| PartNumber | STM32L151RBT6ATR | STM32L151RBT6A | STM32L151RBT6 |
| Description | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M3 MCU with 128 Kbytes Flash, 32 MHz CPU, USB | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M3 MCU with 128 Kbytes Flash, 32 MHz CPU, USB | ARM Microcontrollers - MCU 32-Bit Arm Cortex M3 128kb UltralowPower |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Package / Case | LQFP-64 | LQFP-64 | - |
| Series | STM32L151RB-A | STM32L151RB-A | STM32L151RB |
| Operating Supply Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V |
| 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 | - |
| Moisture Sensitive | Yes | - | Yes |
| Processor Series | STM32L1 | STM32L1 | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 1000 | 960 | 960 |
| 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 | - |
| RoHS | - | Y | Y |
| Unit Weight | - | 0.091712 oz | 0.012088 oz |
| Core | - | - | ARM Cortex M3 |
| Data Bus Width | - | - | 32 bit |
| Maximum Operating Temperature | - | - | + 85 C |
| Packaging | - | - | Tray |
| Interface Type | - | - | I2C, SPI, USART |