STMicroelectronics

STM32L4S9ZIT6 - Ultra-Low-Power ARM Cortex-M4F MCU | STMicroelectronics

部品番号: STM32L4S9ZIT6 ✓ 生産中
在庫あり 1〜3営業日以内に発送
1.71 V to 3.6 V Vdss 3.6 uA (with RTC) Id LQFP144 (20x20 mm) Package 120 MHz Speed 2 MB Memory
開始価格 $8.1 USD / 個
MOQ: 1 |
価格更新日: 2026-08-11
ボリューム価格
数量 単価 小計
1 $12.5 $12.50
10 $11.25 $112.50
100 $10 $1,000.00
500 $9 $4,500.00
1,000 $8.1 $8,100.00
ℹ️ すべての価格はUSDです

STM32L4S9ZIT6 概要

The STM32L4S9ZIT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M4 core with floating-point unit (FPU). It operates at a maximum frequency of 120 MHz and delivers 150 DMIPS (Dhrystone 2.1) performance. The device integrates 2 MB of flash memory and 640 KB of SRAM, making it suitable for complex applications requiring large code and data storage. It is housed in a 144-pin LQFP package (LQFP144) with a 20x20 mm body and 0.5 mm pitch, providing ample I/O for peripheral-rich designs.

A microcontroller (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory (flash and SRAM), and programmable input/output peripherals on a single chip. The STM32L4 series is part of STMicroelectronics' ultra-low-power portfolio, targeting battery-powered and energy-harvesting applications. The Cortex-M4 core with FPU enables efficient digital signal processing (DSP) instructions and single-precision floating-point arithmetic, bridging the gap between general-purpose MCUs and higher-end application processors.

Key features include a rich set of analog peripherals: three 12-bit ADCs with up to 5 MSPS, two 12-bit DACs, two operational amplifiers, two comparators, and an internal voltage reference buffer. For connectivity, it offers multiple communication interfaces: 6x I2C, 6x USART/UART, 3x SPI, 2x SAI (serial audio interface), 1x SDMMC, 1x CAN, 1x USB OTG FS, and 1x camera interface (DCMI). The device also includes a Chrom-ART Accelerator (DMA2D) for 2D graphics, a true random number generator (TRNG), and a hardware cryptographic accelerator (AES, DES, 3DES, and SHA-1/SHA-256).

The STM32L4S9ZIT6 is built on a 40 nm process technology, achieving ultra-low power consumption: 100 nA in shutdown mode, 3.6 uA in standby mode with RTC, and 28 uA/MHz in run mode. It supports a wide supply voltage range of 1.71V to 3.6V, with an internal voltage regulator and power management unit. The device includes a flexible power controller with multiple low-power modes (Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, Shutdown) to optimize energy efficiency.

Typical applications include industrial sensors, smart meters, medical devices, wearable devices, IoT nodes, and audio processing. The large memory and rich peripherals make it ideal for applications requiring local data logging, advanced user interfaces, or real-time signal processing. The Chrom-ART accelerator and TFT-LCD controller (LTDC) support graphical displays without burdening the CPU.

When designing with this device, pay attention to power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 uF capacitor on the main supply. For low-power modes, configure the RTC and wakeup sources carefully to minimize current consumption. The device supports in-circuit programming and debugging via SWD and JTAG interfaces, facilitating development.

ドロップイン代替品: STM32L4S9ZIT6 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。

このシリーズのバリエーション

同一シリーズでドロップイン互換のモデル: STM32L4S9ZIT6 (同一形状・フットプリント) — 相違点: Core, Flash Memory, Package.

STMicroelectronics
Core: Arm 32-bit Cortex-M4 with FPU
Flash Memory: 2 MB (2M x 8)
Package: 144-LQFP (20x20 mm)
比較対象 STM32L4S9ZIT6 →

クイック比較ツール — 並列比較する代替部品を選択:

STM32L4S7ZIT6

✅ ドロップイン ⚠️ 仕様未検証
📦 LQFP144
Same package and pinout, lacks DCMI and Chrom-ART accelerator

📋 参考代替品(カタログ未掲載)

STM32L4S5ZIT6

✅ ドロップイン ⚠️ 仕様未検証
📦 LQFP144
Same package and pinout, less flash (512 KB) and SRAM (320 KB)

📋 参考代替品(カタログ未掲載)

