STM32L433CCT3 - 80MHz Cortex-M4 MCU | STMicroelectronics
부품 번호: STM32L433CCT3 ✓ 활성STM32L433CCT3 개요
A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripherals, and communication interfaces on one device. The STM32L433 belongs to the STM32L4 series of low-power microcontrollers. This product type sits within the hierarchy of embedded processor, microcontroller, 32-bit MCU, and power-managed semiconductor, providing more computation than an 8-bit MCU while supporting efficient low-power operation.
Principal features include a 32-bit Cortex-M4 core with floating-point unit, up to 100 DMIPS, USB full-speed support, LCD controller capability, and an external switched-mode power supply option. The device also includes backup-domain features suited to low-power products: the manufacturer lists 200 nA consumption in VBAT mode for the real-time clock and 32 backup registers of 32 bits each. Its memory configuration provides 256 Kbytes of Flash for firmware and 64 KB of SRAM for working data.
The STM32L433CC family combines conventional embedded-control capability with energy-conscious modes and integrated connectivity. USB full-speed and LCD support make the device useful for compact human-interface products, while the Cortex-M4 floating-point unit accelerates control algorithms, filtering, and general signal-processing tasks. The 1.71 V minimum operating voltage also permits designs powered from a single Li-ion cell with an appropriate regulator.
Typical applications include low-power sensor nodes, industrial condition-monitoring equipment, compact medical-control modules, USB-connected data loggers, energy meters, and LCD-equipped handheld products. In each case, the MCU can execute real-time control functions while retaining USB connectivity and multiple low-power operating states to extend battery life.
A principal design consideration is validating the exact peripheral assignment, boot configuration, and pin multiplexing for the assembled PCB. Use the manufacturer pin-description table when assigning alternate functions and confirm the selected regulator meets both the 1.71 V to 3.6 V operating range and peripheral-specific supply requirements.
This product overview combines the STM32L433CC family architecture, package information, low-power characteristics, and replacement analysis to support early design decisions. For an exact PCB replacement, verify pin functions, boot settings, firmware device configuration, temperature grade, and package orientation against the manufacturer datasheet.
드롭인 대체품: STM32L433CCT3 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: STM32L433CCT3 (동일 폼 팩터 및 풋프린트) — 차이점: External SMPS Support.
STM32L433CCT6TR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
STM32L443CCT6TR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
STM32L433CCT3TR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
STM32L433CCT6
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →STM32L433CBT6TR
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
STM32L433CCT3 최대 정격 & 전기적 특성
| Product Type | 32-bit ultra-low-power microcontroller |
| Processor Core | Arm Cortex-M4 with floating-point unit |
| Instruction Set | 32-bit RISC |
| Maximum CPU Frequency | 80 MHz |
| Maximum Performance | 100 DMIPS |
| Flash Memory | 256 KB |
| SRAM | 64 KB |
| 동작 공급 전압 | 1.71 V to 3.6 V |
| Family Temperature Range Options | -40 °C to 85 °C, 105 °C, or 125 °C |
| VBAT Mode Current | 200 nA |
| Backup Registers | 32 registers x 32 bits |
| USB Support | USB full-speed |
| LCD Support | Yes |
| External SMPS Support | Yes |
| 패키지 | 48-LQFP, 7 x 7 mm |
| 실장 유형 | Surface mount |
STM32L433CCT3 48-lqfp, 7 x 7 mm 핀 구성 가이드
STM32L433CCT3(48-lqfp, 7 x 7 mm 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: STM32L433CCT3.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
STM32L433CCT3 적합 용도: 6 애플리케이션s: Industrial Sensor and Condition Monitoring, USB Connected Data Logger, Battery-Powered Environmental Monitor, LCD-Equipped Control Panel, Compact Medical-Control Module, Low-Power Energy Meter.
Industrial Sensor and Condition Monitoring
The STM32L433CCT3 fits industrial sensor nodes that combine periodic measurement, local signal conditioning, and long standby periods. Its 80 MHz Cortex-M4 core can process sensor data and run control logic, while 256 KB of Flash provides room for application firmware, calibration tables, and a USB communications stack. The 64 KB SRAM supports working buffers without requiring external memory in many designs. Its 1.71 V to 3.6 V operating range also simplifies low-voltage sensor-chain design. The important engineering trade-off is that the microcontroller’s USB, LCD, and digital peripherals must remain disabled in the lowest-power states so the system does not sacrifice battery life for unnecessary digital activity.
USB Connected Data Logger
The STM32L433CCT3 is well suited to USB full-speed data loggers that transfer stored measurements to a host computer. Its 256 KB Flash can hold firmware and a bounded event log, while the 80 MHz Cortex-M4 processor provides sufficient headroom for sampling, timestamping, and basic data reduction. USB full-speed support permits a direct wired interface without adding a separate USB controller. A practical design should reserve the required USB routing area, maintain controlled impedance, and include the specified USB transceiver and filtering network. Compared with a higher-power microcontroller, the STM32L4 family can reduce active-system energy when the logger spends substantial time in a low-power state between transfers.
