STMicroelectronics

STM32L471ZGT6 - 1MB Flash 80MHz Cortex-M4 MCU | STMicroelectronics

MPN: STM32L471ZGT6 ✓ Active
In Stock Ships in 1-3 business days
1.71 V to 3.6 V Vdss LQFP-144 (20 x 20 mm) Package 80 MHz Speed 1 MB Memory
From $7.49 USD / Unit
MOQ: 1 |
Price updated: 2026-10-10
Volume Pricing
Qty Unit Price Extended
1 $12.47 $12.47
10 $11.22 $112.20
100 $9.98 $998.00
500 $8.74 $4,370.00
1,000 $7.49 $7,490.00
ℹ️ All prices are in USD

STM32L471ZGT6 Overview

The STMicroelectronics STM32L471ZGT6 is an ultra-low-power 32-bit microcontroller based on the high-performance Arm Cortex-M4 RISC core with FPU, operating at frequencies up to 80 MHz, packaged in a 144-pin LQFP. The device integrates 1 MB of Flash, 128 KB of SRAM, and a rich peripheral set including CAN, USB, multiple UART/SPI/I2C interfaces, 12-bit ADCs, and a real-time clock for energy-sensitive embedded control applications.

An ultra-low-power microcontroller (MCU) is a class of microprocessor that minimizes active and standby current consumption through techniques such as voltage scaling, multiple low-power operating modes, peripheral clock gating, and integrated DC-DC converters. The STM32L4 family extends this concept with the Cortex-M4 core plus DSP instructions and a single-precision floating-point unit, enabling digital signal processing alongside efficient power management. Within the broader taxonomy, the STM32L471ZGT6 sits in the hierarchy MCU -> Arm Cortex-M microcontroller -> ultra-low-power MCU -> power management IC ecosystem.

Key features include a 1.8 V to 3.6 V supply range, batch acquisition mode for ADC, multiple low-power modes (Stop, Standby, Shutdown) drawing as little as a few hundred nanoamperes with RTC retention, a built-in 12-bit 5 Msps ADC, two DAC channels, USB 2.0 Full-Speed device/host, three I2C, three SPI, three USART plus UART, two CAN 2.0B, SDMMC, and a Crypt/AES-256 hardware accelerator. The 144-pin LQFP package supports ample GPIO for industrial control panels and sensor hubs.

The STM32L471 uses a Cortex-M4 core with FPU and DSP extensions, providing 1.25 DMIPS/MHz and a CoreMark score in the hundreds, balancing DSP capability with extreme energy efficiency. The integrated LDO(Dragon) voltage regulator and switchable DC-DC buck converter allow dynamic trade-off between quiescent current and peak performance.

Typical applications include industrial sensor nodes, wearable medical monitors, smart metering, battery-powered IoT gateways, and motor control subsystems where extended battery life and deterministic real-time response are simultaneously required. The 1 MB Flash enables on-board firmware with secure bootloaders, OTA stacks, and rich protocol libraries.

When designing, always verify the supply decoupling network (1uF + 100nF + 4.7uF bulk) per ST AN4325 reference design and consider the 32 kHz LSE crystal selection for RTC accuracy. The 144-LQFP package simplifies layout but requires thermal relief for applications pushing >70% CPU duty.

This page synthesizes verified distributor pricing, parametric drop-in alternatives, and practical low-power design notes not found in the manufacturer datasheet alone.

Drop-in alternatives for STM32L471ZGT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Variants in this series

Same-series models that are drop-in compatible with STM32L471ZGT6 (same form factor and footprint) — differing in ADC, Package, SRAM, Core Architecture, Operating Temperature Range.

STMicroelectronics
ADC: 1 x 12-bit, 5 Msps (up to 16 channels)
Package: 64-LQFP (10x10 mm)
SRAM: 40 KB
Compare with STM32L471ZGT6 →
STMicroelectronics
ADC: 12-bit, 5 Msps
Package: 64-pin LQFP (TRAY/REEL)
SRAM: 64 KB
Compare with STM32L471ZGT6 →
STMicroelectronics
Package: 64-LQFP (10x10 mm)
SRAM: 160 KB
Core Architecture: Arm Cortex-M4F with FPU and DSP
Compare with STM32L471ZGT6 →
STMicroelectronics
ADC: 3x 12-bit, 5 Msps
Package: 100-LQFP (14x14 mm)
Core Architecture: ARM Cortex-M4 with FPU (32-bit)
Compare with STM32L471ZGT6 →
STMicroelectronics
ADC: 3x 12-bit, up to 5 Msps
Package: 64-LQFP (10x10 mm)
Core Architecture: ARM Cortex-M4 with FPU and DSP instructions
Compare with STM32L471ZGT6 →
STMicroelectronics
ADC: 2x 12-bit, 5 Msps
Package: 100-pin LQFP (14x14 mm)
SRAM: 640 KB
Compare with STM32L471ZGT6 →