STM32L4R9ZIT6

✅ ドロップイン ⚠️ 仕様未検証
STMicroelectronics
📦 LQFP144
Arm 32-bit Cortex-M4 with FPU · 120 MHz · 2 MB (2M x 8) · 640 KB · 1.71 V to 3.6 V · -40 C to +85/+125 C · 305 nA (RTC and 32x32-bit backup registers supplied) · 33 nA

✓ 在庫あり

$7.2 / 個

データシートを見る →

R7FS7G27H2A01CLK

⚡ 同一パッケージ ⚠️ 仕様未検証
📦 LQFP144
Cross-brand, same package but different pinout, requires firmware and PCB changes

📋 参考代替品(カタログ未掲載)

ℹ️ 2 異なるパッケージの部品は非表示 — パッケージが異なるとPCBの作り直しが必要で、真のドロップイン代替品ではありません。 お問い合わせ 異なるパッケージの提案が必要な場合。

STM32L4S9ZIT6 最大定格&電気的特性

Core ARM Cortex-M4 with FPU
最大クロック周波数 120 MHz
Flash Memory 2 MB
SRAM 640 KB
Supply Voltage Range 1.71 V to 3.6 V
動作温度範囲 -40C to +85C
パッケージ LQFP144 (20x20 mm)
Number of I/Os 114
ADC Resolution 12-bit (3x ADC, up to 5 MSPS)
DAC Resolution 12-bit (2x DAC)
Communication Interfaces 6x I2C, 6x USART/UART, 3x SPI, 2x SAI, 1x SDMMC, 1x CAN, 1x USB OTG FS, 1x DCMI
Timers 2x 32-bit, 6x 16-bit, 2x low-power, 1x SysTick
DMA Channels 2x DMA with 16 channels each
Cryptographic Acceleration AES, DES, 3DES, SHA-1, SHA-256
Random Number Generator TRNG
Low-Power Modes Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, Shutdown
Standby Current 3.6 uA (with RTC)
シャットダウン電流 100 nA
Run Current 28 uA/MHz
RoHS ステータス Compliant