Battery-Powered Environmental Monitor
The STM32L433CCT3 supports compact environmental monitors that periodically acquire temperature, humidity, or gas-sensor data and remain idle for long intervals. The 200 nA VBAT-mode current listed for the family supports retention of the real-time clock and 32 backup registers when the main supply is removed. Its 64 KB SRAM is adequate for buffering sampled channels, while the 256 KB Flash supports firmware and calibration data. The 1.71 V minimum operating voltage allows operation from a regulated single-cell-derived rail. Designers should calculate average current from the active acquisition time, standby duration, radio or USB activity, and sensor-heater duty cycle rather than relying on the VBAT figure as the complete application consumption.
LCD-Equipped Control Panel
The STM32L433CCT3 fits compact control panels that combine a local LCD, pushbutton or touch input, and status indication. Its integrated LCD-controller capability can drive compatible panels, while the Cortex-M4 floating-point unit can execute control calculations and display-formatting logic. The 80 MHz operating speed leaves processing margin for a responsive user interface without requiring a separate display controller. The 48-LQFP package provides a manageable number of external connections for GPIO, communications, and power distribution. Because LCD-panel timing and segment or pixel counts vary by display, the engineer should verify the selected panel interface, bias scheme, and pin assignment against the manufacturer datasheet before finalizing the PCB.
Compact Medical-Control Module
The STM32L433CCT3 can serve as the control processor in a compact medical or diagnostic accessory where low power, local computation, and USB connectivity are required. The 80 MHz Cortex-M4 core and floating-point unit support filtering and control-loop calculations, while 256 KB Flash and 64 KB SRAM fit typical embedded control firmware without an external memory device in many configurations. USB full-speed provides a service and data path, and the 1.71 V to 3.6 V supply range supports tightly integrated power architecture. Medical use still requires application-specific risk assessment, validation, and compliance; selecting this microcontroller does not itself establish compliance with any medical-device standard.
Low-Power Energy Meter
The STM32L433CCT3 is appropriate for energy-metering front ends that sample voltage or current and perform local calculations while maintaining low standby consumption. Its 80 MHz Cortex-M4 processor can execute digital signal-processing and compensation routines, and 256 KB Flash accommodates firmware, tables, and configuration data. The 64 KB SRAM can hold sample buffers and intermediate results. Because metering accuracy depends on analog front-end design as well as the MCU, the device should not be evaluated independently of sensor resolution, gain, antialias filtering, reference accuracy, and calibration. Low-power operation is strongest when the measurement cadence and display or communications duty cycle are explicitly included in the average-current calculation.
엔지니어링 참조 데이터: STM32L433CCT3 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | STM32L433CCT6TR | STM32L443CCT6TR | STM32L433CCT3TR | STM32L433CCT6 | STM32L433CBT6TR |
|---|---|---|---|---|---|---|
| Package | 48-LQFP, 7 x 7 mm | 48-LQFP, same footprint | 48-LQFP, same footprint | 48-LQFP, same footprint | 48-LQFP, same footprint | 48-LQFP, same footprint |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Processor 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 |
| Maximum Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB, 50% less |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Operating Supply Voltage | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V |
| USB Full-Speed Support | Yes | Yes | Yes | Yes | Yes | Yes |
| Special Feature | External SMPS support | External SMPS support | External SMPS support; additional connectivity varies by device | External SMPS support | External SMPS support | External SMPS support |
주요 차별점
- Higher on-device Flash capacity than the CBT family alternative (vs STM32L433CBT6TR)
- Direct same-family connectivity configuration (vs STM32L443CCT6TR)
- Identical core and memory configuration to the T6 family variant (vs STM32L433CCT6TR)
설계 노트
Design the supply network for the full 1.71 V to 3.6 V operating range and place the manufacturer-recommended bypass capacitance close to the corresponding supply pins. Verify startup behavior, load transients, and brownout margins across the system voltage range. The listed 200 nA VBAT mode applies to the RTC and backup-register retention domain, so the main regulator still requires a leakage-aware design for battery-powered products.
Use the datasheet pin-description table to assign every package position, including SWD, reset, boot, oscillator, USB, LCD, and supply functions. Check alternate-function conflicts in the device configuration rather than treating all multiplexed pins as independent. Preserve the manufacturer-recommended grounding, decoupling, and clock-layout practices, and keep sensitive analog or crystal routing away from high-current switching nodes.
Do not treat a related STM32L4 order code as an unconditional drop-in replacement. The 128 KB Flash in STM32L433CBT6TR is 50% below the STM32L433CCT3 configuration, while T3 and T6 suffixes indicate different temperature grades. For every alternative, confirm package dimensions, pin functions, boot behavior, firmware device identification, peripheral mix, and temperature limits before approving a substitution.
Separate analog measurement, digital communication, and clock paths according to the application’s signal-integrity requirements. USB full-speed routing should use a controlled-impedance PCB stack-up, short return paths, and the required passive filtering network. For LCD or sensor interfaces, account for edge-rate-induced current and crosstalk rather than routing all peripherals as ordinary low-frequency signals.
규정 준수 정보
No specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was identified for the exact order code. Confirm product and packaging declarations with STMicroelectronics before a regulated production release.