STM32L433RCT6P STMicroelectronics 32bit MCU

STM32L433RCT6P Overview

The STM32L433xx 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 STM32L433xx devices embed high-speed memories (Flash memory up to 256 Kbyte, 64 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 STM32L433xx 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, an internal voltage reference buffer, 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 21 capacitive sensing channels are available. The devices also embed an integrated LCD driver 8x40 or 4x44, with internal step-up converter.
They also feature standard and advanced communication interfaces.
The STM32L433xx 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 VDD power supply when using internal LDO regulator and a 1.05 to 1.32V VDD12 power supply when using external SMPS 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, and 3.3 V dedicated supply input for USB. A VBAT input allows to backup the RTC and backup registers. Dedicated VDD12 power supplies can be used to bypass the internal LDO regulator when connected to an external SMPS.
The STM32L433xx family offers eight packages from 48 to 100-pin packages.

ECAD Model

Symbol

Footprint

Features

1.71 V to 3.6 V power supply
-40 °C to 85/105/125 °C temperature range
200 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
8 nA Shutdown mode (5 wakeup pins)
28 nA Standby mode (5 wakeup pins)
280 nA Standby mode with RTC
1.0 μA Stop 2 mode, 1.28 μA with RTC
84 μA/MHz run mode (LDO Mode)
36 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

253 ULPBench score

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
2 PLLs for system clock, USB, audio, ADC

Up to 83 fast I/Os, most 5 V-tolerant

RTC with HW calendar, alarms and calibration

LCD 8× 40 or 4× 44 with step-up converter

Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors

Applications

STM32L4

Specifications

Core Processor ARM Cortex M4
Speed 80MHz
Operating Temperature -40℃ ~ 85℃ (TA)
Program Memory Type FLASH
RAM Size 64K x 8
Number of I/O 52
Peripherals Brown-out Detect/Reset, DMA, LCD, PWM, WDT
Mounting Type Surface Mount
Oscillator Type Internal
Supplier Device Package 64-LQFP (10x10)
Package / Case 64-LQFP
Core Size 32-Bit
Connectivity CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB
Program Memory Size 256KB (256K x 8)
Data Converters A/D 16x12b; D/A 2x12b
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V