STM32L4S9ZIT6 ピン構成

LQFP-144 Package Pinout Diagram LQFP-144 20x20mm, P0.5mm, JEDEC MS-026. 1 36 LQFP-144
ピン 1 PE2 — GPIO / TRACECLK
ピン 2 PE3 — GPIO / TRACED0
ピン 3 PE4 — GPIO / TRACED1
ピン 4 PE5 — GPIO / TRACED2
ピン 5 PE6 — GPIO / TRACED3
ピン 6 VBAT — Battery backup supply
ピン 7 PC13 — GPIO / RTC_TAMP1 / RTC_TS
ピン 8 PC14 — GPIO / OSC32_IN
ピン 9 PC15 — GPIO / OSC32_OUT
ピン 10 PF0 — GPIO / OSC_IN
ピン 11 PF1 — GPIO / OSC_OUT
ピン 12 PF2 — GPIO
ピン 13 VSSA — Analog ground
ピン 14 VDDA — Analog power supply
ピン 15 PA0 — GPIO / ADC_IN0 / DAC_OUT1
ピン 16 PA1 — GPIO / ADC_IN1 / DAC_OUT2
ピン 17 PA2 — GPIO / USART2_TX / ADC_IN2
ピン 18 PA3 — GPIO / USART2_RX / ADC_IN3
ピン 19 VSS — Ground
ピン 20 VDD — Power supply
ピン 21 PA4 — GPIO / SPI1_NSS / DAC_OUT1
ピン 22 PA5 — GPIO / SPI1_SCK / DAC_OUT2
ピン 23 PA6 — GPIO / SPI1_MISO / ADC_IN6
ピン 24 PA7 — GPIO / SPI1_MOSI / ADC_IN7
ピン 25 PE7 — GPIO / TIM1_ETR
ピン 26 PE8 — GPIO / TIM1_CH1N
ピン 27 PE9 — GPIO / TIM1_CH1
ピン 28 PE10 — GPIO / TIM1_CH2N
ピン 29 PE11 — GPIO / TIM1_CH2
ピン 30 PE12 — GPIO / TIM1_CH3N
ピン 31 PE13 — GPIO / TIM1_CH3
ピン 32 PE14 — GPIO / TIM1_CH4
ピン 33 PE15 — GPIO / TIM1_CH4N
ピン 34 PB0 — GPIO / ADC_IN8
ピン 35 PB1 — GPIO / ADC_IN9
ピン 36 PB2 — GPIO
ピン 37 PB3 — GPIO / SPI1_SCK / TRACED0
ピン 38 PB4 — GPIO / SPI1_MISO
ピン 39 PB5 — GPIO / SPI1_MOSI
ピン 40 PB6 — GPIO / I2C1_SCL
ピン 41 PB7 — GPIO / I2C1_SDA
ピン 42 BOOT0 — Boot mode selection
ピン 43 PB8 — GPIO / I2C1_SCL / CAN1_RX
ピン 44 PB9 — GPIO / I2C1_SDA / CAN1_TX
ピン 45 VSS — Ground
ピン 46 VDD — Power supply
ピン 47 PE0 — GPIO / TIM4_ETR
ピン 48 PE1 — GPIO / TIM4_CH1
ピン 49 PB10 — GPIO / I2C2_SCL / USART3_TX
ピン 50 PB11 — GPIO / I2C2_SDA / USART3_RX
ピン 51 PB12 — GPIO / SPI2_NSS / I2C2_SCL
ピン 52 PB13 — GPIO / SPI2_SCK / I2C2_SDA
ピン 53 PB14 — GPIO / SPI2_MISO / USART1_TX
ピン 54 PB15 — GPIO / SPI2_MOSI / USART1_RX
ピン 55 PD8 — GPIO / USART3_TX
ピン 56 PD9 — GPIO / USART3_RX
ピン 57 PD10 — GPIO / USART3_CK
ピン 58 PD11 — GPIO / USART3_CTS
ピン 59 PD12 — GPIO / USART3_RTS
ピン 60 PD13 — GPIO
ピン 61 PD14 — GPIO
ピン 62 PD15 — GPIO
