ATSAM4S8CA-AUR - 120MHz Cortex-M4 MCU 512KB Flash LQFP-100 | Microchip
N.º de pieza: ATSAM4S8CA-AUR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.46 | $7,46 |
| 10 | $6.71 | $67,10 |
| 100 | $5.97 | $597,00 |
| 500 | $5.45 | $2.725,00 |
| 1.000 | $5.1 | $5.100,00 |
ATSAM4S8CA-AUR Descripción general
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.
Alternativas directas para ATSAM4S8CA-AUR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAM4S8CA-AUR (mismo factor de forma y huella) — difiere en Package, ADC, Operating Temperature, Supply Voltage, RoHS Status.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATSAM4S8CA-AU
✅ Sustitución directa✓ En stock
$5.74 / unidad
Ver hoja de datos →ATSAM4S16CA-AU
✅ Sustitución directa✓ En stock
$5.55 / unidad
Ver hoja de datos →ATSAM4S16CA-AUR
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →ATSAM4S8BA-MU
✅ Sustitución directa✓ En stock
$5.79 / unidad
Ver hoja de datos →ATSAM4S8BB-UUR
✅ Sustitución directa✓ En stock
$3.05 / unidad
Ver hoja de datos →STM32F407VGT6
✅ Sustitución directa✓ En stock
$7.55 / unidad
Ver hoja de datos →ATSAM4S8CA-AUR Valores máximos y características eléctricas
| 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 |
| Tensión de alimentación | 1.62 V to 3.6 V |
| Encapsulado | 100-LQFP (14x14 mm) |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -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) |
| Nivel MSL | 3 (per JEDEC J-STD-020) |
| Estado RoHS | Compliant |
| Delivery Form | Tape & Reel |
| Series | SAM4S |
Configuración de pines de ATSAM4S8CA-AUR
| Pin 1 | PA0 — GPIO/Peripheral function |
| Pin 2 | PA1 — GPIO/Peripheral function |
| Pin 3 | PA2 — GPIO/Peripheral function |
| Pin 4 | PA3 — GPIO/Peripheral function |
| Pin 5 | PA4 — GPIO/Peripheral function |
| Pin 6 | PA5 — GPIO/Peripheral function |
| Pin 7 | PA6 — GPIO/Peripheral function |
| Pin 8 | PA7 — GPIO/Peripheral function |
| Pin 9 | VDDIO — I/O supply voltage |
| Pin 10 | VSSIO — I/O ground |
| Pin 11 | PB0 — GPIO/Peripheral function |
| Pin 12 | PB1 — GPIO/Peripheral function |
| Pin 13 | PB2 — GPIO/Peripheral function |
| Pin 14 | PB3 — GPIO/Peripheral function |
| Pin 15 | PB4 — GPIO/Peripheral function |
| Pin 16 | PB5 — GPIO/Peripheral function |
| Pin 17 | PB6 — GPIO/Peripheral function |
| Pin 18 | PB7 — GPIO/Peripheral function |
| Pin 19 | PB8 — GPIO/Peripheral function |
| Pin 20 | PB9 — GPIO/Peripheral function |
| Pin 21 | PB10 — GPIO/Peripheral function |
| Pin 22 | PB11 — GPIO/Peripheral function |
| Pin 23 | PB12 — GPIO/Peripheral function |
| Pin 24 | PB13 — GPIO/Peripheral function |
| Pin 25 | PB14 — GPIO/Peripheral function |
| Pin 26 | PB15 — GPIO/Peripheral function |
| Pin 27 | VDDCORE — Internal regulator output (decoupling) |
| Pin 28 | VSS — Core ground |
| Pin 29 | PC0 — GPIO/Peripheral function |
| Pin 30 | PC1 — GPIO/Peripheral function |
| Pin 31 | PC2 — GPIO/Peripheral function |
| Pin 32 | PC3 — GPIO/Peripheral function |
| Pin 33 | PC4 — GPIO/Peripheral function |
| Pin 34 | PC5 — GPIO/Peripheral function |
| Pin 35 | PC6 — GPIO/Peripheral function |
| Pin 36 | PC7 — GPIO/Peripheral function |
| Pin 37 | PC8 — GPIO/Peripheral function |
