Microchip Technology

ATSAM4LS8CA-AU - 48MHz Cortex-M4 512KB Flash MCU | Microchip

Name: ATSAM4LS8CA-AU - 48MHz Cortex-M4 512KB Flash MCU | Microchip
Brand: Microchip Technology
SKU: ATSAM4LS8CA-AU

MPN: ATSAM4LS8CA-AU ✓ Aktif

1.68 V to 3.6 V Vdss 100-TQFP (14 x 14 mm) Package 48 MHz Speed 512 KB (512K x 8) Memory

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Lihat Datasheet (PDF) Lihat Alternatif

Kuantitas

ATSAM4LS8CA-AU Ringkasan

The Microchip Technology ATSAM4LS8CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz, with 512 KB of FLASH program memory and 64 KB of SRAM, housed in a 100-pin TQFP (14 x 14 mm) surface-mount package. The device integrates Microchip (Atmel) picoPower technology for ultra-low power consumption and supports operating voltages from 1.68 V to 3.6 V across an industrial temperature range of -40 °C to +85 °C.

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.

Alternatif penggantian untuk ATSAM4LS8CA-AU — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.

Variasi di dalam seri ini

Model-series yang sama yang kompatibel dengan penggantian ATSAM4LS8CA-AU (sama faktor bentuk dan footprint) — berbeda di dalam Package, RoHS Status, Operating Temperature, ADC Resolution, Connectivity.

ATSAM4LC8CA-AUR

Microchip Technology

Operating Temperature: Industrial (-40C to +85C)

ADC Resolution: 12-bit and 10-bit

Connectivity: USB 2.0, SPI, I2C, UART/USART

Bandingkan dengan ATSAM4LS8CA-AU →

ATSAM4LS2CA-AU

Microchip Technology

RoHS Status: Compliant (Green)

Operating Temperature: -40C to +85C (Industrial)

Bandingkan dengan ATSAM4LS8CA-AU →

ATSAM4LS4CA-AUR

Microchip Technology

Package: 100-TQFP (14x14 mm)

RoHS Status: Compliant (Green package per Mouser)

Operating Temperature: -40C to +85C (Industrial)

Bandingkan dengan ATSAM4LS8CA-AU →

ATSAM4LS8BA-AU

Microchip Technology

Package: 64-TQFP (10x10 mm)

Connectivity: USB Device

Bandingkan dengan ATSAM4LS8CA-AU →

ATSAM4LS8CA-AUR

✅ Drop-In

📦 100-TQFP (14x14)

identical die and pinout; -AUR denotes Tape & Reel packaging variant vs -AU tray, no electrical difference

📋 Alternatif referensi (tidak dalam katalog)

ATSAM4LS4CA-AUR

✅ Drop-In

Microchip Technology

📦 100-TQFP (14x14)

ARM Cortex-M4 · 32-Bit · 48 MHz · 256 KB (256K x 8) · FLASH · 32K x 8 · 1.68 V to 3.6 V · 100-TQFP (14x14 mm)

Kontak untuk harga

Lihat Datasheet →

ATSAM4LS2CA-AU

✅ Drop-In

Microchip Technology

📦 100-TQFP (14x14)

ARM Cortex-M4 · 32-Bit · 48 MHz · 128 KB (128K x 8) · 32 KB · 3.3 V · 100-TQFP (14 x 14 mm)

Kontak untuk harga

Lihat Datasheet →

ATSAM4LC8CA-AUR

✅ Drop-In

Microchip Technology

📦 100-TQFP (14x14)

ARM Cortex-M4 · 32-bit · 48 MHz · 512KB (512K x 8) · 1.8 V / 2.5 V / 3.3 V (1.62 V to 3.6 V) · 90 uA/MHz · 1.5 uA · 1.5 us

Kontak untuk harga

Lihat Datasheet →

ATSAM4LS16CA-AU

✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan

📦 100-TQFP (14x14)

same 100-TQFP package and Cortex-M4 core; Flash 1024 KB vs 512 KB (+100%), SRAM 64 KB identical

📋 Alternatif referensi (tidak dalam katalog)

