| PartNumber | STM32L151CBT6A | STM32L151CBT6 | STM32L151CBT6ATR |
| Description | 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 | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M3 MCU with 128 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 | - | SMD/SMT |
| Package / Case | LQFP-48 | - | LQFP-48 |
| Series | STM32L151CB-A | STM32L151CB | STM32L151CB-A |
| Core | ARM Cortex M3 | ARM Cortex M3 | ARM Cortex M3 |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Maximum Clock Frequency | 32 MHz | - | 32 MHz |
| Program Memory Size | 128 kB | - | 128 kB |
| Data RAM Size | 16 kB | - | 32 kB |
| ADC Resolution | 12 bit | - | 12 bit |
| Number of I/Os | 51 I/O | - | 37 I/O |
| Operating Supply Voltage | 1.8 V to 3.6 V | 1.65 V to 3.6 V | 1.8 V to 3.6 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Product | MCU | - | MCU |
| Program Memory Type | Flash | - | Flash |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Data RAM Type | SRAM | - | - |
| Data ROM Size | 4 kB | - | 4 kB |
| Data ROM Type | EEPROM | - | EEPROM |
| Interface Type | I2C , LIN , USB , UART | I2C, SPI, USART, USB | I2C, SPI, USART, USB |
| Analog Supply Voltage | 1.65 V to 3.6 V | - | - |
| DAC Resolution | 12 bit | - | 2 x 12 bit |
| I/O Voltage | 1.65 V to 3.6 V | - | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 8 x 16 bit | - | 8 x 16 bit |
| Processor Series | STM32L0 | - | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 1500 | 1500 | 2400 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | - | 3.6 V |
| Supply Voltage Min | 1.8 V | - | 1.8 V |
| Tradename | STM32 | - | - |
| Watchdog Timers | Watchdog Timer | - | Watchdog Timer |
| Unit Weight | 0.091712 oz | 0.006409 oz | - |
| Packaging | - | Tray | - |
| Number of ADC Channels | - | - | 14 Channel |