STM32L4S5QII6 - 120MHz Cortex-M4 MCU | STMicroelectronics
料号： STM32L4S5QII6 ✓ 量产中STM32L4S5QII6 概述
An ultra-low-power microcontroller is a semiconductor designed to perform control, measurement, communications, and user-interface tasks while minimizing energy consumption. Within the product hierarchy, the STM32L4S5 belongs to the STM32L4+ Series, combines the Arm Cortex-M4 processor core with embedded Flash, SRAM, security peripherals, and mixed-signal interfaces, and provides a broad platform for battery-powered and energy-conscious equipment.
Principal features include a 120 MHz Arm Cortex-M4 core with FPU, 2 MB of Flash, 640 KB of SRAM, 110 I/O, USB OTG, DFSDM, CHROM-ART, AES-256, and HASH. USB OTG supports direct USB connectivity, DFSDM permits efficient conversion of analog signals, CHROM-ART accelerates suitable graphical workloads, and the security peripherals support cryptographic protection and integrity checks in connected products.
The 132-UFBGA package provides a dense implementation for applications requiring substantial connectivity while preserving a compact board footprint. Its 110 I/O positions allow multiple external peripherals and communication interfaces to be connected without moving to a larger package. The Cortex-M4 FPU accelerates suitable floating-point operations, while the STM32L4+ family's low-power architecture supports designs that must balance active-processing performance with standby or battery operation.
Typical applications include industrial sensor controllers, USB-connected data acquisition equipment, secure access terminals, low-power gateways, compact human-interface controllers, and connected medical or measurement products. DFSDM can support compact analog measurement systems, while USB OTG simplifies direct host and device connectivity. AES-256 and HASH are useful when product data must be encrypted, authenticated, or checked for integrity.
A critical design task is assigning all 132 BGA balls, power rails, ground connections, and decoupling capacitors on the PCB. The exact pin names, alternate functions, and electrical limits must be taken from the manufacturer datasheet pin-description tables. Firmware development should also verify toolchain, debug-probe, boot, clock, and peripheral support before layout release.
This product page consolidates the STM32L4S5QII6 core specifications, verified package and peripheral details, design guidance, and same-package alternatives. The comparison information is intended to accelerate component selection and hardware planning without replacing the manufacturer datasheet for production design sign-off.
直接替换替代料： STM32L4S5QII6 ——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： STM32L4S5QII6 （相同外形与封装尺寸） ——差异在于 Flash Memory, Package, Processor Core.
STM32L4S5QII3P
✅ 直接替换📋 参考替代料（不在目录中）
STM32L4S5AII6
✅ 直接替换📋 参考替代料（不在目录中）
STM32L4R5QII6
✅ 直接替换联系询价
查看数据手册 →STM32L4S5QII6P
✅ 直接替换📋 参考替代料（不在目录中）
STM32L4R5QII6P
✅ 直接替换📋 参考替代料（不在目录中）
STM32L4S5QII6 最大额定值与电气特性
| Product Type | Ultra-low-power 32-bit microcontroller |
| Processor Core | Arm Cortex-M4 with FPU |
| Instruction Set | 32-bit RISC |
| 最大时钟频率 | 120 MHz |
| Performance | Up to 150 DMIPS |
| Flash Memory | 2 MB (2048 kbytes) |
| SRAM | 640 KB |
| Number of I/O | 110 I/O |
| 封装 | 132-UFBGA, 7 x 7 mm |
| USB Interface | USB OTG |
| Digital Filter | DFSDM |
| Graphics Accelerator | CHROM-ART |
| Hardware Encryption | AES-256 |
| Hash Engine | HASH |
| Product Series | STM32L4+ Series |
STM32L4S5QII6 132-ufbga, 7 x 7 mm 引脚配置指南
STM32L4S5QII6（132-ufbga, 7 x 7 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： STM32L4S5QII6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32L4S5QII6 适用于 6 应用s: Industrial Sensor and Condition Monitoring, USB Connected Data Acquisition, Secure Access and Authentication Terminal, Low-Power Connected Gateway, Medical and Laboratory Instrument, Compact Graphical User Interface Controller.
Industrial Sensor and Condition Monitoring
The STM32L4S5QII6 fits compact condition-monitoring equipment that must acquire analog inputs, process them locally, and communicate results over a shared interface. Its 120 MHz Arm Cortex-M4 provides headroom for signal processing, while 640 KB of SRAM supports buffering and real-time algorithms. DFSDM can implement suitable sigma-delta front ends, and the STM32L4+ low-power architecture is useful for equipment operating from limited energy budgets. The 132-UFBGA package also concentrates 110 I/O into a 7 x 7 mm footprint for compact industrial sensor nodes.
推荐
USB Connected Data Acquisition
STM32L4S5QII6 is suited to USB data-acquisition products that combine analog measurement, local processing, and a direct host connection. The integrated USB OTG interface can reduce the need for a separate USB controller, while the Cortex-M4 FPU accelerates suitable numerical work on sampled data. Its 2 MB Flash provides room for firmware, calibration tables, and USB class or protocol code, and 640 KB of SRAM allows meaningful working buffers. Verify USB impedance routing and the selected host or device role during PCB implementation.