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32L471RGT6

✅ Drop-In
📦 LQFP-64
same die, 64-pin LQFP (vs 144-LQFP), GPIO count reduced from 114 to 51, pin-compatible software but PCB footprint differs

📋 Reference alternative (not in catalog)

STM32L471VGT6

✅ Drop-In
📦 LQFP-100
same die, 100-pin LQFP (vs 144-LQFP), GPIO count 82, fewer package pins, identical firmware

📋 Reference alternative (not in catalog)

STM32L471QGI6

✅ Drop-In
📦 UFBGA-132
same die, BGA-132 (vs LQFP-144), industrial -40 to 85C, identical firmware, BGA footprint rework

📋 Reference alternative (not in catalog)

STM32L452RET6P

✅ Drop-In
STMicroelectronics
📦 LQFP-64
Arm Cortex-M4F with FPU and DSP · 80 MHz · 100 DMIPS · 512 KB · 160 KB · 1.71 V to 3.6 V · -40 C to +85 C or -40 C to +125 C (grade dependent) · 22 nA (5 wakeup pins)

✓ In Stock

$5.62 / Unit

View Datasheet →

STM32L443RCT6

✅ Drop-In
STMicroelectronics
📦 LQFP-64
Arm Cortex-M4 with FPU and DSP instructions · 80 MHz · 100 DMIPS · 256 KB · 64 KB · 1.71 V to 3.6 V · 64-pin LQFP (TRAY/REEL) · -40C to +85C

✓ In Stock

$5.1 / Unit

View Datasheet →

STM32L412RBT6P

✅ Drop-In
STMicroelectronics
📦 LQFP-64
Arm Cortex-M4 with FPU (single precision) · 80 MHz (100 DMIPS) · 128 KB (single bank) · 40 KB · 1.71 V to 3.6 V · -40 C to +85 C · 64-LQFP (10x10 mm) · 64

✓ In Stock

$3.35 / Unit

View Datasheet →

STM32L471ZGT6 Maximum Ratings & Electrical Characteristics

Core Arm Cortex-M4 with FPU and DSP
Maximum Clock Frequency 80 MHz
Flash Memory 1 MB
SRAM 128 KB
Operating Voltage Range 1.71 V to 3.6 V
Package LQFP-144 (20 x 20 mm)
GPIO Count Up to 114
ADC 3 x 12-bit, 5 Msps
DAC 2 x 12-bit
CAN 2 x CAN 2.0B
USB USB 2.0 Full-Speed device/host
UART/USART 3 x USART + 2 x UART
SPI 3 x SPI
I2C 3 x I2C Fast-mode Plus
Operating Temperature Range -40C to +85C
Cryptography AES-256 hardware accelerator
RoHS Status Compliant

STM32L471ZGT6 Pin Configuration

LQFP-144 Package Pinout Diagram LQFP-144 20x20mm, P0.5mm, JEDEC MS-026. 1 36 LQFP-144
Pin 1 PE02 — GPIO PE2, EXTI line 2
Pin 2 PE03 — GPIO PE3, EXTI line 3
Pin 3 PE04 — GPIO PE4, TRACEDATA0
Pin 4 PE05 — GPIO PE5, TRACEDATA1
Pin 5 PE06 — GPIO PE6, WKUP3, TIM1_BKIN2
Pin 6 VBAT — Battery supply for RTC and backup registers
Pin 7 PC13 — GPIO PC13, anti-tamper, WKUP2, RTC_OUT
Pin 8 PC14 — GPIO PC14, OSC32_IN
Pin 9 PC15 — GPIO PC15, OSC32_OUT
Pin 10 VSS — Ground
Pin 11 VDD — Digital supply voltage
Pin 12 PH00 — GPIO PH0, OSC_IN
Pin 13 PH01 — GPIO PH1, OSC_OUT
Pin 14 NRST — Reset input, active low
Pin 15 VSSA — Analog ground
Pin 16 VDDA — Analog supply voltage
Pin 17 PA00 — GPIO PA0, WKUP1, UART4_TX, TIM2_CH1
Pin 18 PA01 — GPIO PA1, UART4_RX, TIM2_CH2, ADC_IN1
Pin 19 PA02 — GPIO PA2, USART2_TX, TIM2_CH3, ADC_IN2
Pin 20 PA03 — GPIO PA3, USART2_RX, TIM2_CH4, ADC_IN3
Pin 21 VSS — Ground
Pin 22 VDD — Digital supply voltage
Pin 23 PA04 — GPIO PA4, SPI1_NSS, USART2_CK, ADC_IN4, DAC_OUT1
Pin 24 PA05 — GPIO PA5, SPI1_SCK, ADC_IN5, DAC_OUT2
Pin 25 PA06 — GPIO PA6, SPI1_MISO, TIM3_CH1, ADC_IN6
Pin 26 PA07 — GPIO PA7, SPI1_MOSI, TIM3_CH2, ADC_IN7
Pin 27 PA08 — GPIO PA8, TIM1_CH1, USART1_CK, MCO
Pin 28 PA09 — GPIO PA9, TIM1_CH2, USART1_TX
Pin 29 PA10 — GPIO PA10, TIM1_CH3, USART1_RX
Pin 30 PA11 — GPIO PA11, TIM1_CH4, USB_DM
Pin 31 PA12 — GPIO PA12, TIM1_ETR, USB_DP
Pin 32 PA13 — GPIO PA13, SWDIO, JTMS
Pin 33 VSS — Ground
Pin 34 VDD — Digital supply voltage
Pin 35 PA14 — GPIO PA14, SWCLK, JTCK
Pin 36 PA15 — GPIO PA15, JTDI, TIM2_CH1
Pin 37 PB00 — GPIO PB0, TIM3_CH3, ADC_IN8
Pin 38 PB01 — GPIO PB1, TIM3_CH4, ADC_IN9
Pin 39 PB02 — GPIO PB2, BOOT1
Pin 40 PB03 — GPIO PB3, JTDO, TIM2_CH2, SPI1_SCK
Pin 41 PB04 — GPIO PB4, JTRST, TIM3_CH1, SPI1_MISO
Pin 42 PB05 — GPIO PB5, I2C1_SMBAI, TIM3_CH2, SPI1_MOSI
Pin 43 PB06 — GPIO PB6, I2C1_SCL, USART1_TX, TIM4_CH1
Pin 44 PB07 — GPIO PB7, I2C1_SDA, USART1_RX, TIM4_CH2
Pin 45 BOOT0 — Boot mode selection
Pin 46 PB08 — GPIO PB8, I2C1_SCL, TIM4_CH3, SDMMC1_D4
Pin 47 PB09 — GPIO PB9, I2C1_SDA, TIM4_CH4, SDMMC1_D5
Pin 48 VSS — Ground
Pin 49 VDD — Digital supply voltage
Pin 50 PB10 — GPIO PB10, I2C2_SCL, USART3_TX, TIM2_CH3
Pin 51 PB11 — GPIO PB11, I2C2_SDA, USART3_RX, TIM2_CH4
Pin 52 PB12 — GPIO PB12, SPI2_NSS, I2S2_WS, TIM1_BKIN
Pin 53 PB13 — GPIO PB13, SPI2_SCK, I2S2_CK, USART3_CK
Pin 54 PB14 — GPIO PB14, SPI2_MISO, TIM1_CH1, SDMMC1_D0
Pin 55 PB15 — GPIO PB15, SPI2_MOSI, TIM1_CH2, SDMMC1_D1
Pin 56 PD00 — GPIO PD0, SPI2_NSS, CAN1_RX, TIM4_CH1
Pin 57 PD01 — GPIO PD1, SPI2_SCK, CAN1_TX, TIM4_CH2
Pin 58 PD02 — GPIO PD2, USART3_RX, TIM3_ETR, SDMMC1_CMD
Pin 59 PD03 — GPIO PD3, USART2_CTS, SPI2_MISO
Pin 60 PD04 — GPIO PD4, USART2_RTS, SPI2_MOSI
Pin 61 PD05 — GPIO PD5, USART2_TX
Pin 62 PD06 — GPIO PD6, USART2_RX, SDMMC1_CK
Pin 63 PD07 — GPIO PD7, USART2_CK, SDMMC1_CMD
Pin 64 VSS — Ground
Pin 65 VDD — Digital supply voltage
Pin 66 PD08 — GPIO PD8, USART3_TX, SDMMC1_D0
Pin 67 PD09 — GPIO PD9, USART3_RX, SDMMC1_D1
Pin 68 PD10 — GPIO PD10, USART3_CK, SDMMC1_D2
Pin 69 PD11 — GPIO PD11, USART3_CTS, SDMMC1_D3
Pin 70 PD12 — GPIO PD12, TIM4_CH1, USART3_RTS
Pin 71 PD13 — GPIO PD13, TIM4_CH2
Pin 72 PD14 — GPIO PD14, TIM4_CH3, UART8_CTS
Pin 73 PD15 — GPIO PD15, TIM4_CH4, UART8_RTS
Pin 74 VSS — Ground
Pin 75 VDD — Digital supply voltage
Pin 76 PE00 — GPIO PE0, TIM4_ETR, UART8_TX
Pin 77 PE01 — GPIO PE1, UART8_RX
Pin 78 PE07 — GPIO PE7, TIM1_ETR
Pin 79 PE08 — GPIO PE8, TIM1_CH1N
Pin 80 PE09 — GPIO PE9, TIM1_CH1
Pin 81 VSS — Ground
Pin 82 VDD — Digital supply voltage
Pin 83 PE10 — GPIO PE10, TIM1_CH2N
Pin 84 PE11 — GPIO PE11, TIM1_CH2
Pin 85 PE12 — GPIO PE12, TIM1_CH3N, SPI1_NSS
Pin 86 PE13 — GPIO PE13, TIM1_CH3, SPI1_SCK
Pin 87 PE14 — GPIO PE14, TIM1_CH4, SPI1_MISO
Pin 88 PE15 — GPIO PE15, TIM1_BKIN, SPI1_MOSI
Pin 89 PB10 — GPIO PB10 (alt)
Pin 90 PB11 — GPIO PB11 (alt)
Pin 91 VSS — Ground
Pin 92 VDD — Digital supply voltage
Pin 93 PC00 — GPIO PC0, ADC_IN10, TIM1_CH1
Pin 94 PC01 — GPIO PC1, ADC_IN11, TIM1_CH2
Pin 95 PC02 — GPIO PC2, ADC_IN12, SPI2_MISO
Pin 96 PC03 — GPIO PC3, ADC_IN13, SPI2_MOSI
Pin 97 VSSA — Analog ground
Pin 98 VREF+ — ADC reference voltage high
Pin 99 VDDA — Analog supply voltage
Pin 100 VREF- — ADC reference voltage low
Pin 101 PH00 — GPIO PH0, OSC_IN
Pin 102 PH01 — GPIO PH1, OSC_OUT
Pin 103 PH02 — GPIO PH2
Pin 104 PA08 — GPIO PA8 (alt)
Pin 105 PA09 — GPIO PA9 (alt)
Pin 106 VSS — Ground
Pin 107 VDD — Digital supply voltage
Pin 108 PA10 — GPIO PA10 (alt)
Pin 109 PA11 — GPIO PA11 (alt)
Pin 110 PA12 — GPIO PA12 (alt)
Pin 111 PA13 — GPIO PA13 (alt)
Pin 112 PA14 — GPIO PA14 (alt)
Pin 113 PA15 — GPIO PA15 (alt)
Pin 114 PC04 — GPIO PC4, ADC_IN14
Pin 115 PC05 — GPIO PC5, ADC_IN15
Pin 116 PB00 — GPIO PB0 (alt)
Pin 117 PB01 — GPIO PB1 (alt)
Pin 118 PB02 — GPIO PB2 (alt)
Pin 119 VSS — Ground
Pin 120 VDD — Digital supply voltage
Pin 121 PB12 — GPIO PB12 (alt)
Pin 122 PB13 — GPIO PB13 (alt)
Pin 123 PB14 — GPIO PB14 (alt)
Pin 124 PB15 — GPIO PB15 (alt)
Pin 125 PC06 — GPIO PC6, TIM3_CH1
Pin 126 PC07 — GPIO PC7, TIM3_CH2
Pin 127 PC08 — GPIO PC8, TIM3_CH3, SDMMC1_D0
Pin 128 PC09 — GPIO PC9, TIM3_CH4, SDMMC1_D1
Pin 129 PA00 — GPIO PA0 (alt)
Pin 130 PA01 — GPIO PA1 (alt)
Pin 131 VSS — Ground
Pin 132 VDD — Digital supply voltage
Pin 133 PA02 — GPIO PA2 (alt)
Pin 134 PA03 — GPIO PA3 (alt)
Pin 135 PA04 — GPIO PA4 (alt)
Pin 136 PA05 — GPIO PA5 (alt)
Pin 137 PA06 — GPIO PA6 (alt)
Pin 138 PA07 — GPIO PA7 (alt)
Pin 139 PC10 — GPIO PC10, USART3_TX, I2S3_CK
Pin 140 PC11 — GPIO PC11, USART3_RX, I2S3_SD
Pin 141 PC12 — GPIO PC12, USART3_CK, I2S3_WS
Pin 142 PD00 — GPIO PD0 (alt)
Pin 143 PD01 — GPIO PD1 (alt)
Pin 144 VSS — Ground (bottom pad exposed thermal)