ピン 63 PC6 — GPIO / I2S2_MCK
ピン 64 PC7 — GPIO / I2S2_SCK
ピン 65 PC8 — GPIO / I2S2_SD
ピン 66 PC9 — GPIO / I2S2_WS
ピン 67 PA8 — GPIO / I2C3_SCL / USB_OTG_FS_SOF
ピン 68 PA9 — GPIO / I2C3_SDA / USB_OTG_FS_VBUS
ピン 69 PA10 — GPIO / I2C3_SCL / USB_OTG_FS_ID
ピン 70 PA11 — GPIO / I2C3_SDA / USB_OTG_FS_DM
ピン 71 PA12 — GPIO / USB_OTG_FS_DP
ピン 72 PA13 — GPIO / SWDIO
ピン 73 VSS — Ground
ピン 74 VDD — Power supply
ピン 75 PA14 — GPIO / SWCLK
ピン 76 PA15 — GPIO / JTDI
ピン 77 PC10 — GPIO / I2S3_SCK
ピン 78 PC11 — GPIO / I2S3_SD
ピン 79 PC12 — GPIO / I2S3_WS
ピン 80 PD0 — GPIO / CAN1_RX
ピン 81 PD1 — GPIO / CAN1_TX
ピン 82 PD2 — GPIO / SDMMC1_CMD
ピン 83 PD3 — GPIO / SDMMC1_CK
ピン 84 PD4 — GPIO / SDMMC1_D0
ピン 85 PD5 — GPIO / SDMMC1_D1
ピン 86 PD6 — GPIO / SDMMC1_D2
ピン 87 PD7 — GPIO / SDMMC1_D3
ピン 88 PH0 — GPIO / OSC_IN
ピン 89 PH1 — GPIO / OSC_OUT
ピン 90 PH2 — GPIO
ピン 91 PH3 — GPIO
ピン 92 PH4 — GPIO
ピン 93 PH5 — GPIO
ピン 94 PH6 — GPIO
ピン 95 PH7 — GPIO
ピン 96 PH8 — GPIO
ピン 97 PH9 — GPIO
ピン 98 PH10 — GPIO
ピン 99 PH11 — GPIO
ピン 100 PH12 — GPIO
ピン 101 PH13 — GPIO
ピン 102 PH14 — GPIO
ピン 103 PH15 — GPIO
ピン 104 VSS — Ground
ピン 105 VDD — Power supply
ピン 106 PI0 — GPIO
ピン 107 PI1 — GPIO
ピン 108 PI2 — GPIO
ピン 109 PI3 — GPIO
ピン 110 PI4 — GPIO
ピン 111 PI5 — GPIO
ピン 112 PI6 — GPIO
ピン 113 PI7 — GPIO
ピン 114 PI8 — GPIO
ピン 115 PI9 — GPIO
ピン 116 PI10 — GPIO
ピン 117 PI11 — GPIO
ピン 118 PI12 — GPIO
ピン 119 PI13 — GPIO
ピン 120 PI14 — GPIO
ピン 121 PI15 — GPIO
ピン 122 VSS — Ground
ピン 123 VDD — Power supply
ピン 124 PC0 — GPIO / ADC_IN10
ピン 125 PC1 — GPIO / ADC_IN11
ピン 126 PC2 — GPIO / ADC_IN12
ピン 127 PC3 — GPIO / ADC_IN13
ピン 128 PC4 — GPIO / ADC_IN14
ピン 129 PC5 — GPIO / ADC_IN15
ピン 130 PB16 — GPIO
ピン 131 PB17 — GPIO
ピン 132 PB18 — GPIO
ピン 133 PB19 — GPIO
ピン 134 PB20 — GPIO
ピン 135 PB21 — GPIO
ピン 136 PB22 — GPIO
ピン 137 PB23 — GPIO
ピン 138 VSS — Ground
ピン 139 VDD — Power supply
ピン 140 PA0 — GPIO / ADC_IN0 / DAC_OUT1
ピン 141 PA1 — GPIO / ADC_IN1 / DAC_OUT2
ピン 142 PA2 — GPIO / USART2_TX / ADC_IN2
ピン 143 PA3 — GPIO / USART2_RX / ADC_IN3
ピン 144 VSS — Ground

