Key facts
- Brand
- STMicroelectronics
- Model
- ST7LITEO
- Category
- microcontrollers
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-07
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STMicroelectronics AN1605 Application Note Using Active RC to Wakeup ST7LITEO from Power Saving Mode
The document investigates the power consumption of a typical application where the ST7LITEO MCU is placed in HALT mode and woken up at regular intervals by an external interrupt generated by an active RC circuit. It analyzes how consumption depends on parameters such as supply voltage, temperature, and capacitor values, utilizing the internal pull-up resistor to minimize external components.
Read onlineSTMicroelectronics ST7LITEO specifications
| Flash Program Memory | 1.5kB |
|---|---|
| RAM | 128 bytes |
| EEPROM | 128 bytes |
| Integrated Oscillator Accuracy | 1% |
| Maximum Clock Frequency | 8MHz |
| ADC Resolution | 8-bit |
| ADC Input Range 1 | 0 to 5V |
| ADC Input Range 2 | 0 to 250mV |
| ADC Amplifier Gain | 8 |
| PWM Frequency Range | 2kHz up to 4MHz |
| Incremental Period Change | 125ns |
| Lite Timer Interrupt | every 1ms |
| Supply Voltage | 400V DC |
| Driver Component | L6384 |
Source: STMicroelectronics AN1971 ST7LITEO Microcontrolled Ballast Application Note
All STMicroelectronics ST7LITEO documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the optimum delay for minimum consumption when discharging the capacitor?
A software delay of 294 cycles must be inserted before putting the MCU in HALT again.
From: STMicroelectronics AN1605 Application Note Using Active RC to Wakeup ST7LITEO from Power Saving Mode
How long does the MCU stay in Halt mode at 3.6V?
At 3.6V, the MCU stays in Halt mode for a duration of 72.00 ms.
From: STMicroelectronics AN1605 Application Note Using Active RC to Wakeup ST7LITEO from Power Saving Mode
What microcontroller is used in this ballast design?
The design uses the ST7LITEO microcontroller to handle control and measurement.
From: STMicroelectronics AN1971 ST7LITEO Microcontrolled Ballast Application Note
How is the PWM frequency controlled?
Frequency is controlled by writing to the Reload Value Register of the Autoreload Timer.
From: STMicroelectronics AN1971 ST7LITEO Microcontrolled Ballast Application Note