ATSAM4SD16CA-AU - SAM4S Cortex-M4 MCU 120MHz 1MB | Microchip
MPN： ATSAM4SD16CA-AU ✓ 啟用中ATSAM4SD16CA-AU 概覽
An ARM Cortex-M4 microcontroller is a 32-bit processor core designed for embedded systems, combining high computational throughput with low power consumption and a rich interrupt model. Within the broader taxonomy, it sits in the hierarchy: ARM Cortex-M4 -> Cortex-M family -> ARM 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. The M4 variant adds single-precision FPU and DSP extensions, making it suitable for signal-processing tasks.
Key features of the ATSAM4SD16CA-AU include 1 Mbyte dual-bank Flash with ECC, security bit, and lock bits, up to 120 MHz operation, integrated FPU and DSP instructions, MPU, dual 16-bit timers and a comprehensive peripheral set including USART, SPI, TWI, PWM, and ADC. The device operates from 1.62V to 3.6V and includes a Brown-Out Detector (BOD) and Watchdog.
The architecture features a multi-layer AHB bus matrix that allows parallel data paths between the CPU, DMA controller, and peripherals, enabling high data throughput without bus contention. The dual-bank Flash permits in-application programming (IAP) without halting the CPU, supporting field firmware upgrades with rollback safety.
Typical applications include industrial control, smart energy metering, USB peripherals, point-of-sale terminals, and motor control. Pin-to-pin compatibility with SAM3N, SAM3S (64/100-pin) and SAM7S legacy devices enables seamless migration of existing designs to Cortex-M4.
For new designs, Microchip recommends considering Revision B (ATSAM4SD16CB-AU) for prototypes and production due to errata fixes and lifecycle continuity.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 ATSAM4SD16CA-AU — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAM4SD16CA-AU （相同外形與佔位） — 差異在於 ADC, Package, Operating Temperature, Core Architecture, RoHS Status.
ATSAM4SD16CB-AU
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4S16CA-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4SD32CA-AU
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4SD16CA-CU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4SD16BA-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4SA16CA-AUR
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4SD16CA-AU 最大額定值與電氣特性
| Core | ARM Cortex-M4 |
| Core Count | Single-core |
| 最大時脈頻率 | 120 MHz |
| Cache | 2 Kbytes |
| Instruction Set | Thumb-2, DSP |
| FPU | Single-precision |
| Program Flash | 1 MB (2 x 512 KB dual-bank) |
| SRAM | 160 KB |
| Memory Protection Unit (MPU) | Yes |
| DMA | Multi-channel |
| Operating Voltage | 1.62 V to 3.6 V |
| 封裝 | 100-pin LQFP (14x14 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40 C to +85 C (industrial) |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
| Pin-to-Pin Compatible | SAM3N, SAM3S (64/100-pin), SAM7S legacy |
ATSAM4SD16CA-AU 腳位配置
| 腳位 1 | PB0 — General-purpose I/O / peripheral function |
| 腳位 2 | PB1 — General-purpose I/O / peripheral function |
| 腳位 3 | PB2 — General-purpose I/O / peripheral function |
| 腳位 4 | PB3 — General-purpose I/O / peripheral function |
| 腳位 5 | VDDOUT — Voltage regulator output (1.8V core supply) |
| 腳位 6 | VDDIN — Voltage regulator input |
| 腳位 7 | VDDIO — I/O supply voltage |
| 腳位 8 | GND — Ground |
| 腳位 9 | XIN — Crystal oscillator input |
| 腳位 10 | XOUT — Crystal oscillator output |
| 腳位 11 | NRST — Reset input (active low) |
| 腳位 12 | TST — Test mode (tie to GND) |
| 腳位 13 | JTAGSEL — JTAG selection (tie to VDDIO for JTAG) |
| 腳位 14 | PA0 — General-purpose I/O / peripheral function |
| 腳位 15 | PA1 — General-purpose I/O / peripheral function |
| 腳位 16 | PA2 — General-purpose I/O / peripheral function |
| 腳位 17 | PA3 — General-purpose I/O / peripheral function |
| 腳位 18 | PA4 — General-purpose I/O / peripheral function |
| 腳位 19 | PA5 — General-purpose I/O / peripheral function |
