ATSAM3S1CB-AUR - 64MHz Cortex-M3 MCU, 64KB Flash | Microchip
料号： ATSAM3S1CB-AUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.02 | $5.02 |
| 10 | $4.8 | $48.00 |
| 100 | $4.55 | $455.00 |
| 500 | $4.3 | $2,150.00 |
| 1,000 | $4.05 | $4,050.00 |
ATSAM3S1CB-AUR 概述
A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, serial interfaces, and analog-to-digital converters. Within the embedded systems hierarchy, the SAM3S family sits in the 32-bit ARM-based microcontroller class, positioned above 8-bit MCUs like the PIC16 and ATmega families and below high-performance Cortex-M7 parts such as the SAMV71.
Key features of the ATSAM3S1CB-AUR include the energy-efficient ARM Cortex-M3 RISC core with its three-stage pipeline and Thumb-2 instruction set, 64 KB of single-cycle flash for program storage, 16 KB of SRAM for data and stacks, and a rich peripheral set typical of the SAM3S series, including USB device support, USARTs, SPI, TWI (I2C), and a multi-channel ADC that suits sensor acquisition and human-interface designs.
Architecturally, the Cortex-M3 core executes deterministic, low-latency interrupt handling through its Nested Vectored Interrupt Controller (NVIC), making the part well suited to real-time embedded control. The flash accelerator keeps the core fed at 64 MHz without wait-state penalties in typical code paths, while the SAM3S power architecture supports multiple low-power modes for battery-conscious designs.
Typical applications include industrial automation and control nodes, consumer appliance interfaces, metering and sensor-integration products, and USB-connected handheld equipment where 64 KB of code space and 64 MHz throughput are sufficient.
When designing with this device, plan decoupling capacitors close to each supply pin pair, budget the 64 KB flash carefully against bootloader and library overhead, and confirm industrial temperature requirements against the suffix code before layout freeze.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing comparative value beyond a standard catalog listing.
直接替换替代料： ATSAM3S1CB-AUR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAM3S1CB-AUR （相同外形与封装尺寸） ——差异在于 Package, Series, RoHS Status, Terminal Form.
快速对比工具——选择替代料号进行并排对比：
ATSAM3S1CA-AUR
✅ 直接替换✓ 有现货
$3.35 / 个
查看数据手册 →ATSAM3S1CB-CU
✅ 直接替换✓ 有现货
$2.82 / 个
查看数据手册 →ATSAM3S2CB-AUR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAM3S4CB-AUR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAM3S8CB-AUR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAM3S1CB-AUR 最大额定值与电气特性
| Core Processor | ARM Cortex-M3 |
| Core Size | 32-Bit |
| 最大时钟频率 | 64 MHz |
| Flash Memory Size | 64 KB (64K x 8) |
| SRAM Size | 16 KB |
| Supply Voltage Range | 1.62 V to 3.6 V |
| 封装 | 100-LQFP (14x14 mm) |
| Number of Pins / Terminals | 100 |
| Terminal Form | Gull Wing |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) |
| Series | SAM3S (ATSAM3S1) |
| Packaging | Tape & Reel (TR) |
| RoHS / Green Status | RoHS Compliant, Green (per Mouser listing) |
| Peripheral Connectivity | USB, USART, SPI, TWI (I2C) (per SAM3S family) |
ATSAM3S1CB-AUR 100-lqfp (14x14 mm) 引脚配置指南
ATSAM3S1CB-AUR（100-lqfp (14x14 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATSAM3S1CB-AUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM3S1CB-AUR 适用于 6 应用s: Industrial Automation and Control, USB-Connected Handheld Instruments, Metering and Sensor Acquisition, Consumer Appliance Interfaces, Networking and Communication Modules, Security and Surveillance Devices.
Industrial Automation and Control
The ATSAM3S1CB-AUR fits factory automation nodes such as sensor hubs, motor-adjacent control boards, and I/O modules because its 64 MHz Cortex-M3 core delivers deterministic interrupt response through the NVIC while the 64 KB flash holds protocol stacks and control loops. Its rich SAM3S peripheral set - USARTs, SPI, TWI (I2C), and a multi-channel ADC - lets one MCU aggregate field sensors and drive actuators over a 1.62V to 3.6V single supply. The industrial -40C to +85C temperature rating and RoHS Green LQFP-100 package suit standard control-cabinet assembly. Trade-off: at 64 KB flash, allocate code space carefully when combining a bootloader with communication stacks.
推荐
USB-Connected Handheld Instruments
Battery-powered and benchtop handheld instruments benefit from the SAM3S series USB device controller: the ATSAM3S1CB-AUR enumerates as a USB device so test data streams to a PC without a separate interface chip. The 64 MHz core handles USB full-speed protocol servicing plus measurement processing within its interrupt budget, while 16 KB SRAM accommodates endpoint buffers and a data capture window. Running from a 1.62V to 3.6V rail supports a single-cell Li-ion or 3.3V LDO supply architecture, and SAM3S low-power modes extend battery runtime between charges. Design consideration: keep endpoint buffer sizes within the 16 KB SRAM alongside application state.
推荐
Metering and Sensor Acquisition
The ATSAM3S1CB-AUR suits electricity, water, and process metering front ends because the SAM3S ADC provides multi-channel analog acquisition synchronized to timers, while the 64 MHz core performs scaling, filtering, and communication formatting. TWI and SPI interfaces connect precision converters and real-time clocks, and USART links handle meter-bus or RS-485 communication through external transceivers. The 64 KB flash stores calibration tables and firmware with room for an in-field update bootloader. The industrial temperature rating covers outdoor and panel installations. Trade-off: for metrology-grade accuracy, pair the MCU with a dedicated precision ADC over SPI rather than relying on the integrated converter.
推荐
Consumer Appliance Interfaces
Appliance control panels - displays, keypads, and motor-driven functions - map well onto the ATSAM3S1CB-AUR: the 100-pin LQFP supplies enough GPIO to drive segment LCDs or LED matrices and scan key matrices while the 64 MHz Cortex-M3 executes user-interface state machines with headroom. TWI connects touch controllers and EEPROM for user settings, and the USB device port enables PC-linked configuration tools on premium models. The Green RoHS LQFP-100 package flows through standard consumer reflow assembly. Consider the 64 KB flash budget when including graphics fonts and localization strings, and upsize to ATSAM3S4CB-AUR (same footprint) if content grows.
推荐
Networking and Communication Modules
The ATSAM3S1CB-AUR serves as the host controller in embedded communication modules: USARTs connect to Wi-Fi, Bluetooth, or cellular modules over AT-command interfaces, while SPI drives Ethernet controllers such as Microchip ENC/MAC-PHY devices. The 64 MHz core sustains sustained data throughput with DMA offload typical of the SAM3S DMA controller, and 64 KB flash accommodates both the application and a field-update bootloader. The 1.62V to 3.6V supply simplifies integration into 3.3V module designs. Performance note: size ring buffers in the 16 KB SRAM to absorb radio latency bursts without overflow, and reserve flash headroom for protocol library growth.
推荐
Security and Surveillance Devices
Entry-level security products - access-control panels, door controllers, and alarm hubs - leverage the ATSAM3S1CB-AUR's balance of GPIO count, serial interfaces, and processing power. The 100-pin LQFP provides the I/O to drive relays, readers (Wiegand over GPIO/timers), and status indicators, while USART/SPI link to RF receivers and GSM modules. The Cortex-M3 core runs authentication and event-logging firmware within 64 KB flash, with TWI EEPROM storing credential databases. The industrial temperature rating tolerates unconditioned enclosures. Trade-off: implement secure storage and code protection using the SAM3S flash lock regions, and validate that the 16 KB SRAM holds the credential index for your installation size.
推荐
推荐产品汇总
工程参考数据： ATSAM3S1CB-AUR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAM3S1CA-AUR | ATSAM3S1CB-CU | ATSAM3S2CB-AUR | ATSAM3S4CB-AUR |
|---|---|---|---|---|---|
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 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 | 64 KB | 64 KB | 128 KB | 256 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 |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Commercial (0C to +70C) | Industrial | Industrial |
| Packaging | Tape & Reel (R suffix) | Tape & Reel | Tray | Tape & Reel | Tape & Reel |
| Lifecycle Status | Active | Active | Active | Active | Active |
关键差异点
- Lowest memory tier of the pin-compatible SAM3S 100-LQFP family （对比 ATSAM3S4CB-AUR)
- Industrial temperature rating for harsh environments （对比 ATSAM3S1CB-CU)
- Integrated USB device controller in a 32-bit MCU class （对比 STM32F101R8T6)
设计说明
Power the ATSAM3S1CB-AUR from a clean 3.3V rail within its 1.62V to 3.6V operating range. Place a 100 nF ceramic capacitor at each VDD/VDDIO pin pair plus bulk 10 uF near the supply entry, per the SAM3S datasheet decoupling guidance. The 100-pin LQFP has multiple supply pins, and omitting any decoupling capacitor commonly manifests as sporadic core resets or USB enumeration failures at 64 MHz operation.
Lay out the 14x14 mm LQFP-100 footprint with short, direct traces for the USB differential pair (90-ohm matched if possible), and keep crystal traces under 10 mm with guard ground for the 64 MHz reference. Use a solid ground plane on layer 2 to return the ADC and high-speed currents. Follow Microchip SAM3S reference designs for the EDBG/SWD programming connector placement to keep in-circuit debug accessible during production.
Do not assume pin compatibility between B-suffix and C-suffix SAM3S variants without checking the peripheral multiplexing tables - the die differs in which function lands on each pin. Also budget the 64 KB flash conservatively: a USB stack plus bootloader can consume a large fraction of it. If firmware growth is likely, drop in the pin-compatible ATSAM3S4CB-AUR (256 KB) at design time rather than respinning later.
Estimated: a Cortex-M3 flash MCU at 64 MHz typically dissipates well under 0.5W from a 3.3V rail, so a standard LQFP-100 footprint with modest copper pour is thermally sufficient; no heatsink is needed. Confirm against the datasheet power consumption tables for your clock configuration, especially when USB and the ADC run concurrently.
合规信息
Mouser listing describes the part as LQFP, Green, industrial temperature - Green/RoHS per Microchip cataloging. REACH, halogen-free, and conflict minerals statuses not stated in provided data.