UM2032 datasheet(22/48 Pages) STMICROELECTRONICS

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Hardware layout and configuration

UM2032

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DocID029078 Rev 2

6.13

Quad-SPI NOR Flash memory

A 128-Mbit Quad-SPI NOR Flash memory (N25Q128A13EF840E from MICRON) is

connected to the Quad-SPI interface of the STM32F412ZGT6 microcontroller.

Note that QSPI_CLK (port PB2) is sampled by the STM32F412ZGT6 at start-up as the

BOOT1 bit. If necessary, the user can set the BOOT1 state by fitting one of the resistors

R100 or R104. By default R100 and R104 are not fitted. Refer to Section 6.7: Boot options

for more details.

Limitations: The Quad-SPI memory is not working when the STM32 is supplied with 2 V.

6.14

Virtual COM port

The serial interface USART2 is directly available through a USB virtual COM port of the

ST-LINK/V2-1. The USB connector is CN6.

6.15

Arduino Uno V3 connectors

CN1, CN2, CN11 and CN12 are female connectors compatible with Arduino Uno V3

standard. Most shields designed for Arduino Uno V3 can fit to the 32F412GDISCOVERY

discovery kit.

Caution:

The IOs of STM32 microcontroller are 3.3 V compatible instead of 5 V for Arduino Uno V3.

Table 5. Arduino Uno V3 compatible connectors

Left connectors

Right connectors

CN No.

No.

Pin name STM32 pin

Function

STM32

name

Pin No.

CN No.

I2C2_SCL

PB10

D15

CN12

Digital

-I2C2_SDA

PB9

D14

---

AVDD

Ground

GND

CN2

Power

Not

connected

SPI1_SCK

PA5

D13

IOREF

3.3 V

SPI1_MISO

PA6

D12

NRST

Reset

TIM3_CH2,

SPI1_MOSI

PA7

D11

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