ATSAM4S8CA-AUR - 120MHz Cortex-M4 MCU 512KB Flash LQFP-100 | Microchip
MPN: ATSAM4S8CA-AUR ✓ Hoạt độngATSAM4S8CA-AUR Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one die, enabling compact embedded designs. The Cortex-M4 is an ARMv7-M core family widely used in mixed-signal industrial and IoT systems; LDOs, switching regulators, and power management ICs sit alongside MCUs in the broader semiconductor ecosystem, with the MCU itself classified as a digital integrated circuit. Within Microchip's SAM family, Cortex-M4 variants such as SAM4S, SAM4N, and SAM3S share a pin-to-pin compatible footprint, easing migration.
Key features of the ATSAM4S8CA-AUR include a single-core Cortex-M4 with FPU and DSP extensions, 512 KB Flash (single-bank option) plus 128 KB SRAM, a Multi-bit ECC Flash controller, and a peripheral set that typically spans USART/UART, TWI (I2C), SPI, SSC, USB 2.0 Full-Speed device/host, CAN, a 12-bit ADC, PWM timers, and an External Bus Interface. The device operates from 1.62 V to 3.6 V and integrates an on-chip voltage regulator that simplifies single-rail designs.
Architecturally the part uses an 8-layer AHB/APB matrix, a tightly-coupled SRAM block for deterministic code execution, and an enhanced Flash controller supporting read-while-write for live firmware updates. Power modes draw as little as a few microamps in back-up with RTC running, suitable for battery-aware industrial nodes.
Typical applications include industrial control PLCs, building automation gateways, smart-metering, point-of-sale terminals, low-cost HMI panels, USB peripherals (HID, CDC), and CAN-connected automotive aftermarket modules. For high-end audio DSP or graphics-heavy HMI, designers usually step up to SAM4E/SAM7S with larger memory and dedicated peripherals.
When designing with the ATSAM4S8CA-AUR, route the 32 kHz crystal traces symmetrically and place the four decoupling capacitors as close as possible to each supply pin pair. Use the Atmel/Microchip SAM-BA boot assistant or SWD/JTAG for programming, and always specify the boot mode strap correctly on reset to avoid lockouts.
This page consolidates distributor pricing, drop-in pin-compatible alternatives, and design considerations not found in the manufacturer datasheet, helping engineers evaluate and second-source the part quickly.
Bộ thay thế dễ dàng lắp đặt cho ATSAM4S8CA-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 ATSAM4S8CA-AUR (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, Supply Voltage, RoHS Status.
ATSAM4S8CA-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4S16CA-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4S16CA-AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4S8BA-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4S8BB-UUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F407VGT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4S8CA-AUR Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M4 (32-bit, single-core) |
| Maximum CPU Clock | 120 MHz |
| FPU / DSP | Single-precision FPU and DSP extensions |
| Program Flash | 512 KB (512K x 8) |
| SRAM | 128 KB |
| Điện áp cung cấp | 1.62 V to 3.6 V |
| Hộp | 100-LQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| ADC | 12-bit, multi-channel (per datasheet) |
| Communication | USB 2.0 Full-Speed, CAN, USART, UART, SPI, TWI (I2C), SSC |
| Timers / PWM | Multi-channel 16-bit timers, PWM outputs |
| External Bus Interface | Yes (EBI) |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
| Delivery Form | Tape & Reel |
| Series | SAM4S |
Cấu hình chân ATSAM4S8CA-AUR
| Chân 1 | PA0 — GPIO/Peripheral function |
| Chân 2 | PA1 — GPIO/Peripheral function |
| Chân 3 | PA2 — GPIO/Peripheral function |
| Chân 4 | PA3 — GPIO/Peripheral function |
| Chân 5 | PA4 — GPIO/Peripheral function |
| Chân 6 | PA5 — GPIO/Peripheral function |
| Chân 7 | PA6 — GPIO/Peripheral function |
| Chân 8 | PA7 — GPIO/Peripheral function |
| Chân 9 | VDDIO — I/O supply voltage |
| Chân 10 | VSSIO — I/O ground |
| Chân 11 | PB0 — GPIO/Peripheral function |
| Chân 12 | PB1 — GPIO/Peripheral function |
