| PartNumber | STM32L151RCT6 | STM32L151RCT6A | STM32L151RCT6ATR |
| Description | ARM Microcontrollers - MCU Ultra Low M3 ARM 128 Kbytes 32 MHz | ARM Microcontrollers - MCU STM32L15 Low Power M3 256kB 32MHz MCU | ARM Microcontrollers - MCU 32B ARM Cortex-M3 256Kb Flsh 32MHz CPU |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | LQFP-64 | LQFP-64 | LQFP-64 |
| Series | STM32L151RC | STM32L151RC-A | STM32L151RC-A |
| Core | ARM Cortex M3 | ARM Cortex M3 | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 32 MHz | 32 MHz | - |
| Program Memory Size | 256 kB | 256 kB | - |
| Data RAM Size | 32 kB | 32 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 |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tray | Tray | Reel |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Analog Supply Voltage | 1.65 V to 3.6 V | 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 | 1.65 V to 3.6 V |
| Moisture Sensitive | Yes | Yes | - |
| Processor Series | STM32L1 | STM32L1 | STM32L1 |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 960 | 960 | 1000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | 3.6 V | 3.6 V |
| Supply Voltage Min | 1.65 V | 1.65 V | 1.65 V |
| Tradename | STM32 | STM32 | STM32 |
| Unit Weight | 0.012088 oz | 0.012088 oz | - |
| ADC Resolution | - | 12 bit | - |
| Number of I/Os | - | 51 I/O | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Program Memory Type | - | Flash | - |
| Data RAM Type | - | SRAM | - |
| Interface Type | - | I2C, SPI, USART, USB | - |
| Number of ADC Channels | - | 21 | - |
| Number of Timers/Counters | - | 9 Timer | - |