ATSAM3S1CB-AU - ARM Cortex-M3 64MHz 64KB Flash MCU | Microchip
MPN: ATSAM3S1CB-AU ✓ فعالATSAM3S1CB-AU نمای کلی
A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded-system hierarchy (MCU -> embedded processor -> system-on-chip -> semiconductor device). The SAM3S family sits within Microchip's ARM-based 32-bit MCU portfolio, positioned for cost-sensitive applications that still require the 32-bit performance and Thumb-2 instruction efficiency of the ARM Cortex-M3 architecture, revision 2.0.
Key differentiating features include the Cortex-M3 Memory Protection Unit (MPU), a 128-bit-wide Flash access path feeding a memory accelerator that sustains near-zero-wait-state execution at 64 MHz, and a rich peripheral set including USB 2.0 Full-Speed Device port, USARTs, SPI, TWI (I2C), PWM channels, a 12-bit ADC, and a DMA controller that offloads data transfers from the CPU. These peripherals reduce external component count in human-interface and connectivity designs.
Technically, the device integrates 16 KB of ROM for bootloader or code storage, a Power Management Controller (PMC) with multiple low-power modes, a Real-Time Timer, Watchdog, and an 8-channel DMA. Wide operating voltage tolerance (1.62 V to 3.6 V) allows direct battery operation in portable products. The industrial temperature variant (-40 C to +85 C) suits harsh environments.
Typical applications include industrial control panels, building automation nodes, consumer appliances with touch or LCD interfaces, USB-connected instruments, battery-powered metering, and motor control sub-systems, where 64 KB of Flash and DMA-driven peripherals provide an efficient single-chip solution.
A key design consideration is Flash density headroom: at 64 KB, the S1CB is the entry point of the SAM3S family, so pinning out the 100-pin footprint while choosing this smallest-memory variant is wise only if code size projections are comfortably below capacity; the pin-compatible S1CA/S4BA variants allow later upgrades without PCB rework.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes beyond what the manufacturer datasheet alone provides.
جایگزین‌های drop-in برای ATSAM3S1CB-AU — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای ATSAM3S1CB-AU (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Core Processor, Package, Connectivity, RoHS Status, Flash Memory.
ATSAM3S1CA-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3S1BC-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAM3S2BA-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3S4BA-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3S8BA-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3S1CB-AU حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Processor | ARM Cortex-M3 (revision 2.0) |
| Core Size | 32-bit |
| حداکثر فرکانس کلاک | 64 MHz |
| Flash Memory | 64 KB (64K x 8) |
| SRAM | 16 KB |
| ROM | 16 KB |
| Supply Voltage Range | 1.62 V to 3.6 V |
| Memory Protection Unit | Yes (MPU) |
| Instruction Set | Thumb-2 |
| Peripherals | DMA, PWM, WDT, RTC, USB |
| Connectivity | USB 2.0 Full-Speed Device, USART, SPI, TWI (I2C) |
| ADC Resolution | 12-bit |
| بسته‌بندی | 100-LQFP (14 x 14 mm) |
| نوع نصب | Surface Mount |
| دمای کاری | -40 C to +85 C (industrial) |
| Pin Compatibility | Pin-to-pin compatible with AT91SAM7S series (64-pin versions) and SAM3N1C |
| وضعیت RoHS | Compliant (Green package per Mouser listing) |
راهنمای پیکربندی پین ATSAM3S1CB-AU 100-lqfp (14 x 14 mm)
پیکربندی پین برای ATSAM3S1CB-AU (پکیج 100-lqfp (14 x 14 mm)). این IC دیجیتال شامل GPIO، رابط‌های ارتباطی (UART، SPI، I2C) و پین‌های تغذیه است. برای عملکردهای جایگزین پین و گزینه‌های پیکربندی به دیتاشیت سازنده مراجعه کنید. ضروری برای طراحی سیستم‌های نهفته و چیدمان PCB.
داده پین‌آوت تفصیلی موجود نیست برای ATSAM3S1CB-AU.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
ATSAM3S1CB-AU مناسب است برای 6 کاربردs: Industrial Control Panels, USB-Connected Instruments, Battery-Powered Metering, Building Automation Nodes, Consumer Appliance Control, Motor Control Sub-systems.