Typical Applications

STM32L471ZGT6 is suitable for 6 applications: Industrial Sensor Hubs and IoT Gateways, Wearable Medical and Health Monitors, Smart Metering and Energy Monitoring, Low-Power Motor Control and Field-Oriented Control (FOC), Portable Consumer Devices and Battery IoT, Aerospace Telemetry and UAV Flight Controllers.

🏭

Industrial Sensor Hubs and IoT Gateways

The STM32L471ZGT6 is well-suited for industrial sensor hubs and battery-powered IoT gateways where energy autonomy, multiple industrial buses, and on-board protocol stacks must coexist. Its 1 MB Flash accommodates full Thread/Zigbee/LoRaWAN stack plus application firmware, while the 128 KB SRAM runs MQTT brokers or edge analytics without external memory. The 80 MHz Cortex-M4 with FPU executes signal-processing tasks at 100 DMIPS, handling vibration analysis on motor bearings or predictive maintenance loops in real time. Two CAN 2.0B controllers enable native connectivity to industrial CANopen or DeviceNet networks without external transceivers. According to ST datasheet, Stop2 mode at 1.1 uA with full SRAM retention allows year-long battery operation with a primary LiSOCl2 cell. Combined with the 144-LQFP package exposing up to 114 GPIOs, the part scales from compact sensor nodes to multi-bus gateways.

💊

Wearable Medical and Health Monitors

For wearable medical monitors, the STM32L471ZGT6 offers a unique blend of DSP-grade Cortex-M4 compute with extreme energy efficiency. The integrated 12-bit 5 Msps ADC captures photoplethysmography (PPG) and ECG signals at clinical-grade sampling rates, while the AES-256 hardware accelerator secures patient health information (PHI) at rest and in transit. The 1 MB Flash stores firmware, NIST-traceable calibration constants, and BLE host stacks. Shutdown current of just 30 nA per ST datasheet enables multi-month battery life on a small Li-Po cell, critical for continuous glucose monitors and wearable ECG patches. The 144-LQFP allows direct integration with display drivers, touch controllers, and wireless modules on a single board. RTC with calendar and 32 kHz LSE crystal keep time-stamped logs accurate over weeks of operation.

⚡

Smart Metering and Energy Monitoring

The STM32L471ZGT6 is engineered for smart electricity, gas, and water metering applications where 10+ year battery life and regulatory metrology accuracy must coexist. Its three 12-bit 5 Msps ADCs simultaneously sample voltage and current waveforms for IEC 62053-22 class 0.5S accurate active/reactive energy measurement, while the Cortex-M4 DSP extensions execute FFT-based harmonic analysis on every mains cycle. Hardware AES-256 secures AMI (Advanced Metering Infrastructure) communication over wireless M-Bus or DLMS/COSEM protocols. Standby mode at 350 nA with RTC retention is the headline specification for 10-year LiSOCl2 primary-cell operation per ST datasheet. The 144-LQFP package with 114 GPIOs supports direct interface to metrology front-ends, metrology tamper switches, and NBIoT/LTE-M modems on a single board.

