STM32 package selection guide
At this stage of the graphical application development, the user already determined the application requirements in terms of GPIOs:
- whether an external memory is needed and which is the bus width
- which LTDC configuration to use: RGB565, RGB666, or RGB888
When selecting the STM32 package, the user has to consider the RGB interfaces availability and the application requirements in terms of GPIOs number. The user must refer to the STM32 product datasheet to get the available packages with GPIOs.
An easy way to check if the STM32 package in which the user is interested matches the application needs in term of GPIO number, is to use STM32CubeMX (the pinout tab).
Table 21 STM32 packages with LTDC peripheral versus RGB interface availability summarizes the available packages and RGB interface of some STM32 MCUs embedding an LTDC.
| Product | LQFP100 | LQFP144 | LQFP176 | LQFP208 | UFBGA144 | UFBGA169 | UFBGA176 | UFBGA176 + 25 | TFBGA100 | TFBGA216 | TFBGA225 | WLCSP105 | WLCSP143 | WLCSP168 | WLCSP180 | WLCSP101 | VQN68 | VFBGA142 | VFBGA169 | VFBGA178 | VFBGA198 | VFBGA223 | VFBGA264 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STM32F429/439 | 18 | 18 | 24 | 24 | NA | 24 | 24 | NA | NA | 24 | NA | NA | 18 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| STM32F469/4791 | 18 | 18 | 24 | 24 | NA | 24 | 24 | NA | NA | 24 | NA | NA | NA | 24 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| STM32F7x6 | 18 | 24 | 24 | 24 | NA | NA | 24 | NA | 18 | 24 | NA | NA | 24 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| STM32F7x7 | 18 | 24 | 24 | 24 | NA | NA | 24 | NA | NA | 24 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| STM32F7x81 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 24 | NA | NA | NA | NA | NA | NA | NA | NA |
| STM32F7x91 | NA | NA | 24 | 24 | NA | NA | NA | NA | NA | 24 | NA | NA | NA | NA | 24 | NA | NA | NA | NA | NA | NA | NA | NA |
| STM32H7R7/S7 | NA | NA | 24 | 24 | 18 | 24 | NA | 24 | NA | NA | 24 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| STM32N6xx | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 24 | 24 | 24 | 24 | 24 | 24 |
| STM32H5Ex/Fx | 24 | 24 | 24 | NA | 24 | 24 | NA | 24 | NA | NA | 24 | 24 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |