README.md
1# STM32L433-Nucleo BSP Introduction
2
3[中文](README_zh.md)
4
5## MCU: STM32L433RC @80MHz, 256KB FLASH, 64KB RAM
6
7The 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.
8
9The 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.
10The STM32L433xx devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall.
11The 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.
12In 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.
13They also feature standard and advanced communication interfaces.
14The 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.
15Some 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.
16The STM32L433xx family offers eight packages from 48 to 100-pin packages.
17
18#### KEY FEATURES
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20- Ultra-low-power with FlexPowerControl
21 - 1.71 V to 3.6 V power supply
22 - -40 °C to 85/105/125 °C temperature range
23 - 200 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
24 - 8 nA Shutdown mode (5 wakeup pins)
25 - 28 nA Standby mode (5 wakeup pins)
26 - 280 nA Standby mode with RTC
27 - 1.0 μA Stop 2 mode, 1.28 μA with RTC
28 - 84 μA/MHz run mode (LDO Mode)
29 - 36 μA/MHz run mode (@3.3 V SMPS Mode)
30 - Batch acquisition mode (BAM)
31 - 4 μs wakeup from Stop mode
32 - Brown out reset (BOR)
33 - Interconnect matrix
34- 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
35- Performance benchmark
36 - 1.25 DMIPS/MHz (Drystone 2.1)
37 - 273.55 CoreMark® (3.42 CoreMark/MHz @ 80 MHz)
38- Energy benchmark
39 - 253 ULPBench® score
40- Clock Sources
41 - 4 to 48 MHz crystal oscillator
42 - 32 kHz crystal oscillator for RTC (LSE)
43 - Internal 16 MHz factory-trimmed RC (±1%)
44 - Internal low-power 32 kHz RC (±5%)
45 - Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than ±0.25 % accuracy)
46 - Internal 48 MHz with clock recovery
47 - 2 PLLs for system clock, USB, audio, ADC
48- Up to 83 fast I/Os, most 5 V-tolerant
49- RTC with HW calendar, alarms and calibration
50- LCD 8× 40 or 4× 44 with step-up converter
51- Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors
52
53- 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
54- Memories
55 - Up to 256 KB single bank Flash, proprietary code readout protection
56 - 64 KB of SRAM including 16 KB with hardware parity check
57 - Quad SPI memory interface
58- Rich analog peripherals (independent supply)
59 - 1x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
60 - 2x 12-bit DAC output channels, low-power sample and hold
61 - 1x operational amplifier with built-in PGA
62 - 2x ultra-low-power comparators
63- 17x communication interfaces
64 - USB 2.0 full-speed crystal less solution with LPM and BCD
65 - 1x SAI (serial audio interface)
66 - 3x I2C FM+(1 Mbit/s), SMBus/PMBus
67 - 4x USARTs (ISO 7816, LIN, IrDA, modem)
68 - 1x LPUART (Stop 2 wake-up)
69 - 3x SPIs (and 1x Quad SPI)
70 - CAN (2.0B Active) and SDMMC interface
71 - SWPMI single wire protocol master I/F
72 - IRTIM (Infrared interface)
73- 14-channel DMA controller
74- True random number generator
75- CRC calculation unit, 96-bit unique ID
76- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
77- All packages are ECOPACK2® compliant
78
79
80
81## Read more
82
83| Documents | Description |
84| :----------------------------------------------------------: | :----------------------------------------------------------: |
85| [STM32_Nucleo-64_BSP_Introduction](../docs/STM32_Nucleo-64_BSP_Introduction.md) | How to run RT-Thread on STM32 Nucleo-64 boards (**Must-Read**) |
86| [STM32L433RC ST Official Website](https://www.st.com/en/microcontrollers-microprocessors/stm32l433rc.html#documentation) | STM32L433RC datasheet and other resources |
87
88
89
90## Maintained By
91
92[Sunwancn](https://github.com/Sunwancn), <bwsheng2000@163.com>
93
94
95
96## Translated By
97
98Meco Man @ RT-Thread Community
99
100> jiantingman@foxmail.com
101>
102> https://github.com/mysterywolf