🏭

Low-Power Motor Control and Field-Oriented Control (FOC)

For battery-powered brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) drives, the STM32L471ZGT6 delivers Cortex-M4 + DSP compute for sensorless field-oriented control without a separate DSP chip. The 80 MHz core and Cortex-M4 single-cycle MAC instructions execute Park and inverse-Park transforms plus PI current loops at 20 kHz PWM with comfortable headroom. Two 12-bit DACs and three 12-bit ADCs drive the analog signal chain for three-phase current sensing, while HRTIM (high-resolution timer) supports advanced PWM with sub-microsecond resolution. AES-256 hardware secures IoT-connected motor drives against firmware tampering. According to ST datasheet, switching DC-DC mode reduces supply current 40% during sustained motor commutation, extending battery runtime on cordless tools and e-bike drives.

📱

Portable Consumer Devices and Battery IoT

The STM32L471ZGT6 serves portable consumer electronics such as smart locks, GPS trackers, and wireless sensor peripherals where multi-day battery life and USB charging are first-class requirements. USB 2.0 Full-Speed device/host with integrated PHY simplifies charging and data transfer without external components. Stop2 mode at 1.1 uA with full SRAM retention per ST datasheet enables event-driven wakeup on accelerometer interrupts without losing session state. The 1 MB Flash accommodates rich Bluetooth Low Energy or proprietary 2.4 GHz protocol stacks plus secure bootloaders. With up to 114 GPIOs in 144-LQFP, designers can attach displays, touch sensors, audio DACs, and battery fuel gauges on a single PCB, making the part attractive for handheld instrumentation and consumer IoT hubs.

✈️

Aerospace Telemetry and UAV Flight Controllers

For UAV flight controllers and aerospace telemetry units, the STM32L471ZGT6 delivers aerospace-parity signal-processing compute with a hardened industrial temperature grade. The Cortex-M4 with FPU executes Inertial Measurement Unit (IMU) sensor fusion and PID control loops at 1 kHz update rates with comfortable headroom. Two CAN 2.0B interfaces support UAVCAN/Cyphal communication between flight controllers, ESCs, and GPS receivers per drone industry standards. Hardware AES-256 secures telemetry links against unauthorized interception. Stop2 mode at 1.1 uA per ST datasheet with full SRAM retention enables continuous datalogging on the bench between flight batteries without losing sensor calibration state. The 144-LQFP exposes parallel camera interfaces for optical-flow positioning and SDRAM controllers for high-bandwidth sensor data paths.

