| PartNumber | STM32L151R8H6ATR | STM32L151R8H6A | STM32L151R8H6 |
| Description | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M3 MCU with 64 Kbytes Flash, 32 MHz CPU, USB | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M3 MCU with 64 Kbytes Flash, 32 MHz CPU, USB | ARM Microcontrollers - MCU 32-Bit Arm Cortex M3 64kb UltralowPower |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | BGA-64 | BGA-64 | - |
| Series | STM32L151R8-A | STM32L151R8-A | STM32L151R8 |
| Core | ARM Cortex M3 | - | ARM Cortex M3 |
| Data Bus Width | 32 bit | - | 32 bit |
| Maximum Clock Frequency | 32 MHz | - | - |
| Program Memory Size | 64 kB | - | - |
| Data RAM Size | 32 kB | - | - |
| ADC Resolution | 12 bit | - | - |
| Number of I/Os | 50 I/O | - | - |
| Operating Supply Voltage | 1.8 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 |
| Packaging | Reel | - | Tray |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | - |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Data RAM Type | SRAM | - | - |
| Data ROM Size | 4 kB | - | - |
| Data ROM Type | EEPROM | - | - |
| Interface Type | I2C, SPI, USART, USB | - | I2C, SPI, USART, USB |
| Analog Supply Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | - |
| DAC Resolution | 12 bit | - | - |
| I/O Voltage | - | 1.65 V to 3.6 V | - |
| Number of ADC Channels | 19 Channel | - | - |
| Number of Timers/Counters | 8 Timer | - | - |
| Processor Series | STM32L1 | STM32L1 | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 2500 | 3840 | 3840 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | 3.6 V | - |
| Supply Voltage Min | 1.8 V | 1.65 V | - |
| Tradename | STM32 | STM32 | - |
| Watchdog Timers | Watchdog Timer, Windowed | - | - |
| Unit Weight | - | 0.572814 oz | 0.006004 oz |
| RoHS | - | - | Y |
| Moisture Sensitive | - | - | Yes |