About johann23

johann23 · 2013-04-19

Posted on April 19, 2013 at 10:50 Hello, I've doubts regarding the access of an external SRAM (IS61WV102416BLL) connected to the FSMC bus that has the following spe cifications . This SRAM is organized as 1024K x 16-bit . ...

johann23 · 2013-03-26

Posted on March 26, 2013 at 12:02Dear all, I have developed a board on which a STM32F205 microcontroller is connected to an asynchronous external SRAM (ISSI IS61WV102416BLL) which has read/write access times of 10ns. This RAM is used as a picture b...

johann23 · 2012-01-16

Posted on January 16, 2012 at 11:25Hello, I plan to use a STM32F207 MCU in order to display pictures stored in a SD card on a controller-less 7 inches TFT display (WVGA, 800x480, 18bpp). The pictures are static. Is it possible to interface such a di...

johann23 · 2010-05-25

Posted on May 25, 2010 at 11:01USB OTG with two connectors (STM32F105)

johann23 · 2013-04-19

Posted on April 19, 2013 at 13:31Thank you Jan. Indeed, I missed the chapter 31.4.1 in RM0033 which answers my question. By the way, I am using the STM32F205 model.

johann23 · 2013-04-19

Posted on April 19, 2013 at 12:40Thank you for your answer. What you're saying is: Address 0x64000000 points to byte 0Address 0x64000001 points to byte 1Address 0x64000002 points to byte 2Address 0x64000003 points to byte 3 Since this external ...

johann23 · 2013-03-27

Posted on March 27, 2013 at 09:09Thank you clive1 for your answer. As you suggested, I did some tests with the SRAM of STM3220G-EVAL board in order to be sure that my code was working as expected and the measured write access time was near 40ns, wh...

johann23 · 2012-01-17

Posted on January 17, 2012 at 10:16I will consider the LPC1788, it is more convenient for my target application Furthermore, as you said, there are some ''plus'' such as the free graphic library. Thank you for your answers. Regards, Johann

johann23 · 2012-01-16

Posted on January 16, 2012 at 16:09 The external bus is 60 MHz max, and half of that will disappear to the screen, the other to the memory, with no margins. Yes, designing with no margins is not a good idea and not an option. Have you conside...

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External SRAM 16-bit access - elucidation required [SOLVED]

External SRAM (FSMC) poor performance

STM32F207 and WVGA 7 inches TFT LCD

USB OTG with two connectors (STM32F105)

Re: External SRAM 16-bit access - elucidation required [SOLVED]

Re: External SRAM 16-bit access - elucidation required [SOLVED]

Re: External SRAM (FSMC) poor performance

Re: STM32F207 and WVGA 7 inches TFT LCD

Re: STM32F207 and WVGA 7 inches TFT LCD