ATSAM3N2CA-CU - 48MHz Cortex-M3 128KB MCU | Microchip
MPN： ATSAM3N2CA-CU ✗ 停產ATSAM3N2CA-CU 概覽
A microcontroller is a programmable semiconductor that executes firmware, coordinates digital interfaces, reads sensors, controls actuators, and manages system timing. The ATSAM3N2CA-CU hierarchy is microcontroller -> embedded Flash MCU -> ARM Cortex-M3 MCU -> SAM3N family. Its 48 MHz operating speed provides a practical balance between processing capacity and system complexity for embedded control, while 128 KB of Flash stores application firmware and 16 KB of SRAM supports working data and stack operations.
The verified data identifies an ARM Cortex-M3 revision 2.0 core, Thumb-2 instruction support, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller. These features support efficient event handling, deterministic interrupt-driven designs, and compact embedded software. The listed operating supply range from another verified distributor result is 1.62 V to 3.6 V, although the manufacturer datasheet should be used to verify all electrical limits, pin functions, power sequencing, and peripheral characteristics before design release.
Typical uses include industrial control, sensor acquisition, communications equipment, data acquisition, embedded automation, and compact consumer or instrumentation products. The 79 available I/O positions can support digital control lines, serial interfaces, analog functions, timers, and external peripherals where the selected package pinout permits them. Compared with a discrete processor implementation, an integrated MCU consolidates memory, interrupt handling, and peripherals into one component, reducing board complexity.
The primary design consideration is exact package verification. Because the supplied web results contain conflicting 100-TFBGA and 100-TQFP descriptions, engineers should confirm the ordered package suffix, land pattern, pin assignments, exposed-pad requirements, and PCB footprint directly with Microchip documentation. This page consolidates distributor specifications, package ambiguity, sourcing information, and practical engineering cautions rather than presenting unverified assumptions as datasheet facts.
直接替換替代品，適用於 ATSAM3N2CA-CU — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAM3N2CA-CU （相同外形與佔位） — 差異在於 Package, Packaging, Core Processor, SRAM, Mounting Type.
ATSAM3U2CA-CU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM3N4CA-CU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM3N0CA-CU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM3N1CB-CUR
✅ 直接替換聯絡詢價
查看資料表 →ATSAMA5D27C-CN
✅ 直接替換聯絡詢價
查看資料表 →ATSAMA5D27C-CU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM3N2CA-CU 最大額定值與電氣特性
| Product Type | 32-bit ARM Cortex-M3 Flash microcontroller |
| Series | SAM3N |
| Processor Core | ARM Cortex-M3 revision 2.0 |
| Maximum Operating Frequency | 48 MHz |
| Program Memory Size | 128 KB (128K x 8) Flash |
| RAM Size | 16K x 8 |
| Number of I/O Pins | 79 |
| Instruction Support | Thumb-2 instruction set |
| System Timer | 24-bit SysTick counter |
| Interrupt Controller | Nested Vector Interrupt Controller |
| Supply Voltage Range | 1.62 V to 3.6 V |
| 封裝 | 100-TFBGA (9x9 mm); conflicting 100-TQFP listing requires confirmation |
| 安裝類型 | Surface mount |
| Oscillator Type | Internal |
| Packaging | Tube |
| Manufacturer | Atmel Corporation, represented by Microchip Technology |
ATSAM3N2CA-CU 100-tfbga (9x9 mm); conflicting 100-tqfp listing requires confirmation 腳位配置指南
ATSAM3N2CA-CU（100-tfbga (9x9 mm); conflicting 100-tqfp listing requires confirmation 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATSAM3N2CA-CU.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAM3N2CA-CU 適用於 6 應用s: Industrial Embedded Control, Sensor Acquisition and Data Logging, Communications Equipment, Compact Automation and Motor-Control Support, Instrumentation and Test Systems, Embedded HMI and Control Panels.
Industrial Embedded Control
The ATSAM3N2CA-CU fits industrial embedded-control modules that coordinate sensors, digital inputs, actuators, and communications. Its 48 MHz ARM Cortex-M3 core supports responsive interrupt-driven control, while 128 KB Flash and 16 KB SRAM provide room for application logic and working state. The 79 I/O count can serve multiple interfaces and control lines, but the exact functions depend on the confirmed 100-pin package pinout. Engineers should verify peripheral multiplexing and supply requirements before assigning external hardware.
