HC32L031 - 48MHz Cortex-M0+ 64KB Flash MCU | XHSC (小华)
부품 번호: HC32L031 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.21 | $0.21 |
| 10 | $0.19 | $1.90 |
| 100 | $0.16 | $16.00 |
| 500 | $0.13 | $65.00 |
| 1,000 | $0.11 | $110.00 |
HC32L031 개요
A low-dropout (LDO) linear regulator is an analog integrated circuit that maintains a tightly regulated output voltage even when the input-to-output voltage difference is small (the dropout voltage). LDOs belong to the broader family of linear regulators, which in turn are a subset of voltage regulators and power management ICs used in virtually every powered electronic system. The HC32L031 sits one level above: it is a microcontroller that *uses* internal LDOs to power its core and analog domains from a single external supply.
Key differentiating features include a deeply engineered power management system with 0.65 µA Deep-Sleep current (all clocks off, IO retention, IO interrupt wake-up, full RAM/CPU state retention) and 45 µA/MHz active current at 3 V / 48 MHz with peripherals off. The device includes multiple low-power modes, an integrated LDO regulator, and Brown-Out Reset (BOR). Peripheral highlights include a 12-bit SAR ADC, multiple timers, UART, SPI, I²C, and an integrated LCD segment driver (variant dependent), making it highly competitive in metering and HMI applications.
Architecturally, the HC32L031 leverages the Cortex-M0+ core (Thumb-2 instruction set, single-cycle IO) and pairs it with a high-efficiency on-chip voltage regulator to minimize dynamic power. The Flash is organized with erase/write protection to support secure in-field firmware updates.
Typical applications include battery-powered IoT sensors, smart water/gas/heat meters, wearable health devices, low-power wireless sensor nodes, BLE/Zigbee beacon peripherals, electronic shelf labels, and consumer appliances requiring always-on sensing with multi-year battery life. Its wide 1.8 V–5.5 V input range also suits industrial 5 V control boards.
When designing with the HC32L031, select the package variant (LQFP-32 F8TB or QFN-32 F8UB) that matches your PCB footprint and thermal target. Pay attention to decoupling: place 100 nF + 4.7 µF ceramic capacitors close to VDD/VSS pins to keep the internal LDO stable during load transients.
This page synthesizes distributor pricing, package variants, drop-in alternatives, and practical design notes not consolidated in any single manufacturer datasheet, providing actionable engineering value for selection and procurement.
드롭인 대체품: HC32L031 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
HC32L130F8TB
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
HC32L030F8TB
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
HC32L031F8UB
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
CW32L031F8UB
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
STM32G031F8P6Q2
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
HC32L031 최대 정격 & 전기적 특성
| Core | Arm Cortex-M0+ (32-bit) |
| 최대 클록 주파수 | 48 MHz |
| Program Flash | 64 KB |
| SRAM | 8 KB |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Deep-Sleep Current | 0.65 µA (typ, 3 V, IO retention, all clocks off) |
| Active Current | 45 µA/MHz (typ, 3 V, 48 MHz, peripherals off) |
| Communication Interfaces | UART, SPI, I²C |
| Timers | Multiple (count [DATA_TIMER + WDG] |
| 패키지 | LQFP-32 (F8TB) or QFN-32 4x4 mm (F8UB) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Internal Voltage Regulator | Integrated LDO for core power |
| Reset / Brown-Out | POR / BOR (Brown-Out Reset) |
| LCD Driver (Comfort Variant) | Segment LCD driver (variant-dependent) |
HC32L031 핀 구성
| 핀 1 | VDD — Main power supply input (1.8 V to 5.5 V) |
| 핀 2 | PA0 — GPIO / Wake-up / ADC input |
| 핀 3 | PA1 — GPIO / ADC input |
| 핀 4 | PA2 — GPIO / UART1_TX |
| 핀 5 | PA3 — GPIO / UART1_RX |
| 핀 6 | PA4 — GPIO / SPI_NSS |
| 핀 7 | PA5 — GPIO / SPI_SCK |
| 핀 8 | PA6 — GPIO / SPI_MISO |
| 핀 9 | PA7 — GPIO / SPI_MOSI |
| 핀 10 | VSS — Ground |
| 핀 11 | PB0 — GPIO / I2C_SDA |
| 핀 12 | PB1 — GPIO / I2C_SCL |