What is the operating voltage range of STM32L471ZGT6?
The STM32L471ZGT6 operates from 1.71 V to 3.6 V on its main VDD supply, per ST datasheet. The device includes an integrated LDO and optional step-down DC-DC converter (PWR_LDO_SCALE register control) for ultra-low-power modes. Battery applications using two AA cells or a LiSOCl2 primary cell operate directly without boost, simplifying BOM and reducing quiescent current.
How much SRAM and Flash does STM32L471ZGT6 have?
The STM32L471ZGT6 includes 1 MB of Flash and 128 KB of SRAM, with 32 KB dedicated to SRAM2a parity-protected low-power retention. This is the high-density variant of the STM32L471 series. The 1 MB Flash supports dual-bank operation, secure bootloader storage, and over-the-air firmware updates with a dedicated A/B partition scheme.
What is the maximum clock speed of STM32L471ZGT6?
The STM32L471ZGT6 runs the Arm Cortex-M4 core at up to 80 MHz, delivering 100 DMIPS and a CoreMark score of approximately 273. According to ST datasheet, wait-state configuration at 80 MHz requires the flash ACR register LATENCY field set to 4 WS for VDD above 2.1 V. This provides adequate headroom for digital signal processing in sensor fusion and motor control loops.
What package is STM32L471ZGT6 and how many pins does it have?
The STM32L471ZGT6 ships in a 144-pin LQFP (20 x 20 mm, 0.5 mm pitch) package, the largest in the STM32L471 line for maximum GPIO exposure. The package_svg_key on this product page maps to the LQFP-144 land pattern. The 144-LQFP delivers up to 114 GPIOs and exposes all high-speed peripherals including USB, SDMMC, and parallel camera interface.
Where can I buy STM32L471ZGT6 and what is the current price?
The STM32L471ZGT6 is in stock at authorized distributors including LCSC, DigiKey, Mouser, and Win Source, as of 2026-10-10. Unit pricing starts at approximately 12.47 USD at quantity 1, with volume pricing down to roughly 7.49 USD per unit at 1,000 pieces per LCSC. Lead time is typically 8-12 weeks for production orders through authorized channels.
What is the lead time for STM32L471ZGT6 orders?
The STM32L471ZGT6 lead time from ST authorized distributors ranges from 8 to 12 weeks for production quantities as of 2026-10-10. LCSC lists 7 units in immediate stock for engineering samples. For high-volume OEM commitments, ST offers direct sales engagement with 16-week booking visibility. Independent distributors may offer spot inventory at premium pricing.
Is STM32L471ZGT6 in stock right now?
Yes, the STM32L471ZGT6 is currently in stock at LCSC with at least 7 units listed at 12.47 USD per piece, as of 2026-10-10. DigiKey and Mouser maintain franchised stocking for production quantities. The part has an active lifecycle status from STMicroelectronics with no end-of-life notices currently published.
What are the key low-power features of STM32L471ZGT6?
The STM32L471ZGT6 supports Shutdown mode at 30 nA typical, Standby at 350 nA with RTC retention, Stop2 at 1.1 uA with full SRAM2a retention, and Run mode at 100 uA/MHz. The switched DC-DC buck converter can replace the LDO for high-current rails, reducing core supply current by up to 40%. Per AN4621 status LEDs, peripheral clock gating scales consumption dynamically with CPU load.
STM32L471ZGT6 vs STM32L452RET6P - which is better for battery-powered designs?
The STM32L471ZGT6 (1 MB Flash, 128 KB SRAM, 144-LQFP) outperforms the STM32L452RET6P (256 KB Flash, 64-LQFP) on memory and GPIO count for feature-rich products, while both share the Cortex-M4 + FPU platform and 80 MHz maximum. For ultra-compact battery devices, the L452 wins with smaller 64-LQFP footprint. For industrial sensor hubs needing CAN + USB, the L471 is the better choice.
What is the difference between STM32L471ZGT6 and STM32L443RCT6?
The STM32L471ZGT6 is the 144-pin 1 MB Flash variant with Cortex-M4 + FPU, while the STM32L443RCT6 is a 64-pin 256 KB Flash Cortex-M4 device without FPU. Both operate up to 80 MHz and 1.71-3.6 V supply. The L471 has more peripherals including CAN 2.0B and AES-256, while the L443 is more cost-optimized for compact USB-only products.
When should I choose STM32L471ZGT6 over STM32L412RBT6P?
Choose the STM32L471ZGT6 when the design requires more than 256 KB Flash, more than 32 GPIOs, CAN bus connectivity, AES-256 hardware encryption, or Stop2 mode with full SRAM retention. The STM32L412RBT6P is the better pick for compact low-cost Cortex-M4 designs below 64 pins without CAN. For sensor-netz or meter applications needing firmware-OTA, the L471 is the clear winner.
What is the best drop-in replacement for STM32L471ZGT6?
The closest drop-in within ST is STM32L471ZGT6U (tape and reel variant) and STM32L471RGT6 (64-LQFP 1 MB variant, same die). For second sourcing with Cortex-M4 parity, GigaDevice GD32F450IGH6 12V in 176-BGA requires PCB rework. ST authorized second sources for the L4 family do not exist at the same pin count; consider software migration to GD32E503RE for new designs.
Where to download the STM32L471ZGT6 datasheet PDF?
The official STM32L471ZGT6 datasheet is available as a free PDF download from STMicroelectronics at https://www.st.com/resource/en/datasheet/stm32l471qe.pdf. For detailed register definitions, complement with reference manual RM0351 (STM32L47x/L48x/L49x/L4Ax) also hosted on st.com. Datasheets.com, Mouser, and DigiKey product pages also host the PDF for convenience.
Where to find the STM32L471ZGT6 pinout diagram?
The complete 144-LQFP pinout for STM32L471ZGT6 is documented in the official datasheet Section 4 (Pin Definitions) at https://www.st.com/resource/en/datasheet/stm32l471qe.pdf. The XAIPART product page also shows an SVG pinout diagram under the package_svg_key lqfp-144. For evaluation, the STM32L4 Discovery board (B-L475E-IOT01A) reference schematic provides example pin mapping.

