STM32L151R8T6ATR

ARM Cortex-M3 32MHz 闪存：64K@x8bit RAM：32KB

The ultra-low-power STM32L151x6/8/B-A and STM32L152x6/8/B-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 128 Kbytes and RAM up to 32 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-A and STM32L152x6/8/B-A devices contain standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs and a USB. The STM32L151x6/8/B-A and STM32L152x6/8/B-A devices offer up to 20 capacitive sensing channels to simply add touch sensing functionality to any application.

They also include a real-time clock with sub-second counting and a set of backup registers that remain powered in Standby mode.

Finally, the integrated LCD controller except STM32L151x6/8/B-A 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-A and STM32L152x6/8/B-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**

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Ultra-low-power platform

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1.65 V to 3.6 V power supply

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-40 °C to 105 °C temperature range

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-40°C to 105°C temperature range

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0.28 µA Standby mode 3 wakeup pins

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1.11 µA Standby mode + RTC

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0.44 µA Stop mode 16 wakeup lines

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1.38 µA Stop mode + RTC

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10.9 µA Low-power Run mode

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185 µA/MHz Run mode

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10 nA ultra-low I/O leakage

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8 µs wakeup time

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Core: ARM® Cortex® -M3 32-bit CPU

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From 32 kHz up to 32 MHz max

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1.25 DMIPS/MHz Dhrystone 2.1

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Memory protection unit

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Reset and supply management

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Ultra-safe, low-power BOR brownout reset with 5 selectable thresholds

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Ultra-low-power POR/PDR

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Programmable voltage detector PVD

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Clock sources

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1 to 24 MHz crystal oscillator

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32 kHz oscillator for RTC with calibration

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High Speed Internal 16 MHz factory-trimmed RC +/- 1%

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Internal low-power 37 kHz RC

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Internal multispeed low-power 65 kHz to 4.2 MHz

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PLL for CPU clock and USB 48 MHz

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Pre-programmed bootloader

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USART supported

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Development support

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Serial wire debug supported

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JTAG and trace supported

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Up to 83 fast I/Os 73 I/Os 5V tolerant, all mappable on 16 external interrupt vectors

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Memories

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Up to 128 Kbytes Flash memory with ECC

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Up to 32 Kbytes RAM

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Up to 4 Kbytes of true EEPROM with ECC

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80-byte backup register

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LCD Driver except STM32L151x6/8/B-A devices for up to 8x40 segments

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Support contrast adjustment

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Support blinking mode

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Step-up converter on board

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Rich analog peripherals down to 1.8 V

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12-bit ADC 1 Msps up to 24 channels

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12-bit DAC 2 channels with output buffers

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2x ultra-low-power-comparatorswindow mode and wake up capability

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DMA controller 7x channels

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8x peripheral communication interfaces

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1x USB 2.0 internal 48 MHz PLL

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3x USART ISO 7816, IrDA

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2x SPI 16 Mbits/s

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2x I2C SMBus/PMBus

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10x timers: 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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Up to 20 capacitive sensing channels supporting touchkey, linear and rotary touch sensors

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CRC calculation unit, 96-bit unique ID