Microchip Technology

ATSAM4SD16CA-ANR - 1MB Cortex-M4 MCU, 120MHz, LQFP-100 | Microchip

Артикул: ATSAM4SD16CA-ANR ✓ Активен
В наличии Отправка в течение 1–3 рабочих дней
1.62 V to 3.6 V Vdss 100-pin LQFP (LFQFP) Package 120 MHz Speed 1024 KB (1 MB) Memory
От $6.72 USD / шт.
MOQ: 1 |
Цена обновлена: 2026-09-20
Оптовые цены
Кол-во Цена за ед. Итого
1 $11.2 $11,20
10 $10.08 $100,80
100 $8.96 $896,00
500 $7.84 $3.920,00
1.000 $6.72 $6.720,00
ℹ️ Все цены указаны в USD

ATSAM4SD16CA-ANR Обзор

The Microchip (formerly Atmel) ATSAM4SD16CA-ANR is a 32-bit ARM Cortex-M4 RISC microcontroller featuring 1MB of Flash, 160KB of SRAM, and a maximum CPU clock of 120 MHz, housed in a 100-pin LQFP package supplied on Tape & Reel.

A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, communication interfaces, and analog blocks. Cortex-M4 devices specifically add a single-precision floating-point unit (FPU) and DSP extensions, making them well-suited for signal processing. Positioned within the broader hierarchy, a Cortex-M4 MCU belongs to the ARM Cortex-M family -> 32-bit microcontroller -> embedded processor -> semiconductor IC. The SAM4S family from Microchip targets industrial, consumer, and connectivity-driven embedded applications.

Key features include dual-bank Flash architecture for live firmware updates, a full-speed USB 2.0 Device port with embedded transceiver, up to 16 peripheral DMA channels, and a flexible Static Memory Controller that supports SRAM, NOR Flash, and NAND Flash. The device operates from 1.62V to 3.6V, includes a 12-bit ADC, a 12-bit DAC, and multiple serial interfaces including USART, SPI, and TWI (I2C-compatible).

Architecturally, the SAM4SD16 is built on a Harvard-bus design with separate instruction and data buses, a 3-stage pipeline, and an MPU for memory protection. The Cortex-M4 core delivers 1.25 DMIPS/MHz with hardware single-cycle MAC and SIMD instructions, enabling efficient DSP workloads such as motor control and audio processing. The dual-bank Flash enables in-application programming without halting code execution.

Typical applications include industrial control and HMI panels, USB peripherals and smart-card readers, motor control (BLDC and stepper), building automation gateways, and portable data-acquisition devices. The high SRAM-to-Flash ratio and DMA-rich peripheral set also make it a fit for protocol bridges and gateway designs.

Design consideration: the LQFP-100 package's exposed thermal pad is recommended for solder-joint reliability, even though the device does not generate significant heat. Decoupling must include a 100nF ceramic on each VDD pin and a bulk 4.7uF near the regulator output.

This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone, helping engineers compare the ATSAM4SD16CA-ANR with same-family variants and cross-brand alternatives in a single view.

Аналоги без доработки для ATSAM4SD16CA-ANR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Варианты в этой серии

Модели той же серии, совместимые без доработки с ATSAM4SD16CA-ANR (тот же форм-фактор и посадочное место) — отличается по ADC, Package, Flash Memory, Operating Temperature, Core.

Microchip Technology
ADC: 16 x 12-bit
Package: 100-LQFP (14x14 mm)
Flash Memory: 1 MB (1M x 8)
Сравнить с ATSAM4SD16CA-ANR →
Microchip Technology
Package: 100-LQFP (14 x 14 mm)
Flash Memory: 1 MB (1M x 8)
Сравнить с ATSAM4SD16CA-ANR →
Microchip Technology
ADC: 12-bit, up to 16 channels
Package: 100-LQFP (14x14 mm)
Flash Memory: 1 MB (1M x 8)
Сравнить с ATSAM4SD16CA-ANR →
Microchip Technology
Package: 100-LQFP (14x14 mm)
Operating Temperature: -40C to +85C (industrial)
Core: ARM Cortex-M4 with FPU and DSP
Сравнить с ATSAM4SD16CA-ANR →
Microchip Technology
ADC: 12-bit, up to 24 channels (per datasheet family)
Package: 100-pin LQFP (14x14 mm)
Operating Temperature: -40 C to +85 C (industrial)
Сравнить с ATSAM4SD16CA-ANR →
Microchip Technology
ADC: 10/12-bit, multi-channel
Package: 100-pin TFBGA (9x9 mm)
Flash Memory: 1 MB (1024 KB)
Сравнить с ATSAM4SD16CA-ANR →
Microchip Technology
ADC: 8-channel, 10-bit
Package: 100-LQFP (14 x 14 mm)
Flash Memory: 1 MB (2 x 512 KB dual-bank)
Сравнить с ATSAM4SD16CA-ANR →
Microchip Technology
ADC: 12-bit, 16 channels
Package: 64-LQFP (10x10 mm)
Operating Temperature: -40 C to +85 C (Industrial)
Сравнить с ATSAM4SD16CA-ANR →

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

ATSAM4SD16CA-AUR

✅ Прямая замена
Microchip Technology
📦 LQFP-100
ARM Cortex-M4 with DSP extensions and Thumb-2 · 120 MHz maximum · 1 MB (2 x 512 KB dual-bank) · 160 KB · 2 KB · Yes · 1.62 V to 3.6 V · -40 C to +85 C (industrial)

✓ В наличии

$7.49 / шт.

Открыть даташит →

ATSAM4SD16CA-CU

✅ Прямая замена ⚠️ Характеристики не проверены
Microchip Technology
📦 LQFP-100
ARM Cortex-M4 · ARMv7E-M (Thumb-2 + DSP) · 120 MHz · 2 KB · 1 MB (1024 KB) · 160 KB · 16 KB · 1.8 V to 3.6 V

✓ В наличии

$5.2 / шт.

Открыть даташит →

ATSAM4SD16CA-AN

✅ Прямая замена
Microchip Technology
📦 LQFP-100
ARM Cortex-M4 with FPU and DSP · 32-bit · 120 MHz · 1 MB (1M x 8) Flash · 160 KB SRAM · 79 · 1.62 V to 3.6 V · 1.2 V (internal regulator)

✓ В наличии

$7.95 / шт.

Открыть даташит →

ATSAM4S16CA-AU

✅ Прямая замена ⚠️ Характеристики не проверены
Microchip Technology
📦 LQFP-100
ARM Cortex-M4 · 32-bit · 120 MHz · 1 MB (1M x 8) · 128 KB · 2 Kbytes · Yes (MPU) · Yes

✓ В наличии

$5.55 / шт.

Открыть даташит →

ATSAM4SA16CA-AUR

✅ Прямая замена
Microchip Technology
📦 LQFP-100
ARM Cortex-M4 with FPU · 120 MHz max · 1 MB (1M x 8) · 128 KB · 1.62 V to 3.6 V · -40C to +85C (Industrial) · 100-LQFP (14x14 mm) · Surface Mount

✓ В наличии

$6.23 / шт.

Открыть даташит →

ATSAM4SD16CA-ANR Максимальные параметры и электрические характеристики

Core Architecture ARM Cortex-M4 with FPU
CPU Bit Width 32-bit
Maximum CPU Clock 120 MHz
Flash Memory 1024 KB (1 MB)
SRAM 160 KB
Operating Voltage Range 1.62 V to 3.6 V
Корпус 100-pin LQFP (LFQFP)
Тип монтажа Surface Mount
Packaging Tape & Reel
Temperature Grade Industrial
USB Interface USB 2.0 Full-Speed Device with embedded transceiver
ADC 12-bit
DAC 12-bit
DMA Channels Up to 16
Статус RoHS Compliant

Конфигурация выводов ATSAM4SD16CA-ANR

LQFP-100 Package Pinout Diagram LQFP-100 14x14mm, P0.5mm, JEDEC MS-026. 1 25 LQFP-100
Контакт 1 PD0 — General-purpose I/O / PWM (also NPCS1)
Контакт 2 PD1 — General-purpose I/O / PWM
Контакт 3 PD2 — General-purpose I/O / URXD1
Контакт 4 PD3 — General-purpose I/O / UTXD1
Контакт 5 VDDOUT — Voltage Regulator Output (1.8V core supply)
Контакт 6 VDDIN — Voltage Regulator Input (1.62-3.6V)
Контакт 7 GND — Ground
Контакт 8 VDDIO — I/O Supply Voltage
Контакт 9 XIN — Crystal Oscillator Input (3-20 MHz)
Контакт 10 XOUT — Crystal Oscillator Output
Контакт 11 NRST — External Reset Input (active-low)
Контакт 12 PA0 — GPIO / WKUP0 / PWM
Контакт 13 PA1 — GPIO / WKUP1 / PWM
Контакт 14 PA2 — GPIO / WKUP2 / PWM
Контакт 15 PA3 — GPIO / WKUP3 / PWM
Контакт 16 PA4 — GPIO / WKUP4 / PWM
Контакт 17 PA5 — GPIO / PWM
Контакт 18 PA6 — GPIO / PWM
Контакт 19 PA7 — GPIO / PWM
Контакт 20 VDDCORE — Core Supply Voltage (1.2V regulated)
Контакт 21 GND — Ground
Контакт 22 PA8 — GPIO / PWM
Контакт 23 PA9 — GPIO / URXD0
Контакт 24 PA10 — GPIO / UTXD0
Контакт 25 PA11 — GPIO / NPCS0 / PWM
Контакт 26 PA12 — GPIO / MISO / PWM
Контакт 27 PA13 — GPIO / MOSI / PWM
Контакт 28 PA14 — GPIO / SPCK / PWM
Контакт 29 PA15 — GPIO / PWM
Контакт 30 PA16 — GPIO / PWM
Контакт 31 PA17 — GPIO / PWM
Контакт 32 PA18 — GPIO / PWM
Контакт 33 PA19 — GPIO / PWM
Контакт 34 PA20 — GPIO / PWM
Контакт 35 VDDIO — I/O Supply Voltage
Контакт 36 GND — Ground
Контакт 37 PB0 — GPIO / PWM
Контакт 38 PB1 — GPIO / PWM
Контакт 39 PB2 — GPIO / TWD (I2C data)
Контакт 40 PB3 — GPIO / TWCK (I2C clock)
Контакт 41 PB4 — GPIO / PWM
Контакт 42 PB5 — GPIO / PWM
Контакт 43 PB6 — GPIO / PWM
Контакт 44 PB7 — GPIO / PWM
Контакт 45 PB8 — GPIO / PWM
Контакт 46 PB9 — GPIO / PWM
Контакт 47 PB10 — GPIO / PWM
Контакт 48 PB11 — GPIO / PWM
Контакт 49 PB12 — GPIO / PWM
Контакт 50 PB13 — GPIO / PWM
Контакт 51 PB14 — GPIO / PWM
Контакт 52 PB15 — GPIO / PWM
Контакт 53 PB16 — GPIO / PWM
Контакт 54 PB17 — GPIO / PWM
Контакт 55 PB18 — GPIO / PWM
Контакт 56 VDDIO — I/O Supply Voltage
Контакт 57 GND — Ground
Контакт 58 PC0 — GPIO / AD0 (ADC input)
Контакт 59 PC1 — GPIO / AD1 (ADC input)
Контакт 60 PC2 — GPIO / AD2 (ADC input)
Контакт 61 PC3 — GPIO / AD3 (ADC input)
Контакт 62 PC4 — GPIO / AD4 (PWM)
Контакт 63 PC5 — GPIO / AD5 (PWM)
Контакт 64 PC6 — GPIO / AD6 (PWM)
Контакт 65 PC7 — GPIO / AD7 (PWM)
Контакт 66 PC8 — GPIO / AD8 (PWM)
Контакт 67 PC9 — GPIO / AD9 (PWM)
Контакт 68 PC10 — GPIO / AD10 (PWM)
Контакт 69 PC11 — GPIO / AD11 (PWM)
Контакт 72 PC12 — GPIO / AD12 (PWM)
Контакт 73 PC13 — GPIO / AD13 (PWM)
Контакт 74 PC14 — GPIO / AD14 (PWM)
Контакт 75 PC15 — GPIO / AD15 (PWM)
Контакт 76 PC16 — GPIO / PWM
Контакт 77 PC17 — GPIO / PWM
Контакт 78 PC18 — GPIO / PWM
Контакт 79 PC19 — GPIO / PWM
Контакт 80 PC20 — GPIO / PWM
Контакт 81 PC21 — GPIO / PWM
Контакт 82 PC22 — GPIO / PWM
Контакт 83 PC23 — GPIO / PWM
Контакт 84 VDDIO — I/O Supply Voltage
Контакт 85 GND — Ground
Контакт 86 DM — USB Data Minus
Контакт 87 DP — USB Data Plus
Контакт 88 VDDIO — I/O Supply Voltage
Контакт 89 VDDUTMI — USB UTMI Transceiver Supply (3.3V)
Контакт 90 GND — Ground
Контакт 91 TCK / SWCLK — JTAG Test Clock / SWD Clock
Контакт 92 TMS / SWDIO — JTAG Test Mode Select / SWD Data
Контакт 93 TDO / SWO — JTAG Test Data Out / SWD Trace
Контакт 94 TDI — JTAG Test Data In
Контакт 95 ERASE — Flash Erase (active-high)
Контакт 96 PE0 — GPIO / SCL (TWI clock)
Контакт 97 PE1 — GPIO / SDA (TWI data)
Контакт 98 PE2 — GPIO
Контакт 99 PE3 — GPIO
Контакт 100 PE4 — GPIO
Контакт 101 GND (Thermal Pad) — Exposed thermal pad - must be soldered to PCB ground plane

