Description
| LCD Controller |
ILI9325C |
| Touch Screen Controller |
ADS7843 or XPT2046 |
| LCD Type |
TFT |
| LCD Interface |
16-bit parallel |
| Touch Screen Interface |
SPI |
| Backlight |
LED |
| Colors |
262K |
| Resolution |
320*240 |
| Pin pitch |
2.00 mm |
HY28A-LCDA Pin Description
| PIN NO |
SYMBOL |
DESCRIPTION |
FUNCTION |
| 1 |
5V_IN |
5V power supply |
When powered from 5V supply,
Pin 20 & Pin 21 ( 3V3_IN & 3V3_OUT ) provide 3.3V output. |
| 2 |
GND |
Ground |
Power Ground |
| 3 |
D10 |
Data bus |
D10 |
| 4 |
D11 |
Data bus |
D11 |
| 5 |
D12 |
Data bus |
D12 |
| 6 |
D13 |
Data bus |
D13 |
| 7 |
D14 |
Data bus |
D14 |
| 8 |
D15 |
Data bus |
D15 |
| 9 |
D16 |
Data bus |
NC |
| 10 |
D17 |
Data bus |
NC |
| 11 |
CSA |
LCD chip select |
Low active |
| 12 |
RS |
Instruction/Data register selection |
RS = 1 : Instruction Register
RS = 0 : Data Register |
| 13 |
WR |
Write |
WR = 0, RD = 1 |
| 14 |
RD |
Read |
WR = 1, RD = 0 |
| 15 |
RESET |
Reset the controller chip |
Low active |
| 16 |
NC |
Not connect |
Not connect |
| 17 |
NC |
Not connect |
Not connect |
| 18 |
NC |
Not connect |
Not connect |
| 19 |
GND |
Ground |
Power Ground |
| 20 |
3V3_IN |
3.3V power supply |
3V3_IN = 3V3OUT, When powered from 3.3V supply,
5V_IN keep NC. |
| 21 |
3V3_OUT |
3.3V power supply |
3V3_IN = 3V3OUT, When powered from 3.3V supply,
5V_IN keep NC. |
| 22 |
GND |
Ground |
Power Ground |
| 23 |
D0 |
Data bus |
D0 |
| 24 |
D1 |
Data bus |
D1 |
| 25 |
D2 |
Data bus |
D2 |
| 26 |
D3 |
Data bus |
D3 |
| 27 |
D4 |
Data bus |
D4 |
| 28 |
D5 |
Data bus |
D5 |
| 29 |
D6 |
Data bus |
D6 |
| 30 |
D7 |
Data bus |
D7 |
| 31 |
NC |
Not connect |
Not connect |
| 32 |
TP_CS |
Touch screen chip select |
Low active |
| 33 |
TP_SCK |
Touch screen SPI clock |
connects to SPI SCK |
| 34 |
TP_SDI |
Touch screen data input |
connects to SPI MOSI |
| 35 |
TP_SDO |
Touch screen data output |
connects to SPI MISO |
| 36 |
TP_IRQ |
Touch screen interrupt |
Low level while the touch screen detects pressing |
| 37 |
NC |
Not connect |
Not connect |
| 38 |
NC |
Not connect |
Not connect |
| 39 |
GND |
Ground |
Power Ground |
| 40 |
BL_CTRL |
Backlight brightness adjustment |
Control the backlight brightness via PWM |
Document
HY28A PCB.lib
HY28A dimension.pdf
HY28A LCD module Schematic.pdf
HY28A-LCDA example source code.rar
HY28A-LCDA MDK project for LPC1768.rar