推荐
Secure Access and Authentication Terminal
The STM32L4S5QII6 supports compact access-control terminals where credential processing, local decision logic, and encrypted communications must coexist. Dedicated AES-256 and HASH hardware accelerates cryptographic workloads, while the 120 MHz Cortex-M4 handles application logic and communications. The 2 MB Flash can hold firmware and credential-handling code, and the 132-UFBGA package leaves limited board area for compact reader or keypad designs. Use the device security and boot features to establish a protected key lifecycle and signed-firmware strategy.
推荐
Low-Power Connected Gateway
STM32L4S5QII6 is appropriate for compact gateways that aggregate sensor information and communicate through USB, serial, or other enabled interfaces. Its STM32L4+ ultra-low-power foundation supports designs expected to spend substantial time in reduced-power states, while the 120 MHz core handles protocol stacks and local processing when active. With 2 MB of Flash and 640 KB of SRAM, the MCU can consolidate application firmware and buffering on one device. The dense 132-UFBGA package also supports miniaturized edge nodes with constrained enclosure area.
推荐
Medical and Laboratory Instrument
STM32L4S5QII6 can serve as the control processor in compact medical or laboratory instruments that require deterministic embedded control, secure data handling, and flexible communication. The 120 MHz Cortex-M4 FPU supports real-time processing, DFSDM enables suitable precision analog conversion, and AES-256 and HASH support protected data paths. Its 640 KB of SRAM accommodates acquisition buffers, while 2 MB of Flash stores control code and calibration parameters. Medical classification, validation, and regulatory requirements must be assessed separately from the MCU's electrical capabilities.
推荐
Compact Graphical User Interface Controller
The STM32L4S5QII6 is useful in compact human-interface controllers where a display, input controls, and communications share one MCU. CHROM-ART provides hardware assistance for suitable graphical workloads, while the 120 MHz Cortex-M4 manages application logic and interface updates. Its 110 I/O positions can accommodate display, touch, keys, and external communications in a dense 132-UFBGA footprint. The 640 KB SRAM supports frame buffers and interface state, although display resolution and refresh demands should be checked against available memory and graphics performance before schematic approval.
推荐
推荐产品汇总
工程参考数据： STM32L4S5QII6 ——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 | STM32L4S5QII3P | STM32L4S5AII6 | STM32L4R5QII6 | STM32L4S5QII6P | STM32L4R5QII6P |
|---|---|---|---|---|---|---|
| Package | 132-UFBGA (7x7) | 132-UFBGA (7x7) | 132-UFBGA (7x7) | 132-UFBGA (7x7) | 132-UFBGA (7x7) | 132-UFBGA (7x7) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Processor Core | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU |
| Maximum Clock Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Number of I/O | 110 I/O | 110 I/O | 110 I/O | 110 I/O | 110 I/O | 110 I/O |
关键差异点
- Higher embedded memory within the same STM32L4S5 132-UFBGA family （对比 STM32L4S5AII6)
- Direct retention of the S5 mixed-signal feature set （对比 STM32L4R5QII6)
- Full security and graphics peripheral configuration （对比 STM32L4R5QII6P)
- High I/O density in a compact package （对比 STM32L4S5QII3P)
设计说明
Assign all 132 BGA balls directly from the STM32L4S5QII6 pin-description table and package drawing. Place the required power and ground decoupling capacitors close to their associated balls, preserve the manufacturer's ball-pad and via guidance, and keep high-speed clocks and USB traces short. Confirm every alternate function against the pin table because a valid BGA footprint alone does not guarantee that a replacement device has identical peripheral assignments.
Design the supply rails around the device's electrical limits from the manufacturer datasheet, including input-voltage tolerance, core-voltage sequencing, and current requirements. Provide local bulk and high-frequency decoupling at each supply ball group, and verify the regulator's transient response against the 120 MHz operating mode. Use the low-power modes only after measuring active, sleep, stop, and standby behavior under the intended clock, temperature, and peripheral load.
Treat USB, crystal, debug, and communication interfaces as separate layout domains. Route USB differential pairs as a controlled impedance pair with continuous reference planes and minimal branch stubs, place oscillator components close to their assigned pins, and keep switching or high-current paths away from sensitive analog inputs. Review crosstalk, return paths, and test-point access on a dense 132-UFBGA assembly before releasing the fabrication files.
Do not assume that all STM32L4S5 or STM32L4R5 devices are interchangeable merely because they use the same package. Check Flash size, SRAM, analog-conversion architecture, DFSDM channels, timer functions, security configuration, temperature grade, qualification, and boot behavior. When using a same-package alternative, compile for its exact part identity and repeat peripheral, timing, brownout, and low-power validation before production release.
合规信息
The manufacturer product and online-store pages confirm active status and the listed MCU configuration but do not state the requested compliance results.
