UM2033 Rev 4
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UM2033
Hardware layout and configuration
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5.13 SDRAM
memory
A 128-Mbit SDRAM is connected to the FMC interface of the STM32F769NIH6. This
memory is used as 4M x 32bits.
5.14 Quad-SPI
NOR flash memory
A 512-Mbit Quad-SPI NOR flash memory is connected to the Quad-SPI interface of the
STM32F769NIH6.
5.15
Virtual COM port
The serial interface USART1 is directly available as a virtual COM port of the PC, connected
to the ST-LINK/V2-1 USB connector (CN16). The virtual COM port settings are configured
with 115200 b/s, 8 bits data, no parity, 1 stop bit, and no flow control.
5.16 Buttons
and
LEDs
The black button (B2) located top side is the reset of the microcontroller STM32F769NIH6.
The blue button B1 located top side is available to be used as a digital input or as a wakeup-
alternate function. When the button is depressed the logic state is 1, otherwise, the logic
state is 0. Four LEDs located top side are available for the user. From left to right the LEDs
are LD1, LD2, LD3, and LD4 with respectively green, orange, red, and blue colors (Refer to
Figure 5: 32F769IDISCOVERY top layout
). To light a LED a low-logic state 0 should be
written in the corresponding GPIO register.
shows the assignment of the control
ports to the LED indicators.
Table 4. Control port assignment
Reference
Color
Name
Comment
B1
BLUE
USER
Alternate function Wake-up
B2
BLACK
RESET
-
LD1
RED
USER1
PJ13
LD2
GREEN
USER2
PJ5
LD3
GREEN
Arduino
PA12
LD4
RED
OTG overcurrent PD4
LD5
GREEN
VBUS USB HS
-
LD6
RED
5 V Power
-
LD7
RED
Fault Power
Current upper than 625 mA
LD8
RED/GREEN
STLINK COM
Green when communication