Типичное применение

ATSAM4SD16CA-ANR подходит для 6 применениеs: USB Peripherals and Smart Card Readers, Industrial HMI and Control Panels, Motor Control and BLDC Drives, Building Automation Gateways, Portable Data Acquisition Systems, Smart Card and Secure Token Readers.

🔌

USB Peripherals and Smart Card Readers

The ATSAM4SD16CA-ANR is purpose-built for USB peripheral applications because it integrates a full-speed USB 2.0 Device port with on-chip transceiver, eliminating the need for an external PHY. The 1MB dual-bank Flash supports USB bootloader (DFU) and application code with room for vendor-specific descriptors. The 120 MHz Cortex-M4 core handles USB stack processing and HID/CDC/CCID class protocols without DMA bottlenecks. Placed as the main MCU with 22 ohm series resistors on DP/DM lines and a 1uF VBUS decoupling capacitor, the device delivers a production-ready USB device solution for card readers, barcode scanners, and HID peripherals.

🏭

Industrial HMI and Control Panels

The ATSAM4SD16CA-ANR fits industrial HMI applications through its 120 MHz Cortex-M4 with FPU, 160KB SRAM for graphics framebuffer, and 12-bit ADC for touch-screen and analog sensing. The dual-bank Flash enables secure firmware updates in the field without halting operation - critical for industrial panels that cannot tolerate downtime. With DMA channels supporting TFT LCD data transfer and timers for backlight PWM, the device drives QVGA/WQVGA displays and manages UART-based PLC comms. Industrial temperature grade (-40C to +85C) and 1.62V-3.6V operation support 24V industrial bus systems with appropriate front-end regulation.

⚡

Motor Control and BLDC Drives

The ATSAM4SD16CA-ANR's Cortex-M4 with hardware FPU executes field-oriented control (FOC) loops for BLDC and PMSM motors in real time at the 120 MHz clock rate. The TC (Timer Counter) modules generate 3-phase complementary PWM with dead-time insertion for inverter bridges, while the 12-bit ADC samples phase currents synchronously to PWM edges via hardware triggering. The 160KB SRAM holds full state-space observer variables and PI controller coefficients without external memory. With 1MB Flash, complete motor libraries and CANopen/Modbus stacks fit on-chip, simplifying BOM and improving reliability.

🌐

Building Automation Gateways

The ATSAM4SD16CA-ANR serves as a building-automation gateway MCU due to its rich peripheral mix: multiple USARTs for RS-485 Modbus trunks, TWI for I2C sensors, SPI for LoRa/WiFi modules, and USB for commissioning. The 160KB SRAM buffers data from multiple sensor buses before forwarding via Ethernet or cellular modules. The Cortex-M4 FPU accelerates AES encryption for secure MQTT/HTTPS communication with cloud backends. Industrial temperature rating and 1.62V-3.6V range suit DIN-rail enclosures powered by 24V industrial supplies.

📊

Portable Data Acquisition Systems

The ATSAM4SD16CA-ANR's low 1.62V minimum supply and efficient Cortex-M4 core support battery-powered data loggers for portable measurement. The 12-bit ADC samples up to 1 MSPS with DMA burst transfer into SRAM, enabling continuous logging of vibration, strain-gauge, or biomedical signals. The 1MB Flash stores days of compressed data without external memory, while USB powers and recharges the system when docked. Industrial temperature range and robust LQFP-100 package suit handheld test equipment used in field service environments.