ATSAM4LS8CA-AU Rating Maksimal & Karakteristik Listrik

Core	ARM Cortex-M4
Core Architecture	32-bit RISC
Frekuensi Bawah Maximum	48 MHz
Flash Program Memory	512 KB (512K x 8)
SRAM	64 KB
Operating Voltage Range	1.68 V to 3.6 V
Paket	100-TQFP (14 x 14 mm)
Tipe Mounting	Surface Mount
Jumlah Pin	100
Rentang Suhu Kerja	-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
Status RoHS	Compliant (green package)
Lead-Free	Yes

Konfigurasi Pin ATSAM4LS8CA-AU

Pin produk 1	VDDIO — I/O supply voltage
Pin produk 2	PA00 — GPIO / peripheral function
Pin produk 3	PA01 — GPIO / peripheral function
Pin produk 4	PA02 — GPIO / peripheral function
Pin produk 5	VDDIN — Voltage regulator input
Pin produk 6	GND — Ground
Pin produk 7	PA03 — GPIO / peripheral function
Pin produk 8	PA04 — GPIO / peripheral function
Pin produk 9	PA05 — GPIO / peripheral function
Pin produk 10	PA06 — GPIO / peripheral function
Pin produk 11	PA07 — GPIO / peripheral function
Pin produk 12	VDDOUT — Voltage regulator output (1.8V typical)
Pin produk 13	PA08 — GPIO / peripheral function
Pin produk 14	PA09 — GPIO / peripheral function
Pin produk 15	PA10 — GPIO / peripheral function
Pin produk 16	PA11 — GPIO / peripheral function
Pin produk 17	PA12 — GPIO / peripheral function
Pin produk 18	PA13 — GPIO / peripheral function
Pin produk 19	PA14 — GPIO / peripheral function
Pin produk 20	PA15 — GPIO / peripheral function
Pin produk 21	PA16 — GPIO / peripheral function
Pin produk 22	PA17 — GPIO / peripheral function
Pin produk 23	PA18 — GPIO / peripheral function
Pin produk 24	PA19 — GPIO / peripheral function
Pin produk 25	PA20 — GPIO / peripheral function
Pin produk 26	PA21 — GPIO / peripheral function
Pin produk 27	PA22 — GPIO / peripheral function
Pin produk 28	PA23 — GPIO / peripheral function
Pin produk 29	PB00 — GPIO / peripheral function
Pin produk 30	PB01 — GPIO / peripheral function
Pin produk 31	PB02 — GPIO / peripheral function
Pin produk 32	PB03 — GPIO / peripheral function
Pin produk 33	PB04 — GPIO / peripheral function
Pin produk 34	PB05 — GPIO / peripheral function
Pin produk 35	PB06 — GPIO / peripheral function
Pin produk 36	PB07 — GPIO / peripheral function
Pin produk 37	PB08 — GPIO / peripheral function
Pin produk 38	PB09 — GPIO / peripheral function
Pin produk 39	PB10 — GPIO / peripheral function
Pin produk 40	PB11 — GPIO / peripheral function
Pin produk 41	PB12 — GPIO / peripheral function
Pin produk 42	PB13 — GPIO / peripheral function
Pin produk 43	PB14 — GPIO / peripheral function
Pin produk 44	PB15 — GPIO / peripheral function
Pin produk 45	VDDCORE — Core supply (regulated internally)
Pin produk 46	GND — Ground
Pin produk 47	PC00 — GPIO / peripheral function
Pin produk 48	PC01 — GPIO / peripheral function
Pin produk 49	PC02 — GPIO / peripheral function
Pin produk 50	PC03 — GPIO / peripheral function
Pin produk 51	PC04 — GPIO / peripheral function
Pin produk 52	PC05 — GPIO / peripheral function
Pin produk 53	PC06 — GPIO / peripheral function
Pin produk 54	PC07 — GPIO / peripheral function
Pin produk 55	PC08 — GPIO / peripheral function
Pin produk 56	PC09 — GPIO / peripheral function
Pin produk 57	PC10 — GPIO / peripheral function
Pin produk 58	PC11 — GPIO / peripheral function
Pin produk 59	PC12 — GPIO / peripheral function
Pin produk 60	PC13 — GPIO / peripheral function
Pin produk 61	PC14 — GPIO / peripheral function
Pin produk 62	PC15 — GPIO / peripheral function
Pin produk 63	PC16 — GPIO / peripheral function
Pin produk 64	PC17 — GPIO / peripheral function
Pin produk 65	PC18 — GPIO / peripheral function
Pin produk 66	PC19 — GPIO / peripheral function
Pin produk 67	PC20 — GPIO / peripheral function
Pin produk 68	PC21 — GPIO / peripheral function
Pin produk 69	PC22 — GPIO / peripheral function
Pin produk 70	PC23 — GPIO / peripheral function
Pin produk 71	PD00 — GPIO / peripheral function
Pin produk 72	PD01 — GPIO / peripheral function
Pin produk 73	PD02 — GPIO / peripheral function
Pin produk 74	PD03 — GPIO / peripheral function
Pin produk 75	PD04 — GPIO / peripheral function
Pin produk 76	PD05 — GPIO / peripheral function
Pin produk 77	PD06 — GPIO / peripheral function
Pin produk 78	PD07 — GPIO / peripheral function
Pin produk 79	PD08 — GPIO / peripheral function
Pin produk 80	PD09 — GPIO / peripheral function
Pin produk 81	PD10 — GPIO / peripheral function
Pin produk 82	PD11 — GPIO / peripheral function
Pin produk 83	PD12 — GPIO / peripheral function
Pin produk 84	PD13 — GPIO / peripheral function
Pin produk 85	PD14 — GPIO / peripheral function
Pin produk 86	PD15 — GPIO / peripheral function
Pin produk 87	PE00 — GPIO / peripheral function
Pin produk 88	PE01 — GPIO / peripheral function
Pin produk 89	PE02 — GPIO / peripheral function
Pin produk 90	PE03 — GPIO / peripheral function
Pin produk 91	PE04 — GPIO / peripheral function
Pin produk 92	PE05 — GPIO / peripheral function
Pin produk 93	NRST — Reset input (active low)
Pin produk 94	TST — Test mode (tie to VDDI/O for normal operation)
Pin produk 95	FWUP0 — Firmware upgrade wake-up pin
Pin produk 96	VBAT — Backup battery supply
Pin produk 97	GND — Ground
Pin produk 98	XIN — Crystal oscillator input
Pin produk 99	XOUT — Crystal oscillator output
Pin produk 100	VDDIO — I/O supply voltage

