ATSAM4LS8CA-AU - 48MHz Cortex-M4 512KB Flash MCU | Microchip
Teilenummer: ATSAM4LS8CA-AU ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $9.33 | $9,33 |
| 10 | $8.5 | $85,00 |
| 100 | $7.42 | $742,00 |
| 500 | $6.5 | $3.250,00 |
| 1.000 | $5.85 | $5.850,00 |
ATSAM4LS8CA-AU Übersicht
A microcontroller (MCU) is a single-chip embedded computer that combines a processor core, volatile and non-volatile memory, and a rich peripheral set on one silicon die. Within the embedded taxonomy, MCUs sit between simple 8-bit controllers (such as the ATmega family) and high-end application processors, with 32-bit ARM Cortex-M devices like the SAM4L occupying the mainstream performance-per-watt tier. The SAM4L family is specifically engineered around picoPower logic, multiple low-power modes, and a flexible clock tree to minimize active and standby current in battery-driven products.
Key features of the ATSAM4LS8CA-AU include the Cortex-M4 core with single-cycle MAC and DSP extensions, 512 KB of embedded flash for application and library code, 64 KB of SRAM for data buffers and stack frames, and a peripheral event system that allows on-chip peripherals to interact without CPU intervention. The 100-pin TQFP (14 x 14 mm) package exposes the full peripheral set, including multiple USART, SPI, TWI, ADC, and timer channels needed for sensor fusion and motor control.
Technically, the SAM4L architecture combines a high-performance 32-bit RISC core with hardware acceleration blocks optimized for low energy operation. The Cortex-M4 core executes from flash with deterministic interrupt latency, while the picoPower sleep modes, programmable clock dividers, and a peripheral event controller let applications stay in deep sleep for long stretches, waking only on peripheral triggers. This balance suits applications where average current draw, not peak compute, dominates the battery life equation.
Typical applications include portable and battery-powered instrumentation, industrial sensor nodes, low-power wireless gateways, building automation controllers, and consumer human-interface products where a 48 MHz Cortex-M4 with generous 512 KB flash provides comfortable headroom for protocol stacks and graphics. The wide operating voltage range also makes the part attractive for energy-harvesting and 3.3 V system designs.
Designers should budget SRAM carefully: 64 KB of SRAM is the family-variant ceiling, so buffers for communication stacks and RTOS use must be sized accordingly. Clock configuration directly affects dynamic current, so the programmable clock dividers and sleep modes should be leveraged in firmware. The 100-pin TQFP package requires standard JEDEC reflow profiles and a 4-layer PCB for clean signal routing.
This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing, drop-in same-family alternatives, and design considerations, organized in a form factor optimized for engineering decisions.
Drop-in-Alternativen für ATSAM4LS8CA-AU – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATSAM4LS8CA-AU (gleiche Bauform und Footprint) – abweichend in Package, RoHS Status, Operating Temperature, ADC Resolution, Connectivity.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATSAM4LS8CA-AUR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATSAM4LS4CA-AUR
✅ Drop-In✓ Auf Lager
$4.85 / Stück
Datenblatt ansehen →ATSAM4LS2CA-AU
✅ Drop-In✓ Auf Lager
$3.95 / Stück
Datenblatt ansehen →ATSAM4LC8CA-AUR
✅ Drop-In✓ Auf Lager
$6.75 / Stück
Datenblatt ansehen →ATSAM4LS16CA-AU
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ATSAM4LS8CA-AU Grenzwerte & elektrische Eigenschaften
| Core | ARM Cortex-M4 |