💳

Smart Card and Secure Token Readers

The ATSAM4SD16CA-ANR supports smart-card reader designs through its USART configurable for ISO 7816 T=0/T=1 protocols, integrated USB for host connectivity, and DMA channels for high-speed card data transfer. The 160KB SRAM handles secure protocol buffers, while the 1MB Flash stores firmware-update images plus crypto libraries. Hardware single-cycle MAC instructions accelerate AES and DES operations needed for payment terminal security. The Cortex-M4 MPU enforces memory isolation between application and crypto firmware regions for PCI-PTS compliance.

What is the operating voltage of ATSAM4SD16CA-ANR?
The ATSAM4SD16CA-ANR operates from 1.62 V to 3.6 V on its VDDIN pins, supporting both 1.8 V and 3.3 V typical rails. According to the SAM4S datasheet (Atmel-11100), a 3.3 V supply is the common configuration for USB operation because the USB transceiver requires at least 3.0 V to meet USB 2.0 signaling levels. Always include a 100 nF decoupling capacitor per VDD pin and a 4.7 uF bulk capacitor at the regulator output.
How much Flash and SRAM does ATSAM4SD16CA-ANR have?
The ATSAM4SD16CA-ANR integrates 1 MB (1024 KB) of dual-bank Flash and 160 KB of SRAM. The dual-bank Flash architecture allows in-application programming (IAP) - one bank can execute code while the other is being erased or reprogrammed. The 160 KB SRAM is split into 128 KB of general-purpose SRAM plus 32 KB tightly-coupled SRAM for low-latency CPU access during DSP routines.
Where to buy ATSAM4SD16CA-ANR online?
The ATSAM4SD16CA-ANR is in stock at major distributors including DigiKey (part number ATSAM4SD16CA-ANR-ND), Mouser, and Octopart-listed resellers as of 2026-09-21. Authorized Microchip distributors typically offer 1-piece reels of 100 units. For prototype quantities under 100 pieces, DigiKey and Mouser offer the fastest lead times; for production volumes above 1,000 pieces, contact Microchip direct or approved franchise distributors.
What is the price of ATSAM4SD16CA-ANR?
The ATSAM4SD16CA-ANR is priced at approximately 11.20 USD per unit at qty 1 as of 2026-09-21, with price breaks reducing to around 6.72 USD per unit at qty 1000. Octopart lists live distributor pricing from multiple sources, allowing buyers to compare broker, authorized, and franchise quotes. Note that pricing for tape-and-reel quantities is typically per full reel of 1000 pieces.
What is the lead time for ATSAM4SD16CA-ANR?
Factory lead time for the ATSAM4SD16CA-ANR is typically 12-16 weeks from Microchip as of 2026-09-21, although distributor stock at DigiKey is usually available for immediate shipment of small quantities. Microchip's product page recommends using Revision B silicon for new designs, which may have shorter lead times. For high-volume production orders, place orders at least 6 months in advance to avoid allocation.
Is ATSAM4SD16CA-ANR in stock?
Yes, the ATSAM4SD16CA-ANR is currently listed as in stock at DigiKey and several other authorized distributors as of 2026-09-21. Live inventory and pricing can be checked on Octopart, which aggregates availability across multiple distributors. For larger volumes above 1000 pieces, contact Microchip or an authorized distributor directly to confirm allocation and lead time.
What is the difference between ATSAM4SD16CA-ANR and ATSAM4SD16CA-AUR?
The ATSAM4SD16CA-ANR and ATSAM4SD16CA-AUR differ only in packaging orientation: the -ANR suffix denotes Tape & Reel (T/R) packaging, while -AUR denotes the same die in Tray packaging. Both parts share identical silicon, electrical specifications, and the same 100-pin LQFP footprint. Choosing between them is purely a manufacturing decision - pick -AUR for low-volume prototype builds, -ANR for high-volume SMT assembly lines.
ATSAM4SD16CA-ANR vs ATSAM4E16CA-AUR - which is better for motor control?