Industrial Control Panels
The ATSAM3S1CB-AU fits industrial control panels where a 32-bit MCU must manage HMI updates, serial protocol handling, and sensor polling concurrently. Its 64 MHz Cortex-M3 core with MPU provides headroom over 8-bit alternatives, while the DMA controller offloads USART and ADC transfers, keeping interrupt latency predictable for real-time control loops. The -40 C to +85 C industrial temperature grade and 1.62 V to 3.6 V supply tolerance accommodate noisy factory power conditions and wide voltage rails. The 100-pin LQFP exposes enough GPIO to drive segment LCDs, relays, and keypad matrices without port expanders. With 64 KB Flash, ladder-logic interpreters or Modus protocol stacks fit, though code growth beyond roughly 50 KB should target the pin-compatible ATSAM3S1CA-AU upgrade.
پیشنهادی
USB-Connected Instruments
Test instruments, data loggers, and bench peripherals benefit from the ATSAM3S1CB-AU integrated USB 2.0 Full-Speed Device controller, which implements CDC (virtual COM port), HID, or mass-storage classes without an external USB interface chip. Running at 12 Mbps, the USB block consumes modest bandwidth while the DMA controller streams ADC sample buffers to endpoints with minimal CPU intervention - important when sampling the 12-bit ADC at high rates. The 64 MHz core sustains signal-processing tasks between USB transactions. The single 3.3 V supply simplifies power design, and bus-powered operation is feasible given the MCU low-power modes. Designs where USB stack plus application exceeds 64 KB Flash should footprint the identical-package ATSAM3S1BC-AU or ATSAM3S1CA-AU from the start.
پیشنهادی
Battery-Powered Metering
Utility meters and battery-powered gauges exploit the ATSAM3S1CB-AU wide 1.62 V to 3.6 V supply range, which tolerates direct Li-ion or primary-cell operation as the battery discharges, and its multiple low-power modes managed by the Power Management Controller. The Real-Time Timer maintains timekeeping during sleep, while the 12-bit ADC performs energy or flow measurements with DMA-buffered results. At 64 KB Flash, a complete metering firmware with communication stack fits comfortably. The 100-pin LQFP provides abundant GPIO for pulse outputs, tamper switches, and optical comm ports. The Cortex-M3 Thumb-2 instruction set delivers the compute efficiency needed to maximize sleep time, extending battery life in 10-to-20-year deployment scenarios typical of metering products.
پیشنهادی
Building Automation Nodes
Sensor and actuator nodes in building automation use the ATSAM3S1CB-AU TWI (I2C), SPI, and USART peripherals to bridge environmental sensors to field buses. The 64 MHz Cortex-M3 handles protocol stacks and local control logic, while 16 KB SRAM buffers packet traffic. Its industrial temperature rating suits rooftop and mechanical-room installations. The DMA controller services serial peripherals so the CPU can run encryption or filtering routines concurrently. Nodes requiring OTA firmware updates should evaluate the pin-compatible ATSAM3S1CA-AU (256 KB Flash) to reserve space for a bootloader plus dual image slots - a layout decision best made at PCB design time since packages are identical. The 100-pin package also drives local LED status banks and relay outputs directly.
پیشنهادی
Consumer Appliance Control
Appliances such as coffee machines, air conditioners, and small kitchen equipment use the ATSAM3S1CB-AU to drive user interfaces - keypads, LED/LCD segments, and buzzers - while controlling motors and heaters via its PWM channels. The 64 KB Flash accommodates touch-decoding or UI firmware with room for product variations compiled from one board. The Cortex-M3 MPU adds firmware robustness, isolating safety-critical code regions. Its wide supply range and industrial temperature rating withstand appliance-internal thermal environments. The 100-pin LQFP, at 14 x 14 mm, offers a hand-solderable 0.5 mm pitch that supports both high-volume assembly and low-cost two-layer boards. Migration to feature-rich SKUs is achieved by fitting the identical-footprint 128 KB or 256 KB SAM3S variants without respin.