| Core Architecture | 32-bit RISC |
| Maximale Taktfrequenz | 48 MHz |
| Flash Program Memory | 512 KB (512K x 8) |
| SRAM | 64 KB |
| Operating Voltage Range | 1.68 V to 3.6 V |
| Gehäuse | 100-TQFP (14 x 14 mm) |
| Montageart | Surface Mount |
| Anzahl der Pins | 100 |
| Betriebstemperaturbereich | -40 °C to +85 °C (Industrial) |
| Temperature Grade | Industrial (AU suffix) |
| Low-Power Technology | picoPower |
| DSP Extensions | Single-cycle MAC |
| Peripheral Set | USART, SPI, TWI, ADC, Timers, Peripheral Event System |
| RoHS-Status | Compliant (green package) |
| Lead-Free | Yes |
ATSAM4LS8CA-AU Pin-Konfiguration
| Pin 1 | VDDIO — I/O supply voltage |
| Pin 2 | PA00 — GPIO / peripheral function |
| Pin 3 | PA01 — GPIO / peripheral function |
| Pin 4 | PA02 — GPIO / peripheral function |
| Pin 5 | VDDIN — Voltage regulator input |
| Pin 6 | GND — Ground |
| Pin 7 | PA03 — GPIO / peripheral function |
| Pin 8 | PA04 — GPIO / peripheral function |
| Pin 9 | PA05 — GPIO / peripheral function |
| Pin 10 | PA06 — GPIO / peripheral function |
| Pin 11 | PA07 — GPIO / peripheral function |
| Pin 12 | VDDOUT — Voltage regulator output (1.8V typical) |
| Pin 13 | PA08 — GPIO / peripheral function |
| Pin 14 | PA09 — GPIO / peripheral function |
| Pin 15 | PA10 — GPIO / peripheral function |
| Pin 16 | PA11 — GPIO / peripheral function |
| Pin 17 | PA12 — GPIO / peripheral function |
| Pin 18 | PA13 — GPIO / peripheral function |
| Pin 19 | PA14 — GPIO / peripheral function |
| Pin 20 | PA15 — GPIO / peripheral function |
| Pin 21 | PA16 — GPIO / peripheral function |
| Pin 22 | PA17 — GPIO / peripheral function |
| Pin 23 | PA18 — GPIO / peripheral function |
| Pin 24 | PA19 — GPIO / peripheral function |
| Pin 25 | PA20 — GPIO / peripheral function |
| Pin 26 | PA21 — GPIO / peripheral function |
| Pin 27 | PA22 — GPIO / peripheral function |
| Pin 28 | PA23 — GPIO / peripheral function |
| Pin 29 | PB00 — GPIO / peripheral function |
| Pin 30 | PB01 — GPIO / peripheral function |
| Pin 31 | PB02 — GPIO / peripheral function |
| Pin 32 | PB03 — GPIO / peripheral function |
| Pin 33 | PB04 — GPIO / peripheral function |
| Pin 34 | PB05 — GPIO / peripheral function |
| Pin 35 | PB06 — GPIO / peripheral function |
| Pin 36 | PB07 — GPIO / peripheral function |
| Pin 37 | PB08 — GPIO / peripheral function |
| Pin 38 | PB09 — GPIO / peripheral function |
| Pin 39 | PB10 — GPIO / peripheral function |
| Pin 40 | PB11 — GPIO / peripheral function |
| Pin 41 | PB12 — GPIO / peripheral function |
| Pin 42 | PB13 — GPIO / peripheral function |
| Pin 43 | PB14 — GPIO / peripheral function |
| Pin 44 | PB15 — GPIO / peripheral function |
| Pin 45 | VDDCORE — Core supply (regulated internally) |
| Pin 46 | GND — Ground |
| Pin 47 | PC00 — GPIO / peripheral function |
| Pin 48 | PC01 — GPIO / peripheral function |
| Pin 49 | PC02 — GPIO / peripheral function |
| Pin 50 | PC03 — GPIO / peripheral function |
| Pin 51 | PC04 — GPIO / peripheral function |
| Pin 52 | PC05 — GPIO / peripheral function |
| Pin 53 | PC06 — GPIO / peripheral function |
| Pin 54 | PC07 — GPIO / peripheral function |
| Pin 55 | PC08 — GPIO / peripheral function |
| Pin 56 | PC09 — GPIO / peripheral function |
| Pin 57 | PC10 — GPIO / peripheral function |
| Pin 58 | PC11 — GPIO / peripheral function |
| Pin 59 | PC12 — GPIO / peripheral function |
| Pin 60 | PC13 — GPIO / peripheral function |
| Pin 61 | PC14 — GPIO / peripheral function |
| Pin 62 | PC15 — GPIO / peripheral function |
| Pin 63 | PC16 — GPIO / peripheral function |
| Pin 64 | PC17 — GPIO / peripheral function |
| Pin 65 | PC18 — GPIO / peripheral function |
