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11 / 127 page DocID025938 Rev 6 11/127 STM32L051x6 STM32L051x8 Description 32 2.1 Device overview Table 2. Ultra-low-power STM32L051x6/x8 device features and peripheral counts Peripheral STM32 L051K6 STM32L 051T6 STM32 L051C6 STM32 L051R6 STM32 L051K8 STM32L 051T8 STM32 L051C8 STM32 L051R8 Flash (Kbytes) 32 64 Data EEPROM (Kbytes) 22 RAM (Kbytes) 88 Timers General- purpose 33 Basic 11 LPTIMER 11 RTC/SYSTICK/IWDG/ WWDG 1/1/1/1 1/1/1/1 Communi- cation interfaces SPI/I2S 3(2)(1)/0 3(2)(1)/0 4(2)(1)/1 4(2)(1)/1 3(2)(1)/0 3(2)(1)/1 4(2)(1)/1 4(2)(1)/1 I2C 1 2 22 1 2 22 USART 22 LPUART 0 1 11 0 1 11 GPIOs 27(2) 29 37 51(3) 27(2) 29 37 51(3) Clocks: HSE/LSE/HSI/MSI/LSI 0/1/1/1/1 0/1/1/1/1 1/1/1/1/1 1/1/1/1/1 0/1/1/1/1 0/1/1/1/1 1/1/1/1/1 1/1/1/1/1 12-bit synchronized ADC Number of channels 1 10 1 10 1 10 1 16(3) 1 10 1 10 1 10 1 16(3) Comparators 22 Max. CPU frequency 32 MHz Operating voltage 1.8 V to 3.6 V (down to 1.65 V at power-down) with BOR option 1.65 V to 3.6 V without BOR option Operating temperatures Ambient temperature: –40 to +125 °C Junction temperature: –40 to +130 °C Packages LQFP32, UFQFPN 32 WLCSP 36 LQFP48 LQFP64 TFBGA 64 LQFP32, UFQFPN 32 WLCSP 36 LQFP48 LQFP64 TFBGA 64 1. 2 SPI interfaces are USARTs operating in SPI master mode. 2. LQFP32 has two GPIOs, less than UFQFPN32 (27). 3. TFBGA64 has one GPIO, one ADC input and one capacitive sensing channel less than LQFP64. |
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