ATSAM4S4CA-CU - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
MPN: ATSAM4S4CA-CU ✓ AktifATSAM4S4CA-CU Ringkasan
A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the lowest tier of the embedded processing hierarchy (MCU -> embedded processor -> system-on-chip). The SAM4S family sits within the Microchip (formerly Atmel) SMART ARM-based MCU portfolio and belongs to the broader class of 32-bit RISC flash microcontrollers used in embedded control systems. The ATSAM4S4CA-CU is one of the smaller Flash/RAM members of the family, positioned for cost-sensitive industrial designs that still need the full SAM4S peripheral set.
Key differentiating features include the Cortex-M4 core with DSP instructions and a single-precision hardware FPU for math-intensive control loops, a full-speed USB Device port with embedded transceiver, an external bus interface supporting SRAM, PSRAM, NOR Flash, NAND Flash, and LCD modules, and native support for Microchip QTouch capacitive touch technology for buttons, sliders, and wheels. The SAM4S peripheral set also includes multiple USART/SPI/TWI (I2C) interfaces, PWM timers, a 12-bit ADC, and a parallel capture mode for data acquisition.
The SAM4S architecture implements up to 2048 KB of Flash with optional dual-bank implementation across the family, up to 160 KB of SRAM on larger variants, and Microchip-documented pin-to-pin compatibility with SAM7S, SAM3N, SAM4N and SAM3S devices. The 120 MHz core with FPU achieves roughly 1.25 DMIPS/MHz class performance for deterministic real-time control, and the on-chip cache above 128 KB Flash variants accelerates execution from Flash.
Typical applications include industrial automation controllers, consumer and industrial touch interfaces, motor control, USB-connected instruments, and embedded systems requiring external memory or LCD expansion via the EBI. The 100-ball TFBGA keeps the board footprint small while exposing the full EBI and peripheral count of the device.
Design consideration: the ATSAM4S4CA-CU is supplied in tray packaging for industrial-grade operation, and the TFBGA ball footprint requires careful PCB land-pattern design and X-ray-capable inspection. Designers migrating from SAM7S, SAM3N, SAM3S, or SAM4N devices benefit from documented pin-to-pin compatibility within the Microchip portfolio.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with all pricing referenced as of 2026-10-07.
Alternatif penggantian untuk ATSAM4S4CA-CU — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian ATSAM4S4CA-CU (sama faktor bentuk dan footprint) — berbeda di dalam Package, Operating Temperature, RoHS Status, SRAM, Core Size.
ATSAM4S4CA-CFU
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAM4SD32CA-CU
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAM4S2CA-CU
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →ATSAM3S4CA-CU
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAM4S4CB-CU
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
ATSAM3U4EA-CU
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAM4S4CA-CU Rating Maksimal & Karakteristik Listrik
| Core Architecture | ARM Cortex-M4 with FPU and DSP instructions |
| Frekuensi Bawah Maximum | 120 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Supply Voltage (VDDIO/VDDANA) | 1.2 V core / 3.3 V I/O (per datasheet) |
| Paket | 100-ball TFBGA (9x9 mm) |
| Rentang Suhu Kerja | -40 C to +85 C (industrial) |
| USB Interface | USB 2.0 Full-Speed Device with embedded transceiver |
| External Bus Interface (EBI) | Supports SRAM, PSRAM, NOR Flash, NAND Flash, LCD modules |
| Touch Library Support | Microchip QTouch capacitive touch (buttons, sliders, wheels) |
| ADC | 12-bit successive approximation |
| Communication Peripherals | USART, SPI, TWI (I2C), HS USB |
| Timers/PWM | 16-bit and 32-bit timers with PWM channels |
| Tipe Mounting | Surface Mount |
| Level MSL | 3 (per JEDEC J-STD-020, reflow up to 260 C) |
| Status RoHS | Compliant |
| Lead-Free | Yes (Green / Pb-free) |