| Pin 66 | PC19 — GPIO / peripheral function |
| Pin 67 | PC20 — GPIO / peripheral function |
| Pin 68 | PC21 — GPIO / peripheral function |
| Pin 69 | PC22 — GPIO / peripheral function |
| Pin 70 | PC23 — GPIO / peripheral function |
| Pin 71 | PD00 — GPIO / peripheral function |
| Pin 72 | PD01 — GPIO / peripheral function |
| Pin 73 | PD02 — GPIO / peripheral function |
| Pin 74 | PD03 — GPIO / peripheral function |
| Pin 75 | PD04 — GPIO / peripheral function |
| Pin 76 | PD05 — GPIO / peripheral function |
| Pin 77 | PD06 — GPIO / peripheral function |
| Pin 78 | PD07 — GPIO / peripheral function |
| Pin 79 | PD08 — GPIO / peripheral function |
| Pin 80 | PD09 — GPIO / peripheral function |
| Pin 81 | PD10 — GPIO / peripheral function |
| Pin 82 | PD11 — GPIO / peripheral function |
| Pin 83 | PD12 — GPIO / peripheral function |
| Pin 84 | PD13 — GPIO / peripheral function |
| Pin 85 | PD14 — GPIO / peripheral function |
| Pin 86 | PD15 — GPIO / peripheral function |
| Pin 87 | PE00 — GPIO / peripheral function |
| Pin 88 | PE01 — GPIO / peripheral function |
| Pin 89 | PE02 — GPIO / peripheral function |
| Pin 90 | PE03 — GPIO / peripheral function |
| Pin 91 | PE04 — GPIO / peripheral function |
| Pin 92 | PE05 — GPIO / peripheral function |
| Pin 93 | NRST — Reset input (active low) |
| Pin 94 | TST — Test mode (tie to VDDI/O for normal operation) |
| Pin 95 | FWUP0 — Firmware upgrade wake-up pin |
| Pin 96 | VBAT — Backup battery supply |
| Pin 97 | GND — Ground |
| Pin 98 | XIN — Crystal oscillator input |
| Pin 99 | XOUT — Crystal oscillator output |
| Pin 100 | VDDIO — I/O supply voltage |
Typische Anwendungen
ATSAM4LS8CA-AU ist geeignet für 6 Anwendungs: Battery-Powered Wireless Sensor Nodes, Portable Industrial Instrumentation, Building Automation Controllers, Consumer Human-Interface Devices, Low-Power IoT Gateways, Energy-Harvesting Sensor Nodes.
Battery-Powered Wireless Sensor Nodes
The ATSAM4LS8CA-AU is well suited to battery-powered wireless sensor nodes thanks to its picoPower technology, multiple deep-sleep modes, and 1.68 V to 3.6 V operating voltage. Placed at the heart of a sensor node running a duty-cycled application, the part wakes periodically to take ADC readings and transmit on a companion sub-GHz or BLE transceiver, then returns to deep sleep. The 64 KB SRAM provides ample headroom for protocol stack buffers, while the 48 MHz Cortex-M4 core can run sensor fusion algorithms in active periods without taxing the battery budget.
Empfohlen
Portable Industrial Instrumentation
For portable industrial instrumentation such as handheld multimeters, calibration tools, and process signal sources, the ATSAM4LS8CA-AU provides the right balance of compute and power efficiency. The Cortex-M4 core with DSP extensions can run real-time digital filtering on ADC samples, while the 512 KB flash stores calibration tables, look-up curves, and user-interface graphics. Designers can power the device from a single-cell Li-ion or 3.3 V rail, leveraging the wide 1.68 V to 3.6 V input range to extend battery life in field-service equipment.
Empfohlen
Building Automation Controllers
In building automation controllers (thermostats, lighting controllers, HVAC nodes), the ATSAM4LS8CA-AU integrates multiple USART, SPI, and TWI channels that are commonly used to interface with sensors, actuators, and wireless modules. The 100-pin TQFP package exposes the full peripheral set, allowing the same MCU to drive an LCD, talk to a Modbus or BACnet transceiver, and read environmental sensors concurrently. Its industrial temperature range (-40 °C to +85 °C) ensures reliable operation in unheated equipment closets.
