STM32L151CCT7DTR STMicroelectronics Integrated Circuit (Quad Flat Packages) In Stock
STM32L151CCT7DTR is an STMicroelectronics ultra-low-power 32-bit ARM Cortex-M3 microcontroller running at up to 24 MHz with integrated Flash, 12-channel DMA, ADC, DAC, and 37 I/O lines in a 48-pin LQFP package. It targets battery-powered IoT, wearable, and portable medical devices requiring minimal sleep-mode current consumption. Available globally in tape-and-reel packaging with fast worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat Packages
- Pin Count
- 48
- Lifecycle
- ACTIVE
- Datasheet
- STM32L151CCT7DTR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ARM Cortex-M3 core running at up to 24 MHz with ultra-low-power design optimized for battery-operated and energy-harvesting IoT nodes
- 12-channel DMA controller offloads data transfers from ADC, DAC, and peripherals without CPU intervention, extending battery life in sensor data logging applications
- Integrated ADC and DAC channels enable direct analog sensor interfacing and analog output generation without external conversion ICs
- 48-pin LQFP-48 package with 37 I/O lines provides high GPIO density in a compact 7 mm × 7 mm footprint for space-constrained portable designs
Applications
STM32L151CCT7DTR is designed for battery-powered wearable health monitors, IoT sensor nodes, and portable medical devices where the ARM Cortex-M3 core's ultra-low-power stop and standby modes maximize runtime on small LiPo or coin-cell batteries. Its 24 MHz clock, 12-channel DMA, ADC, and DAC allow simultaneous multi-sensor data acquisition and analog output generation without waking the CPU, making it ideal for environmental loggers, smart meters, and asset-tracking tags. The 37 I/O lines and 48-pin LQFP-48 package provide sufficient interface capacity for LCD segments, SPI flash, I2C sensors, and UART communications on a single compact PCB.
Specifications
| YTEOL | 8 |
| Has ADC | YES |
| Bit Size | 32 |
| CPU Family | CORTEX-M3 |
| Clock Frequency-Max | 24MHz |
| DAC Channels | YES |
| DMA Channels | YES |
| JESD-30 Code | S-PQFP-G48 |
| Number of DMA Channels | 12 |
| Number of I/O Lines | 37 |
| Number of Timers | 9 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | QFP48,.35SQ,20 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, LOW PROFILE, FINE PITCH |
| Qualification Status | Not Qualified |
| RAM (bytes) | 32768 |
| ROM (words) | 262144 |
| ROM Programmability | FLASH |
| Speed | 32MHz |
| Supply Current-Max | 9.6mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.31.00.25 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STM32L151CCT7DTR:
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 32MHz, CMOS, PQFP48
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 32MHz, CMOS, PQFP48
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 32MHz, CMOS, PQFP48
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 32MHz, CMOS, PQFP48
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M3 CPU, 32MHz, CMOS, PQFP48
Frequently Asked Questions
What CPU architecture and maximum clock speed does STM32L151CCT7DTR use, and how does this suit ultra-low-power designs?
STM32L151CCT7DTR uses a 32-bit ARM Cortex-M3 core clocked at up to 24 MHz, which provides enough processing headroom for BLE stack, AES encryption, and sensor fusion algorithms at active current well below 1 mA/MHz in run mode. The Cortex-M3 architecture also supports stop and standby modes with sub-1 µA consumption, allowing a coin-cell battery to sustain a sensor node for more than 1 year between wake cycles in typical IoT duty-cycle applications.
How many DMA channels does STM32L151CCT7DTR have, and how do they reduce CPU load in a multi-sensor data logging application?
STM32L151CCT7DTR integrates 12 DMA channels that can autonomously transfer ADC samples, SPI data, I2C frames, and UART bytes to and from memory without consuming CPU cycles. In a data logger sampling 4 ADC channels at 1 kHz, the DMA fills a 256-sample buffer entirely in the background, letting the Cortex-M3 core remain in sleep mode and wake only once per buffer to compress and store data, cutting active CPU time by more than 80% versus polling-based acquisition.
For a compact portable medical monitor, what does the 48-pin LQFP-48 package of STM32L151CCT7DTR offer in terms of I/O density?
The LQFP-48 package provides 37 general-purpose I/O lines in a 7 mm × 7 mm body with 0.5 mm pin pitch, which is sufficient to simultaneously drive a multiplexed 4-digit 7-segment LCD, communicate over SPI, I2C, and UART peripherals, and manage 4 analog input channels. The flat-quad layout also simplifies hand soldering during prototype assembly compared to BGA alternatives, while the 0.5 mm pitch is within the capability of standard PCB fabrication.
When is STM32L151CCT7DTR a stronger choice than STM32F103C8T6 for a battery-powered sensor design?
STM32L151CCT7DTR's ultra-low-power L1 series architecture delivers stop-mode current below 1 µA and run-mode consumption near 230 µA/MHz, compared to the STM32F103C8T6's several milliamps in run mode. For a sensor node on a 200 mAh coin cell targeting 12-month autonomy, the L151's power budget is 4× to 8× lower, directly translating to extended battery life. The integrated DAC and 12-channel DMA on the L151 also eliminate external ICs needed on the F103 for analog output and background data transfer tasks.
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