it to but I’m sure it’s not meant to be used outside anyways so I don’t fault the product since I’m not using it as intended… with that said though…. It still covers my garage beautifully and really does exactly what a I need it to! I’m sure the wind may blow it over if it gets too crazy but I don’t see it breaking by any means. The frame is metal and drilled together using long screws. It’s very well built. The cloth for the panels is this waterproof type material that’s kind of like the gazebo roof feeling. So it’s easy to clean and it’s easy to wipe. You can put it straight or bend the panels and either way it still stands up. You don’t HAVE to bend it to make it stand or anything. You can literally use it straight across like I am in the pictures. Overall very happy with this product and it’s also very tall so it truly covers a lot (hides a lot lol). I’m 5’8 so you can see it’s taller than me by the pic I took
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Reviewed in the United States on May 4, 2026
★★★★★ 3
OK. Drag to setup. Needs more stable feet
Color: Black, Size: 4 Panel-88''
I was glad to find these.
The benefits of having them in a recording setup is helping suppressing noise for a vocal booth.
It's a layer that surrounds the recording box. Nice!
(But away from audio hardware or DAW).
Here is the not so nice part:
The feet!
It's able to stand (as it needs to do this). But it cannot be bumped. If it does, it's coming down onto something.
I believe the feet units are not wide enough (or long enough). That makes for an easier tumble risk. So far, they haven't, but it's like being in the woods over leaves - it feels dangerous with every step! (That's actually true).
They are tall enough, wide enough, material OK. But the feet for the main assembly do not seem sturdy enough.
There are ways to help that.
I'm thinking a 2x4 to augment the base. Make them wider. It can be done. It was a drag to set these up, and I'm sure to modify them like i'd want them. But, they do come in at a much lower price that other similar dividers.
Consider all this because I've seen more solid dividers ( with padding) that would basically be the 1/2 cost of these. But i'd think they'd be easier to assemble, stand sturdier, and without that feeling of an impending fall (or fail).
This is my opinion. I hope it helps.
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Reviewed in the United States on May 29, 2026
★★★★★ 1
wrong size of metal components. incorrect items. non functioning
Color: Black, Size: 4 Panel-88''
The owner of this product sent me the incorrect pieces when I tried to install. It didn’t fit. The pieces were missing holes and once I connected the wrong pieces after knowing now they’re stuck and I can’t return them even though Amazon was kind enough to refund me. I just want to warn people this product is such a disappointment because it looks good. It’s good price, but you can’t even assemble the thing very disappointed.
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Reviewed in the United States on May 31, 2026
★★★★★ 4
Sturdy Folding Room Divider with Good Privacy Coverage and Modern Look
Color: Black, Size: 4 Panel-88''
I picked this room divider up to help separate space in a room without needing permanent walls, and overall it works very well for creating privacy while still looking clean and modern.
The size is one of the biggest advantages. At 6 feet tall and roughly 88 inches wide, it creates a noticeable visual separation and works well for apartments, dorms, offices, studios, shared rooms, or content creation setups where you want to hide clutter or define different areas.
The black fabric and frame design give it a simple modern appearance that blends easily into most spaces without looking overly decorative or outdated. It has a clean minimalist look that works especially well in offices, bedrooms, gaming rooms, or studio environments.
Assembly was fairly straightforward overall. Once fully put together, the divider feels reasonably stable for normal indoor use. The folding panel design also makes it flexible enough to angle different ways depending on the room layout.
The portability is another strong point. Since it folds down, it is much easier to move or reposition compared to permanent partitions or heavier wooden dividers. That makes it practical for temporary privacy setups or changing room layouts frequently.
Privacy performance is solid visually. It blocks sightlines well enough for changing areas, workspaces, video backgrounds, or separating sections of a room. The fabric also softens the space slightly instead of feeling harsh or industrial.
One thing worth noting is that while it provides visual privacy, it is not soundproof. It helps define space and reduce some openness, but conversations and noise will still pass through normally.
The material quality feels decent for the price range. The frame is lightweight but functional, though I would still avoid rough handling or constant aggressive repositioning over time.
Value for money is good considering the size, flexibility, and convenience. Similar room dividers can become expensive quickly, especially for taller multi-panel setups.
Overall, this is best for anyone needing an affordable flexible way to create separation and privacy in shared or open spaces. It works especially well for apartments, dorms, offices, studios, remote work setups, or content creators wanting a cleaner background without permanent construction.
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Reviewed in the United States on May 8, 2026
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