UM1871 datasheet(22/64 Pages) STMICROELECTRONICS

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Hardware layout and configuration

UM1871

22/64

DocID027604 Rev 3

2.14

Memories

8M-Byte SDRAM is connected to SDRAM Bank1 of FMC interface of STM32F446ZE. All

signals for memory are also connected to extension connectors CN11 and CN12.

2.15

RF-EEPROM

An RF-EEPROM module ANT7-M24LR-A (MB1020A-02) is mounted on connector CN12

and connected to the common I2C4 bus of STM32F446ZET6. The I2C address of the

RF-EEPROM daughterboard is 0b1010000.

2.16

LCD display and input devices

The 3.2” TFT color LCD connected to FMC bus and four general purpose color LEDs (LD 1,

2, 3, 4) are available as display devices. A touchscreen, a 4-direction joystick with selection

key and wakeup/tamper button (B2) are available as input devices and connected to MFX.

JP2

CAN transceiver is working in slope control mode when JP2 is open.

JP1

CAN terminal resistor is enabled when JP1 is fitted. Default setting: Not fitted.

Table 9. CAN related jumpers (continued)

Jumper

Description

Table 10. LCD modules

Description

Pin connection

Description

Pin connection

3.2” TFT LCD connector CN17

FMC_NE1

PD14

FMC_D12

FMC_A0

PD15

FMC_D13

WR/SCL

FMC_NWE

PD16

FMC_D14

FMC_NOE

PD17

FMC_D15

RESET

RESET#

BL_VND

GND

PD1

FMC_D0

BL_Control

VDD

PD2

FMC_D1

VDD

+3V3

PD3

FMC_D2

VCI

+3V3

PD4

FMC_D3

GND

PD5

FMC_D4

GND

PD6

FMC_D5

BL_VDD

VDD

PD7

FMC_D6

SDO

PD8

FMC_D7

SDI

PD10

FMC_D8

Touchscreen X-

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