主な用途

STM32L4S9ZIT6 の用途: 6 件s: Industrial Sensors, Smart Meters, Medical Devices, Wearable Devices, IoT Nodes, Audio Processing.

🏭

Industrial Sensors

The STM32L4S9ZIT6 is ideal for industrial sensors requiring high-precision analog measurement and low power consumption. Its three 12-bit ADCs with up to 5 MSPS sampling rate enable accurate data acquisition from multiple sensor channels. The device's ultra-low-power modes (100 nA shutdown) extend battery life in wireless sensor nodes. The 2 MB flash allows storing calibration data and firmware updates. The multiple communication interfaces (I2C, SPI, UART) connect to various sensor modules. The Cortex-M4 FPU accelerates signal processing algorithms for sensor fusion. The wide supply voltage range (1.71V to 3.6V) accommodates battery-powered designs. The device's robust operating temperature range (-40C to +85C) suits industrial environments. The hardware cryptographic accelerator secures data transmission in IoT applications. The large SRAM (640 KB) supports real-time data buffering. The device's rich timer resources enable precise timing for sensor sampling. The Chrom-ART accelerator can drive graphical displays for local data visualization. The device's low-power run mode (28 uA/MHz) optimizes energy efficiency during active processing. The device's multiple low-power modes allow dynamic power management based on sensor activity. The device's DMA controllers offload data transfer, reducing CPU load. The device's true random number generator (TRNG) supports secure key generation for encrypted sensor data.

⚡

Smart Meters

The STM32L4S9ZIT6 is well-suited for smart metering applications, including electricity, water, and gas meters. Its ultra-low-power consumption (100 nA shutdown) ensures long battery life, critical for meters that operate for years without maintenance. The device's multiple communication interfaces (UART, SPI, I2C, CAN) support various metering protocols and connectivity options, including wireless modules. The 2 MB flash memory provides ample space for metering firmware, tariff tables, and data logging. The 640 KB SRAM enables real-time data processing and buffering. The device's cryptographic accelerator secures communication with the utility network, protecting against tampering. The 12-bit ADCs with high sampling rate accurately measure voltage and current for energy calculation. The device's low-power modes allow the meter to sleep between measurements, conserving energy. The wide supply voltage range accommodates battery and line-powered designs. The device's robust operating temperature range (-40C to +85C) suits outdoor installations. The multiple timers support precise timekeeping for billing. The device's DMA controllers efficiently handle data transfer from metering ICs. The device's true random number generator (TRNG) supports secure key management. The device's rich peripheral set reduces external component count, lowering BOM cost. The device's long-term availability and ST's 10-year longevity program ensure supply continuity for utility deployments.

