STM32L496AEI6 - 80MHz Cortex-M4 512KB Flash MCU | STMicroelectronics
料号： STM32L496AEI6 ✓ 量产中STM32L496AEI6 概述
A microcontroller (MCU) is a single silicon device that bundles a CPU core, program memory, working RAM and a rich set of peripherals onto one package. In the power-management hierarchy an MCU belongs to the embedded processing family, sitting above simple 8-bit controllers and alongside DSP, FPGA and application-processor alternatives. The STM32L4 series is defined by ST's FlexPowerControl architecture, which keeps standby, shutdown and low-power-run currents at tens to hundreds of nanoamperes while retaining full Cortex-M4 performance.
Key differentiators of the STM32L496AEI6 include 320 nA consumption in VBAT mode for RTC and 32 backup registers, a 25 nA shutdown mode with 5 wake-up pins, and a suite of integrated connectivity: USB OTG full-speed with crystal-less support, audio interfaces (SAI, I2S, SAI), crypto accelerators (AES, HASH, RNG), and support for external switched-mode power supplies through the SMPS pin. A 12-bit ADC, dual DAC and comparators round out the analog peripherals.
Architecturally, the device combines a 4.17 MHz Cortex-M4 core with a flexible power scaler, multiple low-power modes, an LCD segment/display controller, and up to 108 I/O in the 169-ball option. Memory is organized with 320 KB of SRAM split across SRAM1/SRAM2, plus a 4 KB backup SRAM, while the 512 KB Flash supports dual-bank execution for in-field firmware updates.
Typical applications include battery-powered IoT and wearable sensor nodes, low-power industrial data loggers, USB-connected portable instruments, compact audio players and USB-C PD accessory controllers, and medical monitoring devices where standby current dominates the power budget.
When designing around this part, note that the 169-ball UFBGA footprint requires fine-pitch BGA assembly and careful via-in-pad layout; plan for a via array under the ball field to improve thermal and electrical performance, and confirm the SWD debug and bootloader access pins remain routable on a dense 7x7 mm land pattern.
This page consolidates distributor availability, package details, same-package drop-in alternatives, and practical design notes that are not found together in the original manufacturer datasheet, giving engineers a single reference for sourcing and design decisions.
直接替换替代料： STM32L496AEI6 ——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： STM32L496AEI6 （相同外形与封装尺寸） ——差异在于 Mounting Type, Package, Shutdown Mode Current, Temperature Range, VBAT Mode Current.
STM32L496AGI6
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →STM32L496AGI6P
✅ 直接替换📋 参考替代料（不在目录中）
STM32L496AGI3
✅ 直接替换📋 参考替代料（不在目录中）
STM32L496AEU6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32L496AEI6 最大额定值与电气特性
| Core | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 80 MHz |
| Core Performance | 100 DMIPS |
| Bit Width | 32-bit |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 320 KB |
| Backup SRAM | 4 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| VBAT Mode Current | 320 nA (RTC + 32 x 32-bit backup registers) |
| Shutdown Mode Current | 25 nA (5 wake-up pins) |
| Temperature Range | -40 °C to 85 °C (industrial grade, per ordering code I6) |
| 封装 | 169-UFBGA (7x7 mm) |
| Number of I/O | Up to 108 I/O |
| USB | USB OTG FS (full-speed) |
| Audio Peripherals | SAI, I2S, audio DAC support |
| Crypto / Security | AES, HASH, RNG |
| External SMPS Support | Yes |
| Analog Peripherals | 12-bit ADC, DAC, comparators |
| 安装类型 | Surface Mount (BGA) |
| RoHS 状态 | Compliant |
STM32L496AEI6 169-ufbga (7x7 mm) 引脚配置指南
STM32L496AEI6（169-ufbga (7x7 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： STM32L496AEI6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32L496AEI6 适用于 6 应用s: Battery-Powered IoT Sensor Nodes, USB-C Portable Instrumentation, Low-Power Audio Player and Amplifier, Industrial Data Logger, Medical and Wellness Monitoring Devices, Smart Home and Security Controller.