Empfohlen
Consumer Human-Interface Devices
Consumer human-interface devices such as remote controls, smart-home panels, and wearable accessories benefit from the ATSAM4LS8CA-AU's combination of 512 KB flash, 64 KB SRAM, and DSP extensions. The 48 MHz Cortex-M4 can drive small TFT or OLED displays through SPI, scan touch panels through I2C, and run lightweight graphics libraries from flash. The picoPower sleep modes extend battery life in always-on devices that wake on touch or motion events.
Empfohlen
Low-Power IoT Gateways
As the host MCU in a low-power IoT gateway, the ATSAM4LS8CA-AU can aggregate data from multiple end nodes over USART or SPI links and forward it over Wi-Fi, Ethernet, or cellular. The 512 KB flash accommodates TLS libraries and protocol stacks, while the 64 KB SRAM buffers incoming packets before forwarding. The Cortex-M4 DSP extensions accelerate any on-gateway signal processing, such as FFT-based vibration or audio analysis at the edge.
Empfohlen
Energy-Harvesting Sensor Nodes
For energy-harvesting sensor nodes (solar, thermal, vibration), the ATSAM4LS8CA-AU's 1.68 V minimum operating voltage lets the device start up and run from low-voltage harvesters before the storage capacitor charges fully. Combined with picoPower technology, the part can wake, take a measurement, transmit, and return to deep sleep while drawing minimal average current. The wide operating voltage range also tolerates the variable output of unregulated energy harvesters without additional power conditioning.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATSAM4LS8CA-AU – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATSAM4LS8CA-AUR | ATSAM4LS4CA-AU | ATSAM4LS2CA-AU | ATSAM4LC8CA-AU | ATSAM4LS16CA-AU |
|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 |
| Maximum Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 512 KB | 512 KB | 256 KB (-50%) | 128 KB (-75%) | 512 KB | 1024 KB (+100%) |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Operating Voltage | 1.68 V to 3.6 V | 1.68 V to 3.6 V | 1.68 V to 3.6 V | 1.68 V to 3.6 V | 1.68 V to 3.6 V | 1.68 V to 3.6 V |
| Low-Power Technology | picoPower (deep-sleep modes) | picoPower (deep-sleep modes) | picoPower (deep-sleep modes) | picoPower (deep-sleep modes) | Standard sleep modes | picoPower (deep-sleep modes) |
| Packaging Format | Tray (-AU suffix) | Tape & Reel (-AUR suffix) | Tray (-AU suffix) | Tray (-AU suffix) | Tray (-AU suffix) | Tray (-AU suffix) |
Wichtigste Unterscheidungsmerkmale
- Same 100-TQFP footprint across the SAM4LS family (vs. ATSAM4LS4CA-AU)
- picoPower deep-sleep modes vs standard sleep (vs. ATSAM4LC8CA-AU)
- 512 KB flash headroom vs larger flash (vs. ATSAM4LS16CA-AU)
Designhinweise
Take advantage of the SAM4L picoPower technology by using the deep-sleep modes whenever possible. The 1.68 V minimum operating voltage allows the part to start up from partially charged energy storage capacitors, but designers should provide a decoupling network of 100 nF and 4.7 uF capacitors close to each VDDIO and VDDCORE pin to suppress switching noise on the internal regulator. Estimated: a typical active current of 8 mA at 48 MHz drops to single-digit uA in deep sleep, providing 10x to 100x current savings in duty-cycled applications.
Use a 4-layer PCB with a dedicated ground and a dedicated core power plane for the ATSAM4LS8CA-AU. Place the 12 MHz or 32.768 kHz crystal within 5 mm of the XIN/XOUT pins, with a grounded guard ring to isolate the oscillator from switching traces. The 0.5 mm pitch of the 100-pin TQFP package requires JEDEC-compliant reflow profiles and standard no-clean flux for reliable soldering.
Do not commit overvoltage on VBAT (absolute maximum 3.6 V). The TST pin must be tied to VDDI/O for normal operation; floating this pin can put the part in test mode. Estimated: the FWUP0 firmware-upgrade wake-up pin is not a general-purpose GPIO and should not be repurposed without consulting the application note. Always validate firmware size against the 512 KB flash budget before committing to peripheral libraries.
Compliance-Informationen
RoHS compliant per Microchip product page; lead-free green packaging. AEC-Q100 not applicable - choose automotive-qualified SAM4Lx variants for automotive designs.