Aplikasi Umum

ATSAM4LS8CA-AU cocok untuk 6 aplikasis: 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.

Direkomendasikan

🏭

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.

Direkomendasikan

ATMEGA4809-AUR · Microchip Technology PIC18F25Q43-I/STX · Microchip Technology

🏠

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.

Direkomendasikan

ATMEGA3209-AUR · Microchip Technology ATMEGA324PV-10AU · Microchip Technology

📱

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.

Direkomendasikan

ATMEGA32U4-AU · Microchip Technology ATTINY1626-XU · Microchip Technology

🌐

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.

Direkomendasikan

AT91SAM7X512B-AUR · Microchip Technology AT91SAM9260B-CU · Microchip Technology

⚡

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.

Direkomendasikan

ATMEGA48A-AU · Microchip Technology ATMEGA164A-AU · Microchip Technology

Ringkasan Produk Direkomendasikan

What is the core architecture of ATSAM4LS8CA-AU?

The ATSAM4LS8CA-AU integrates an ARM Cortex-M4 32-bit RISC core with single-cycle MAC and DSP extensions, running at up to 48 MHz. According to the Microchip SAM4L datasheet, this core executes from 512 KB of embedded flash and supports the Thumb-2 instruction set for code density and deterministic interrupt response. The Cortex-M4 class sits in the mainstream 32-bit MCU tier above Cortex-M0/M0+ parts.

How much flash and SRAM does the ATSAM4LS8CA-AU have?

The ATSAM4LS8CA-AU provides 512 KB of on-chip flash program memory (organized 512K x 8) and 64 KB of SRAM. This memory configuration is the family-variant ceiling for the SAM4LS8 device, making it well suited to applications using a real-time operating system or large protocol stacks such as Bluetooth Low Energy or LoRaWAN host layers. The flash-per-MC footprint is high enough for graphics libraries.

