Tft Lcd Display; Limitations; Operating Voltage; User Leds - ST STM32L073Z-EVAL User Manual

Hardware layout and configuration
7.15

TFT LCD display

The 2.4" color TFT LCD is connected to SPI1 port of STM32L073VZT6. The LCD TFT
module is the MB895/S.
Pin
1
2
3
4
5
6
7
8
Voltage translators are implemented on SPI bus between the microcontroller
STM32L073VZT6 and LCD module to allow the LCD to be functional over the whole voltage
range of the microcontroller. A bidirectional voltage translator is used on SPI_MOSI PE15
because the LCD module has a specific mode in which it may send back information on this
line. The direction of this voltage translator is controlled by SPI_MOSI_DIR PH9. PE15 is
working as MOSI when PH9 is high or as MISO when PH9 is LOW.
7.15.1

Limitations

No exclusivity.
7.15.2

Operating voltage

The whole operating range of STM32L073VZT6 is: 1.65 V to 3.6 V.
7.16

User LEDs

Four general purpose color LEDs (LD 1, 2, 3, 4) are available as display devices.
LED LD1 (Green)
LED LD2 (Orange)
LED LD3 (Red)
LED LD4 (Blue)
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Table 11. TFT LCD connector

2.4" TFT LCD connector CN16
Description Pin connection
CS PE10
SCL PE13
SDI PE15
RS -
WR -
RD -
SDO PE14
RESET RESET#
User LEDs
PE4
PE5
PD1
PE7
Pin
V
9
10 VCI
11 GND
12 GND
13 BL_VDD
14 BL_Control
15 BL_GND
16 BL_GND

Table 12. User LEDs

Pin used
UM1878 Rev 2
Description Pin connection
3.3V
DD
3.3V
GND
GND
5V
5V
GND
GND
comment
"low" = LED lighted
"low" = LED lighted
"low" = LED lighted
"low" = LED lighted
UM1878