STM32F103 - FSMC 8 bit BUS

asherp · ‎2014-01-23

Posted on January 23, 2014 at 14:24

Hello,

in RM008 Rev. 14 at Section 21.5.2 -''Supported memories and transactions'' - it is written

(in table 108) that memory data size is always 16 bit - can we write single byte from 8 bit BUS without effecting the consequent byte?

e.g. - we are writning single byte to address 0x1000 , and we want that the next write cycle will be written to address 0x1001 , and so on - is it possible?

Thank you

waclawek.jan · ‎2014-01-23

Posted on January 23, 2014 at 17:06

For some strange reason, throughout the STM32 manuals, confusing examples are given, often featuring subsets of possible settings. This is one of those. You should read it as ''If 16 bit memory data bus is chosen, the following combinations may arise. You can chose 8-bit memory data bus if you want, and the combinations for those are not described anywhere in the manual, but it will work.''

JW