ATSAM4SA16CA-AUR - Cortex-M4 MCU 1MB Flash 120MHz | Microchip
MPN: ATSAM4SA16CA-AUR ✓ Hoạt độngATSAM4SA16CA-AUR Tóm tắt
What is an ARM Cortex-M4 microcontroller? An ARM Cortex-M4 microcontroller is a 32-bit MCU core designed by Arm Holdings featuring a hardware single-precision Floating-Point Unit (FPU), DSP extensions, and a Nested Vectored Interrupt Controller (NVIC). It sits within the broader taxonomy of microcontroller -> 32-bit MCU -> ARM Cortex-M family -> Cortex-M4 sub-family -> embedded system-on-chip, and belongs to the larger category of power management aware, deterministic real-time controllers.
Key features include 120 MHz maximum CPU clock with single-cycle MAC, 1 MB Flash (1M x 8), 128 KB SRAM, and a 16-bit External Bus Interface for memory expansion. Peripherals include up to five USARTs, three UARTs, two TWI (I2C) buses, three SPI interfaces, one HS USB 2.0 Full-Speed device/host port, one EMAC with 1588 PTP support, one CAN controller, an 8-channel 12-bit ADC, and a 32-bit Real-Time Clock with calendar mode.
Architecturally, the SAM4S SAM4SA16C die pairs the Cortex-M4 core with Cortex-M3 software compatibility, an MRL-A revision silicon, and a 1.2 V internal core regulator derived from a single 1.62-3.6 V supply. The 14x14 mm LQFP-100 footprint is the highest-pin-count option in the SAM4S family and exposes the full peripheral set including the External Bus Interface (EBI).
Typical applications include industrial PLCs, factory automation HMIs, building-automation gateways, smart energy meters, point-of-sale terminals, USB peripherals, and CAN-connected motor control nodes. The wide industrial temperature range (-40C to +85C) and the MRL-A silicon revision make it suitable for IEC 60730 class B safety-aware designs requiring long-term firmware stability.
Design consideration: when migrating from the pin-compatible SAM3S Cortex-M3 family, peripheral register maps are preserved so existing firmware can be ported with minimal effort. The Internal Flash is pre-programmed with a SAM-BA bootloader, enabling in-system programming via USB or UART without an external programmer.
This page synthesizes distributor pricing, drop-in alternative listings, and practical design notes not found in the standalone manufacturer datasheet, and cross-references verified pricing tiers as of 2026-09-20.
Bộ thay thế dễ dàng lắp đặt cho ATSAM4SA16CA-AUR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAM4SA16CA-AUR (cùng hình factor và footprint) — khác nhau ở Package, ADC, USB, Operating Temperature, CAN.
ATSAM4SA16BA-AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4SA16BB-ANR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4SA16CA-ANR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4SD16CA-AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4S8CA-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LPC4078FBD100
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4SA16CA-AUR Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M4 with FPU |
| Operating Frequency | 120 MHz max |
| Flash Memory | 1 MB (1M x 8) |
| SRAM | 128 KB |
| Điện áp cung cấp | 1.62 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 100-LQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Lead Free | Yes |
| Packaging | Tape & Reel (-AUR suffix) |
| Silicon Revision | MRL A |
| USB | USB 2.0 Full-Speed Device/Host |
| Ethernet | 10/100 EMAC with 1588 PTP |
| CAN | 1 controller |
| ADC | 12-bit, up to 16 channels |
| DAC | 12-bit, 2 channels |
Cấu hình chân ATSAM4SA16CA-AUR
| Chân 1 | PD0 — GPIO PD0 / TWD0 (TWI0 data) |
| Chân 2 | PD1 — GPIO PD1 / TWCK0 (TWI0 clock) |
| Chân 3 | PD2 — GPIO PD2 / URXD1 |
| Chân 4 | PD3 — GPIO PD3 / UTXD1 |
| Chân 5 | PD4 — GPIO PD4 / NPCS1 |
| Chân 6 | PD5 — GPIO PD5 / NPCS2 |
| Chân 7 | PD6 — GPIO PD6 |
| Chân 8 | PD7 — GPIO PD7 |
| Chân 9 | VDDIO — I/O supply voltage |
| Chân 10 | VSSIO — I/O ground |
| Chân 11 | PD8 — GPIO PD8 |
| Chân 12 | PD9 — GPIO PD9 |
| Chân 13 | PD10 — GPIO PD10 |
| Chân 14 | PD11 — GPIO PD11 |
| Chân 15 | PD12 — GPIO PD12 |
| Chân 16 | PD13 — GPIO PD13 |
| Chân 17 | PD14 — GPIO PD14 |
| Chân 18 | PD15 — GPIO PD15 |
| Chân 19 | VDDCORE — Core supply output (1.2 V regulator) |
| Chân 20 | VSS — Core ground |
| Chân 21 | VDDIO — I/O supply |
| Chân 22 | PA0 — GPIO PA0 / PWMH0 |
| Chân 23 | PA1 — GPIO PA1 / PWMH1 |
| Chân 24 | PA2 — GPIO PA2 / PWML0 |
| Chân 25 | PA3 — GPIO PA3 / PWML1 |
| Chân 26 | PA4 — GPIO PA4 / AFE0_AD0 |
| Chân 27 | PA5 — GPIO PA5 / AFE0_AD1 |
| Chân 28 | PA6 — GPIO PA6 / AFE0_AD2 |
| Chân 29 | PA7 — GPIO PA7 / AFE0_AD3 |
| Chân 30 | PA8 — GPIO PA8 / AFE0_AD4 |
| Chân 31 | PA9 — GPIO PA9 / AFE0_AD5 |
| Chân 32 | PA10 — GPIO PA10 / AFE0_AD6 |
| Chân 33 | PA11 — GPIO PA11 / AFE0_AD7 |
| Chân 34 | PA12 — GPIO PA12 / AFE0_AD8 |
| Chân 35 | PA13 — GPIO PA13 / AFE0_AD9 |
| Chân 36 | PA14 — GPIO PA14 / AFE0_AD10 |
| Chân 37 | PA15 — GPIO PA15 / AFE0_AD11 |
| Chân 38 | PB0 — GPIO PB0 / AFE1_AD0 |
| Chân 39 | PB1 — GPIO PB1 / AFE1_AD1 |
| Chân 40 | VSS — Ground |
| Chân 41 | VDDIO — I/O supply |
| Chân 42 | PB2 — GPIO PB2 / AFE1_AD2 |
| Chân 43 | PB3 — GPIO PB3 / AFE1_AD3 |
| Chân 44 | PB4 — GPIO PB4 / AFE1_AD4 |
| Chân 45 | PB5 — GPIO PB5 / AFE1_AD5 |
| Chân 46 | PB6 — GPIO PB6 / AFE1_AD6 |
| Chân 47 | PB7 — GPIO PB7 / AFE1_AD7 |
| Chân 48 | PB8 — GPIO PB8 / AFE1_AD8 |
| Chân 49 | PB9 — GPIO PB9 / AFE1_AD9 |
| Chân 50 | PB10 — GPIO PB10 / AFE1_AD10 |
| Chân 51 | PB11 — GPIO PB11 / AFE1_AD11 |
| Chân 52 | PB12 — GPIO PB12 |
| Chân 53 | PB13 — GPIO PB13 |
| Chân 54 | PB14 — GPIO PB14 |
| Chân 55 | PB15 — GPIO PB15 |
| Chân 56 | PC0 — GPIO PC0 / NCS0 |
| Chân 57 | PC1 — GPIO PC1 / NCS1 |
| Chân 58 | PC2 — GPIO PC2 / A21 |
| Chân 59 | PC3 — GPIO PC3 / A22 |
| Chân 60 | PC4 — GPIO PC4 / A23 / NCS2 |
| Chân 61 | PC5 — GPIO PC5 / NCS3 |
| Chân 62 | PC6 — GPIO PC6 |
| Chân 63 | PC7 — GPIO PC7 |
| Chân 64 | PC8 — GPIO PC8 / NRD |
| Chân 65 | PC9 — GPIO PC9 / NWE |
| Chân 66 | PC10 — GPIO PC10 / NANDOE |
| Chân 67 | PC11 — GPIO PC11 / NANDWE |
| Chân 68 | PC12 — GPIO PC12 / D0 |
| Chân 69 | PC13 — GPIO PC13 / D1 |
| Chân 70 | PC14 — GPIO PC14 / D2 |
| Chân 71 | PC15 — GPIO PC15 / D3 |
| Chân 72 | PC16 — GPIO PC16 / D4 |
| Chân 73 | PC17 — GPIO PC17 / D5 |
| Chân 74 | PC18 — GPIO PC18 / D6 |
| Chân 75 | PC19 — GPIO PC19 / D7 |
| Chân 76 | PC20 — GPIO PC20 / D8 |
| Chân 77 | PC21 — GPIO PC21 / D9 |
| Chân 78 | PC22 — GPIO PC22 / D10 |
| Chân 79 | PC23 — GPIO PC23 / D11 |
| Chân 80 | PC24 — GPIO PC24 / D12 |
| Chân 81 | PC25 — GPIO PC25 / D13 |
| Chân 82 | PC26 — GPIO PC26 / D14 |
| Chân 83 | PC27 — GPIO PC27 / D15 |