| Chân 13 | PB2 — GPIO/Peripheral function |
| Chân 14 | PB3 — GPIO/Peripheral function |
| Chân 15 | PB4 — GPIO/Peripheral function |
| Chân 16 | PB5 — GPIO/Peripheral function |
| Chân 17 | PB6 — GPIO/Peripheral function |
| Chân 18 | PB7 — GPIO/Peripheral function |
| Chân 19 | PB8 — GPIO/Peripheral function |
| Chân 20 | PB9 — GPIO/Peripheral function |
| Chân 21 | PB10 — GPIO/Peripheral function |
| Chân 22 | PB11 — GPIO/Peripheral function |
| Chân 23 | PB12 — GPIO/Peripheral function |
| Chân 24 | PB13 — GPIO/Peripheral function |
| Chân 25 | PB14 — GPIO/Peripheral function |
| Chân 26 | PB15 — GPIO/Peripheral function |
| Chân 27 | VDDCORE — Internal regulator output (decoupling) |
| Chân 28 | VSS — Core ground |
| Chân 29 | PC0 — GPIO/Peripheral function |
| Chân 30 | PC1 — GPIO/Peripheral function |
| Chân 31 | PC2 — GPIO/Peripheral function |
| Chân 32 | PC3 — GPIO/Peripheral function |
| Chân 33 | PC4 — GPIO/Peripheral function |
| Chân 34 | PC5 — GPIO/Peripheral function |
| Chân 35 | PC6 — GPIO/Peripheral function |
| Chân 36 | PC7 — GPIO/Peripheral function |
| Chân 37 | PC8 — GPIO/Peripheral function |
| Chân 38 | PC9 — GPIO/Peripheral function |
| Chân 39 | PC10 — GPIO/Peripheral function |
| Chân 40 | PC11 — GPIO/Peripheral function |
| Chân 41 | PC12 — GPIO/Peripheral function |
| Chân 42 | PC13 — GPIO/Peripheral function |
| Chân 43 | PC14 — GPIO/Peripheral function |
| Chân 44 | PC15 — GPIO/Peripheral function |
| Chân 45 | PD0 — GPIO/Peripheral function |
| Chân 46 | PD1 — GPIO/Peripheral function |
| Chân 47 | PD2 — GPIO/Peripheral function |
| Chân 48 | PD3 — GPIO/Peripheral function |
| Chân 49 | PD4 — GPIO/Peripheral function |
| Chân 50 | PD5 — GPIO/Peripheral function |
| Chân 51 | PD6 — GPIO/Peripheral function |
| Chân 52 | PD7 — GPIO/Peripheral function |
| Chân 53 | PD8 — GPIO/Peripheral function |
| Chân 54 | PD9 — GPIO/Peripheral function |
| Chân 55 | PD10 — GPIO/Peripheral function |
| Chân 56 | PD11 — GPIO/Peripheral function |
| Chân 57 | PD12 — GPIO/Peripheral function |
| Chân 58 | PD13 — GPIO/Peripheral function |
| Chân 59 | PD14 — GPIO/Peripheral function |
| Chân 60 | PD15 — GPIO/Peripheral function |
| Chân 61 | VDDIO — I/O supply voltage |
| Chân 62 | VSSIO — I/O ground |
| Chân 63 | PE0 — GPIO/Peripheral function |
| Chân 64 | PE1 — GPIO/Peripheral function |
| Chân 65 | PE2 — GPIO/Peripheral function |
| Chân 66 | PE3 — GPIO/Peripheral function |
| Chân 67 | PE4 — GPIO/Peripheral function |
| Chân 68 | PE5 — GPIO/Peripheral function |
| Chân 69 | PE6 — GPIO/Peripheral function |
| Chân 70 | PE7 — GPIO/Peripheral function |
| Chân 71 | PE8 — GPIO/Peripheral function |
| Chân 72 | VDDPLL — PLL supply |
| Chân 73 | VSSPLL — PLL ground |
| Chân 74 | XIN — Crystal oscillator input |
| Chân 75 | XOUT — Crystal oscillator output |
| Chân 76 | XIN32 — 32 kHz crystal input |
| Chân 77 | XOUT32 — 32 kHz crystal output |
| Chân 78 | NRST — Reset (active low) |
| Chân 79 | JTAGSEL — JTAG/ICE mode select |
| Chân 80 | TDI — JTAG TDI |
| Chân 81 | TDO — JTAG TDO |
| Chân 82 | TMS — JTAG TMS / SWDIO |
| Chân 83 | TCK — JTAG TCK / SWCLK |
| Chân 84 | ERASE — Flash erase strap |
| Chân 85 | WAKEUP — Wake-up pin |
| Chân 86 | VBUS — USB VBUS detect |
| Chân 87 | DP — USB Data+ |
| Chân 88 | DM — USB Data- |
| Chân 89 | VDDUTMI — USB transceiver supply |
| Chân 90 | VDDUTMII — USB transceiver supply |
| Chân 91 | PF0 — GPIO/Peripheral function |
| Chân 92 | PF1 — GPIO/Peripheral function |
| Chân 93 | PF2 — GPIO/Peripheral function |
| Chân 94 | PF3 — GPIO/Peripheral function |
| Chân 95 | PF4 — GPIO/Peripheral function |
| Chân 96 | PF5 — GPIO/Peripheral function |
| Chân 97 | PF6 — GPIO/Peripheral function |
| Chân 98 | PF7 — GPIO/Peripheral function |
| Chân 99 | VDDIO — I/O supply voltage |
| Chân 100 | VSSIO — I/O ground |
Ứng dụng tiêu biểu
ATSAM4S8CA-AUR phù hợp cho 7 Áp dụngs: Industrial Control Gateways, Smart Metering and Energy Monitoring, USB Peripherals and HID Devices, Building Automation HMI Panels, Point-of-Sale (POS) Terminals, Automotive Aftermarket CAN Modules, Low-Cost Data Acquisition Systems.
