STM32L152R8

Description

The ultra-low-power STM32L15xxx incorporates the connectivity power of the universal serial bus (USB) with the high-performance ARM Cortex™-M3 32-bit RISC core operating at a 32 MHz frequency, 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 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 STM32L15xxx devices contain standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs and a USB. The STM32L15xxx 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 has a built-in LCD voltage generator that allows you to drive up to 8 multiplexed LCDs with contrast independent of the supply voltage. The ultra-low-power STM32L15xxx operates 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.

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 32-bit Cortex™-M3 CPU
– From 32 kHz up to 32 MHz max
– 33.3 DMIPS peak (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 KB Flash with ECC
– Up to 16 KB RAM
– Up to 4 KB of true EEPROM with ECC
– 80 Byte Backup Register
■ LCD Driver 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 peripherals communication interface
– 1x USB 2.0 (internal 48 MHz PLL)
– 3x USART (ISO 7816, IrDA)
– 2x SPI 16 Mbits/s
– 2x I2C (SMBus/PMBus)
■ 10x timers: 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timer, 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