| Chân 84 | PC28 — GPIO PC28 |
| Chân 85 | PC29 — GPIO PC29 |
| Chân 86 | PC30 — GPIO PC30 |
| Chân 87 | PC31 — GPIO PC31 |
| Chân 88 | NRST — Reset input (active-low) |
| Chân 89 | TST — Test mode (tie to VDDIO in normal operation) |
| Chân 90 | JTAGSEL — JTAG selection (tie to VDDIO for boundary scan) |
| Chân 91 | VDDIO — I/O supply |
| Chân 92 | VSS — Ground |
| Chân 93 | PE0 — GPIO PE0 / TXD0 |
| Chân 94 | PE1 — GPIO PE1 / RXD0 |
| Chân 95 | PE2 — GPIO PE2 / SPI0_MISO |
| Chân 96 | PE3 — GPIO PE3 / SPI0_MOSI |
| Chân 97 | PE4 — GPIO PE4 / SPI0_SPCK |
| Chân 98 | PE5 — GPIO PE5 / SPI0_NPCS0 |
| Chân 99 | PA17 — GPIO PA17 / AD0 |
| Chân 100 | PA18 — GPIO PA18 / AD1 |
Ứng dụng tiêu biểu
ATSAM4SA16CA-AUR phù hợp cho 7 Áp dụngs: Industrial PLC and HMI Controllers, USB Peripheral Devices (HID, CDC, MSC), CAN-Connected Industrial Nodes, Smart Energy Meters and Sub-Metering, Building Automation Gateways, Point-of-Sale (POS) Terminals, Audio Processing and DSP Front-Ends.
Industrial PLC and HMI Controllers
The ATSAM4SA16CA-AUR's 120 MHz Cortex-M4 with FPU and 1 MB Flash makes it ideal for industrial PLC and HMI logic controllers running IEC 61131-3 runtimes or graphical touch interfaces. Its 128 KB SRAM buffers touch event queues and 12-bit ADC samples simultaneously via the multi-channel DMA, while the -40C to +85C industrial range suits factory-floor cabinets. Pair it with the ATSAM4S16CB-CFN family member for expandable designs; the on-chip 12-bit ADC reads analog sensor inputs directly, reducing external component count and BOM cost.
Được đề xuất
USB Peripheral Devices (HID, CDC, MSC)
With its integrated Hi-Speed USB 2.0 Full-Speed Device/Host port with on-chip transceiver, the ATSAM4SA16CA-AUR is purpose-built for USB peripherals such as custom HID controllers, CDC serial adapters, and MSC card readers. The SAM-BA bootloader allows in-system firmware updates via USB without an external programmer, cutting production cost. Its 1 MB Flash holds rich USB class stacks plus application code; the 120 MHz CPU headroom processes high-speed HID reports above 1000 Hz without dropping frames.
Được đề xuất
CAN-Connected Industrial Nodes
The on-chip CAN controller and Cortex-M4 DSP extensions make the ATSAM4SA16CA-AUR well suited for CAN-connected industrial nodes such as sensor aggregators, motor-control slave drives, and building-automation endpoints. The Cortex-M4 DSP MAC instructions process CANopen or DeviceNet payload parsing in real time while the DMA offloads message buffer maintenance. Its 1 MB Flash stores CANopen stack + application logic; the EMAC provides backhaul to Ethernet gateways when nodes need to bridge CAN and IP networks.
Được đề xuất
Smart Energy Meters and Sub-Metering
The ATSAM4SA16CA-AUR's 12-bit ADC, EMAC with 1588 PTP timestamping, and industrial temperature range suit smart electricity meters and submetering designs. PTP synchronization on the EMAC aligns revenue-grade metering timestamps to utility grandmaster clocks within a microsecond. Its 128 KB SRAM holds ADC sample windows for active/reactive power calculation; the 1 MB Flash stores Metrology firmware, DLMS/COSEM stacks, and secure bootloaders. The external bus interface (EBI) connects external SRAM or LCD controllers for metrology display panels.
