ATSAM4S4CA-CU - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
MPN: ATSAM4S4CA-CU ✓ פעילATSAM4S4CA-CU סקירה
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.
חלופות תחליף ישיר עבור ATSAM4S4CA-CU — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ATSAM4S4CA-CU (אותו גורם צורה וטביעת רגל) — שונים ב Package, Operating Temperature, RoHS Status, SRAM, Core Size.
ATSAM4S4CA-CFU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAM4SD32CA-CU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAM4S2CA-CU
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAM3S4CA-CU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAM4S4CB-CU
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
ATSAM3U4EA-CU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATSAM4S4CA-CU דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | ARM Cortex-M4 with FPU and DSP instructions |
| תדר שעון מקסימלי | 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) |
| מארז | 100-ball TFBGA (9x9 mm) |
| טווח טמפרטורת פעולה | -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 |
| סוג הרכבה | Surface Mount |
| רמת MSL | 3 (per JEDEC J-STD-020, reflow up to 260 C) |
| סטטוס RoHS | Compliant |
| Lead-Free | Yes (Green / Pb-free) |
| Product Family Pin Compatibility | Pin-to-pin compatible with SAM7S, SAM3N, SAM3S, SAM4N devices |
תצורת פינים של ATSAM4S4CA-CU
| פין A1 | VDDIO — I/O supply (3.3 V) |
| פין A2 | PA0 — GPIO / peripheral function |
| פין A3 | PA1 — GPIO / peripheral function |
| פין A4 | PA2 — GPIO / peripheral function |
| פין A5 | PA3 — GPIO / peripheral function |
| פין A6 | VDDIO — I/O supply (3.3 V) |
| פין A7 | VSS — Ground |
| פין A8 | PA4 — GPIO / peripheral function |
| פין A9 | PA5 — GPIO / peripheral function |
| פין A10 | PA6 — GPIO / peripheral function |
| פין B1 | VDDOUT — Voltage regulator output (1.2 V core) |
| פין B2 | PA7 — GPIO / peripheral function |
| פין B3 | PA8 — GPIO / peripheral function |
| פין B4 | PA9 — GPIO / peripheral function |
| פין B5 | PA10 — GPIO / peripheral function |
| פין B6 | PA11 — GPIO / peripheral function |
| פין B7 | PA12 — GPIO / peripheral function |
| פין B8 | PA13 — GPIO / peripheral function |
| פין B9 | PA14 — GPIO / peripheral function |
| פין B10 | VSS — Ground |
| פין C1 | VDDIN — Voltage regulator input |
| פין C2 | PA15 — GPIO / peripheral function |
| פין C3 | PA16 — GPIO / peripheral function |
| פין C4 | PA17 — GPIO / peripheral function |
| פין C5 | PA18 — GPIO / peripheral function |
| פין C6 | PA19 — GPIO / peripheral function |
| פין C7 | PA20 — GPIO / peripheral function |
| פין C8 | PA21 — GPIO / peripheral function |
| פין C9 | PA22 — GPIO / peripheral function |
| פין C10 | PA23 — GPIO / peripheral function |
| פין D1 | PB0 — GPIO / peripheral function |
| פין D2 | PB1 — GPIO / peripheral function |
| פין D3 | PB2 — GPIO / peripheral function |
| פין D4 | PB3 — GPIO / peripheral function |
| פין D5 | PB4 — GPIO / peripheral function |
| פין D6 | PB5 — GPIO / peripheral function |
| פין D7 | PB6 — GPIO / peripheral function |
| פין D8 | PB7 — GPIO / peripheral function |
| פין D9 | PB8 — GPIO / peripheral function |
| פין D10 | PB9 — GPIO / peripheral function |
| פין E1 | PB10 — GPIO / peripheral function |
| פין E2 | PB11 — GPIO / peripheral function |
| פין E3 | PB12 — GPIO / peripheral function |
| פין E4 | PB13 — GPIO / peripheral function |
| פין E5 | PB14 — GPIO / peripheral function |
| פין E6 | PB15 — GPIO / peripheral function |
| פין E7 | PB16 — GPIO / peripheral function |
| פין E8 | PB17 — GPIO / peripheral function |
| פין E9 | PB18 — GPIO / peripheral function |
| פין E10 | PB19 — GPIO / peripheral function |
| פין F1 | PC0 — GPIO / peripheral function |
| פין F2 | PC1 — GPIO / peripheral function |
| פין F3 | PC2 — GPIO / peripheral function |
| פין F4 | PC3 — GPIO / peripheral function |
| פין F5 | PC4 — GPIO / peripheral function |
| פין F6 | PC5 — GPIO / peripheral function |
| פין F7 | PC6 — GPIO / peripheral function |
| פין F8 | PC7 — GPIO / peripheral function |
| פין F9 | PC8 — GPIO / peripheral function |
| פין F10 | PC9 — GPIO / peripheral function |
| פין G1 | PC10 — GPIO / peripheral function |
| פין G2 | PC11 — GPIO / peripheral function |
| פין G3 | PC12 — GPIO / peripheral function |
| פין G4 | PC13 — GPIO / peripheral function |
| פין G5 | PC14 — GPIO / peripheral function |
| פין G6 | PC15 — GPIO / peripheral function |
| פין G7 | PC16 — GPIO / peripheral function |
| פין G8 | PC17 — GPIO / peripheral function |
| פין G9 | PC18 — GPIO / peripheral function |
| פין G10 | PC19 — GPIO / peripheral function |
| פין H1 | PD0 — GPIO / peripheral function |
| פין H2 | PD1 — GPIO / peripheral function |
| פין H3 | PD2 — GPIO / peripheral function |
| פין H4 | PD3 — GPIO / peripheral function |
| פין H5 | PD4 — GPIO / peripheral function |
| פין H6 | PD5 — GPIO / peripheral function |
| פין H7 | PD6 — GPIO / peripheral function |
| פין H8 | PD7 — GPIO / peripheral function |
| פין H9 | PD8 — GPIO / peripheral function |
| פין H10 | PD9 — GPIO / peripheral function |
| פין J1 | VDDIO — I/O supply (3.3 V) |
| פין J2 | NRST — Reset input (active low) |
| פין J3 | JTMS/SWDIO — JTAG / Serial Wire Debug I/O |
| פין J4 | JTCK/SWCLK — JTAG / Serial Wire Debug clock |
| פין J5 | JTDO — JTAG data out |
| פין J6 | JTDI — JTAG data in |
| פין J7 | VDDCORE — Core supply (1.2 V) |
| פין J8 | VSS — Ground |
| פין J9 | XIN — Crystal oscillator input |
| פין J10 | XOUT — Crystal oscillator output |
יישומים טיפוסיים
ATSAM4S4CA-CU מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ATSAM4S4CA-CU — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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) |
מבדילים עיקריים
- Drop-in upgrade path to 1 MB Flash in the same TFBGA-100 footprint (לעומתATSAM4SD32CA-CU)
- FPU and DSP extensions at the same density and price tier (לעומתATSAM3S4CA-CU)
- Same-family HS-USB migration option in the same TFBGA-100 package (לעומתATSAM3U4EA-CU)
הערות תכנון
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.
מידע על תאימות
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.