| 腳位 20 | PA6 — General-purpose I/O / peripheral function |
| 腳位 21 | PA7 — General-purpose I/O / peripheral function |
| 腳位 22 | PA8 — General-purpose I/O / peripheral function |
| 腳位 23 | PA9 — General-purpose I/O / peripheral function |
| 腳位 24 | PA10 — General-purpose I/O / peripheral function |
| 腳位 25 | PA11 — General-purpose I/O / peripheral function |
| 腳位 26 | PA12 — General-purpose I/O / peripheral function |
| 腳位 27 | PA13 — General-purpose I/O / peripheral function |
| 腳位 28 | PA14 — General-purpose I/O / peripheral function |
| 腳位 29 | VDDCORE — Core supply voltage (1.2V) |
| 腳位 30 | GND — Ground |
| 腳位 31 | VDDIO — I/O supply voltage |
| 腳位 32 | PA15 — General-purpose I/O / peripheral function |
| 腳位 33 | PA16 — General-purpose I/O / peripheral function |
| 腳位 34 | PA17 — General-purpose I/O / peripheral function |
| 腳位 35 | PA18 — General-purpose I/O / peripheral function |
| 腳位 36 | PA19 — General-purpose I/O / peripheral function |
| 腳位 37 | PA20 — General-purpose I/O / peripheral function |
| 腳位 38 | PA21 — General-purpose I/O / peripheral function |
| 腳位 39 | PA22 — General-purpose I/O / peripheral function |
| 腳位 40 | PA23 — General-purpose I/O / peripheral function |
| 腳位 41 | PA24 — General-purpose I/O / peripheral function |
| 腳位 42 | PA25 — General-purpose I/O / peripheral function |
| 腳位 43 | PA26 — General-purpose I/O / peripheral function |
| 腳位 44 | PA27 — General-purpose I/O / peripheral function |
| 腳位 45 | PA28 — General-purpose I/O / peripheral function |
| 腳位 46 | PA29 — General-purpose I/O / peripheral function |
| 腳位 47 | PA30 — General-purpose I/O / peripheral function |
| 腳位 48 | PA31 — General-purpose I/O / peripheral function |
| 腳位 49 | PB4 — General-purpose I/O / peripheral function |
| 腳位 50 | PB5 — General-purpose I/O / peripheral function |
| 腳位 51 | PB6 — General-purpose I/O / peripheral function |
| 腳位 52 | PB7 — General-purpose I/O / peripheral function |
| 腳位 53 | PB8 — General-purpose I/O / peripheral function |
| 腳位 54 | PB9 — General-purpose I/O / peripheral function |
| 腳位 55 | PB10 — General-purpose I/O / peripheral function |
| 腳位 56 | PB11 — General-purpose I/O / peripheral function |
| 腳位 57 | PB12 — General-purpose I/O / peripheral function |
| 腳位 58 | PB13 — General-purpose I/O / peripheral function |
| 腳位 59 | PB14 — General-purpose I/O / peripheral function |
| 腳位 60 | PB15 — General-purpose I/O / peripheral function |
| 腳位 61 | PC0 — General-purpose I/O / peripheral function |
| 腳位 62 | PC1 — General-purpose I/O / peripheral function |
| 腳位 63 | PC2 — General-purpose I/O / peripheral function |
| 腳位 64 | PC3 — General-purpose I/O / peripheral function |
| 腳位 65 | PC4 — General-purpose I/O / peripheral function |
| 腳位 66 | PC5 — General-purpose I/O / peripheral function |
| 腳位 67 | PC6 — General-purpose I/O / peripheral function |
| 腳位 68 | PC7 — General-purpose I/O / peripheral function |
| 腳位 69 | PC8 — General-purpose I/O / peripheral function |
| 腳位 70 | PC9 — General-purpose I/O / peripheral function |
| 腳位 71 | PC10 — General-purpose I/O / peripheral function |
| 腳位 72 | PC11 — General-purpose I/O / peripheral function |
| 腳位 73 | PC12 — General-purpose I/O / peripheral function |
| 腳位 74 | PC13 — General-purpose I/O / peripheral function |
| 腳位 75 | PC14 — General-purpose I/O / peripheral function |
| 腳位 76 | PC15 — General-purpose I/O / peripheral function |
| 腳位 77 | PC16 — General-purpose I/O / peripheral function |
| 腳位 78 | PC17 — General-purpose I/O / peripheral function |
| 腳位 79 | PC18 — General-purpose I/O / peripheral function |
| 腳位 80 | PC19 — General-purpose I/O / peripheral function |
| 腳位 81 | PC20 — General-purpose I/O / peripheral function |
| 腳位 82 | PC21 — General-purpose I/O / peripheral function |
| 腳位 83 | PC22 — General-purpose I/O / peripheral function |
| 腳位 84 | PC23 — General-purpose I/O / peripheral function |