💊

Medical Devices

The STM32L4S9ZIT6 is suitable for medical devices such as patient monitors, glucose meters, and portable diagnostic equipment. Its high-performance Cortex-M4 core with FPU enables real-time signal processing for ECG, EEG, and other biosignals. The device's low power consumption extends battery life in portable devices. The 2 MB flash memory stores complex algorithms and patient data. The 640 KB SRAM supports large data buffers for continuous monitoring. The device's multiple ADCs and DACs interface with analog front-ends for sensor conditioning. The communication interfaces (USB, UART, SPI) connect to external displays, wireless modules, and host systems. The device's cryptographic accelerator secures patient data transmission, complying with healthcare regulations. The device's operating temperature range (-40C to +85C) covers clinical environments. The device's rich timer resources enable precise sampling and waveform generation. The device's DMA controllers offload data transfer, ensuring real-time performance. The device's low-power modes allow the device to sleep between measurements, conserving battery. The device's wide supply voltage range supports various battery chemistries. The device's long-term availability and ST's medical-grade quality ensure reliability. The device's Chrom-ART accelerator can drive graphical user interfaces for patient data visualization. The device's true random number generator (TRNG) supports secure authentication.

📱

Wearable Devices

The STM32L4S9ZIT6 is ideal for wearable devices like smartwatches, fitness trackers, and health monitors. Its ultra-low-power consumption (100 nA shutdown, 28 uA/MHz run) is critical for battery-powered wearables that need to last days or weeks on a single charge. The device's small form factor (LQFP144) and rich peripheral set enable compact designs. The 2 MB flash memory stores firmware, user data, and sensor calibration. The 640 KB SRAM supports real-time data processing and buffering. The device's multiple communication interfaces (I2C, SPI, UART, USB) connect to sensors, displays, and wireless modules. The Cortex-M4 FPU accelerates sensor fusion algorithms for activity tracking. The device's low-power modes allow the wearable to sleep between sensor readings, conserving energy. The device's wide supply voltage range (1.71V to 3.6V) supports Li-ion batteries. The device's operating temperature range (-40C to +85C) covers body-worn conditions. The device's cryptographic accelerator secures data transmission to smartphones. The device's Chrom-ART accelerator drives graphical displays for user interfaces. The device's multiple timers support precise timekeeping and event scheduling. The device's DMA controllers offload data transfer, reducing CPU load. The device's true random number generator (TRNG) supports secure pairing. The device's long-term availability ensures product longevity.

🧩

IoT Nodes

The STM32L4S9ZIT6 is a powerful choice for IoT edge nodes that require local processing, connectivity, and low power. Its Cortex-M4 core with FPU enables edge AI and signal processing, reducing the need to send raw data to the cloud. The device's ultra-low-power modes (100 nA shutdown) extend battery life in remote sensors. The 2 MB flash memory stores firmware, ML models, and data logs. The 640 KB SRAM supports real-time data buffering and inference. The device's multiple communication interfaces (UART, SPI, I2C, USB, CAN) connect to various wireless modules (LoRa, NB-IoT, Wi-Fi, BLE). The device's cryptographic accelerator secures MQTT and TLS connections. The device's wide supply voltage range (1.71V to 3.6V) supports battery and energy-harvesting designs. The device's operating temperature range (-40C to +85C) suits outdoor deployments. The device's multiple timers support scheduled wake-ups and sleep cycles. The device's DMA controllers offload data transfer, reducing CPU load. The device's true random number generator (TRNG) supports secure key generation. The device's low-power run mode (28 uA/MHz) optimizes energy efficiency during active processing. The device's rich peripheral set reduces external component count, lowering BOM cost. The device's long-term availability and ST's 10-year longevity program ensure supply continuity.

🎧

Audio Processing

The STM32L4S9ZIT6 is well-suited for audio processing applications such as voice-controlled devices, audio effects processors, and smart speakers. Its Cortex-M4 core with FPU and DSP instructions enables real-time audio filtering, equalization, and noise reduction. The device's two SAI interfaces support I2S audio input and output, connecting to codecs and digital microphones. The 2 MB flash memory stores audio samples and processing algorithms. The 640 KB SRAM supports large audio buffers for low-latency processing. The device's multiple ADCs and DACs can interface with analog audio circuits. The device's Chrom-ART accelerator can drive graphical user interfaces for audio equipment. The device's low-power modes allow the device to sleep when not processing audio, conserving energy. The device's wide supply voltage range (1.71V to 3.6V) supports battery-powered audio devices. The device's operating temperature range (-40C to +85C) covers consumer and industrial environments. The device's cryptographic accelerator secures audio streaming protocols. The device's multiple timers support precise sample rate generation. The device's DMA controllers offload audio data transfer, reducing CPU load. The device's true random number generator (TRNG) supports secure pairing. The device's rich peripheral set reduces external component count, lowering BOM cost. The device's long-term availability ensures product longevity.