Industrial Control Gateways
The ATSAM4S8CA-AUR fits industrial control gateways because its 120 MHz Cortex-M4 core with FPU handles TCP/IP offload, BACnet or Modbus stacks, and local control loops concurrently, while the 512 KB Flash accommodates protocol libraries plus 128 KB SRAM for packet buffers. The integrated CAN 2.0B controller links directly to field-bus sensor networks, and the USB 2.0 Full-Speed device/host port serves as a local diagnostics or commissioning interface. Power consumption of 200 uA/MHz at low frequency suits always-on industrial nodes where heat and energy are constraints.
Được đề xuất
Smart Metering and Energy Monitoring
For smart metering, the ATSAM4S8CA-AUR's on-chip 12-bit ADC samples multi-channel voltage and current waveforms, while the Cortex-M4 DSP extensions compute real-time FFT-based harmonics analysis and RMS calculations. The 128 KB SRAM buffers raw sample windows before downsampling, and the 512 KB Flash holds metering firmware plus calibration tables. Low-power back-up mode with the RTC running at 3 uA enables battery-augmented meters that survive line outages, and the 1.62-3.6 V supply range covers rectified 3.3 V rail designs.
Được đề xuất
USB Peripherals and HID Devices
The ATSAM4S8CA-AUR's integrated USB 2.0 Full-Speed device/host controller and 512 KB Flash support USB HID, CDC, and composite-class devices without an external PHY, reducing BOM cost. The Cortex-M4 DSP extensions accelerate protocol processing for custom USB-class firmware or audio streaming applications. The LQFP-100 package exposes the full 16-bit external bus interface, allowing expansion to external SRAM or NOR Flash for data loggers. Industrial -40 C to +85 C temperature grade suits ruggedized peripherals.
Được đề xuất
Building Automation HMI Panels
The ATSAM4S8CA-AUR is well-suited to entry-level building automation HMI panels where the 100-LQFP footprint provides enough GPIO for keypads, character LCDs, and status LEDs. The Cortex-M4 with FPU renders UI menus and small graphic primitives, while 128 KB SRAM supports frame buffers for short status graphics. The 12-bit ADC and PWM timers drive ambient light sensing and LED dimming, and the on-chip RTC with back-up power keeps accurate timekeeping during mains brown-outs in residential gateways.
Được đề xuất
Point-of-Sale (POS) Terminals
POS terminals rely on the ATSAM4S8CA-AUR for keyboard scanning, magnetic-stripe reader interface, thermal printer control, and encrypted PIN-pad handling over SPI/TWI. The 120 MHz Cortex-M4 executes ISO 8583 message parsing and AES encryption for transaction security, while 512 KB Flash accommodates application plus bootloader for OTA update. The CAN peripheral is repurposed for inventory cabinet networking in retail back-office environments, and the 1.62-3.6 V range accepts the typical 3.3 V powered POS rails.