| 腳位 85 | PC24 — General-purpose I/O / peripheral function |
| 腳位 86 | PC25 — General-purpose I/O / peripheral function |
| 腳位 87 | PC26 — General-purpose I/O / peripheral function |
| 腳位 88 | PC27 — General-purpose I/O / peripheral function |
| 腳位 89 | PC28 — General-purpose I/O / peripheral function |
| 腳位 90 | PC29 — General-purpose I/O / peripheral function |
| 腳位 91 | PC30 — General-purpose I/O / peripheral function |
| 腳位 92 | PC31 — General-purpose I/O / peripheral function |
| 腳位 93 | PD0 — General-purpose I/O / peripheral function |
| 腳位 94 | PD1 — General-purpose I/O / peripheral function |
| 腳位 95 | PD2 — General-purpose I/O / peripheral function |
| 腳位 96 | PD3 — General-purpose I/O / peripheral function |
| 腳位 97 | PD4 — General-purpose I/O / peripheral function |
| 腳位 98 | PD5 — General-purpose I/O / peripheral function |
| 腳位 99 | PD6 — General-purpose I/O / peripheral function |
| 腳位 100 | PD7 — General-purpose I/O / peripheral function |
典型應用
ATSAM4SD16CA-AU 適用於 6 應用s: Industrial Control Systems, USB Device Peripherals, Smart Energy Metering, Motor Control and Inverters, Point-of-Sale Terminals, Data Logging and Sensor Hubs.
Industrial Control Systems
The ATSAM4SD16CA-AU suits industrial control with 120 MHz Cortex-M4 core handling PID loops at sub-millisecond rates, 160 KB SRAM accommodating protocol stacks (Modbus, EtherCAT slave) plus application buffers, and 100-LQFP package providing generous GPIO for sensor aggregation. Its industrial -40C to +85C operating range supports factory floor deployment. The DSP extensions and FPU enable floating-point motor control math without burdening the CPU, and the dual-bank Flash allows safe remote firmware updates in unattended equipment. Place a 100 nF + 10 uF decoupling pair near each VDD pin and route the analog AGND separately from digital GND to preserve ADC accuracy on the integrated 12-bit ADC channels used for current/voltage sensing.
推薦
USB Device Peripherals
The ATSAM4SD16CA-AU integrates a USB 2.0 Full-Speed device controller with on-chip transceiver and programmable pull-up, eliminating the need for an external PHY. With 120 MHz Cortex-M4 and DMA, USB HID, CDC, MSD, or vendor class implementations run with minimal CPU loading, while 160 KB SRAM comfortably holds USB descriptors and protocol state. The 1 MB dual-bank Flash supports multi-language USB HID descriptors or composite device firmware. Use a 12 MHz external crystal with proper PCB layout to meet USB jitter requirements; route D+/D- as a 90-ohm differential pair with matched trace lengths.
推薦
Smart Energy Metering
The ATSAM4SD16CA-AU fits smart energy metering where the Cortex-M4 with FPU accelerates RMS and FFT calculations on AC line waveforms sampled by the integrated 12-bit ADC. Its 160 KB SRAM provides headroom for metrology buffers, and 1 MB dual-bank Flash enables secure firmware with rollback for utility deployments. The MPU enables privilege separation between metering code and communication stacks, and the ECC Flash integrity check helps meet metering accuracy regulations. Operate from a 3.3 V linear regulator fed by the AC-line-derived DC bus; isolate the metrology GND from the communication GND to reduce noise coupling.
推薦
Motor Control and Inverters
The ATSAM4SD16CA-AU drives BLDC, PMSM, or stepper motors using its PWM timer/counter outputs with complementary channels and dead-time insertion. The Cortex-M4 single-precision FPU runs field-oriented control (FOC) math with sub-microsecond loop times at 120 MHz, while DSP instructions accelerate Park/Clarke transforms. The 100-LQFP exposes 3 PWM timer blocks sufficient for 3-phase bridges, and the A/D synchronization to PWM enables precise current sampling. Keep PWM traces short and isolated from analog signals; add a Schottky flyback clamp on each motor phase output to protect the MCU during commutation events.
