| PartNumber | STM32L151C6U6A | STM32L151C6U6 | STM32L151C6U6ATR |
| Description | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M3 MCU with 32 Kbytes Flash, 32 MHz CPU, USB | ARM Microcontrollers - MCU 32-Bit ARM Cortex 32kb Low Power MCU | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M3 MCU with 32 Kbytes Flash, 32 MHz CPU, USB |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | UFQPFN-48 | - | UFQPFN-48 |
| Series | STM32L151C6-A | STM32L151C6 | STM32L151C6-A |
| Core | ARM Cortex M3 | ARM Cortex M3 | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 32 MHz | - | - |
| Program Memory Size | 32 kB | - | - |
| Data RAM Size | 16 kB | - | - |
| Operating Supply Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Analog Supply Voltage | 1.65 V to 3.6 V | - | 1.65 V to 3.6 V |
| I/O Voltage | 1.65 V to 3.6 V | - | 1.65 V to 3.6 V |
| Processor Series | STM32L1 | - | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 1560 | 1560 | 2500 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | - | 3.6 V |
| Supply Voltage Min | 1.65 V | - | 1.65 V |
| Tradename | STM32 | - | STM32 |
| Unit Weight | 0.091712 oz | 0.009171 oz | - |
| Packaging | - | Tray | - |
| Moisture Sensitive | - | Yes | - |