Được đề xuất
Automotive Aftermarket CAN Modules
The ATSAM4S8CA-AUR's CAN 2.0B controller and 120 MHz Cortex-M4 enable OBD-II scan tools, fleet telemetry dongles, and aftermarket ECU accessories that tap into vehicle CAN buses. The 512 KB Flash holds J1939 and ISO-TP protocol stacks plus application firmware, and the 128 KB SRAM buffers vehicle bus data during cellular uplink bursts. The 100-LQFP industrial temperature grade is acceptable for cabin-mounted aftermarket products, though AEC-Q100 Grade 0 designs should consider ATSAM V70/V71 instead.
Được đề xuất
Low-Cost Data Acquisition Systems
Multi-channel 12-bit ADC performance, dual USART ports, and SPI/TWI expansion make the ATSAM4S8CA-AUR a fit for portable data loggers. The Cortex-M4 DSP extensions run on-board FFT analysis of vibration, temperature, or strain signals, and 512 KB Flash stores months of compressed data plus application code. The low-power back-up mode with RTC retains time stamps across battery swaps, and the 100-LQFP industrial temperature range suits outdoor or industrial cabinet installations.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAM4S8CA-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 | ATSAM4S8CA-AU | ATSAM4S16CA-AU | ATSAM4S16CA-AUR | ATSAM4S8BA-MU | ATSAM4S8BB-UUR | STM32F407VGT6 |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | STMicroelectronics |
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP - same | 100-LQFP - same | 100-LQFP - same (pinout differs) |
| Core / Clock | Cortex-M4 / 120 MHz | Cortex-M4 / 120 MHz | Cortex-M4 / 120 MHz | Cortex-M4 / 120 MHz | Cortex-M4 / 120 MHz | Cortex-M4 / 120 MHz | Cortex-M4 / 168 MHz |
| Flash | 512 KB | 512 KB | 1024 KB | 1024 KB | 512 KB | 512 KB | 1024 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 192 KB |
| Supply Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.8 V to 3.6 V |
| 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 | USB 2.0 FS Device/Host | USB 2.0 FS + HS OTG |
| CAN | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B x2 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Bảo phân biệt quan trọng
- Pin-to-pin compatibility within the SAM4S family (vsATSAM4S16CA-AU (1024 KB Flash))
- True LQFP-100 cross-brand form-factor match (vsSTM32F407VGT6)
- USB 2.0 Full-Speed Device/Host and CAN 2.0B on-chip (vsATSAM4S4AA-MU (smaller QFN package))
Ghi chú thiết kế
The ATSAM4S8CA-AUR operates from a single 1.62-3.6 V supply; place a 10 uF bulk capacitor plus 100 nF decoupling on each VDDIO pin pair (the LQFP-100 has four VDDIO/VSSIO pairs at pins 9/10, 61/62, 99/100, and elsewhere). The internal 1.2 V LDO drives VDDCORE (pin 27) and requires a 1 uF low-ESR capacitor. Estimated: dynamic current draw at 120 MHz is approximately 24 mA (200 uA/MHz), so budget headroom when selecting the supply regulator - a 100 mA LDO such as MCP1825 leaves margin for transient peaks.
At industrial -40 C to +85 C ambient with 24 mA active current, the LQFP-100 dissipates roughly 80 mW at 3.3 V, far below thermal limits. However, when USB High-Speed is active on variants that support it, the additional transceiver current and the worst-case 168 MHz operation push dissipation toward 150 mW. Recommended: provide at least 4 cm^2 of top-layer copper tied to VSSIO for thermal spreading; per the SAM4S datasheet, theta-JA on a standard JEDEC 2S2P board is approximately 50 C/W.
Three boot pitfalls trip up first-time users: (1) the ERASE pin (pin 84) must be left floating or pulled high at reset to enter normal mode - pulling it low triggers full Flash erase, which can brick a board. (2) JTAGSEL (pin 79) selects between JTAG and SWD; tying it wrong disables both debug interfaces. (3) When migrating from SAM3S/SAM4N, ensure the boot mode strap on NRST is timed correctly; long reset assertion after power-up is required for crystal stabilization.
Place the main 12 MHz crystal within 8 mm of XIN/XOUT (pins 74/75) and route the traces symmetrically with a ground guard ring to suppress EMI. The 32 kHz crystal on XIN32/XOUT32 (pins 76/77) is even more sensitive - keep it isolated from high-frequency switching nodes. For the USB differential pair (DP pin 87, DM pin 88), maintain 90-ohm differential impedance with no stubs, and place the USBLC6-2SC6 ESD array within 3 mm of the connector.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40 C to +85 C), not AEC-Q100 qualified. For AEC-Q100 automotive designs consider SAM V70/V71 or ATSAMx70 series.
