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STM32L152ZC：Ultra-low-power ARM Cortex-M3 MCU with 256 Kbytes Flash, 32 MHz CPU, LCD, USB, 3xOp-amp

The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A 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.

The STM32L151xC/C-A and STM32L152xC/C-A devices offer two operational amplifiers, one 12-bit ADC, two DACs, two ultra-low-power comparators, one general-purpose 32-bit timer, six general-purpose 16-bit timers and two basic timers, which can be used as time bases.

Moreover, the STM32L151xC/C-A and STM32L152xC/C-A devices contain standard and advanced communication interfaces: up to two I2Cs, three SPIs, two I2S, three USARTs, and an USB. The STM32L151xC/C-A and STM32L152xC/C-A devices offer up to 23 capacitive sensing channels to simply add a 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 STM32L151xC/C-A devices) has a built-in LCD voltage generator that allows to drive up to 8 multiplexed LCDs with the contrast independent of the supply voltage.

The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A 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. They are available in the -40 to +85 °C and -40 to +105 °C temperature ranges. 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 105°C temperature range
  • 305 nA standby mode (3 wakeup pins)
  • 1.15 μA standby mode + RTC
  • 0.475 μA stop mode (16 wakeup lines)
  • 1.35 μA stop mode + RTC
  • 11 μA Low-power run mode
  • 230 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
• Up to 23 capacitive sensing channels
• CRC calculation unit, 96-bit unique ID
• 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
• Serial wire debug, JTAG and trace
• Up to 116 fast I/Os (102 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
• Memories
  • 256 KB Flash with ECC
  • 32 KB RAM
  • 8 KB of true EEPROM with ECC
  • 128-byte backup register
• LCD driver (except STM32L151xC/C-A devices) up to 8x40 segments, contrast adjustment, blinking mode, step-up converter
• Rich analog peripherals (down to 1.8V)
  • 2x operational amplifiers
  • 12-bit ADC 1 Msps up to 40 channels
  • 12-bit DAC 2 ch 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)

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