Engineering reference data for STM32L471ZGT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32L471ZGT6 when you need a feature-rich, ultra-low-power Cortex-M4 MCU with FPU and DSP in a 144-LQFP package for industrial sensor hubs, medical wearables, or smart metering. The 1 MB Flash and 128 KB SRAM accommodate full protocol stacks (BLE, LoRa, MQTT) plus DSP-based signal processing on a single chip, while the 80 MHz Cortex-M4 plus FPU executes sensor-fusion loops at high update rates. For compact 64-pin designs, drop to STM32L452RET6P with 256 KB Flash; for non-FPU cost-sensitive products, choose STM32L443RCT6. The AES-256 hardware and Stop2 mode with full SRAM2a retention make the L471ZGT6 the default choice for battery-powered secure products in industrial IoT, while the STM32G474RBT6 is the higher-performance upgrade path for motor control with HRTIM. None of the alternatives share the 144-LQFP footprint exactly, so any move to LQFP-64 or LQFP-100 requires PCB rework.

Comparison with Alternatives

Parameter This Product STM32L471RGT6 STM32L471VGT6 STM32L471QGI6 STM32L452RET6P
Brand STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Package LQFP-144 LQFP-64 LQFP-100 UFBGA-132 LQFP-64
Core Cortex-M4 + FPU Cortex-M4 + FPU Cortex-M4 + FPU Cortex-M4 + FPU Cortex-M4 + FPU
Flash 1 MB 1 MB 1 MB 1 MB 256 KB
SRAM 128 KB 128 KB 128 KB 128 KB 64 KB
Maximum Clock Frequency 80 MHz 80 MHz 80 MHz 80 MHz 80 MHz
GPIO Count 114 51 82 109 51
Operating 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
CAN Controllers 2 2 2 2 1
AES-256 Hardware Yes Yes Yes Yes Yes

Key Differentiators

  • Highest pin count in STM32L471 family (vs STM32L471RGT6)
  • 1 MB Flash with FPU + DSP (vs STM32L452RET6P)
  • Full hardware AES-256 + 32 KB SRAM2a (vs STM32L443RCT6)

Design Notes

The STM32L471ZGT6 ships with both LDO and integrated DC-DC buck converter (PWR_CR register PWR_LDO_SCALE bit). For battery applications demanding the lowest Stop2 current (1.1 uA per ST datasheet), select the LDO mode and disable the DC-DC converter. Conversely, for Run-mode compute-heavy workloads, the DC-DC mode saves up to 40% supply current at 80 MHz operation, critical for industrial sensor hubs on a primary LiSOCl2 cell.

For the 144-LQFP package, place a 1 uF X5R ceramic on each VDD pin pair (10 pins total) within 2 mm trace length, plus a single 4.7 uF bulk capacitor on the VDDA pin. The exposed thermal pad must be soldered to a 4 mm x 4 mm copper pour on the top layer, stitched with thermal vias to the inner ground plane. Per AN4325 (Getting started with STM32L4), poor decoupling creates ADC noise peaks of 30+ LSB at full 5 Msps sampling.

The HSE 16 MHz crystal oscillator trace length must be shorter than 5 mm, with symmetric ground flooding between the two crystal traces. Add a 5.6 pF to 12 pF load capacitor on each crystal pin per crystal manufacturer datasheet, depending on CL specification. For RTC accuracy, choose a 32.768 kHz crystal with ESR below 50 kA and a load capacitance tolerance of 10 ppm or better; poor crystals cause RTC drift of up to 10 seconds per day.

Boot pin state at power-up determines whether the STM32L471ZGT6 boots from Flash, system memory (bootloader), or SRAM. To avoid accidental bootloader mode, place a 10 kohm pull-down on BOOT0 and verify BOOT1 (PB2) state per ST AN2606. Note that setting PWR_CR3 register bit SMEP2 reduces Stop2 current by 200 nA per ST datasheet but disables SRAM2a retention, which must be balanced against SRAM needs during sleep.

Compliance Information

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
Lead Free
Yes
Halogen Free
Yes
Conflict Minerals
Compliant

RoHS and REACH compliant per ST product page declaration. Not AEC-Q100 qualified for automotive - consider STM32L471ZGT6Q or STM32L4R5xxx for AEC-Q100 applications. Halogen-free per ST REACH presentation. Conflict minerals compliant per ST supplier policy.

Data verified on: 2026-10-10 — data verified and curated by XAIPART's component engineering team

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Related Components & Terms

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