STSTM32L152ZD超低功耗ARMCortex-M3MCU开发方案

– Operates down to 1.8 V

■ Two 12-bit DACs with output buffers

■ Two ultralow power comparators

– Window mode and wakeup capability

■ 11 timers: one 32-bit and six 16-b电感生产厂家it generalpurpose timers, two 16-bit basic timers, two watchdog timers (independent and window)

■ Up to 12 communication interfaces

– Up to two I2C interfaces (SMBus/PMBus)

– Up to five USARTs

– Up to three SPIs (16 Mbit/s), two with I2S

– USB 2.0 full-speed interface

– SDIO interface

■ Up to 36 capacitive sensing channels supporting touch, proximity, linear and rotary sensors

■ 32-bit CRC calculation unit, 96-bit unique ID

图1.超低功耗STM32L15xxD方框图

STM32L152D-EVAL评估板

The STM32L152D-EVAL evaluation board is a complete demonstration and development platform for STMicroelectronic’s ARM cortex-M3 core-based STM32L152ZDT6 microcontroller featuring tw三相电感器o I2C, three SPI, five USART, 12-bit ADC, 12-bit DAC, LCD driver, internal 48 KB SRAM and 384 KB Flash, touch sensing, USB FS, LCD controller, FSMC and JTAG debugging support.

This board can be used as reference design for user application development but it is not considered as final application. The full range of hardware features on the board helps you evaluate all peripherals (USB FS, USART, audio DAC, microphone ADC, dot-matrix LCD, LCD glass, IrDA, LDR, SRAM, NOR Flash, MicroSD Card, temperature sensor and so on) and develop your own applications. Extension headers make it possible to easily connect a daughterboard or wrapping board for your specific application. An ST-LINK/V2 is integrated on the board as embedded in-circuit debugger and programmer for the STM32 MCU.

图2.STM32L152D-EVAL评估板外形图

STM32L152D-EVAL评估板主要特性:

● Four 5 V power supply options: Power jack, ST-LINK/V2 USB connector, user USB connector or daughterboard

● Audio jack connected to I2S DAC, or STM32L152ZDT6 internal DAC

● Microphone connected to ADC using integrated op amp as amplifier

● 2 GByte (or more) MicroSD Card on SDIO interface

● Temperature sensor and RF EEPROM on I2C compatible serial interface

● RS-232 interface configurable for communication or Flashloader

● IrDA transceiver

● JTAG and trace debug support, embedded ST-LINK/V2

● 4 Kbit serial Flash, 512K x16-bit SRAM and 128 Mbit NOR Flash

● 240x320 TFT color LCD connected to FSMC interface of STM32L152ZDT6

● Joystick with 4-direction control and selector

● Reset and Tamper or key button

● 4 color user LEDs and 3 LEDs as MCU power range indicator

● MCU consumption measurement circuit

● LCD glass 40 x 8 segments connected to LCD driver of STM32L152ZDT6

● Extension connector for daughterboard or wrapping board

● MCU voltage choice of 3.3 V or adjustable from 1.65 V to 3.6 V

● USB FS connector

● Touch slider

● Light dependent resistor (LDR)

● One MCU integrated op amp configured as Sallen-Key 2nd order low pass filter

● One MCU integrated op amp configured as amplifier with adjustable gain

● One ADC / DAC input signal connector

● Potentiometer

图3.STM32L152D-EVAL评估板方框图

图4.STM32L152D-EVAL评估板电路图

图5.STM32L152D-EVAL评估板电路图:音频

图6.STM32L152D-EVAL评估板电路图:扩展连接器

图7.STM32L152D-EVAL评估板电路图:IDD测量

图8.STM32L152D-EVAL评估板电路图:JTAG和跟踪

图9.STM32L152D-EVAL评估板电路图:RS-232和LCD
平面变压器厂家 | 平面电感厂家

基于IC和蓄电技术的光电转换器件简介以照明的光线作为遥控器和钟表的电源，无需布线即可使传感器网络遍布家中 罗姆正在开发为这种环境实现的太阳能发电面板。那就是色素增感型光电转换元件（Dye Sensitized Solar Cell，以下

[DCDC]LMZ34002使用中遇到的问题，求助！参照SNVU297“UsingtheLMZ34002”用LMZ34002设计了一个输入+15V输出-7.5V的电路（输入电容为一颗10uF模压陶瓷电容，输出电容为两颗47uF模压陶瓷电容），测试时电路板上的GND接电子

[变压器]漏感高频变压器漏感产生和解决方法     在高频变压器中，如果初级磁通不全部耦合到次级，就产生漏感，漏感是一个寄生参数，以单端变换器为例，功率开关管由导通状态转变为断开时，漏感存储的能量就会释放，产生很大的尖峰电压。 如果不加控制，就会造成电路器件的损坏和很大的电磁干扰。 电路中可增加缓冲电路，有一个释放的回路，但首先在磁芯

 2/3   首页 上一页 1 2 3 下一页 尾页