Key facts
- Brand
- STMicroelectronics
- Model
- STR91xFA
- Category
- microcontrollers
- Documents
- 5
- Languages
- EN
- Last added
- 2012-08-09
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ManualST STR91xFAxxx handbook
STMicroelectronics STR91xFA specifications
| CPU and memories operating voltage | 1.65 V to 2.0 V |
|---|---|
| I/O ring operating voltage | 2.7 V to 3.6 V |
| Main oscillator frequency range | 4 to 25 MHz |
| RTC crystal frequency | 32.768 kHz |
| Maximum PLL output frequency | 96 MHz |
| AVREF voltage range | 1.0 V to Vppq |
All STMicroelectronics STR91xFA documents by type
Application Note 4
How to use the product for one specific task, with worked examples.
Other documents 1
Questions answered in these manuals
What is the purpose of the Low Voltage Detector (LVD)?
The LVD circuit monitors Vpp and Vppq supplies and generates a global reset whenever either voltage drops below the configured levels.
Can the Flash memory be read immediately after wake-up from low power mode?
Yes, in STR91xFA low power modes, the Flash automatically reduces its power consumption and can be read immediately after wake-up.
What types of memory can the STR91xFA EMI bus interface with?
The bus can interface with SRAM, Flash memory, ROM, or PSRAM.
What are the available bus width options for the EMI bus?
The bus width can be configured for 8 or 16 bit operations.
What is the purpose of the STR91xFA DMA controller?
It allows devices to transfer data to or from the system's memory and registers without the intervention of the CPU.
How does the DMA controller improve CPU operation?
It prevents the STR9 core from being overloaded by serving all peripherals, resulting in an overall speed-up in CPU operation.