| Pin 38 | PC9 — GPIO/Peripheral function |
| Pin 39 | PC10 — GPIO/Peripheral function |
| Pin 40 | PC11 — GPIO/Peripheral function |
| Pin 41 | PC12 — GPIO/Peripheral function |
| Pin 42 | PC13 — GPIO/Peripheral function |
| Pin 43 | PC14 — GPIO/Peripheral function |
| Pin 44 | PC15 — GPIO/Peripheral function |
| Pin 45 | PD0 — GPIO/Peripheral function |
| Pin 46 | PD1 — GPIO/Peripheral function |
| Pin 47 | PD2 — GPIO/Peripheral function |
| Pin 48 | PD3 — GPIO/Peripheral function |
| Pin 49 | PD4 — GPIO/Peripheral function |
| Pin 50 | PD5 — GPIO/Peripheral function |
| Pin 51 | PD6 — GPIO/Peripheral function |
| Pin 52 | PD7 — GPIO/Peripheral function |
| Pin 53 | PD8 — GPIO/Peripheral function |
| Pin 54 | PD9 — GPIO/Peripheral function |
| Pin 55 | PD10 — GPIO/Peripheral function |
| Pin 56 | PD11 — GPIO/Peripheral function |
| Pin 57 | PD12 — GPIO/Peripheral function |
| Pin 58 | PD13 — GPIO/Peripheral function |
| Pin 59 | PD14 — GPIO/Peripheral function |
| Pin 60 | PD15 — GPIO/Peripheral function |
| Pin 61 | VDDIO — I/O supply voltage |
| Pin 62 | VSSIO — I/O ground |
| Pin 63 | PE0 — GPIO/Peripheral function |
| Pin 64 | PE1 — GPIO/Peripheral function |
| Pin 65 | PE2 — GPIO/Peripheral function |
| Pin 66 | PE3 — GPIO/Peripheral function |
| Pin 67 | PE4 — GPIO/Peripheral function |
| Pin 68 | PE5 — GPIO/Peripheral function |
| Pin 69 | PE6 — GPIO/Peripheral function |
| Pin 70 | PE7 — GPIO/Peripheral function |
| Pin 71 | PE8 — GPIO/Peripheral function |
| Pin 72 | VDDPLL — PLL supply |
| Pin 73 | VSSPLL — PLL ground |
| Pin 74 | XIN — Crystal oscillator input |
| Pin 75 | XOUT — Crystal oscillator output |
| Pin 76 | XIN32 — 32 kHz crystal input |
| Pin 77 | XOUT32 — 32 kHz crystal output |
| Pin 78 | NRST — Reset (active low) |
| Pin 79 | JTAGSEL — JTAG/ICE mode select |
| Pin 80 | TDI — JTAG TDI |
| Pin 81 | TDO — JTAG TDO |
| Pin 82 | TMS — JTAG TMS / SWDIO |
| Pin 83 | TCK — JTAG TCK / SWCLK |
| Pin 84 | ERASE — Flash erase strap |
| Pin 85 | WAKEUP — Wake-up pin |
| Pin 86 | VBUS — USB VBUS detect |
| Pin 87 | DP — USB Data+ |
| Pin 88 | DM — USB Data- |
| Pin 89 | VDDUTMI — USB transceiver supply |
| Pin 90 | VDDUTMII — USB transceiver supply |
| Pin 91 | PF0 — GPIO/Peripheral function |
| Pin 92 | PF1 — GPIO/Peripheral function |
| Pin 93 | PF2 — GPIO/Peripheral function |
| Pin 94 | PF3 — GPIO/Peripheral function |
| Pin 95 | PF4 — GPIO/Peripheral function |
| Pin 96 | PF5 — GPIO/Peripheral function |
| Pin 97 | PF6 — GPIO/Peripheral function |
| Pin 98 | PF7 — GPIO/Peripheral function |
| Pin 99 | VDDIO — I/O supply voltage |
| Pin 100 | VSSIO — I/O ground |
Aplicaciones típicas
ATSAM4S8CA-AUR es adecuado para 7 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAM4S8CA-AUR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- Pin-to-pin compatibility within the SAM4S family (frente a ATSAM4S16CA-AU (1024 KB Flash))
- True LQFP-100 cross-brand form-factor match (frente a STM32F407VGT6)
- USB 2.0 Full-Speed Device/Host and CAN 2.0B on-chip (frente a ATSAM4S4AA-MU (smaller QFN package))
Notas de diseño
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.
Información de cumplimiento
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.