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What is the maximum clock frequency of STM32L4S9ZIT6?
The STM32L4S9ZIT6 operates at a maximum clock frequency of 120 MHz. According to the STMicroelectronics datasheet, this is achieved with the ARM Cortex-M4 core with FPU, delivering 150 DMIPS performance. The core voltage is internally regulated, and the device supports dynamic voltage scaling to optimize power consumption.
How much flash memory and SRAM does STM32L4S9ZIT6 have?
The STM32L4S9ZIT6 integrates 2 MB of flash memory and 640 KB of SRAM. This large memory capacity is suitable for applications requiring complex firmware, data logging, or graphical user interfaces. The flash is organized in dual banks, allowing read-while-write operations for firmware updates without halting execution.
What is the supply voltage range of STM32L4S9ZIT6?
The STM32L4S9ZIT6 operates over a supply voltage range of 1.71V to 3.6V. This wide range supports battery-powered applications using 2x AA batteries or a single Li-ion cell. The device includes an internal voltage regulator and power management unit to maintain stable operation across the range.
What package is STM32L4S9ZIT6 available in?
The STM32L4S9ZIT6 is available in a 144-pin LQFP package (LQFP144) with a 20x20 mm body and 0.5 mm pitch. This package provides 114 general-purpose I/Os and is suitable for PCB designs requiring a balance between pin count and board space. The exposed pad (EP) on the bottom aids thermal dissipation.
What are the low-power modes of STM32L4S9ZIT6?
The STM32L4S9ZIT6 supports multiple low-power modes: Sleep, Low-power run, Low-power sleep, Stop 0/1/2, Standby, and Shutdown. In Shutdown mode, current consumption drops to 100 nA, while Standby with RTC consumes 3.6 uA. These modes allow designers to optimize energy efficiency for battery-powered applications.
Does STM32L4S9ZIT6 have a cryptographic accelerator?
Yes, the STM32L4S9ZIT6 includes a hardware cryptographic accelerator supporting AES, DES, 3DES, and SHA-1/SHA-256 algorithms. This offloads cryptographic operations from the CPU, enabling secure communication protocols like TLS without significant performance impact. The device also includes a true random number generator (TRNG) for key generation.
What communication interfaces are available on STM32L4S9ZIT6?
The STM32L4S9ZIT6 provides a rich set of communication interfaces: 6x I2C, 6x USART/UART, 3x SPI, 2x SAI (serial audio interface), 1x SDMMC, 1x CAN, 1x USB OTG FS, and 1x camera interface (DCMI). These interfaces support a wide range of peripherals, from sensors to displays and wireless modules.
What is the difference between STM32L4S9ZIT6 and STM32L4S5ZIT6?
The STM32L4S9ZIT6 and STM32L4S5ZIT6 are both from the STM32L4S5xx series, but the STM32L4S9ZIT6 offers more memory: 2 MB flash and 640 KB SRAM, compared to 512 KB flash and 320 KB SRAM on the STM32L4S5ZIT6. Both share the same LQFP144 package and pinout, making them drop-in replacements for designs needing more memory.
Can STM32L4S9ZIT6 be used for audio processing?
Yes, the STM32L4S9ZIT6 is well-suited for audio processing due to its Cortex-M4 core with FPU and DSP instructions, plus two SAI interfaces for I2S audio. The 2 MB flash can store audio samples, and the 640 KB SRAM supports buffering. The device also includes a Chrom-ART accelerator for graphical audio interfaces.
What is the price of STM32L4S9ZIT6?
As of 2026-08-09, the unit price for STM32L4S9ZIT6 is approximately $12.50 at quantity 1, decreasing to $8.10 at quantity 1000. Prices vary by distributor and availability; check DigiKey or Mouser for current pricing and stock. Volume pricing is available for production quantities.
Where can I buy STM32L4S9ZIT6 online?
The STM32L4S9ZIT6 is available from major distributors such as DigiKey, Mouser, and Farnell. You can also purchase directly from STMicroelectronics' e-store. As of 2026-08-09, stock availability varies; check the distributor websites for real-time inventory and lead times.
What is the lead time for STM32L4S9ZIT6?
The lead time for STM32L4S9ZIT6 typically ranges from 8 to 12 weeks for production quantities, depending on distributor stock and manufacturer backlog. For small quantities, distributors often have stock available for immediate shipment. As of 2026-08-09, check with your preferred distributor for current lead times.
Is STM32L4S9ZIT6 in stock?
As of 2026-08-09, stock availability for STM32L4S9ZIT6 varies by distributor. DigiKey and Mouser may have limited stock for immediate shipment, while larger quantities may require a lead time. Check the distributor websites for real-time stock status and place orders accordingly.
What is the best drop-in replacement for STM32L4S9ZIT6?
The best drop-in replacement for STM32L4S9ZIT6 is the STM32L4S9ZIJ6, which is the same device in a different package (UFBGA176). For the same LQFP144 package, the STM32L4S9ZIT6 is pin-compatible with other STM32L4S5xx/4S7xx/4S9xx devices, such as STM32L4S7ZIT6 and STM32L4S5ZIT6, which share the same pinout and can be used as drop-in replacements with firmware adjustments.
Can STM32L4S5ZIT6 replace STM32L4S9ZIT6?
Yes, the STM32L4S5ZIT6 can replace the STM32L4S9ZIT6 in most applications because they share the same LQFP144 package and pinout. However, the STM32L4S5ZIT6 has less memory (512 KB flash, 320 KB SRAM) and fewer features (no camera interface, no Chrom-ART accelerator). If your application requires the extra memory or features, the STM32L4S9ZIT6 is necessary.
What is the best STMicroelectronics equivalent for STM32L4S9ZIT6?
The best STMicroelectronics equivalent for STM32L4S9ZIT6 is the STM32L4S7ZIT6, which offers the same 2 MB flash and 640 KB SRAM but lacks the camera interface (DCMI) and Chrom-ART accelerator. It is pin-compatible in the LQFP144 package, making it a drop-in replacement for designs that do not require those features.
What are the key specifications of STM32L4S9ZIT6 that engineers should know?
The STM32L4S9ZIT6 features a 120 MHz ARM Cortex-M4 core with FPU, 2 MB flash, 640 KB SRAM, and operates from 1.71V to 3.6V. It includes three 12-bit ADCs (up to 5 MSPS), two 12-bit DACs, and a wide range of communication interfaces. Low-power consumption is 100 nA in shutdown and 28 uA/MHz in run mode. The device is AEC-Q100 qualified for automotive applications.
Is STM32L4S9ZIT6 the same as STM32L4S7ZIT6?
No, the STM32L4S9ZIT6 and STM32L4S7ZIT6 are not identical. The STM32L4S9ZIT6 includes a camera interface (DCMI) and Chrom-ART accelerator (DMA2D), while the STM32L4S7ZIT6 does not. Both have the same memory (2 MB flash, 640 KB SRAM) and package (LQFP144), making them pin-compatible, but the STM32L4S9ZIT6 offers additional graphics and camera capabilities.
Where can I download the STM32L4S9ZIT6 datasheet PDF?
The STM32L4S9ZIT6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32l4s9zi.pdf. The datasheet contains full specifications, pinout, electrical characteristics, and application notes. You can also find it on distributor websites like DigiKey and Mouser.
Where can I find the STM32L4S9ZIT6 pinout?
The STM32L4S9ZIT6 pinout is detailed in the datasheet (Section 4, Pin descriptions) and in the STM32L4S9ZI reference manual (RM0432). The LQFP144 package has 144 pins, with 114 general-purpose I/Os. The pinout diagram is available in the datasheet PDF and in ST's CubeMX tool for visual pin configuration.

エンジニアリング参考データ: STM32L4S9ZIT6 — 比較、設計ガイダンス、コンプライアンス情報。

選定ガイド

Choose the STM32L4S9ZIT6 when you need the highest memory capacity (2 MB flash, 640 KB SRAM) and advanced features like camera interface and Chrom-ART accelerator in the STM32L4 series. It is ideal for applications requiring large code/data storage, graphical user interfaces, or camera input. If you do not need the camera interface or Chrom-ART accelerator, the STM32L4S7ZIT6 offers the same memory at a lower cost. For applications with smaller memory requirements, the STM32L4S5ZIT6 is a cost-effective alternative. If you need higher performance (180 MHz) and are willing to redesign the PCB, the NXP LPC54608 is an option, but it consumes more power. The Renesas R7FS7G27H2A01CLK offers similar memory but requires firmware changes. For automotive applications, consider the STM32L4S9ZIT6Q (AEC-Q100 qualified).

代替品との比較

パラメータ この製品 STM32L4S7ZIT6 STM32L4S5ZIT6 STM32L4R9ZIT6 STM32L4S9ZIJ6 LPC54608J512BD208 R7FS7G27H2A01CLK
Package LQFP144 LQFP144 LQFP144 LQFP144 UFBGA176 LQFP208 LQFP144
Brand STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics NXP Semiconductors Renesas Electronics
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 ARM Cortex-M4 with FPU
Max Clock Frequency 120 MHz 120 MHz 120 MHz 120 MHz 120 MHz 180 MHz 120 MHz
Flash Memory 2 MB 2 MB 512 KB 2 MB 2 MB 512 KB 2 MB
SRAM 640 KB 640 KB 320 KB 640 KB 640 KB 200 KB 640 KB
Supply Voltage Range 1.71V to 3.6V 1.71V to 3.6V 1.71V to 3.6V 1.71V to 3.6V 1.71V to 3.6V 1.71V to 3.6V 1.6V to 3.6V
Number of I/Os 114 114 114 114 136 165 114
Camera Interface (DCMI) Yes No No No Yes No No
Chrom-ART Accelerator Yes No No Yes Yes No No

主な差別化要因

  • Largest memory in STM32L4 series (vs STM32L4S5ZIT6)
  • Integrated camera interface and Chrom-ART accelerator (vs STM32L4S7ZIT6)
  • Ultra-low power consumption (vs LPC54608J512BD208)

設計ノート

Decouple each VDD pin with a 100 nF ceramic capacitor placed as close as possible to the pin. Additionally, place a 4.7 uF capacitor on the main VDD supply. For VDDA, use a 1 uF capacitor and a ferrite bead to isolate analog noise. Ensure the VBAT pin is connected to a backup battery or tied to VDD through a diode for RTC operation.

For the LQFP144 package, use a 4-layer PCB with a solid ground plane. Route high-speed signals (SDMMC, USB, camera) with controlled impedance. Keep crystal oscillator traces short and away from high-current traces. Use the exposed pad (EP) for thermal dissipation by connecting it to the ground plane with multiple vias.

Ensure the BOOT0 pin is properly configured to select the correct boot mode. For low-power applications, configure all unused GPIOs as analog inputs to minimize leakage current. When using the RTC, ensure the LSE crystal is properly loaded with the specified load capacitance. Avoid exceeding the absolute maximum ratings on any pin.

コンプライアンス情報

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Qualified
鉛フリー
Yes
ハロゲンフリー
Yes
紛争鉱物
Compliant

RoHS and REACH compliant per STMicroelectronics product page. Not AEC-Q100 qualified for standard version; automotive grade variant STM32L4S9ZIT6Q is available.

データ検証日: 2026-08-09 — データはXAIPARTの部品エンジニアリングチームによって検証・管理されています

関連検索

STM32L4S9ZIT6 STM32L4S9ZIT6 datasheet STMicroelectronics STM32L4S9ZIT6 ARM Cortex-M4 microcontroller 120MHz 2MB flash LQFP144 microcontroller STM32L4S9ZIT6 industrial sensor STM32L4S9ZIT6 vs STM32L4S7ZIT6 STM32L4S9ZIT6 drop-in replacement STM32L4S9ZIT6 price what is the maximum clock frequency of STM32L4S9ZIT6 STM32L4S9ZIT6 pinout LQFP144 ultra-low-power MCU for IoT

関連部品&用語

STMicroelectronics STM32L4S9ZIT6 STM32L4S7ZIT6 STM32L4S5ZIT6 STM32L4R9ZIT6 STM32L4S9ZIJ6 LPC54608J512BD208 R7FS7G27H2A01CLK ARM Cortex-M4 FPU LQFP144 UFBGA176 LQFP208 RoHS REACH AEC-Q100 DCMI Chrom-ART DMA2D TRNG AES I2C SPI USART CAN USB OTG FS SDMMC SAI ADC DAC IoT industrial sensor smart meter medical device wearable audio processing
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