Battery-Powered IoT Sensor Nodes
The STM32L496AEI6 fits energy-limited IoT sensor nodes because it operates from a 1.71 V to 3.6 V supply and idles at 320 nA in VBAT mode while keeping the RTC and 32 backup registers alive. A node built around this MCU can wake from shutdown at 25 nA with five wake-up pins, sample a sensor, transmit over USB OTG FS or a radio, and return to sleep without draining the primary cell. The 512 KB of Flash holds an RTOS plus protocol stack and application firmware, while 320 KB of SRAM allows larger radio and crypto buffers. Compared with a low-cost 8-bit controller, the 80 MHz Cortex-M4 with FPU at 100 DMIPS allows local signal conditioning and DSP-style filtering before transmission, reducing uplink traffic and therefore radio energy.
推荐
USB-C Portable Instrumentation
Portable measurement instruments need one MCU to manage power, data acquisition, USB connectivity and a display. The STM32L496AEI6 provides USB OTG full-speed directly on chip, which removes an external USB bridge and frees board area in a compact handheld enclosure. Its 12-bit ADC and DAC support analog front ends, and the low-power shutdown and Stop modes keep the unit alive for months on a rechargeable cell. The 169-ball UFBGA (7x7 mm) package gives up to 108 I/O for display, buttons, sensors and charging while keeping the PCB small. For bench and field instruments that also need Ethernet or a galvanic-isolated data link, the same board can add an Ethernet PHY and digital isolator without competing for space in the 7x7 mm footprint.
推荐
Low-Power Audio Player and Amplifier
Portable audio products need clean power rails, efficient playback and low idle current, and the STM32L496AEI6 addresses all three. Its SAI and I2S interfaces drive external DACs and Class-D amplifiers directly, while the integrated audio DAC path and 12-bit ADC support signal monitoring. The device's external SMPS capability allows the analog and digital domains to run on separate switched rails, which lowers system noise in the audio path while keeping quiescent current low in standby. At 80 MHz the Cortex-M4 has ample headroom for MP3/AAC decoding, EQ and mixing, and the 320 KB of SRAM accommodates buffer management for streaming. Shutdown at 25 nA means the product retains full audio functionality while still meeting tight battery-life targets in the off state.
推荐
Industrial Data Logger
Industrial loggers must run for long periods from a 24 V bus-derived supply while surviving temperature swings and recording sensor data locally. The STM32L496AEI6 accepts a 1.71 V to 3.6 V rail, which makes it easy to pair with a wide-input buck or a linear regulator from a 24 V bus, and its -40 °C to 85 °C industrial grade suits enclosure temperatures. Its low-power modes cut average consumption so that a battery-backed logger can log for months, and the RTC plus 32 backup registers preserve timestamps through power cycles. The 512 KB Flash stores firmware plus buffering, and 320 KB of RAM handles sample buffers and file-system metadata. Digital isolators and an Ethernet PHY can be added on the same board for isolated field-bus and network reporting.
推荐
Medical and Wellness Monitoring Devices
Compact medical and wellness devices such as patch monitors and portable vital-sign sensors run on tiny batteries and must keep data integrity high. The STM32L496AEI6 offers a low 1.71 V minimum operating voltage so a single cell can be used directly, and the AES and HASH hardware blocks plus RNG accelerate secure data handling without loading the Cortex-M4. The 12-bit ADC and comparators suit biopotential and sensor front ends, and the 320 nA VBAT figure allows the RTC to run continuously for long-term records even when the main rail is collapsed. The 7x7 mm 169-ball UFBGA package enables a very small form factor suitable for wearable housings. For designs needing network reporting, an Ethernet PHY or isolated interface can be populated alongside the MCU on the same compact board.
推荐
Smart Home and Security Controller
A smart-home hub or security panel has to aggregate many low-speed sensors, drive relays or LEDs, and stay powered continuously. The STM32L496AEI6 provides up to 108 I/O in its 169-ball UFBGA package, so multiple GPIO, timer and PWM channels can be used for LED dimming, relay drive and sensor inputs without external expanders, while the 80 MHz Cortex-M4 handles protocol translation and local logic. USB OTG FS allows a USB-connected configuration port and firmware update path, and the crypto accelerators support secure key handling for authenticated devices. The deep sleep modes let the controller idle at microampere levels between events, which reduces standby power in installations with always-on mains and battery-backed peripherals.
