The ultra-low-power STM32L151x6/8/B and STM32L152x6/8/B devices incorporate the connectivity power of the universal serial bus (USB) with the high-performance ARM®Cortex®-M3 32-bit RISC core operating at 32 MHz frequency (33.3 DMIPS), a memory protection unit (MPU), high-speed embedded memories (Flash memory up to 128 Kbytes and RAM up to 16 Kbytes) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.
●All the devices offer a 12-bit ADC, 2 DACs and 2 ultra-low-power comparators, six general-purpose 16-bit timers and two basic timers, which can be used as time bases.
●Moreover, the STM32L151x6/8/B and STM32L152x6/8/B devices contain standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs and a USB. The STM32L151x6/8/B and STM32L152x6/8/B devices offer up to 20 capacitive sensing channels to simply add touch sensing functionality to any application.
●They also include a real-time clock and a set of backup registers that remain powered in Standby mode.
●Finally, the integrated LCD controller (except STM32L151x6/8/B devices) has a built-in LCD voltage generator that allows to drive up to 8 multiplexed LCDs with contrast independent of the supply voltage.
●The ultra-low-power STM32L151x6/8/B and STM32L152x6/8/B devices operate from a 1.8 to 3.6 V power supply (down to 1.65 V at power down) with BOR and from a 1.65 to 3.6 V power supply without BOR option. It is available in the -40 to +85 °C temperature range, extended to 105°C in low power dissipation state. A comprehensive set of power-saving modes allows the design of low-power applications.
●Key Features
● Ultra-low-power platform
● 1.65 V to 3.6 V power supply
● -40°C to 85°C/105°C temperature range
● 0.3 μA Standby mode (3 wakeup pins)
● 0.9 μA Standby mode + RTC
● 0.57 μA Stop mode (16 wakeup lines)
● 1.2 μA Stop mode + RTC
● 9 μA Low-power run mode
● 214 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
● Ultra-safe, low-power 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
● USART supported
● Development support
● Serial wire debug supported
● JTAG and trace supported
● Up to 83 fast I/Os (73 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
● Memories
● Up to 128 Kbytes Flash memory with ECC
● Up to 16 Kbytes RAM
● Up to 4 Kbytes of true EEPROM with ECC
● 80-byte backup register
● LCD Driver (except STM32L151x/6/8/B devices) for up to 8x40 segments
● Support contrast adjustment
● Support blinking mode
● Step-up converter on board
● Rich analog peripherals (down to 1.8 V)
● 12-bit ADC 1 Msps up to 24 channels
● 12-bit DAC 2 channels with output buffers
● 2x ultra-low-power-comparators(window mode and wake up capability)
● DMA controller 7x channels
● 8x peripheral communication interfaces
● 1x USB 2.0 (internal 48 MHz PLL)
● 3x USARTs (ISO 7816, IrDA)
● 2x SPIs 16 Mbit/s
● 2x I2Cs (SMBus/PMBus)
● 10x timers: 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers (independent and window)
● Up to 20 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
● CRC calculation unit, 96-bit unique ID
