STM32L071KZU6TR STMicroelectronics Integrated Circuit (Quad Flat No-Lead) In Stock
Ultra-low-power 32-bit ARM Cortex-M0+ MCU with 192 KB flash, 20 KB SRAM, 6 KB EEPROM, integrated ADC and DMA, running up to 32 MHz, housed in a 32-pin QFN. Designed for battery-operated IoT and sensor node applications requiring long field life. In stock worldwide.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- STM32L071KZU6TR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.4640(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STM32L071KZU6TR?
- Ultra-low-power ARM Cortex-M0+ core at up to 32 MHz with multiple sub-microamp stop modes enables coin-cell or energy-harvesting operation for 10-year IoT sensor nodes
- 192 KB flash and 6 KB on-chip EEPROM eliminate external non-volatile storage cost, fitting complete LoRaWAN or Sigfox firmware stacks with data logging in one IC
- 32-pin QFN (UFQFPN-32) with DMA controller and integrated ADC supports multiple sensor interfaces simultaneously without CPU intervention, maximising active-mode power efficiency
What is STM32L071KZU6TR used for?
STM32L071KZU6TR is well suited for battery-powered IoT end-nodes such as wireless gas meters, environmental sensor badges, and asset-tracking tags where the MCU spends the majority of its time in a stop mode consuming below 1 µA and wakes briefly to acquire ADC data and transmit a LoRaWAN packet. Its 192 KB flash and 6 KB EEPROM also make it a cost-effective choice for wearable medical monitors and industrial wireless sensors that require firmware OTA updates and persistent configuration storage without an external memory chip.
What are the specifications of STM32L071KZU6TR?
| Factory Lead Time | 15Weeks |
| YTEOL | 9 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | NO |
| CPU Family | CORTEX-M0 |
| Clock Frequency-Max | 32MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | S-XQCC-N32 |
| Number of DMA Channels | 7 |
| Number of I/O Lines | 23 |
| Number of Timers | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | UNSPECIFIED |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| ROM (words) | 196608 |
| ROM Programmability | FLASH |
| Speed | 32MHz |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 1.65V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.25 |
| Country of Origin | Mainland China |
Where can I find the STM32L071KZU6TR datasheet?
STM32L071KZU6TR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STM32L071KZU6TR?
Compatible alternatives and drop-in replacements for STM32L071KZU6TR:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, QCC32
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, QCC32
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, QCC32
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, QCC32
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M0 CPU, 32MHz, CMOS, QCC32
Frequently Asked Questions
How does STM32L071KZU6TR's stop-mode current enable a 10-year LoRaWAN sensor node from a 3.6 V lithium AA battery?
In Stop mode with RTC active, STM32L071KZU6TR typically draws below 1 µA. For a sensor that wakes every 10 minutes, samples an ADC reading, and transmits a LoRaWAN packet consuming about 10 mAs per cycle, the average current over a 10-minute sleep period is approximately 1.7 µA. A 2400 mAh lithium AA cell divided by 1.7 µA yields roughly 160,000 hours, or 18 years—comfortably exceeding a 10-year design target even after accounting for battery derating and radio peak currents.
For a firmware-over-the-air update scenario, how does the 192 KB flash on STM32L071KZU6TR accommodate a dual-bank OTA scheme?
With 192 KB total flash, a dual-bank OTA scheme can allocate 96 KB to the active firmware and 96 KB to the incoming image. This leaves sufficient space for a 4 KB bootloader and 6 KB EEPROM for configuration, fitting a complete LoRaWAN class A stack with AES-128 encryption plus the OTA bootloader into a single chip. The STM32 bootloader interface via USART further simplifies initial programming without a dedicated SWD programmer in field-deployed units.
What is the maximum clock frequency of STM32L071KZU6TR, and how does it compare to STM32L031 for real-time processing tasks?
STM32L071KZU6TR runs at up to 32 MHz, the same maximum as the STM32L031, but it provides 6× more flash (192 KB vs 32 KB) and 4× more SRAM (20 KB vs 8 KB). For tasks requiring higher code density—such as implementing a full LPWAN stack alongside sensor drivers and data processing—the L071 avoids external SPI flash and its associated SPI bus overhead, keeping the system in low-power single-chip operation rather than waking a flash chip for code execution.
How does the integrated DMA controller in STM32L071KZU6TR reduce active CPU time in a multi-sensor acquisition design?
The DMA controller can autonomously move ADC conversion results, USART receive bytes, and SPI sensor bursts directly to SRAM while the Cortex-M0+ core remains in sleep, reducing CPU active time by 30% to 60% in typical sensor acquisition firmware. For example, a 16-sample ADC burst at 32 MHz that would normally take 500 µs of CPU execution can be DMA-offloaded while the core idles at under 10 µA, shaving microamp-hours from the per-sample energy budget over millions of measurement cycles.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $3.2100 | $321.00 |
| 250+ | $3.0500 | $762.50 |
| 500+ | $2.7300 | $1365.00 |
| 3000+ | $2.6810 | $8042.97 |
| 12000+ | $2.4767 | $29720.64 |
| 24000+ | $2.4640 | $59134.80 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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