STM32F401RET6STM32F103ZCT6 托盘
内容简介
Extended interrupt/event controller (EXTI)The extended interrupt/event controller consists of 32 edge detector lines used to generateinterrupt/event requests and wake-up the syste...
- 型号：STM32F103ZCT6
- 供货量：99999PCS
- 品牌：st
- 发货地：广东深圳
- 发货期：1-3天
- 价格：￥11.6元/PCS
详细内容
Extended interrupt/event controller (EXTI)
The extended interrupt/event controller consists of 32 edge detector lines used to generate
interrupt/event requests and wake-up the system. Each line can be independently
configured to select the trigger event (rising edge, falling edge, both) and can be masked
independently. A pending register maintains the status of the interrupt requests. The EXTI
can detect an external line with a pulse width shorter than the internal clock period. Up to 87
GPIOs can be connected to the 16 external interrupt lines.
3.10
Analog-to-digital converter (ADC)
The 12-bit analog-to-digital converter has up to 16 external and 3 internal (temperature
sensor, voltage reference, VBAT voltage measurement) channels and performs conversions
in single-shot or scan modes. In scan mode, automatic conversion is performed0n a
selected group of analog inputs.
The ADC can be served by the DMA controller.
An analog watchdog feature allows very precise monitoring of the converted voltage of0ne,
some or all selected channels. An interrupt is generated when the converted voltage is
outside the programmed thresholds.
3.10.1
Temperature sensor
The temperature sensor (TS) generates a voltage VSENSE that varies linearly with
temperature.
The temperature sensor is internally connected to the ADC_IN16 input channel which is
used to convert the sensor output voltage into a digital value.
The sensor provides good linearity but it has to be calibrated to obtain good overall
accuracy of the temperature measurement. As the offset of the temperature sensor varies
from chip to chip due to process variation, the uncalibrated internal temperature sensor is
suitable for applications that detect temperature changes0nly.
To improve the accuracy of the temperature sensor measurement, each device is
individually factory-calibrated by ST. The temperature sensor factory calibration data are
stored by ST in the system memory area, accessible in read-only mode
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