推薦
Sensor Acquisition and Data Logging
Use the ATSAM3N2CA-CU in measurement systems that collect sensor data and transfer it through a communications interface. The Cortex-M3 processor handles firmware, sampling sequencing, and data processing at up to 48 MHz, while 16 KB SRAM supports buffers and acquisition state. Interrupt-driven designs can use the Nested Vector Interrupt Controller and SysTick timer for periodic acquisition. Exact analog support, communication peripherals, pin multiplexing, and ADC specifications require the manufacturer datasheet.
推薦
Communications Equipment
ATSAM3N2CA-CU is suitable as the supervisory controller in communications equipment where firmware must manage user interfaces, status indicators, configuration storage, and external communication devices. Its 32-bit architecture and 48 MHz clock support protocol handling and event-driven control, while 128 KB Flash provides storage for application code. The available evidence does not specify UART, USB, CAN, Ethernet, or other peripheral variants, so interface selection must be confirmed against the exact device documentation and package pinout.
推薦
Compact Automation and Motor-Control Support
The ATSAM3N2CA-CU can serve as a controller in compact automation equipment where timing, digital I/O, and embedded decision logic matter more than a high-end processor. Its Cortex-M3 core and SysTick support provide a foundation for deterministic task scheduling, while 79 I/O positions can expand connectivity to sensors, drivers, and status devices. Motor-drive performance cannot be inferred from the supplied data because PWM channels, timers, analog functions, and electrical limits are not specified; validate those features in the manufacturer datasheet.
推薦
Instrumentation and Test Systems
The ATSAM3N2CA-CU is suitable for instrumentation front ends that coordinate measurements, calibration, front-panel controls, and data transfer. Its 48 MHz processing rate supports moderate control-loop and protocol workloads, and its 128 KB Flash accommodates firmware modules without external program memory. For precision analog measurement, verify the exact ADC, reference, amplifier, trigger, and timing capabilities rather than assuming them from the CPU frequency. Package pinout, decoupling, grounding, and exposed-pad requirements are also essential.
推薦
Embedded HMI and Control Panels
The ATSAM3N2CA-CU can manage compact human-machine interfaces that coordinate buttons, indicators, displays, and embedded control logic. The 79 I/O count may provide enough external signal paths for a panel controller, while 128 KB Flash stores interface and application firmware. The supplied data does not confirm display controllers or specific communication peripherals, so designers should verify signal timing, pin multiplexing, voltage levels, and interface electrical requirements. Firmware should also include debounce, watchdog, and fault-handling strategies after device confirmation.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM3N2CA-CU — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAM3U2CA-CU | ATSAM3N4CA-CU | ATSAM3N0CA-CU | ATSAM3N1CB-CU | ATSAMA5D27C-CN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TFBGA (9x9) / conflicting 100-TQFP listing | 100-TFBGA (9x9) - requires confirmation | 100-TFBGA (9x9) - requires confirmation | 100-TFBGA (9x9) - requires confirmation | 100-TFBGA (9x9) - requires confirmation | 100-TFBGA (9x9) - requires confirmation |
主要差異化特點
- Verified core and memory combination (對比ATSAM3U2CA-CU)
- Interrupt-oriented embedded architecture (對比ATSAM3N4CA-CU)
- Documented I/O availability (對比ATSAM3N0CA-CU)
設計說明
Resolve the package conflict before layout. The verified sources describe ATSAM3N2CA-CU as 100-TFBGA (9x9), while another result identifies 100-TQFP; these are not interchangeable land patterns. Download the current manufacturer package drawing and pin table, confirm the exposed-pad or thermal-pad requirement, and verify every power and ground connection before placing the symbol or routing the board.
Use the verified 1.62 V to 3.6 V supply indication as a design lead, not as a substitute for the complete electrical limits. Confirm operating conditions, I/O voltage thresholds, current consumption, startup behavior, and clock requirements in the manufacturer datasheet. Place regulator and decoupling connections according to the confirmed pinout, and account for ground-current return paths in the high-pin-count package.
Treat all peripheral assignments as unverified until the exact package pin table is available. A related SAM3 part may share a family name while differing in multiplexed functions, memory, timers, communications, or pin availability. Review signal levels, alternate-function selection, interrupt routing, and startup states before assigning external buses or connectors. Prototype-level firmware testing should include reset, brownout, and unused-pin behavior.
合規資訊
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Compliance must be confirmed for the exact manufacturer, MPN, package, and production lot.
