<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>misunderstanding about peripherals in 64,100,144 pin STM32L152</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/41005/misunderstanding-about-peripherals-in-64-100-144-pin-stm32l152</link><description> 
Hi, 

 
I am designing a board with STM32L152VD LQFP100. From the
datasheet pin definition table When I look for USART3 pins I find pin
pairs 55,56 and 78,79 both for USART3. I am sure about pin 55 and 56
since only LQFP100 has it but not sure if pin</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: misunderstanding about peripherals in 64,100,144 pin STM32L152</title><link>https://community.arm.com/thread/128954?ContentTypeID=1</link><pubDate>Fri, 26 Jun 2015 04:40:35 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:94dc6d44-053c-42b8-84c1-8c3b01555598</guid><dc:creator>Gary Olson</dc:creator><description>&lt;p&gt;&lt;p&gt;
Hi Hamed,&lt;/p&gt;

&lt;p&gt;
I just learning about this.&lt;br /&gt;
So don&amp;#39;t have a lot of knowledge on this topic.&lt;/p&gt;

&lt;p&gt;
Gary&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: misunderstanding about peripherals in 64,100,144 pin STM32L152</title><link>https://community.arm.com/thread/117801?ContentTypeID=1</link><pubDate>Fri, 26 Jun 2015 04:00:27 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:f9b5977f-aa2a-45fb-8320-182addeb3f4d</guid><dc:creator>hamed ad</dc:creator><description>&lt;p&gt;&lt;p&gt;
Dear Gary&lt;/p&gt;

&lt;p&gt;
Thanks for good suggestion. I tried Cubemx and enjoyed having all
the pinout and peripherals.&lt;br /&gt;
But I don&amp;#39;t know why the code generated by this software is different
from the libraries I have downloaded from ST and use in my code
previously. so I have problem with using the generated code or
basically I should begin using the new library having appendix AHL
files!&lt;br /&gt;
Did you have experienced this problem?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: misunderstanding about peripherals in 64,100,144 pin STM32L152</title><link>https://community.arm.com/thread/108287?ContentTypeID=1</link><pubDate>Tue, 23 Jun 2015 07:28:52 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:d138e0f2-d006-43e1-af4b-6e9bb20fd475</guid><dc:creator>Gary Olson</dc:creator><description>&lt;p&gt;&lt;p&gt;
I would try this program&lt;/p&gt;

&lt;p&gt;
&lt;a href="http://www.st.com/stm32cube"&gt;http://www.st.com/stm32cube&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;
And target your device.&lt;/p&gt;

&lt;p&gt;
It may help you. I imagine though that you can choose either pins
since they are in two different places if you know how to configure
the part properly.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: misunderstanding about peripherals in 64,100,144 pin STM32L152</title><link>https://community.arm.com/thread/82644?ContentTypeID=1</link><pubDate>Tue, 23 Jun 2015 05:01:26 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:5c216a56-2724-4971-9713-b0a4fc831f63</guid><dc:creator>hamed ad</dc:creator><description>&lt;p&gt;&lt;p&gt;
Thanks for your help. I reviewed once again but I am confused with
SPI2_SCK whether on LQFP100 it is pin 52 or 82? I think it is more
likely to be 52 since MISO and MOSI are pin 53 and 54. But I see in
pin 82 named as SPI2_SCK!&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: misunderstanding about peripherals in 64,100,144 pin STM32L152</title><link>https://community.arm.com/thread/93453?ContentTypeID=1</link><pubDate>Tue, 23 Jun 2015 04:13:00 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:bdccc043-6fdb-4630-b918-860ec96077ed</guid><dc:creator>Westonsupermare Pier</dc:creator><description>&lt;p&gt;&lt;p&gt;
Functionality can be multiplexed in/out by a number of pin
options.&lt;/p&gt;

&lt;p&gt;
This allows you to escape the specific peripherals you want to
use, out of the pin count device you are working with.&lt;/p&gt;

&lt;p&gt;
The parts generally share a common die (IC), they are just placed
in different packages, and a subset of the pins bonded-out.&lt;/p&gt;

&lt;p&gt;
Review your part&amp;#39;s &amp;quot;Data Sheet&amp;quot; to see the peripheral options on
each pin, configured via the GPIOx_AFR register.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: misunderstanding about peripherals in 64,100,144 pin STM32L152</title><link>https://community.arm.com/thread/63850?ContentTypeID=1</link><pubDate>Tue, 23 Jun 2015 03:47:29 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:1ac151a1-0069-4b3a-addc-db3157625ce9</guid><dc:creator>Gary Olson</dc:creator><description>&lt;p&gt;&lt;p&gt;
That depends on the package you are going to use. A 100 pin
package may not have all pins available. Perhaps the 144 pin package
would have all the pins accessible.&lt;/p&gt;

&lt;p&gt;
I took a look that 75 and 76 are UART CTS, RTS signals. Also
noticed on the 100 part&lt;br /&gt;
I think I remember that 76 is tied to VDD_2.&lt;/p&gt;

&lt;p&gt;
As I looked at this document &amp;quot;STM32L151xD STM32L152xD&amp;quot; datasheet
(DM00034689.pdf)&lt;/p&gt;

&lt;p&gt;
on Page 45 there is a table :&lt;/p&gt;

&lt;p&gt;
Table 8. STM32L151xD and STM32L152xD pin definitions
(continued)&lt;/p&gt;

&lt;p&gt;
You can see that these pins are available on both 100 and 144 pin
packages. But not at the&lt;br /&gt;
same pin numbers:&lt;/p&gt;

&lt;p&gt;
USART3_CTS/&lt;/p&gt;

&lt;p&gt;
144 pin package on 74 100 pin package on 52&lt;/p&gt;

&lt;p&gt;
USART3_RTS/&lt;br /&gt;
144 pin package on 75 100 pin package on 53&lt;/p&gt;

&lt;p&gt;
Need to look in the right column that corresponds to the
packages.&lt;/p&gt;

&lt;p&gt;
You can also see in the table that some functions available on the
die of the chip&lt;br /&gt;
are not hooked up on the smaller packages. I think the 144 pin chip
has all functions hooked up. but the 100 pin chip can not have all
functions available. The table shows that.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>