| 핀 13 | PB2 — GPIO / Timer channel |
| 핀 14 | PB3 — GPIO / Timer channel |
| 핀 15 | PB4 — GPIO / External interrupt |
| 핀 16 | PB5 — GPIO / External interrupt |
| 핀 17 | PB6 — GPIO / UART2_TX |
| 핀 18 | PB7 — GPIO / UART2_RX |
| 핀 19 | PC0 — GPIO / Segment LCD |
| 핀 20 | PC1 — GPIO / Segment LCD |
| 핀 21 | PC2 — GPIO / Segment LCD |
| 핀 22 | PC3 — GPIO / Segment LCD |
| 핀 23 | PC4 — GPIO / Segment LCD |
| 핀 24 | PC5 — GPIO / Segment LCD |
| 핀 25 | PC6 — GPIO / Segment LCD |
| 핀 26 | PC7 — GPIO / Segment LCD |
| 핀 27 | NRST — External reset input (active low) |
| 핀 28 | SWDIO — Serial wire debug data |
| 핀 29 | SWCLK — Serial wire debug clock |
| 핀 30 | BOOT0 — Boot mode select |
| 핀 31 | VDDA — Analog power supply (tie to VDD) |
| 핀 32 | VSSA — Analog ground (tie to VSS) |
일반적인 애플리케이션
HC32L031 적합 용도: 6 애플리케이션s: Smart Water/Gas/Heat Metering, Battery-Powered IoT Sensor / Edge Node, Wearable Health & Fitness Devices, Industrial 5 V Sensor & Control Boards, Electronic Shelf Labels (ESL) & Retail Displays, Consumer Appliance HMI (Rice Cookers, Washing Machines, Air Purifiers).
Smart Water/Gas/Heat Metering
The HC32L031 fits metering because its 0.65 µA Deep-Sleep current (3 V, all clocks off, IO retention, IO interrupt wake-up) and 45 µA/MHz active draw at 48 MHz keep total energy budget low enough for multi-year lithium battery operation. The integrated 12-bit ADC reads flow or temperature sensors, while UART/SPI/I²C connect to wireless M-Bus, NB-IoT, or LoRaWAN modules. The integrated segment LCD driver (variant-dependent) directly drives the meter's numeric display without an external driver IC, reducing BOM cost. BOR and POR supervise the single LiSOCl2 cell from 1.8 V to 5.5 V across its discharge curve, and 64 KB Flash hosts the metering firmware plus calibration tables for IEC 62056 / EN 13757 compliance.
추천
Battery-Powered IoT Sensor / Edge Node
Always-on wireless sensor nodes demand microamp-level sleep current and fast wake-up — the HC32L031's 0.65 µA Deep-Sleep with full RAM retention lets a coin-cell node sleep for years between events while keeping calibration data and TLS context alive. The 48 MHz Cortex-M0+ core runs sensor fusion, encryption, and LoRa/BLE stack preparation in active mode at 45 µA/MHz (3 V, peripherals off). Its 1.8 V–5.5 V input tolerates fresh Li-ion (4.2 V) down to end-of-life alkaline (1.8 V) without a boost regulator. UART, SPI, and I²C connect directly to common radio modules (SX1276, nRF24, CC2640) without level shifters, and 64 KB Flash hosts Contiki-/RIOT-/Zephyr-class lightweight stacks.
추천
Wearable Health & Fitness Devices
Wearables need a small-footprint MCU that wakes briefly to sample heart rate or motion sensors and then returns to deep sleep — exactly the operating pattern the HC32L031's 0.65 µA Deep-Sleep with IO interrupt wake-up supports. The QFN-32 (4x4 mm) variant (HC32L031F8UB) fits inside wristbands and patches where board space is at a premium. The 12-bit ADC captures PPG and temperature analog signals, while SPI/I²C connect to optical heart-rate sensors and 6-axis IMUs. 8 KB SRAM buffers compressed biosignal data between wake events, and 64 KB Flash holds firmware with enough headroom for firmware-over-the-air (FOTA) staging. Operating from 1.8 V to 5.5 V accommodates direct connection to single-cell LiPo charging profiles.
추천
Industrial 5 V Sensor & Control Boards
Industrial 24 V / 5 V systems benefit from the HC32L031's 1.8 V–5.5 V input range, which lets the MCU share a 5 V rail with analog sensors and digital logic without level translation. The 48 MHz Cortex-M0+ core executes PID control loops, sensor reads, and Modbus RTU framing in real time. BOR/POR handle brown-out events common on long 24 V industrial harnesses, and the integrated LDO core regulator keeps the silicon stable across noisy supply transients. 64 KB Flash supports IEC 61131-3-style function-block firmware and field diagnostics logs, while 8 KB SRAM holds Modbus buffers and calibration tables for harsh-environment calibration.