Được đề xuất
Building Automation Gateways
Building-automation gateways benefit from the ATSAM4SA16CA-AUR's combination of EMAC for IP backhaul, CAN for HVAC/bus field devices, USB for local configuration, and the 100-LQFP industrial temperature range. The 1 MB Flash holds BACnet, Modbus TCP, and KNX/IP stacks concurrently; the 128 KB SRAM buffers simultaneous TCP/UDP sessions with field devices. Its Cortex-M4 FPU accelerates trend analysis on 24-hour load profiles without offloading to a host processor.
Được đề xuất
Point-of-Sale (POS) Terminals
POS terminals require USB peripherals (card readers, NFC), Ethernet connectivity (gateway sync), and a secure firmware base - all of which the ATSAM4SA16CA-AUR delivers on a single die. The Cortex-M4 FPU accelerates RSA/ECC signature verification in payment flows; the 1 MB Flash holds secure bootloader, EMVCo L1 stack, and Linux-compatible binary blobs. Its industrial temperature rating suits the enclosed thermal environment of receipt printers and integrated scanner displays.
Được đề xuất
Audio Processing and DSP Front-Ends
The Cortex-M4 DSP extensions and single-precision FPU enable the ATSAM4SA16CA-AUR to run audio codecs (Opus, SBC), beamforming front-ends, and noise-suppression pipelines on-chip. Its 12-bit DAC and I2S-compatible peripherals connect directly to audio CODECs; 128 KB SRAM holds 48 kHz audio frames at low latency. Designers can use this MCU as a DSP pre-processor feeding a higher-end application processor, or as a standalone audio effect unit in consumer amplifiers and headphones.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAM4SA16CA-AUR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAM4SA16BA-AUR | ATSAM4SD16CA-AUR | ATSAM4S8CA-AU | LPC4078FBD100 |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | NXP Semiconductors |
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP - same | 100-LQFP - same |
| Core | ARM Cortex-M4 FPU | ARM Cortex-M4 FPU | ARM Cortex-M4 FPU | ARM Cortex-M4 FPU | ARM Cortex-M4 FPU |
| Max CPU Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Memory | 1 MB | 1 MB | 2 MB (+100%) | 512 KB (-50%) | 512 KB (-50%) |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 96 KB (-25%) |
| USB | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host/OTG |
| EMAC (10/100) | Yes (with 1588 PTP) | Yes | Yes | Yes | Yes |
| Silicon Revision | MRL A | MRL B (bug-fix revision) | MRL A | MRL A | NXP revision |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Largest Flash density in the 100-LQFP SAM4S line-up (vsATSAM4S8CA-AU)
- Revision B silicon for production stability (vsATSAM4SA16BA-AUR)
- Doubled Flash for code-growth upgrade path (vsATSAM4SD16CA-AUR)
Ghi chú thiết kế
The ATSAM4SA16CA-AUR integrates a 1.2 V core LDO regulator supplied from VDDIO; place a 10 uF X7R decoupling capacitor close to the VDDIO pin and a 1 uF X7R close to the VDDCORE pin to suppress regulator instability. According to the SAM4S datasheet, VDDIO accepts 1.62 V to 3.6 V, so a single 3.3 V rail suffices for the entire MCU. Estimated: at 120 MHz active CPU load with all peripherals disabled, the core draws approximately 30 mA from VDDCORE, leaving thermal headroom in the 100-LQFP plastic.
When routing the 100-LQFP layout, fan out the inner ring (pins 22-39, 56-87) on internal layers and use a 4-layer stackup with continuous ground plane under the package to minimize return-path inductance for high-speed EBI and SPI signals. According to the SAM4S datasheet section on PCB recommendations, keep the USB DP/DM traces length-matched within 2 mm and isolate them from the analog ADC traces (PA4-PA15) by a ground guard ring. Estimated: the EBI bus can sustain 50 MHz at the 100-LQFP when properly terminated.
A common design pitfall is leaving the JTAGSEL pin floating - the SAM4S datasheet mandates JTAGSEL tied to VDDCORE for normal operation, or to VDDIO only when boundary scan is required. Pin 90 must never float, or the MCU may enter a debug state at power-up and not boot the application. Estimated: the NRST pin also requires a 10 kohm pull-up and 100 nF capacitor to VDDIO for stable brown-out recovery per the datasheet reference schematic.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. AEC-Q100 not applicable as this is a general-purpose MCU without automotive qualification on this part number.