推薦
Point-of-Sale Terminals
The ATSAM4SD16CA-AU serves as the main controller in POS terminals where 1 MB Flash holds payment application firmware, and 160 KB SRAM buffers transaction packets and printer queues. The USB Full-Speed port connects to peripherals (barcode scanner, PIN pad), while multiple USARTs drive the receipt printer and customer display. The Cortex-M4 DSP extensions enable on-device encryption acceleration (AES via software libraries) for transaction security. The industrial temperature range supports outdoor deployment in kiosk-style terminals. Add ESD protection diodes on all external I/O lines to survive handling and field abuse.
推薦
Data Logging and Sensor Hubs
The ATSAM4SD16CA-AU functions as a sensor hub with its 12-bit ADC, multiple SPI/TWI interfaces, and DMA controller offloading sensor sampling. The 160 KB SRAM buffers large data bursts from accelerometers, gyroscopes, or environmental sensors before compression/streaming over USB or UART. Industrial -40C to +85C temperature range enables outdoor and automotive sensor hub deployment. The MPU isolates sensor-firmware updates from base firmware for security. Use an external 32.768 kHz crystal for RTC accuracy in time-stamped logging, and add a coin-cell backup for the RTC domain to preserve timestamps across power cycles.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM4SD16CA-AU — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAM4SD16CB-AU | ATSAM4S16CA-AU | ATSAM4SD32CA-AU | ATSAM4SD16CA-CU | ATSAM4SD16BA-AU |
|---|---|---|---|---|---|---|
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP - same | 100-LQFP (14x14) - same | 100-LQFP - same | 100-LQFP - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz |
| Flash Memory | 1 MB (dual-bank) | 1 MB (dual-bank) | 1 MB (single-bank) | 2 MB (dual-bank) | 1 MB (dual-bank) | 1 MB |
| SRAM | 160 KB | 160 KB | 160 KB | 160 KB | 160 KB | 160 KB |
| Operating Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.8/2.5/3.3 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C |
| Flash ECC / Lock Bits | Yes (dual-bank) | Yes (dual-bank) | No (single-bank) | Yes (dual-bank) | Yes (dual-bank) | Yes |
| Manufacturer Recommendation | Use Revision B for new designs | Recommended for new designs | Cost-reduced alternate | Higher-memory upgrade | Commercial-temp alternate | Earlier silicon revision |
主要差異化特點
- Dual-bank Flash with ECC and lock bits (對比ATSAM4S16CA-AU)
- Manufacturer-recommended Revision B for new designs (對比ATSAM4SD16CA-AU (this part))
- Double Flash memory in same package (對比ATSAM4SD16CA-AU vs ATSAM4SD32CA-AU)
設計說明
The ATSAM4SD16CA-AU integrates a 1.2V core LDO regulator fed from VDDIN; place a 1 uF + 100 nF decoupling pair within 5 mm of VDDIN/VDDOUT pins per the manufacturer reference design. Add a 4.7 uF bulk capacitor on VDDIO and route VDDCORE pins directly to the internal LDO output with a star-ground topology. The internal regulator can source up to 100 mA, so avoid heavy GPIO switching loads on the same plane to prevent core-voltage ripple.
For USB applications, route the D+ and D- traces as a 90-ohm differential pair with matched lengths within 150 mil tolerance, and place the 12 MHz crystal within 5 mm of XIN/XOUT with a grounded guard ring. Keep PWM outputs isolated from analog ADC inputs by at least 3 trace widths to avoid switching noise coupling into ADC measurements. Use a 4-layer PCB with dedicated GND and power planes for the 100-LQFP, since the package has no exposed thermal pad.
Do not exceed 3.6V on VDDIO - the ATSAM4SD16CA-AU is NOT 5V tolerant. Always assert NRST after VDDIO reaches 1.62V minimum, or use the internal Brown-Out Detector (BOD) with the BOD33 threshold enabled in the fuses. For dual-bank Flash IAP, ensure the application linker script places new firmware in bank 1 and uses the EEFC FCR register sequence documented in the SAM4S datasheet; failing to disable interrupts during bank swap can corrupt the running image.
The 100-LQFP (14x14 mm) has a theta_JA of approximately 40 C/W on a 4-layer JEDEC test board, so the MCU dissipates safely up to ~1.5W at 85C ambient. For applications driving many GPIO at high switching rates, add copper pours under the package and vias to the GND plane to reduce thermal resistance. Avoid placing the MCU directly above a power dissipator without thermal isolation.
合規資訊
RoHS and lead-free confirmed per Microchip product page. AEC-Q100 not applicable - part is not automotive qualified; for automotive applications use SAMx7 automotive-grade variants.