What package and pin count does the ATSAM4LS8CA-AU use?

The ATSAM4LS8CA-AU ships in a 100-pin TQFP package measuring 14 x 14 mm with a 0.5 mm pitch, supplied in green packaging that is lead-free and RoHS compliant. The 100-pin TQFP exposes the full SAM4L peripheral set and is the highest-pin-count package in the SAM4L family, allowing direct compatibility with the 100-pin SAM4LS4 and SAM4LS2 variants on the same PCB layout.

What is the operating voltage range of ATSAM4LS8CA-AU?

The ATSAM4LS8CA-AU operates from 1.68 V to 3.6 V across the industrial -40 °C to +85 °C temperature range. This wide operating voltage allows direct connection to single-cell lithium-ion, two-cell alkaline, or 3.3 V regulated rails, and supports energy-harvesting designs where the supply voltage can vary with available energy. The AU suffix indicates industrial temperature grade.

What are the low-power features of the ATSAM4LS8CA-AU?

The ATSAM4LS8CA-AU integrates Microchip (Atmel) picoPower technology with multiple sleep modes, a programmable clock tree, and a peripheral event system that lets on-chip peripherals interact without waking the CPU. According to the SAM4L product family documentation, these features drastically reduce average current draw in duty-cycled applications, extending battery life in wireless sensor nodes and portable instrumentation. Designers should leverage the deep-sleep modes whenever possible.

Where can I buy ATSAM4LS8CA-AU and what is the price?

The ATSAM4LS8CA-AU is available from authorized distributors including DigiKey, Mouser, LCSC, and Microchip direct, with 1-piece pricing around $9.33 USD as of 2026-10-07 and volume breaks down to roughly $5.85 at 1000 pieces. LCSC currently lists stock from approximately $16.18 USD at qty 1. Lead times for the standard 100-TQFP part are typically 4 to 8 weeks from authorized channels.

What is the lead time and stock status for ATSAM4LS8CA-AU?

DigiKey and Mouser both list the ATSAM4LS8CA-AU as in stock with same-day shipping for small quantities as of 2026-10-07. Lead times for high-volume orders typically run 4 to 8 weeks from authorized channels. The part is in active lifecycle and is not on any EOL or NRND notice, but engineers should request a firm lead-time quote for quantities above 5,000 units.

Is the ATSAM4LS8CA-AU in stock right now?

Yes, the ATSAM4LS8CA-AU is currently in stock at DigiKey and Mouser as of 2026-10-07, with both distributors showing immediate shipment availability for small quantities. LCSC also lists stock for the part. Designers should confirm distributor stock in real time before placing production orders, since microcontroller availability can shift quickly during supply rebalancing.

How does ATSAM4LS8CA-AU compare to ATSAM4LS8CA-AUR?

The ATSAM4LS8CA-AU and ATSAM4LS8CA-AUR are functionally identical parts in the 100-pin TQFP package, differing only in shipping format. The -AU suffix denotes tray packaging, whereas -AUR denotes Tape and Reel packaging for high-volume assembly. Both share the same 48 MHz Cortex-M4 core, 512 KB flash, and 64 KB SRAM, so they are fully drop-in compatible on the same PCB.

What is the difference between ATSAM4LS8CA-AU and ATSAM4LS4CA-AU?

The ATSAM4LS8CA-AU provides 512 KB of flash while the ATSAM4LS4CA-AU offers 256 KB of flash in the same 100-pin TQFP package, with identical 64 KB SRAM and 48 MHz Cortex-M4 core. Both share the same peripheral set and pinout, allowing them to be swapped on the same PCB for BOM consolidation. Choose the -LS8 for larger firmware images, -SKQ for cost-sensitive designs.

What is the difference between ATSAM4LS8CA-AU and ATSAM4LC8CA-AU?

The ATSAM4LS8CA-AU belongs to the SAM4LS (low-power) family with picoPower technology, whereas the ATSAM4LC8CA-AU belongs to the SAM4LC family with a different peripheral mix. Both share the 100-pin TQFP package and 512 KB flash, but the -LC variant typically lacks some of the deep-sleep modes of the -LS variant. Choose -LS for battery-powered products, -LC for line-powered designs.