推荐
推荐产品汇总
工程参考数据： STM32L496AEI6 ——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 | STM32L496AGI6 | STM32L496AGI6P | STM32L496AGI3 | STM32L496AEU6 |
|---|---|---|---|---|---|
| Package | 169-UFBGA (7x7 mm) | 169-UFBGA (7x7 mm) - same | 169-UFBGA (7x7 mm) - same | 169-UFBGA (7x7 mm) - same | 169-UFBGA (7x7 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core / Frequency | Arm Cortex-M4 with FPU, up to 80 MHz (100 DMIPS) | Arm Cortex-M4 with FPU, up to 80 MHz | Arm Cortex-M4 with FPU, up to 80 MHz | Arm Cortex-M4 with FPU, up to 80 MHz | Arm Cortex-M4 with FPU, up to 80 MHz |
| Flash Memory | 512 KB (512K x 8) | 1 MB | 1 MB | 1 MB | 512 KB (512K x 8) |
| SRAM | 320 KB (+4 KB backup SRAM) | 320 KB | 320 KB | 320 KB | 320 KB |
| Supply Voltage | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V |
| Low-Power Current | 320 nA VBAT mode; 25 nA shutdown (5 wake-up pins) | 320 nA VBAT mode; 25 nA shutdown | 320 nA VBAT mode; 25 nA shutdown | 320 nA VBAT mode; 25 nA shutdown | 320 nA VBAT mode; 25 nA shutdown |
| Temperature Grade Suffix | I6 (industrial ordering code) | I6 (industrial ordering code) | I6P variant suffix | I3 (different temperature suffix) | U6 (different temperature suffix) |
| Connectivity | USB OTG FS, SAI/I2S audio, AES/HASH/RNG, external SMPS support | USB OTG FS, SAI/I2S audio, AES/HASH/RNG, external SMPS support | USB OTG FS, SAI/I2S audio, AES/HASH/RNG, external SMPS support | USB OTG FS, SAI/I2S audio, AES/HASH/RNG, external SMPS support | USB OTG FS, SAI/I2S audio, AES/HASH/RNG, external SMPS support |
关键差异点
- Full STM32L496 feature set in the smallest 7x7 mm footprint option （对比 STM32L496AGI6)
- Ultra-low-power capability for battery-first designs （对比 STM32L496AGI3)
- On-chip USB OTG FS and crypto remove external silicon （对比 STM32L496AEU6)
- Large memory for the smallest footprint （对比 STM32L496VET3)
设计说明
The STM32L496AEI6 uses a 169-ball UFBGA (7x7 mm) with fine pitch, so layout quality dominates performance. Place the device on a solid, uninterrupted ground plane and add a via-in-pad array under the ball field to lower loop inductance and improve thermal spreading to the inner layers. Route the high-speed SWD signals (SWDIO/SWCLK) and USB D+/D- as short, tightly coupled traces with a continuous reference plane, and avoid placing test points or long stubs on these nets.
Decoupling for the STM32L496AEI6 follows the STMicroelectronics STM32L496xx datasheet recommendations: place the minimum specified ceramic capacitance directly on the VDD and VDDA pins, with additional bulk capacitance near the supply entry. Because the device supports an external SMPS configuration, keep the analog and digital supply returns low-impedance and separate the VDDA filtering network from switching regulator nodes; verify startup sequencing when an external SMPS is used, since incorrect ramp timing can trigger brown-out resets.
At 80 MHz the Cortex-M4 core dissipates noticeably more power than in low-power modes, and the 7x7 mm UFBGA has limited exposed-drain area. Estimated: with an ambient of 25 °C, a via array under the ball field and full pour on both sides, the effective thermal resistance is much better than a single-layer assembly, but sustained 80 MHz operation with USB and audio active can still push junction temperature well above ambient. Estimate junction rise as P_dissipated x R_theta_JA using the package thermal data, and enable ST's dynamic voltage scaling plus low-power run modes if thermal margin is limited.
Two mistakes are common with this part. First, firmware written for a 512 KB Flash device is often hard-coded to a fixed flash base and boot vector region; the 1 MB drop-in variants (STM32L496AGI6/AGI6P) keep the same memory map start, so code written for 512 KB runs unchanged, but linker scripts must still be checked when the image is resized. Second, the I6 ordering suffix and the AGI3/AGI6P suffixes carry different temperature grades - verify the exact suffix against your enclosure temperature range before committing to the BOM.
合规信息
RoHS compliance is stated for the STM32L496xx family on the STMicroelectronics product page. The STM32L496AEI6 is ordered in the industrial 'I' grade; AEC-Q100 automotive qualification is not indicated for this ordering code, so automotive designs should select an explicitly qualified variant. REACH, halogen-free, lead-free and conflict-minerals declarations were not present in the retrieved data.