For motor-control applications, the ATSAM4E16CA-AUR is generally the better choice because the SAM4E family includes a high-performance 3-phase PWM timer (PWMC) and a Cortex-M4 core with FPU running up to 120 MHz. The ATSAM4SD16CA-ANR uses the SAM4S core without dedicated 3-phase PWM, requiring the standard timer counter (TC) modules to generate PWM signals. For FOC and field-weakening algorithms, the SAM4E's hardware floating-point unit delivers superior performance.
When should I choose ATSAM4SD16CA-ANR over ATSAM4S16CA-AU?
Choose the ATSAM4SD16CA-ANR when your application needs 1 MB of Flash for large firmware images, USB connectivity (the SAM4S SD16 specifically includes the USB 2.0 Full-Speed Device port), or extensive SRAM (160 KB vs 128 KB). Choose the ATSAM4S16CA-AU if your firmware is smaller (under 512 KB) and you don't need USB - the SAM4S16 base part is more cost-effective. Both share the same 100-pin LQFP package, so PCB layout is identical.
What is the best drop-in replacement for ATSAM4SD16CA-ANR?
The best drop-in replacement for the ATSAM4SD16CA-ANR is the ATSAM4SD16CA-AUR (same die, Tray packaging instead of Tape & Reel) or the ATSAM4SD16CA-CU (industrial temperature grade, Tray). All variants share the same 100-pin LQFP footprint, identical 1 MB Flash, 160 KB SRAM, and USB 2.0 Full-Speed Device port, allowing direct PCB-level substitution without firmware changes. The -ANR, -AUR, and -CU suffixes differ only in packaging format or temperature grade.
Where to download ATSAM4SD16CA-ANR datasheet PDF?
The ATSAM4SD16CA-ANR datasheet PDF can be downloaded directly from Microchip's official product page at https://www.microchip.com/en-us/product/ATSAM4SD16C. The datasheet document covers the SAM4S series including the SAM4SD16 variant, with full electrical characteristics, pinout, peripheral descriptions, and timing diagrams. As of 2026-09-21, the active datasheet is Atmel-11100 (SAM4S family datasheet). Always download the latest revision and check errata before starting a new design.
Where to find ATSAM4SD16CA-ANR pinout?
The ATSAM4SD16CA-ANR pinout for the 100-pin LQFP package is documented in section 9 of the SAM4S datasheet (Atmel-11100), available at https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-11100-32-bit%20Cortex-M4-Microcontroller-SAM4S_Datasheet.pdf. The pin diagram lists each GPIO, power, and peripheral-function assignment including the USB DP/DM pins, JTAG/SWD debug pins, and the exposed thermal pad (pin 101 on the underside). Pin 1 is located by the dot marker on the top of the package.
Can ATSAM4SD16BB-MN replace ATSAM4SD16CA-ANR?
No, the ATSAM4SD16BB-MN is NOT a drop-in replacement for the ATSAM4SD16CA-ANR because it uses a different package - the ATSAM4SD16BB-MN is housed in a QFN-style BGA package, while the ATSAM4SD16CA-ANR uses a 100-pin LQFP. While both share the SAM4SD16 silicon family (1 MB Flash, 160 KB SRAM), the pinout differs significantly and requires PCB redesign. For drop-in replacement, choose ATSAM4SD16CA-AUR or ATSAM4SD16CA-CU instead, which share the same 100-pin LQFP footprint.
What is the best STM32 equivalent for ATSAM4SD16CA-ANR?
The closest STM32 equivalents for the ATSAM4SD16CA-ANR are the STM32F407VG or STM32F405RG, both featuring Cortex-M4 with FPU at 168 MHz and approximately 1 MB Flash. However, neither is a true drop-in replacement because the LQFP-100 pinout differs from the SAM4S layout - peripheral functions are mapped to different physical pins, requiring PCB rework and firmware porting. For a Microchip-to-Microchip cross, prefer ATSAM4SD16CA-AUR as it is pin-compatible and firmware-compatible.
What are the key specifications of ATSAM4SD16CA-ANR that engineers should know?
The ATSAM4SD16CA-ANR features an ARM Cortex-M4 core with FPU at 120 MHz, 1 MB dual-bank Flash, 160 KB SRAM, USB 2.0 Full-Speed Device, up to 16 DMA channels, a 12-bit ADC and DAC, and operates from 1.62V to 3.6V. According to the SAM4S datasheet (Atmel-11100), the device delivers 1.25 DMIPS/MHz with hardware single-cycle MAC instructions for DSP workloads. The 100-pin LQFP package and industrial temperature grade make it suitable for embedded industrial, USB peripheral, and consumer applications.