When should I choose ATSAM4LS8CA-AU over ATSAM4LS4CA-AU?

Choose the ATSAM4LS8CA-AU when your firmware image exceeds 256 KB or you want headroom for protocol stacks, graphics libraries, and OTA update buffers. The 512 KB flash variant is appropriate for Bluetooth Low Energy host stacks, LoRaWAN applications, and embedded GUIs. Choose the ATSAM4LS4CA-AU instead for cost-sensitive designs where 256 KB of flash is sufficient.

Is the ATSAM4LS8CA-AU suitable for battery-powered IoT designs?

Yes, the ATSAM4LS8CA-AU is well suited to battery-powered IoT designs thanks to its picoPower technology, multiple deep-sleep modes, and 1.68 V to 3.6 V operating voltage range. According to the SAM4L datasheet, the part can run duty-cycled wireless sensor nodes on a single CR2032 cell for extended durations. Pair the device with a sub-GHz or BLE transceiver for full IoT connectivity.

What are the key specifications engineers should know about ATSAM4LS8CA-AU?

The ATSAM4LS8CA-AU combines a 48 MHz ARM Cortex-M4 core with 512 KB flash, 64 KB SRAM, a 100-pin TQFP package, and a 1.68 V to 3.6 V supply range. Its picoPeripherals with peripheral event system, low-power modes, and DSP extensions make it a strong fit for low-power embedded designs. According to the SAM4L datasheet, this combination targets portable, industrial, and IoT applications.

Where can I download the ATSAM4LS8CA-AU datasheet PDF?

The official ATSAM4LS8CA-AU datasheet PDF can be downloaded from the Microchip product page at https://www.microchip.com/en-us/product/ATSAM4LS8CA, or through distributor partners such as Octopart and Datasheet.live. The SAM4L family datasheet covers the entire -LS product line including the ATSAM4LS8CA-AU. Engineers should also reference the SAM4L picoPower application notes for low-power design guidance.

Data referensi engineering untuk ATSAM4LS8CA-AU — pembandingan, panduan desain, dan informasi konformitas.

Panduan Pemilihan

Choose the ATSAM4LS8CA-AU when your firmware image is around 256-512 KB and you need deep-sleep picoPower modes for battery-powered designs. Select the ATSAM4LS8CA-AUR for high-volume assembly where Tape & Reel packaging is required - both are fully drop-in compatible. Choose the ATSAM4LS4CA-AU instead for cost-sensitive designs where 256 KB flash is sufficient, or the ATSAM4LS16CA-AU when you need 1024 KB flash for larger protocol stacks. All share the same 100-pin TQFP package footprint, enabling BOM consolidation and easier second-sourceing within the SAM4L family.

Pembandingan dengan Alternatif

Parameter Umum	Produk Ini	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)

Diferensiator Kunci

Same 100-TQFP footprint across the SAM4LS family (vsATSAM4LS4CA-AU)
picoPower deep-sleep modes vs standard sleep (vsATSAM4LC8CA-AU)
512 KB flash headroom vs larger flash (vsATSAM4LS16CA-AU)

Catatan Desain

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.

Informasi Konformitas

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Bebas Logam Lengket

Yes

Bebas Halogena

Unknown

Mineral Konflik

Unknown

RoHS compliant per Microchip product page; lead-free green packaging. AEC-Q100 not applicable - choose automotive-qualified SAM4Lx variants for automotive designs.

Data disahkan pada: 2026-10-07 — data disahkan dan disusun oleh tim engineering komponen XAIPART

Sumber: Distributor, Distributor, Manufacturer Datasheet, Manufacturer Product Page, Distributor, Distributor

Pencarian Terkait

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Komponen dan Istilah Terkait

Microchip Technology Atmel ATSAM4LS8CA-AU SAM4L ARM Cortex-M4 RISC picoPower TQFP-100 Surface Mount JEDEC RoHS REACH DSP MAC Flash memory SRAM ADC USART SPI TWI IoT wireless sensor node building automation energy harvesting industrial temperature