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SPI NSS Hardware control

Posted on April 30, 2013 at 10:51Hello, I have a problem with SPI communication in case of NSS Hardware control. NSS of SPI Signal is always low. I know that it is low when SPI is enable, and high when SPI is disable. But it is always low. why? The ...

Kim.Andy by • Associate III
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ADC protection and amplification circuit

Posted on April 29, 2013 at 09:24Hello, I need circuit, which will be protect ADC input against overvoltage. Also, it should amplification low-level voltage (from sensor for example). Do you have something like this?Thank you.

hospodar by • Associate III
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What RAM types can i use in STM32F4 100-pin packages?

Posted on April 30, 2013 at 11:37Hello, after reading and reviewing 1 dozen times the RM and app notes, i could not come to a clear conclusion on what type of RAM i can use in STM32F4 100-pin packages. The more clear and detailed info was for NOR fl...

pmarques by • Associate
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stm32f100 vs. stm32f103 for power control applications..

Posted on April 27, 2013 at 21:49Hi All,     I've rummaged through the archives but didn't really see what I'm looking for here.  We have a few PWM power control designs based on the Atmel ATTINY861A which provides fairly complete support for this a...

mmcmac by • Associate
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STM32L151C6 = Medium Density Device?

Posted on April 29, 2013 at 11:38Hi All, the reference manual is quite confusing regarding this question. Within most it is stated that the medium range devices have a flash range from 64 to 128KByte, while in one chapter this range is given from 32...

parketny by • Associate II
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STM32 ADC& DMA 4 channels

Posted on April 24, 2013 at 16:49I am working with stm32F0 ADC & DMA peripherals and i have to convert 4 channels.The ADC  is triggered by the Timer1.My problem is that i obtain  the result correct but there is a permutation between  2 channels(the ...

ADC Noise : too much

Posted on January 03, 2012 at 09:36ADC Tests with stm32value eval board. PC4 as AD Input, conversion all 20msec, 20turn Pot with 22k u1 RC Filter to PC4. Software looks for max and min adc values. I let it run for 30000 conversions: I get errors up ...

F373 current in Stop Mode too large

Posted on April 19, 2013 at 16:49VDDC should be 5uA, AVDD should be 2uA. But I have 500uA.  I tried to enter in the stop mode before and immediately after the system_init, without any initialization settings. Tried also to do pins IN, FLOAT, AF. Sto...

fiim by • Associate III
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