پیشنهادی
Motor Control Sub-systems
Small DC and stepper motor control benefits from the ATSAM3S1CB-AU PWM peripherals, 12-bit ADC for current and position feedback, and DMA-assisted sampling loops. Running the Cortex-M3 core at 64 MHz supports PI current loops at switching frequencies typical of brushed and small BLDC drives, while hardware PWM generation offloads timing-critical waveform production. The 100-pin package provides enough channels for multi-axis designs or motor plus fan control combinations. Its 1.62 V to 3.6 V operation interfaces directly with gate-driver logic inputs. Firmware including commutation and field-bus communication fits within 64 KB, though adding sensorless observers may justify the pin-compatible ATSAM3S4BA-AU with 48 KB SRAM for observer state variables and lookup tables.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATSAM3S1CB-AU — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ATSAM3S1CA-AU | ATSAM3S1BC-AU | ATSAM3S2BA-AU | ATSAM3S4BA-AU | ATSAM3S8BA-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| Package | 100-LQFP (14 x 14 mm) | 100-LQFP (14 x 14 mm) - same | 100-LQFP (14 x 14 mm) - same | 100-LQFP (14 x 14 mm) - same | 100-LQFP (14 x 14 mm) - same | 100-LQFP (14 x 14 mm) - same |
| Core / Clock | ARM Cortex-M3 @ 64 MHz | ARM Cortex-M3 @ 64 MHz | ARM Cortex-M3 @ 64 MHz | ARM Cortex-M3 @ 64 MHz | ARM Cortex-M3 @ 64 MHz | ARM Cortex-M3 @ 64 MHz |
| Flash Memory | 64 KB | 256 KB | 128 KB | 128 KB | 256 KB | 512 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 |
| USB | 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 |
| Temperature Range | -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 |
تفاوت‌های کلیدی
- Lowest-cost entry point of the 100-pin SAM3S family (در مقابلATSAM3S1CA-AU)
- Pin-to-pin compatibility with legacy AT91SAM7S designs (در مقابلAT91SAM7S64)
- 128-bit wide Flash access with memory accelerator (در مقابلATSAM3S8BA-AU)
یادداشت‌های طراحی
Estimated: the SAM3S core and I/O rails both derive from the 1.62 V to 3.6 V supply via the on-chip regulator; budget roughly 40-60 mA of active-mode current at 64 MHz (final figure per the manufacturer datasheet current-consumption tables) plus peripheral loads such as USB PHY. Use a 3.3 V LDO with at least 150 mA headroom and place 0.1 uF decoupling at every VDDIO/VDDCORE pin pair plus bulk 10 uF near the regulator. The wide 1.62 V floor allows direct Li-ion connection, but verify brown-out detector thresholds are enabled for battery sag conditions.
The 100-pin LQFP at 0.5 mm pitch requires solder-mask-defined pads per the Microchip LQFP land-pattern recommendation. Connect the exposed EPAD-type ground structure through a solid ground plane with multiple thermal vias. Keep the USB D+/D- pair routed as 90-ohm differential impedance traces, length-matched within 1 mm, with the 1.5 k pull-up on D+ handled internally by the transceiver. Reserve the JTAG pins (TDI/TDO/TMS/TCK) on test points for production programming via SAM-ICE or a Cortex-M3 SWD/JTAG debugger.
Two frequent mistakes with the SAM3S family: first, exceeding 64 KB of linked code - the linker will fail only at final build, so track Flash utilization from the first prototype and consider foot-printing the pin-identical ATSAM3S1CA-AU if utilization passes 50 KB. Second, the pins are not 5 V tolerant: interfacing 5 V logic or sensor outputs requires level shifting or resistive dividers, since VDDIO max is 3.6 V. Also verify the memory accelerator is enabled in the PMC/EEFC configuration, as execution from Flash without it incurs wait states at 64 MHz.
اطلاعات انطباق
Mouser listing describes package as LQFP, Green, Industrial Temperature, MRL - indicating lead-free, halogen-free green packaging and RoHS compliance. REACH and conflict-minerals status not stated in provided data.