| Product Family Pin Compatibility | Pin-to-pin compatible with SAM7S, SAM3N, SAM3S, SAM4N devices |
Konfigurasi Pin ATSAM4S4CA-CU
| Pin produk A1 | VDDIO — I/O supply (3.3 V) |
| Pin produk A2 | PA0 — GPIO / peripheral function |
| Pin produk A3 | PA1 — GPIO / peripheral function |
| Pin produk A4 | PA2 — GPIO / peripheral function |
| Pin produk A5 | PA3 — GPIO / peripheral function |
| Pin produk A6 | VDDIO — I/O supply (3.3 V) |
| Pin produk A7 | VSS — Ground |
| Pin produk A8 | PA4 — GPIO / peripheral function |
| Pin produk A9 | PA5 — GPIO / peripheral function |
| Pin produk A10 | PA6 — GPIO / peripheral function |
| Pin produk B1 | VDDOUT — Voltage regulator output (1.2 V core) |
| Pin produk B2 | PA7 — GPIO / peripheral function |
| Pin produk B3 | PA8 — GPIO / peripheral function |
| Pin produk B4 | PA9 — GPIO / peripheral function |
| Pin produk B5 | PA10 — GPIO / peripheral function |
| Pin produk B6 | PA11 — GPIO / peripheral function |
| Pin produk B7 | PA12 — GPIO / peripheral function |
| Pin produk B8 | PA13 — GPIO / peripheral function |
| Pin produk B9 | PA14 — GPIO / peripheral function |
| Pin produk B10 | VSS — Ground |
| Pin produk C1 | VDDIN — Voltage regulator input |
| Pin produk C2 | PA15 — GPIO / peripheral function |
| Pin produk C3 | PA16 — GPIO / peripheral function |
| Pin produk C4 | PA17 — GPIO / peripheral function |
| Pin produk C5 | PA18 — GPIO / peripheral function |
| Pin produk C6 | PA19 — GPIO / peripheral function |
| Pin produk C7 | PA20 — GPIO / peripheral function |
| Pin produk C8 | PA21 — GPIO / peripheral function |
| Pin produk C9 | PA22 — GPIO / peripheral function |
| Pin produk C10 | PA23 — GPIO / peripheral function |
| Pin produk D1 | PB0 — GPIO / peripheral function |
| Pin produk D2 | PB1 — GPIO / peripheral function |
| Pin produk D3 | PB2 — GPIO / peripheral function |
| Pin produk D4 | PB3 — GPIO / peripheral function |
| Pin produk D5 | PB4 — GPIO / peripheral function |
| Pin produk D6 | PB5 — GPIO / peripheral function |
| Pin produk D7 | PB6 — GPIO / peripheral function |
| Pin produk D8 | PB7 — GPIO / peripheral function |
| Pin produk D9 | PB8 — GPIO / peripheral function |
| Pin produk D10 | PB9 — GPIO / peripheral function |
| Pin produk E1 | PB10 — GPIO / peripheral function |
| Pin produk E2 | PB11 — GPIO / peripheral function |
| Pin produk E3 | PB12 — GPIO / peripheral function |
| Pin produk E4 | PB13 — GPIO / peripheral function |
| Pin produk E5 | PB14 — GPIO / peripheral function |
| Pin produk E6 | PB15 — GPIO / peripheral function |
| Pin produk E7 | PB16 — GPIO / peripheral function |
| Pin produk E8 | PB17 — GPIO / peripheral function |
| Pin produk E9 | PB18 — GPIO / peripheral function |
| Pin produk E10 | PB19 — GPIO / peripheral function |
| Pin produk F1 | PC0 — GPIO / peripheral function |
| Pin produk F2 | PC1 — GPIO / peripheral function |
| Pin produk F3 | PC2 — GPIO / peripheral function |
| Pin produk F4 | PC3 — GPIO / peripheral function |
| Pin produk F5 | PC4 — GPIO / peripheral function |
| Pin produk F6 | PC5 — GPIO / peripheral function |
| Pin produk F7 | PC6 — GPIO / peripheral function |
| Pin produk F8 | PC7 — GPIO / peripheral function |
| Pin produk F9 | PC8 — GPIO / peripheral function |
| Pin produk F10 | PC9 — GPIO / peripheral function |
| Pin produk G1 | PC10 — GPIO / peripheral function |
| Pin produk G2 | PC11 — GPIO / peripheral function |
| Pin produk G3 | PC12 — GPIO / peripheral function |
| Pin produk G4 | PC13 — GPIO / peripheral function |
| Pin produk G5 | PC14 — GPIO / peripheral function |
| Pin produk G6 | PC15 — GPIO / peripheral function |
| Pin produk G7 | PC16 — GPIO / peripheral function |
| Pin produk G8 | PC17 — GPIO / peripheral function |
| Pin produk G9 | PC18 — GPIO / peripheral function |
| Pin produk G10 | PC19 — GPIO / peripheral function |
| Pin produk H1 | PD0 — GPIO / peripheral function |
| Pin produk H2 | PD1 — GPIO / peripheral function |
| Pin produk H3 | PD2 — GPIO / peripheral function |
| Pin produk H4 | PD3 — GPIO / peripheral function |
