3.2-inch TFT
http://ttmcu.taobao.com
The test program wiring instructions:
The code testing environment: JME-core board the STC microcontroller instruction cycle +1 T (51 cores
STC12LE5A60S2) +33 the M crystal MCU operating voltage 3.3V
The program default IO connections:
The Line of Control: RS-P3 ^ 5; WR-P3 ^ 6; RD-P3 ^ 7; CS-P1 ^ 0; REST-P1 ^ 2;
Data line: DB0-DB7 in turn connected P0 ^ 0-P0 ^ 7; DB8-DB15 turn connected to P2 ^ 0-P2 ^ 7;
The touch function connection: (do not use touch from time to connect)
D_CLK-P1 ^ 7; D_CS-P1 ^ 4; D_DIN-P3 ^ 0; D_OUT-P3 ^ 1; D_PENIRQ-P3 ^ 4;
* /
● TFT power: the screen power supply 2.8-3.3V; remember not to use 5V
(With the PCB module has inherited 3V regulator IC can enter 5V)
● backlight power supply (LED_A pin): backlight power maximum 3.2V
(Series 200 ohm resistor in series 20 ohm current limiting resistor or 5V 3.3V supply).
● data port level: in theory, can not let the data port level exceeds 3.3V, 5V microcontroller If you must use
The IO connection data bus, because tft internal voltage clamp, with can be used, however always is not standardized.
Experiment can do sample testing, bulk products, best to improve product stability,
Low-voltage microcontroller or add a level conversion IC.