STM32L412KBT6

Ultra-low-power with FPU Arm Cortex-M4 MCU 80 MHz with 128 Kbytes of Flash memory, USB

Parameters

Supply Voltage Min Volt	1.71
Supply Voltage Max Volt	3.6
Operating Temp Min Celsius	-40.0
Operating Temp Max Celsius	85.0
Core	Arm Cortex-M4
ECCN US	3A991.a.2
ECCN EU	NEC
Packing Type	Tray
RoHs compliant	Ecopack2
Grade	Industrial
Package Name	LQFP 32 7x7x1.4 mm

Description

The STM32L412xx devices are 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 that supports all Arm® single-precision data-processing...
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The STM32L412xx devices are 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 that 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 STM32L412xx devices embed high-speed memories (flash memory up to 128 Kbyte, 40 Kbyte of SRAM), a Quad SPI flash memories interface (available on all packages) 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 STM32L412xx devices embed several protection mechanisms for embedded flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall.

The devices offer two fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, 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 12 capacitive sensing channels are available.

They also feature standard and advanced communication interfaces, namely three I2Cs, two SPIs, three USARTs and one Low-Power UART, one USB full-speed device crystal less.

The STM32L412xx operates in the -40 to +85 °C (+105 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to 3.6 V V_DD power supply when using internal LDO regulator and a 1.00 to 1.32V V_DD12 power supply when using external SMPS supply. A comprehensive set of power-saving modes makes possible the design of low-power applications.

Some independent power supplies are supported: analog independent supply input for ADC, OPAMP and comparator. A VBAT input makes it possible to backup the RTC and backup registers. Dedicated V_DD12 power supplies can be used to bypass the internal LDO regulator when connected to an external SMPS.

The STM32L412xx family offers six packages from 32 to 64-pin packages.

Key features

Key features
Includes ST state-of-the-art patented technology Ultra-low-power with FlexPowerControl 1.71 V to 3.6 V power supply -40 °C to 85/125 °C temperature range 300 nA in V_BAT mode: supply for RTC and 32x32-bit backup registers 16 nA Shutdown mode (4 wakeup pins) 32 nA Standby mode (4 wakeup pins) 245 nA Standby mode with RTC 0.7 µA Stop 2 mode, 0.95 µA with RTC 79 µA/MHz run mode (LDO Mode) 28 μA/MHz run mode (@3.3 V SMPS 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 442 ULPMark-CP^® 165 ULPMark-PP^® Clock Sources 4 to 48 MHz crystal oscillator 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 PLL for system clock Up to 52 fast I/Os, most 5 V-tolerant RTC with HW calendar, alarms and calibration Up to 12 capacitive sensing channels: support touchkey, linear and rotary touch sensors 10x timers: 1x 16-bit advanced motor-control, 1x 32-bit and 2x 16-bit general purpose, 1x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer Memories 128 KB single bank flash, proprietary code readout protection 40 KB of SRAM including 8 KB with hardware parity check Quad SPI memory interface with XIP capability Rich analog peripherals (independent supply) 2x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 µA/Msps 1x operational amplifier with built-in PGA 1x ultra-low-power comparator 12x communication interfaces USB 2.0 full-speed crystal less solution with LPM and BCD 3x 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) 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

In stock

Quantity	$ per unit	Savings
1-9	$3.31	0%
10-24	$2.56	23%
25-99	$2.36	29%
100-249	$2.24	32%
250-499	$2.14	35%
500-999	$2.06	38%
1000-10000	$2.01	39%
10000 +	Contact sales

$3.31