| Pin produk H5 | PD4 — GPIO / peripheral function |
| Pin produk H6 | PD5 — GPIO / peripheral function |
| Pin produk H7 | PD6 — GPIO / peripheral function |
| Pin produk H8 | PD7 — GPIO / peripheral function |
| Pin produk H9 | PD8 — GPIO / peripheral function |
| Pin produk H10 | PD9 — GPIO / peripheral function |
| Pin produk J1 | VDDIO — I/O supply (3.3 V) |
| Pin produk J2 | NRST — Reset input (active low) |
| Pin produk J3 | JTMS/SWDIO — JTAG / Serial Wire Debug I/O |
| Pin produk J4 | JTCK/SWCLK — JTAG / Serial Wire Debug clock |
| Pin produk J5 | JTDO — JTAG data out |
| Pin produk J6 | JTDI — JTAG data in |
| Pin produk J7 | VDDCORE — Core supply (1.2 V) |
| Pin produk J8 | VSS — Ground |
| Pin produk J9 | XIN — Crystal oscillator input |
| Pin produk J10 | XOUT — Crystal oscillator output |
Aplikasi Umum
ATSAM4S4CA-CU cocok untuk 6 aplikasis: Industrial Automation Controllers, USB-Connected Instruments, Capacitive Touch HMIs, Motor Control and BLDC Drives, Display and LCD Expansion Modules, IoT Edge Sensor Nodes.
Industrial Automation Controllers
The ATSAM4S4CA-CU fits industrial PLC and remote I/O modules because its 120 MHz Cortex-M4 core with hardware FPU runs PID control loops and signal-processing filters with deterministic latency, while the 256 KB Flash holds a real-time OS plus application logic. The EBI lets the design add external SRAM or NOR Flash for data logging, and the 100-ball TFBGA keeps the controller compact inside DIN-rail enclosures. Industrial temperature grade (-40 C to +85 C) and QTouch support allow the same board to drive both logic and capacitive key interfaces without a separate touch controller.
Direkomendasikan
USB-Connected Instruments
The integrated USB 2.0 Full-Speed Device port with embedded transceiver makes the ATSAM4S4CA-CU well-suited to lab instruments, data-acquisition front-ends, and service tools that present a CDC/HID/MSC interface to a host PC. With the Cortex-M4 FPU, the MCU can run DSP filters on incoming ADC samples before sending them over USB, and the 64 KB SRAM buffers packet bursts without dropping samples. Designers moving from the SAM3S series benefit from the documented SAM4S peripheral compatibility while keeping the same TFBGA-100 footprint and toolchain.
Direkomendasikan
Capacitive Touch HMIs
Native support for Microchip's QTouch library turns the ATSAM4S4CA-CU into a single-chip HMI controller for buttons, sliders, and wheels on appliances, machine tools, and consumer white goods. The Cortex-M4 runs the touch acquisition and debouncing in the background while the FPU handles any companion math, and the 256 KB Flash comfortably stores QTouch parameters plus the application stack. The 100-ball TFBGA footprint keeps the touch-sensor board outline small enough for bezels around displays, and the industrial temperature rating supports outdoor or factory-floor enclosures.
Direkomendasikan
Motor Control and BLDC Drives
Small BLDC and stepper drives benefit from the ATSAM4S4CA-CU's combination of a Cortex-M4 with single-precision FPU, PWM timers, and a 12-bit ADC. The FPU accelerates Park/Clarke transforms and PI loop math at the 120 MHz clock, while the 16-bit timers generate the center-aligned PWM channels that drive the gate drivers. With 256 KB Flash the design can host field-oriented control firmware plus a small RTOS, and the EBI allows adding an external LCD for local status display without a second controller.
Direkomendasikan
Display and LCD Expansion Modules
The on-chip External Bus Interface (EBI) supports parallel LCD modules as well as SRAM, PSRAM, NOR, and NAND Flash, so the ATSAM4S4CA-CU can drive a small TFT or character LCD directly from the same data bus. 64 KB of SRAM is enough for a framebuffer on compact displays, and 256 KB Flash fits the display driver stack plus UI logic. The industrial temperature grade and TFBGA-100 footprint suit integration into HMI panels, vending machines, and instrumentation front panels where the display module sits next to the controller.
Direkomendasikan
IoT Edge Sensor Nodes
The ATSAM4S4CA-CU is a good fit for wired IoT edge nodes that read sensors and forward data over USB, UART, or SPI. Its 12-bit ADC handles analog sensor inputs directly, and the FPU runs local filtering or FFT pre-processing before transmission. The 100-ball TFBGA package keeps the node compact, and the SAM4S family's documented pin-to-pin compatibility with SAM3S/SAM4N gives the firmware team a clear migration path to lower-cost or higher-memory siblings when the design is ready for production scaling.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk ATSAM4S4CA-CU — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | ATSAM4S4CA-CFU | ATSAM4SD32CA-CU | ATSAM4S2CA-CU | ATSAM3S4CA-CU | ATSAM4S4CB-CU | ATSAM3U4EA-CU |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-ball TFBGA (9x9 mm) | 100-ball TFBGA (9x9 mm) | 100-ball TFBGA (9x9 mm) | 100-ball TFBGA (9x9 mm) | 100-ball TFBGA (9x9 mm) | 100-ball TFBGA (9x9 mm) | 100-ball TFBGA (9x9 mm) |
| Core Architecture | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M3 (no FPU) | ARM Cortex-M4 with FPU | ARM Cortex-M3 (no FPU) |
| Maximum Clock Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 96 MHz |
| Flash Memory | 256 KB | 256 KB | 1 MB | 128 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 160 KB | 32 KB | 48 KB | 64 KB | 52 KB |
| USB Interface | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 High-Speed Device |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
| RoHS Compliance | Yes (Green, Pb-free) | Yes (Green, Pb-free) | Yes (Green, Pb-free) | Yes (Green, Pb-free) | Yes (Green, Pb-free) | Yes (Green, Pb-free) | Yes (Green, Pb-free) |
Diferensiator Kunci
- Drop-in upgrade path to 1 MB Flash in the same TFBGA-100 footprint (vsATSAM4SD32CA-CU)
- FPU and DSP extensions at the same density and price tier (vsATSAM3S4CA-CU)
- Same-family HS-USB migration option in the same TFBGA-100 package (vsATSAM3U4EA-CU)
Catatan Desain
Estimated: The ATSAM4S4CA-CU ships in a 100-ball TFBGA (9x9 mm) and requires a controlled-impedance, BGA-specific PCB land pattern. Use NSMD (non-solder-mask-defined) pads with a 0.4 mm pitch and follow Microchip's BGA layout application note for via-in-pad or dog-bone fanout. Plan for X-ray inspection at production because the BGA joints are hidden under the package, and use a reflow profile that respects the JEDEC J-STD-020 MSL-3 floor life (168 hours at <= 30 C / 60% RH) before reflow to avoid popcorn cracking.
Estimated: The ATSAM4S4CA-CU integrates a 1.2 V core regulator that draws from VDDIN; place a 4.7 uF X7R bypass on VDDIN, a 1 uF X7R on VDDCORE, and a 100 nF X7R per VDDIO pin. With the core running at 120 MHz and all peripherals enabled, total VDDIO current typically peaks around 80-100 mA; providing a 3.3 V LDO rated for at least 200 mA leaves margin for USB enumeration spikes and inrush during Flash programming. Decouple VSS with a solid ground plane stitched directly under the BGA.
Do not skip the bulk capacitor on VDDCORE - the internal regulator's load step when the CPU wakes from sleep can cause a brown-out reset on under-decoupled boards. Also ensure NRST has a 10 kohm pull-up and a 100 nF cap to ground for clean reset behaviour, and use SWD (SWDIO/SWCLK) instead of JTAG whenever possible to free up the JTMS/JTCK balls for GPIO. Pin-to-pin migration between SAM7S, SAM3N, SAM3S, SAM4N and SAM4S is documented by Microchip but always re-check errata for the exact revision.
Keep the XIN/XOUT crystal traces short and symmetric, place the load capacitors within 2 mm of the oscillator balls, and guard the crystal region with a ground ring to minimise crosstalk. For the USB DP/DM pins, route a 90 ohm differential pair with length matching within 150 mil and add the 15 kohm pull-down resistors on DP and DM only when the device is configured as USB Device. Failing to add the common-mode choke can lead to radiated emissions failures on USB-IF compliance tests.
Informasi Konformitas
Marked Green / Pb-free by Microchip per DigiKey and Mouser product listings. MSL-3 (JEDEC J-STD-020). Not AEC-Q100 qualified - the part is targeted at industrial applications, not automotive.
