Microsd™ Card; Sdram; Quad-Spi Nor Flash Memory; Virtual Com Port - STMicroelectronics STM32F469I-DISCO User Manual

UM1932
4.8 microSD™ card
A microSD™ card with a capacity of 4 GBytes or more can be inserted in the receptacle
CN9. 4 bits of the SDIO interface of the STM32F469NIH6 are used to communicate with the
microSD™ card. The card detection is read by the GPIO PG2: when a microSD™ card is
inserted, the logic level is 0, otherwise it is 1.
4.9

SDRAM

A 128-Mbit SDRAM is accessible with the FMC interface of the microcontroller
STM32F469NIH6. The data bus is 32-bit wide.
The SDRAM is composed of four banks of 32 Mbits selected by the address bits A14 and
A15.
Each of the four banks is organized as 4096 rows by 256 columns by 32 bits. Raw and
column addresses are pre-selected using the CAS and RAS signals of the FMC bus.
The SDRAM is selected by SDNE0 and can be addressed from 0xC000 0000 to
0xC0FF FFFF.
4.10

Quad-SPI NOR Flash memory

A 128-Mbit Quad-SPI NOR Flash memory is connected to Quad-SPI interface of the
STM32F469NIH6 microcontroller.
4.11

Virtual COM port

The serial interface USART3 is directly available as a virtual COM port of the PC connected
to the ST-LINK/V2-1 USB connector CN1. The virtual COM port settings are configured as:
115200 b/s, 8 bits data, no parity, 1 stop bit, no flow control.
4.12 ARDUINO
CN5, CN6, CN7 and CN8 are female connectors compatible with the ARDUINO
Most shields designed for ARDUINO
board.
Caution: The STM32 microcontroller I/Os are 3.3 V compatible while ARDUINO
compatible.
Connector
CN6 Power
®
connectors
Table 4. ARDUINO
Pin Pin name
1
2 IOREF
3 NRST
4 +3V3
UM1932 Rev 3
Hardware layout and configuration
®
Uno V3 can fit to the STM32F469I-DISCO Discovery
®
compatible connectors
MCU Pin
LEFT connectors
- -
-
NRST
-
®
standard.
®
Uno boards are 5 V
Function
Not connected
3.3V Ref
Reset
(1)
+3.3V input/output
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