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Microchip Technology ATSAM4S4AA-MU — Microcontrollers & Processors (MCU / MPU / DSP)

Microchip ATSAM4S4AA-MU ARM Cortex-M4 MCU, 120 MHz

MPNATSAM4S4AA-MU
End of Life

Microchip SAM4S series ATSAM4S4AA-MU, 32-bit ARM Cortex-M4 MCU, 120 MHz, 256 KB Flash, 64 KB SRAM, 48-VFQFN exposed pad, -40°C to 85°C.

$4.87Ref. price · indicative, final on quote
Packaging48-VFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesSAM4S
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

ATSAM4S4AA-MU specifications
ParameterValue
SeriesSAM4S
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.62V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed120MHz
PackageTray
RAM size64K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, Memory Card, SPI, SSC, UART/USART, USB
Number of i (O)34
Core processorARM® Cortex®-M4
Case48-VFQFN Exposed Pad
Data convertersA/D 8x12b
Program memory size256KB (256K x 8)

Product details

This core handles real-time control loops, sensor fusion, and audio processing without a separate DSP chip.

The peripheral list includes DMA, PWM, WDT, brown-out detect, and POR — the usual watchdog and housekeeping blocks for unattended equipment. The 8-channel 12-bit ADC handles analog inputs like thermocouple or current-sense feedback.

Package and supply — 48-QFN with exposed pad, 1.62V to 3.6V

Supply range of 1.62V to 3.6V lets it run from a single Li-ion cell or a 3.3V rail with 200 mV of brownout margin.

For BOM planning, this part carries no imminent supply risk from the manufacturer side — allocation cycles are the usual concern, not discontinuation.

Frequently asked questions

Is the ATSAM4S4AA-MU RoHS compliant?

Yes, it is listed as ROHS3 Compliant, meeting the latest EU restriction of hazardous substances directive without exemptions.