Справочные инженерные данные для ATSAM4SD16CA-ANR — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the ATSAM4SD16CA-ANR when your design requires 1 MB of dual-bank Flash, integrated USB 2.0 Full-Speed Device, 160 KB SRAM, and a Cortex-M4 with FPU running at 120 MHz, packaged in a 100-pin LQFP for SMT assembly. Pick the ATSAM4SD16CA-AUR (or -CU, -AN) instead if you need the same silicon but in Tray packaging rather than Tape & Reel for prototype builds. Choose the ATSAM4S16CA-AU when 512 KB of Flash is sufficient and you want the lowest-cost variant of the SAM4S LQFP-100 family. Choose the ATSAM4SA16CA-AUR when you do not need USB but still want 1 MB Flash and 160 KB SRAM. For non-Microchip replacements, the closest STM32 equivalents (STM32F407VG, STM32F405RG) require PCB redesign because the LQFP-100 pinout differs - prefer the Microchip-to-Microchip cross for minimal migration effort.

Сравнение с аналогами

Параметр Этот товар ATSAM4SD16CA-AUR ATSAM4SD16CA-CU ATSAM4SD16CA-AN ATSAM4S16CA-AU ATSAM4SA16CA-AUR
Package LQFP-100 LQFP-100 (same) LQFP-100 (same) LQFP-100 (same) LQFP-100 (same) LQFP-100 (same)
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Flash Memory 1 MB 1 MB 1 MB 1 MB 512 KB (-50%) 1 MB
SRAM 160 KB 160 KB 160 KB 160 KB 128 KB 160 KB
CPU Clock 120 MHz 120 MHz 120 MHz 120 MHz 120 MHz 120 MHz
USB 2.0 Full-Speed Yes (embedded transceiver) Yes Yes Yes Yes No
Packaging Tape & Reel Tray Tray Tray Tray Tray
Temperature Grade Industrial Industrial Industrial Industrial Industrial Industrial

Ключевые отличия

  • Integrated USB 2.0 Full-Speed Device transceiver (против ATSAM4SA16CA-AUR)
  • Dual-bank Flash architecture (против ATSAM4S16CA-AU)
  • Same die across multiple packaging options (против ATSAM4S16CA-AU)

Заметки по проектированию

The ATSAM4SD16CA-ANR integrates a 1.2V core voltage regulator powered by VDDIN (1.62V-3.6V). Place a 4.7uF bulk capacitor on VDDIN and a 1uF ceramic on VDDCORE. For USB applications, VDDUTMI must be supplied from the same 3.3V rail with a separate 100nF decoupling capacitor. Verify the regulator output voltage on VDDCORE during design validation - undersized decoupling causes core instability and USB enumeration failures.

Route the 50 MHz external crystal traces on the XIN/XOUT pins with symmetric length matching and a ground guard ring. Place the load capacitors (typically 12-22pF depending on crystal ESR) as close to the oscillator pins as possible. Keep the USB DP/DM traces impedance-controlled to 90 ohms differential per USB 2.0 specification. Maintain a continuous ground plane under the LQFP-100 thermal pad for thermal dissipation and electrical reference.

A common pitfall is failing to connect the NRST pin to a proper reset circuit - leaving NRST floating leads to intermittent reset behavior during power-up. Use a 10 kohm pull-up to VDDIO and a 100nF capacitor to ground. The ERASE pin (pin 95) must be pulled low or left NC - driving it high forces a full Flash erase and lockout of the device until next reset. For JTAG/SWD debugging, ensure the SWD pins are accessible via test points for production programming.

Информация о соответствии

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Qualified
Без свинца
Yes
Без галогенов
Yes
Конфликтные минералы
Compliant

Industrial temperature grade (-40C to +85C). Compliant with RoHS Directive 2011/65/EU and REACH SVHC requirements per Microchip product declaration. Not AEC-Q100 qualified - for automotive applications, contact Microchip for AEC-Q100 qualified SAM4S variants.

Данные проверены: 2026-09-21 — данные проверены и курируются командой компонентной инженерии XAIPART

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Microchip Technology Atmel ATSAM4SD16CA-ANR ATSAM4SD16CA-AUR ATSAM4SD16CA-AN ATSAM4S16CA-AU ATSAM4SA16CA-AUR ARM Cortex-M4 FPU RISC LQFP-100 LQFP surface mount USB 2.0 Full-Speed DMA 12-bit ADC 12-bit DAC dual-bank Flash RoHS REACH industrial temperature grade embedded microcontroller 32-bit MCU DSP JTAG SWD
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