November 17, 2023
STM32H747I-DISCO "Discovery kit with STM32H747XI MCU" -- description
The star of the show is the STM32H747, it offers:
- Cortex-M7 at 480 Mhz
- Cortex-M4 at 240 Mhz
- 2M of flash memory
- 1M of ram
- ethernet 10/100
- up to 168 IO ports
- 4 uarts
- 4 i2c
- 6 spi
- 2 USB otg
- up to 22 timers
- 2 12 bit DAC
- 3 16 bit ADC
Added with the discovery kit:
- two 512 Mbit NOR flash (two 64M)
- 256 Mbit SDRAM (32M)
- buttons and LEDs
- LCD module 4 inch w/ MIPI-DSI interface
- On board STLINK-V3E
- PMOD connectors
And a lot more. There is a 251 page datasheet and a reference manual (RM0399)
which is an amazing 3528 pages. This is why you buy products from manufacturers like ST
rather than fly by night manufacturers in China.
M7 versus M4
I have had some experience with Cortex-M4 devices, but what is better about an M7?
- About 1.65 times faster at the same clock.
- 6 stage pipeline
- Can load two 32 bit values in parallel (DSP oriented)
- Double precision floating point.
- caches - 32 bit lines, 16K of I and 16K of D.
- memory protection unit
Feedback? Questions?
Drop me a line!
Tom's Computer Info / tom@mmto.org