ATSAM4S4BA-UUR - 120MHz Cortex-M4 MCU 256KB Flash WLCSP-64
料号： ATSAM4S4BA-UUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.05 | $50.50 |
| 100 | $4.51 | $451.00 |
| 500 | $4.06 | $2,030.00 |
| 1,000 | $3.65 | $3,650.00 |
ATSAM4S4BA-UUR 概述
A microcontroller (MCU) is a single-chip integrated circuit combining a processor core, memory, and peripherals to form a complete embedded control system. Within the MCU hierarchy, the SAM4S family sits in the general-purpose 32-bit flash MCU class, and belongs to the ARM Cortex-M architecture lineage: Cortex-M4 -> ARMv7E-M -> 32-bit RISC microcontroller -> system-on-chip.
Key features include the Cortex-M4 core with hardware DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), dual-bank Flash enabling safe in-application programming, and a supply range of 1.62V to 3.6V (nominal 1.2V/3.3V system operation). The WLCSPGREEN package is RoHS-green, making the device well suited to extreme miniaturization where board area is the dominant constraint.
Technically, the ATSAM4S4BA-UUR integrates a 12-bit ADC, UART, SPI and TWI serial interfaces typical of the SAM4S family, and benefits from Microchip's peripheral set including DMA channels for low CPU-load data movement. Pin-to-pin compatibility across the SAM4S series (and with SAM4N, SAM3S, SAM3N, SAM7S in 64-pin versions) allows flash-size migration without PCB redesign.
Typical applications include compact portable and battery-powered devices, IoT sensor nodes, industrial control modules, and consumer electronics where a small 64-ball wafer-level footprint at up to 120 MHz is required.
A key design consideration: the WLCSP package exposes balls on a ~0.4-0.5 mm pitch; rework requires experienced assembly and the PCB must follow Microchip's ball-mapping layout guidelines. Confirm exact ball pitch and outline in the manufacturer datasheet before layout.
This page synthesizes verified distributor data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： ATSAM4S4BA-UUR ——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： ATSAM4S4BA-UUR （相同外形与封装尺寸） ——差异在于 Package, Core Size, Instruction Set, Packaging, Flash Features.
快速对比工具——选择替代料号进行并排对比：
ATSAM4S16BA-UUR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.6 / 个
查看数据手册 →ATSAM4S2BB-UUR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.38 / 个
查看数据手册 →ATSAM4S4BA-UUR 最大额定值与电气特性
| Core | ARM Cortex-M4 |
| Core Size | 32-bit |
| 最大时钟频率 | 120 MHz |
| Flash Memory Size | 256 KB |
| SRAM Size | 64 KB |
| Instruction Set | Thumb-2 with DSP instructions |
| Memory Protection | MPU (Memory Protection Unit) |
| Supply Voltage Range | 1.62 V to 3.6 V |
| Operating Voltage Class | 1.2 V / 3.3 V |
| Flash Features | Dual-bank, ECC, Security Bit, Lock Bits |
| 封装 | WLCSP-64 (64-UFBGA / WLCSPGREEN) |
| Number of Terminals | 64 balls |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) |
| Temperature Grade | Industrial |
| Packaging | Tape & Reel (T/R) |
| Series | SAM4S |
ATSAM4S4BA-UUR wlcsp-64 (64-ufbga / wlcspgreen) 引脚配置指南
ATSAM4S4BA-UUR（wlcsp-64 (64-ufbga / wlcspgreen) 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： ATSAM4S4BA-UUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4S4BA-UUR 适用于 6 应用s: Portable and Wearable Devices, IoT Sensor Nodes, Industrial Control Modules, Consumer Electronics, Motor Control and Digital Power, Data Logging and Security Devices.
Portable and Wearable Devices
The ATSAM4S4BA-UUR's 64-ball WLCSP is a wafer-level chip-scale package whose footprint approaches the die size itself, making it one of the most space-efficient ways to deploy a 120 MHz Cortex-M4 with 256 KB Flash and 64 KB SRAM. In wearables and portable instruments where every square millimeter of PCB matters, this part integrates compute, memory, and rich peripherals without a larger QFP footprint. Its 1.62V to 3.6V supply range allows direct operation from a Li-ion cell through an LDO, and the SAM4S family's low-power modes stretch battery life. Designers should budget for WLCSP assembly capability, as ball-level rework is not field-serviceable.
推荐
IoT Sensor Nodes
IoT nodes need local signal processing, multiple serial interfaces, and compact packaging - the ATSAM4S4BA-UUR delivers all three. The Cortex-M4 core at 120 MHz with DSP instructions handles filtering, FFT-based sensor analytics, and protocol stacks, while 256 KB Flash with dual-bank organization supports secure over-the-air firmware updates with a fallback bank. ECC on Flash improves data retention reliability in always-on nodes. Multiple UART/SPI/TWI-class peripherals connect radios and sensors with DMA offloading the CPU. The industrial -40C to +85C rating suits outdoor enclosures. Use the WLCSP-64 footprint with an RF module placed nearby to keep the antenna feed clean.
推荐
Industrial Control Modules
In industrial automation, the ATSAM4S4BA-UUR provides a 120 MHz Cortex-M4 with MPU (Memory Protection Unit) for robust firmware partitioning, and Flash ECC plus Security Bit and Lock Bits for code protection on fielded equipment. The industrial -40C to +85C temperature grade and 1.62V-3.6V supply tolerance accommodate noisy 24V-system environments after a standard buck or LDO front end. Its WLCSP-64 footprint suits dense DIN-rail and sensor-head modules where conventional 64-pin QFPs are too large. Designers should verify creepage/clearance around the fine-pitch balls against their insulation standards and use conformal coating in harsh atmospheres.
推荐
Consumer Electronics
Consumer products such as small appliances, toys, personal care devices, and accessories benefit from the ATSAM4S4BA-UUR's combination of high clock speed (120 MHz), adequate memory (256 KB Flash / 64 KB SRAM), and an ultra-small green WLCSP package that reduces PCB cost in high-volume builds. The WLCSPGREEN designation supports lead-free, halogen-restricted manufacturing required by major consumer brands. Because consumer BOMs are cost-sensitive, the pin-compatible ATSAM4S2BB-UUR offers a downward migration path when firmware fits in 128 KB, while ATSAM4S16BA-UUR accommodates feature growth - all on the same PCB footprint, protecting tooling investment.
推荐
Motor Control and Digital Power
The Cortex-M4's hardware DSP instructions (single-cycle MAC, saturating arithmetic) make the ATSAM4S4BA-UUR effective for field-oriented control and digital power loops at 120 MHz. The MPU separates the control ISR domain from communication firmware, improving fault containment in motor drives. SAM4S peripherals with DMA handle PWM-adjacent ADC sampling with low jitter. The 1.62V-3.6V digital supply is isolated from gate-driver supplies by standard level-shifting isolation. Note the core lacks the optional Cortex-M4 FPU, so use Microchip's fixed-point motor-control libraries for the highest loop rates in the WLCSP-64 footprint.
推荐
Data Logging and Security Devices
Security-critical and tamper-aware logging devices benefit from the ATSAM4S4BA-UUR's Flash Security Bit and Lock Bits, which prevent external readout of proprietary firmware, and ECC-protected Flash that guards against bit corruption in long-deployment recorders. The 120 MHz Cortex-M4 performs real-time encryption and compression on 64 KB of SRAM working data, while dual-bank Flash enables authenticated, rollback-capable field updates. The WLCSP-64 package supports conformally sealed, miniature enclosures typical of asset trackers and secure loggers rated -40C to +85C. Validate the Security Bit behavior against your threat model using Microchip's SAM4S documentation.
推荐
推荐产品汇总
工程参考数据： ATSAM4S4BA-UUR ——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 | ATSAM4S16BA-UUR | ATSAM4S2BB-UUR |
|---|---|---|---|
| Package | WLCSP-64 | WLCSP-64 - same | WLCSP-64 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Clock | ARM Cortex-M4 / 120 MHz | ARM Cortex-M4 / 120 MHz | ARM Cortex-M4 / 120 MHz |
| Flash Memory | 256 KB | 1024 KB | 128 KB |
| Supply Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
| Dual-bank Flash / ECC | Yes | Yes | Yes |
关键差异点
- Balanced 256 KB Flash / 64 KB SRAM density （对比 ATSAM4S2BB-UUR)
- Lower cost than max-density variant （对比 ATSAM4S16BA-UUR)
- Flash ECC and Security Bit （对比 Competing Cortex-M4 MCUs)
设计说明
The WLCSP-64 uses sub-0.5 mm ball pitch; route breakout with via-in-pad or microvias and follow Microchip's ball-map fan-out guidance in the SAM4S datasheet 60001419B. Keep decoupling capacitors on the opposite side directly under the die, one 100 nF per supply ball plus one bulk capacitor. Specify NSMD pads and follow the solder-mask opening recommendations to ensure reliable ball collapse during reflow.
Supply the device from a 3.3V rail within the 1.62V-3.6V datasheet range. Estimated: at moderate active current draw, a linear regulator dropping 5V to 3.3V at 50 mA dissipates about 85 mW - acceptable, but for battery designs prefer a buck converter to extend runtime. Verify VDDCORE/VDDIO sequencing requirements and use the enable-controlled regulator outputs recommended in the SAM4S datasheet power-supply section.
WLCSP packages cannot be hand-soldered or field-reworked. Always validate firmware on a QFP sibling such as ATSAM4S4AB-AN before committing to the WLCSP-64 assembly, since the SAM4S family is pin-to-pin and code-compatible. Also confirm the exact SAM4S4B peripheral allocation for the -UUR ball map; do not assume QFP pin functions map 1:1 to WLCSP balls without checking the datasheet ball-out table.
合规信息
Package is designated WLCSPGREEN per Mouser, indicating green/RoHS-compliant lead-free wafer-level packaging. Formal REACH and conflict-minerals statements not present in provided data.
