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Description

The ultra-low-power STM32L151xC and STM32L152xC devices incorporate the connectivity power of the universal serial bus (USB) with the high-performance ARM? Cortex?-M3 32-bit RISC core operating at a frequency of 32 MHz (33.3 DMIPS), a memory protection unit (MPU), high-speed embedded memories (Flash memory up to 256 Kbytes and RAM up to 32 Kbytes) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

Features

? Ultra-low-power platform

– 1.65 V to 3.6 V power supply

– -40 °C to 105 °C temperature range

– 0.29μA Standby mode (3 wakeup pins)

– 1.15 μA Standby mode + RTC

– 0.44 μA Stop mode (16 wakeup lines)

– 1.4 μA Stop mode + RTC

– 8.6 μA Low-power run mode

– 185 μA/MHz Run mode

– 10 nA ultra-low I/O leakage

– 8 μs wakeup time

? Core: ARM? Cortex?-M3 32-bit CPU

– From 32 kHz up to 32 MHz max

– 1.25 DMIPS/MHz (Dhrystone 2.1)

– Memory protection unit

? Reset and supply management

– Low-power, ultrasafe BOR (brownout reset) with 5 selectable thresholds

– Ultra-low-power POR/PDR

– Programmable voltage detector (PVD)

? Clock sources

– 1 to 24 MHz crystal oscillator

– 32 kHz oscillator for RTC with calibration

– High Speed Internal 16 MHz factory-trimmed RC (+/- 1)

– Internal Low-power 37 kHz RC

– Internal multispeed low-power 65 kHz to 4.2 MHz PLL for CPU clock and USB (48 MHz)

? Pre-programmed bootloader

– USB and USART supported

? Development support

– Serial wire debug supported

– JTAG and trace supported

? Up to 83 fast I/Os (70 I/Os 5V tolerant), all mappable on 16 external interrupt vectors

? Memories

– 256 Kbytes of Flash memory with ECC

– 32 Kbytes of RAM

– 8 Kbytes of true EEPROM with ECC

– 128-byte backup register

? LCD Driver (except STM32L151xC devices) up to 8x40 segments, contrast adjustment, blinking mode, step-up converter

? Rich analog peripherals (down to 1.8 V)

– 2x operational amplifiers

– 12-bit ADC 1Msps up to 25 channels

– 12-bit DAC 2 channels with output buffers

– 2x ultra-low-power-comparators (window mode and wake up capability)

? DMA controller 12x channels

? 9x peripheral communication interfaces

– 1x USB 2.0 (internal 48 MHz PLL)

– 3x USARTs

– Up to 8x SPIs (2x I2S, 3x 16 Mbit/s)

– 2x I2Cs (SMBus/PMBus)

? 11x timers: 1x 32-bit, 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers (independent and window)

? Up to 23 capacitive sensing channels

? CRC calculation unit, 96-bit unique ID