추천
Electronic Shelf Labels (ESL) & Retail Displays
ESL tags spend 99% of their life in deep sleep and wake briefly to update an e-ink display — the HC32L031's 0.65 µA Deep-Sleep current extends coin-cell life into multi-year range. Its SPI connects directly to e-ink panels, while the integrated segment LCD driver (variant-dependent) supports hybrid e-ink + segmented LCD retail signage. Sub-48 MHz active bursts update display content in milliseconds before returning to sleep. Operating from 1.8 V to 5.5 V tolerates CR2032 discharge curves down to end-of-life voltage without boost converters, and 64 KB Flash holds graphical assets and RF protocol stacks.
추천
Consumer Appliance HMI (Rice Cookers, Washing Machines, Air Purifiers)
White-goods HMIs need an MCU that drives a segment LCD or LED matrix, reads button/keypad inputs, and stays in standby for years — the HC32L031's segment LCD driver and 0.65 µA Deep-Sleep with IO interrupt wake-up on capacitive-touch-capable pins fit this duty cycle. The 1.8 V–5.5 V input range accepts 3.3 V or 5 V appliance rails directly, and the integrated 12-bit ADC reads NTC temperature sensors and humidity sensors in real time. 64 KB Flash is large enough to host multilingual UI assets, fault logging, and BLE/Wi-Fi co-processor command stacks. The LQFP-32 package is friendly to wave-soldered consumer production lines.
추천
추천 제품 요약
엔지니어링 참조 데이터: HC32L031 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | HC32L130F8TB | HC32L030F8TB | HC32L031F8UB | CW32L031F8UB | STM32G031F8P6Q2 |
|---|---|---|---|---|---|---|
| Brand | XHSC (小华半导体) | XHSC (小华半导体) | XHSC (小华半导体) | XHSC (小华半导体) | Wuhan Xinyuan (CW) | STMicroelectronics |
| Package | LQFP-32 (7x7 mm, 0.8 mm pitch) | LQFP-32 — same | LQFP-32 — same | QFN-32 (4x4 mm) — variant | QFN-32 — same family | QFN-32 — same footprint tier |
| Core | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ |
주요 차별점
- Ultra-low Deep-Sleep current with full state retention (vs STM32G031F8P6Q2)
- Wider 1.8 V to 5.5 V supply range vs STM32G0 family (vs STM32G031F8P6Q2)
- Integrated segment LCD driver on selected variants (vs HC32L110 family)
- Aggressive pricing in Chinese market channel (vs STM32G031F8P6Q2)
설계 노트
Estimated: at 3.3 V with the Cortex-M0+ core active at 48 MHz and peripherals off, the HC32L031 draws ~45 µA/MHz x 48 MHz = 2.16 mA plus peripheral contributions. In Deep-Sleep at 3 V the part draws 0.65 µA. To minimize sleep current, disable unused peripherals in software, set all unused GPIOs to analog input mode (no Schmitt trigger current), and avoid floating pins. Place a 100 nF + 4.7 µF ceramic decoupling pair within 3 mm of VDD/VSS pins.
For the QFN-32 (4x4 mm) HC32L031F8UB variant, the exposed pad (EP) on the underside must be soldered to a copper pour connected to VSS for both thermal dissipation and electrical grounding. Use an array of thermal vias (8–12 vias, 0.3 mm drill, 0.5 mm pitch) under the EP to a bottom-layer ground plane. For the LQFP-32 variant, route VDD/VSS as wide traces and add a 100 nF cap adjacent to each VDD pin pair.
Common pitfalls: (1) Exceeding 5.5 V on VDD destroys the part — add a TVS diode for hot-plug robustness. (2) Driving segment-LCD pins above the LCD bias voltage causes latch-up; check the LCD bias network before applying power. (3) The SWDIO/SWCLK pins share GPIOs — if SWD is disabled in firmware, lock yourself out without a pre-programmed bootloader. (4) Brown-out reset thresholds must be configured before the first power-up event; the default may not match your battery chemistry.
Keep the 32 kHz external crystal (if used) traces short and symmetric, surrounded by a ground guard ring, to minimize clock jitter that would otherwise increase average active current. Route the ADC analog inputs away from switching nodes (DC-DC, segment LCD COM) and add a small RC filter on analog inputs if the sensor signal is high-impedance. The integrated LDO is sensitive to load transients — bulk decoupling with 4.7 µF X7R near the VDD pins stabilizes the core rail during peripheral wake events.
규정 준수 정보
RoHS compliance confirmed via JLCPCB Assembly listing (HC32L031F8TB and HC32L031F8UB marked ROHS). AEC-Q100 not stated — confirm with XHSC for automotive-grade variants. REACH compliance inferred from RoHS compliance per JLCPCB; full REACH SVHC declaration not in this dataset.
