STM32L432KC

Active
Design Win Education

Ultra-low-power with FPU Arm Cortex-M4 MCU 80 MHz with 256 Kbytes of Flash memory, USB

Download datasheet Order Direct
Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
Get Started
Partner products
Sales Briefcase

Product overview

Description

The STM32L432xx devices are the ultra-low-power microcontrollers based on the high-performance Arm® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all Arm® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.

The STM32L432xx devices embed high-speed memories (Flash memory up to 256 Kbyte, 64 Kbyte of SRAM), a Quad SPI flash memories interface and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.

The STM32L432xx devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall.

The devices offer a fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, two DAC channels, a low-power RTC, one general-purpose 32-bit timer, one 16-bit PWM timer dedicated to motor control, four general-purpose 16-bit timers, and two 16-bit low-power timers.

In addition, up to 3 capacitive sensing channels are available.

They also feature standard and advanced communication interfaces.

The STM32L432xx operates in the -40 to +85 °C (+105 °C junction), -40 to +105 °C (+125 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.

Some independent power supplies are supported: analog independent supply input for ADC, DAC, OPAMP and comparators

The STM32L432xx family offers a single 32-pin package.

  • All features

    • Ultra-low-power with FlexPowerControl
      • 1.71 V to 3.6 V power supply
      • -40 °C to 85/105/125 °C temperature range
      • 8 nA Shutdown mode (2 wakeup pins)
      • 28 nA Standby mode (2 wakeup pins)
      • 280 nA Standby mode with RTC
      • 1.0 μA Stop 2 mode, 1.28 μA with RTC
      • 84 μA/MHz run mode
      • Batch acquisition mode (BAM)
      • 4 μs wakeup from Stop mode
      • Brown out reset (BOR)
      • Interconnect matrix
    • Core: Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait-state execution from Flash memory, frequency up to 80 MHz, MPU, 100DMIPS and DSP instructions
    • Performance benchmark
      • 1.25 DMIPS/MHz (Drystone 2.1)
      • 273.55 CoreMark® (3.42 CoreMark/MHz @ 80 MHz)
    • Energy benchmark
      • 176.7 ULPBench® score
    • Clock Sources
      • 32 kHz crystal oscillator for RTC (LSE)
      • Internal 16 MHz factory-trimmed RC (±1%)
      • Internal low-power 32 kHz RC (±5%)
      • Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than ±0.25 % accuracy)
      • Internal 48 MHz with clock recovery
      • 2 PLLs for system clock, USB, audio, ADC
    • Up to 26 fast I/Os, most 5 V-tolerant
    • RTC with HW calendar, alarms and calibration
    • Up to 3 capacitive sensing channels
    • 11x timers: 1x 16-bit advanced motor-control, 1x 32-bit and 2x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
    • Memories
      • Up to 256 KB single bank Flash, proprietary code readout protection
      • 64 KB of SRAM including 16 KB with hardware parity check
      • Quad SPI memory interface
    • Rich analog peripherals (independent supply)
      • 1x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
      • 2x 12-bit DAC output channels, low-power sample and hold
      • 1x operational amplifier with built-in PGA
      • 2x ultra-low-power comparators
    • 14x communication interfaces
      • USB 2.0 full-speed crystal less solution with LPM and BCD
      • 1x SAI (serial audio interface)
      • 2x I2C FM+(1 Mbit/s), SMBus/PMBus
      • 3x USARTs (ISO 7816, LIN, IrDA, modem)
      • 1x LPUART (Stop 2 wake-up)
      • 2x SPIs (and 1x Quad SPI)
      • CAN (2.0B Active)
      • SWPMI single wire protocol master I/F
      • IRTIM (Infrared interface)
    • 14-channel DMA controller
    • True random number generator
    • CRC calculation unit, 96-bit unique ID
    • Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
    • All packages are ECOPACK2® compliant

Circuit Diagram

EDA Symbols, Footprints and 3D Models

STMicroelectronics - STM32L432KC

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package SMPS Grade RoHS Compliance Grade Material Declaration**
STM32L432KCU3
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L432KCU6
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2

STM32L432KCU3

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L432KCU6

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Swipe or click the button to explore more details Don't show this again
Part Number
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Budgetary Price (US$)*/Qty
Country of Origin
Timers (typ) (16-bit)
Timers (typ) (32-bit)
Number of Channels (typ)
Number of Channels (typ)
Number of Channels (typ)
D/A Converters (typ) (12-bit)
Comparator
I/Os (High Current)
CAN
CAN FD (typ)
SPI (typ)
I2S (typ)
USART (typ)
UART (typ)
Integrated op-amps
SMPS
min
max
STM32L432KCU3 Available at distributors

Distributor availability of STM32L432KCU3

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
3A991.a.2 NEC Tray UFQFPN 32 5x5x0.55 mm - -

CHINA

5

1

10

-

-

2

2

26

1

-

2

-

2

-

1

-

STM32L432KCU6 Available at distributors

Distributor availability of STM32L432KCU6

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
3A991.a.2 NEC Tray UFQFPN 32 5x5x0.55 mm -40 85

CHINA

5

1

10

-

-

2

2

26

1

-

2

-

2

-

1

-

STM32L432KCU3 Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L432KCU3

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

CHINA

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

D/A Converters (typ) (12-bit):

2

Comparator:

2

I/Os (High Current):

26

CAN:

1

CAN FD (typ):

-

SPI (typ):

2

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

Distributor Name

Distributor reported inventory date:

STM32L432KCU6 Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L432KCU6

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

CHINA

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

D/A Converters (typ) (12-bit):

2

Comparator:

2

I/Os (High Current):

26

CAN:

1

CAN FD (typ):

-

SPI (typ):

2

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

Distributor Name

Distributor reported inventory date:

Swipe or click the button to explore more details Don't show this again

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors