DMG48480F021 01WN DataSheet

DMG48480F021_01WN
Professional, Creditable, Successful Product Specification
DMG48480F021_01WN
Features:
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 Based on T5L0, running DGUS II system.
 2.1-inch, 480*480 pixels resolution, 262K colors, IPS-TFT-LCD, wide viewing angle, Circular LCD
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screen.
 Smart screen without TP, product thickness of only 2.3mm.
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 COF structure. The entire core circuit of the smart screen is integrated on the FPC of LCM,
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featured by light and thin structure, low cost and easy production.
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 50 pins interfaces, including IO, UART, CAN, AD, PWM from CPU core for easy secondary
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development.
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DWIN Technology 1 www.dwin-global.com

DMG48480F021_01WN
1 External Interface
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User interface
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PIN Definition I/O Functional Description
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1 +5V I
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Power supply, DC3.6-5.5V.
2 +5V I
3 GND GND
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4 GND GND GND

5 GND GND
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6 AD7 I 5 input ADCs. 12-bit resolution in case of 3.3V power supply. 0-3.3V
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input voltage. Except for AD6, the rest data is sent to OS core via
7 AD6 I UART3 in real time with 16KHz sampling rate. AD1 and AD5 can be
8 AD5 I used in parallel, and AD3 and AD7 can be used in parallel, which equals
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to two 32KHz sampling AD. AD1, AD3, AD5, AD7 can be used in
9 AD3 I parallel, which equals to a 64KHz sampling AD; the data is summed
1024 times and then divided by 64 to obtain a 64Hz 16bit AD value by
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10 AD1 I oversampling.
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11 +3.3 O 3.3V output, maximum load of 150mA.

External MOSFET to drive buzzer or speaker. The external 10K resistor
12 SPK O should be pulled down to the ground to ensure that power-on is low
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level.
13 SD_CD IO
IN
14 SD_CK O
15 SD_D3 IO SD/SDHC interface,The SD_CK connects a 22pF capacitor to GND
near the SD card interface.
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16 SD_D2 IO
17 SD_D1 IO
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18 SD_D0 IO
19 PWM0 O 2 16-bit PWM output. The external 10K resistor should be pulled down
to the ground to ensure that power-on is low level.
20 PWM1 O The OS core can be controlled in real time via UART3.
21 P3.3 IO If using RX8130 or SD2058 I2C RTC to connect to both IOs,

SCL should be connected to P3.2,and SDA connected to P3.3 in
22 P3.2 IO
parallel with 10K resistor pull-up to 3.3V.

DMG48480F021_01WN
23 P3.1/EX1 IO It can be used as an external interrupt 1 input at the same time, and
supports both low voltage level or trailing edge interrupt modes.
24 P3.0/EX0 IO It can be used as an external interrupt 0 input at the same time, and
supports both low voltage level or trailing edge interrupt modes.
25 P2.7 IO IO interface
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41 UART4_TXD O
UART4
42 UART4_RXD I
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43 UART5_TXD O
UART5
44 UART5_RXD I
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47 CAN_TX O CAN interface (External CAN chip drive is required.See 6 - (6) for circuit
reference)
48 CAN_RX I
IN
49 UART2_TXD O
UART2（UART0 serial port of OS core)
50 UART2_RXD I
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DMG48480F021_01WN
2 Specification Parameters
2.1 Product Parameters
Main Chip T5L0
User Interface 50Pin_0.5mm FPC
FLASH 8M Bytes
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UI Version DGUSII / TA
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Power Supply HDL662S adapter board power supply
Display Color 262K colors
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Dimensions 2.1 inch
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Resolution 480*480
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Active Area 53.28mm (W)×53.28mm (H)
Viewing Angle
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Wide viewing angel, typical value of 85°/85°/85°/85°(L/R/U/D)
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＞10000 hours (Time of the brightness decaying to 50% on the condition of
Backlight Service Life
continuous working with the maximum brightness)
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Brightness 350nit
0~100 grade (When the brightness is adjusted to 1%~30% of the maximum

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Brightness Control
brightness, flickering may occur and is not recommended to use in this range)
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DMG48480F021_01WN
2.2 Interface Parameters

Item Conditions Min Typ Max Unit
User Set
Baud Rate 3150 115200 3225600 bps
(Configure the CFG file)
Output 1 3.0 3.3 - V
Output Voltage(TXD)
Output 0 - 0 0.3 V
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Input 1 - - 3.3 V
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Input Voltage(RXD)
Input 0 0 - 0.5 V
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UART2: TTL;
Interface UART4: TTL;（Only available after OS configuration）
UART5: TTL;（Only available after OS configuration）
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UART2: N81;
Data Format UART4: N81/E81/O81/N82;4 modes (OS configuration)
UART5: N81/E81/O81/N82;4 modes (OS configuration)
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2.3 Electrical specifications
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Rated Power <2W
Operating Voltage
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3.6~5.5V, typical value of 5V
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170mA VCC=5V, max backlight
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Operating Current
110mA VCC=5V, backlight off
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Recommended power supply: 5V 0.5A DC

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2.4 Operating Environment

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Operating Temperature -10℃~60℃

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Storage Temperature -20℃~70℃
Operating Humidity 10%~90%RH, typical value of 60% RH

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DMG48480F021_01WN
3 Reliability Test
The smart screen products undergo a series of procedural reliability tests, including high and low
temperature, ESD, pulse and surge, and waterproof tests before mass production to ensure product quality.
3.1 ESD Test

Test temperature: 25°C
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Test process: the product was placed on the test bench to perform contact and air discharge in turn of the serial
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screen iron frame and display area as shown in Fig.4.1 below. During the experimental process, it was observed
whether the screen is dead, black, white, splash, or reboot. According to the experiment results, the performance
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is in line with the criteria GB/T 17626.2 B level and above.
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4.1Electrostatic discharge test
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Discharge Type Discharge Value Result

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Contact discharge ±4KV Normal operation

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Air discharge ±4KV Normal operation

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DMG48480F021_01WN
3.2 High and Low Temperature Test

Test temperature:-20~70℃
Test process: the product will be placed obliquely in the high and low temperature test chamber for 12h for 20 on
and off cycles. Then it will be check at room temperature after power on for the appearance and function, CTP
offset situation, jumping point, page random switching and failure.
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Temperature Result
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High temperature（70℃） Normal operation
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Low temperature（-20℃） Normal operation
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DMG48480F021_01WN
4 Debug
It is recommended for new users of DWIN smart LCMs to purchase official accessories. For more details, please
refer to customer service center.
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DMG48480F021_01WN
Operation steps: open serial assistant - custom function command - set command - send.
For example:
（1）Page switching
Tx：5AA5 07 82 0084 5A01 0008
（2）Standby backlight setting
Tx：5AA5 07 82 0082 64 32 03E8
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DGUS operation
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DMG48480F021_01WN
5 T5L0 ASIC
T5L0 ASIC is a low-power, cost-effective, GUI and application highly integrated single-chip dual-core
ASIC designed by DWIN Technology for small-size LCD and mass produced in 2020.
(1) Mature and stable 8051 core which is the most widely used with the maximum operating frequency of
T5L is up to 250MHz, 1T(single instruction cycle)high speed operation.
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(2) Separate GUI CPU core running DGUS II System:
 High-speed display memory, 2.4GB/S bandwidth. 18-bit color display resolution support up to
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1024*768 (TA mode), 854*480 (DGUS mode).
 2D hardware acceleration and the UI with animation and icons as its main feature is extremely cool
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and smooth.
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 Images and icons stored in JPEG format. Adopt Low-cost 16Mbytes SPI Flash.
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 High quality ratio and sound restoration and playback.
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 128Kbytes variable storage space for exchanging data with OS CPU Core and memory.

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2 10-bit 800KHz DC/DC controllers simplify LED backlight, analog power design and save cost and
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space.
Support DGUS development and simulation on PC. Support backend remote upgrade.
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(3) Separate CPU (OS CPU) core runs user 8051 code or DWIN OS system and user CPU is omitted in
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practical application:
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 Standard 8051 core and instruction set, 64Kbytes code space, 32Kbytes on-chip RAM.
64-bit integer mathematical operation unit (MDU), including 64-bit MAC and 64-bit divider.
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 Built-in software WDT, 3 16-bit Timers, 12 interrupt signals support up to four levels of interrupt
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nesting.
 Support IAP online simulation and debugging with unlimited breakpoints.

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 Upgrade code online through DGUS system.
(4) 1Mbytes on-chip Flash with DWIN patent encryption technology ensure code and data security.
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(5) Operating temperature ranges from -40℃ to +85℃(IC operating temperature customizable from -55℃
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to 105℃).
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(6) Low power consumption and strong anti-interference ability. It can work stably on double-sided PCB
and passes EMC/EMI test easily.

DMG48480F021_01WN
6 COF Screen Secondary Development
Standard 8051 core, easy to develop in C language and assembly language.
（1）22 IOs:
To use output function of IO, you need to open the output control, output strength and peripheral multiplexing
power-on initialization configuration. Subsequent use of IO is consistent with the standard 8051 as follows.
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#include "sys.h"
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sbit LED1 = P1^0;
sbit KEY1 = P1^1;
//Pin initialization
void io_init()
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{
PORTDRV = 0x01;//Driving current is 8mA
P1MDOUT |= 0x01;//Set P1.0 as output to drive LED1 light
P1MDOUT &= 0xFD;//Set P1.1 as input to read the voltage level change of the pin
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}
void main(void)
{
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u16 cnt_1ms;
u16 key1_sta;//Store the voltage level state of the KEY1 pin
sys_init();//System initialization
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io_init();//Pin initialization
cnt_1ms = 0;
key1_sta = KEY1;
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while(1)
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cnt_1ms++;
sys_delay_ms(1);// Delay sub-function, LED1 blinks every 500ms.
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if(cnt_1ms==500)
{
LED1 = !LED1;
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cnt_1ms = 0;
}
//If the voltage level of the pin has changed, it will be updated in the interface
if(key1_sta!=KEY1)
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{
key1_sta = KEY1;
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sys_write_vp(0x1000,(u8*)&key1_sta,1);
}
}
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（2）3 UARTs:
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High-speed serial port, supporting up to 3225600bps,as follows.

#include "sys.h"
#include "uart2.h"
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void main(void)
{
u16 len;
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uart2_init(115200);//Initialize serial port 2

while(1)
{
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if(uart2_rx_sta&UART2_PACKET_OK)//Received serial packet

{
len = uart2_rx_sta&UART2_PACKET_LEN;//Get the length of the serial packet without "\r\n"or '\n' terminator
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uart2_buf[len++] = 0;//Add 2 empty strings at the end

uart2_buf[len++] = 0;
printf("T5L_C51:%s\r\n",uart2_buf);//Return the received packet to the sender with the prefix "T5L_C51:"
sys_write_vp(0x2000,uart2_buf,len/2+1);//At the same time display the packet to the interface
uart2_rx_sta = 0;//Reset means that this serial packet is disposed of
}
}
}

DMG48480F021_01WN
（3）1 CAN:
Only the special function registers of the CAN need to be configured as follows.
void CanInit()
{
P0MDOUT = 0x04; //P0.2(CAN_TX) is configured as output
P0 = 0xFF; //Output high voltage level
ADR_H = 0xFF; //Configuring DGUS variable memory addresses
ADR_M = 0x00;
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ADR_L = 0x60;
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ADR_INC = 1; //Configure address increments
RAMMODE = 0x8F; //Write mode
while(!APP_ACK); //Waiting for confirmation,Among answers of Hardware to 8051 occupied variable memory request,
1=OK and 0=BUSY, which need to continue to wait.
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DATA3 = 0x1A; //Variable memory address 0xFF:0060 assignment
DATA2 = 0x17;
DATA1 = 0x0F;
DATA0 = 0;
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APP_EN = 1;
while(APP_EN); //Wait for the data operation to be completed, and reset after the operation is completed
DATA3 = 0; //Acceptance register 0xFF:0061 assignment reset
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DATA2 = 0;
DATA1 = 0;
DATA0 = 0;
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APP_EN = 1;
DATA3 = 0xFF; //Acceptance Mask Register 0xFF:0062 all set to 1, and no acceptance of reception
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DATA2 = 0xFF;
DATA1 = 0xFF; n
DATA0 = 0xFF;
APP_EN = 1;
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RAMMODE = 0; //Terminate access to DGUS variable memory
CAN_CR = 0xA0; //Open CAN and configure FF0060-FF0062
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while(CAN_CR&0x20); // Execute the configuration of FF0060-FF0062

ECAN = 1; //Open the CAN interrupt
EA = 1; //Open the total interrupt
}
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（4）5 A/Ds: 12-bit, supports sampling to 16-bit

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Only the special function registers of the A/Ds need to be configured as follows.
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#include "sys.h"
#include "adc.h"
void main(void)
{
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u16 ad;
float vol;
while(1)
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{
ad = adc_read_avg(ADC_CHANNEL0,10);//1.Read the ad value of channel 0
vol = ad*(3300.0f/4095);//2.Calculate the voltage in mV
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sys_write_vp(0x2000,(u8*)&ad,1);// Update the ad value

sys_write_vp(0x2001,(u8*)&vol,2);//Update the voltage value
}
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DMG48480F021_01WN
（5）2 PWMs: 16-bit high accuracy, adjustable resolution.
Only need to configure the frequency and duty cycle of PWM as follows.
void Pwm_0()
{
u8 i=0;
u8 temp[6]={0xAA,0x20,0x42,0x56,0x78,0};//Set the pwm_0 duty cycle to 100%
Write_Dgus(0x87,0x2042);//Configure the frequency100khz
Write_Dgus(0x86,0x5A01);//
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for(i=0;i<5;i++) //Checksum
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temp[5]+=temp[i];
for(i=0;i<6;i++)//Configure the duty cycle
OneSendData3(temp[i]);
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}
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（6）CAN circuit design parameters
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DMG48480F021_01WN
7 Packing Capacity & Dimension
Dimension
Dimension 56.18(W) ×59.71 (H) × 2.3(T) mm
Net Weight 15g
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Packing Capacity
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Model Size Layer Quantity/Layer Quantity(Pcs)
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Carton1： 220mm(L)×160mm(W)×47mm(H) 1 4 4
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Disclaimer: The product design is subject to alternation and improvement without prior notice.
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DMG48480F021_01WN
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DMG48480F021_01WN
8 Revision records
Rev Revise Date Content Editor
00 2023-03-08 First Edition Xu Ying
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Please contact us if you have any questions about the use of this document or our products, or if you would like to
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know the latest information about our products:
 Customer service Tel: +86 400 018 9008
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 Customer service email: dwinhmi@dwin.com.cn
 DWIN Developer Forum: https://forums.dwin-global.com/
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Thank you all for continuous support of DWIN, and your approval is the driving force of our progress!
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DMG48480F021_01WN

Professional, Creditable, Successful Product Specification

 Smart screen without TP, product thickness of only 2.3mm.

DWIN Technology 1 www.dwin-global.com

4 GND GND GND

11 +3.3 O 3.3V output, maximum load of 150mA.

21 P3.3 IO If using RX8130 or SD2058 I2C RTC to connect to both IOs,

DWIN Technology 2 www.dwin-global.com

DWIN Technology 3 www.dwin-global.com

Main Chip T5L0

User Interface 50Pin_0.5mm FPC

Display Color 262K colors

0~100 grade (When the brightness is adjusted to 1%~30% of the maximum

DWIN Technology 4 www.dwin-global.com

2.2 Interface Parameters

Recommended power supply: 5V 0.5A DC

2.4 Operating Environment

Operating Temperature -10℃~60℃

Storage Temperature -20℃~70℃

Operating Humidity 10%~90%RH, typical value of 60% RH

DWIN Technology 5 www.dwin-global.com

3.1 ESD Test

Discharge Type Discharge Value Result

Contact discharge ±4KV Normal operation

Air discharge ±4KV Normal operation

DWIN Technology 6 www.dwin-global.com

3.2 High and Low Temperature Test

DWIN Technology 7 www.dwin-global.com

DWIN Technology 8 www.dwin-global.com

DWIN Technology 9 www.dwin-global.com

T5L is up to 250MHz, 1T(single instruction cycle)high speed operation.

 Support IAP online simulation and debugging with unlimited breakpoints.

 Upgrade code online through DGUS system.

and passes EMC/EMI test easily.

DWIN Technology 10 www.dwin-global.com

6 COF Screen Secondary Development

Standard 8051 core, easy to develop in C language and assembly language.

High-speed serial port, supporting up to 3225600bps,as follows.

uart2_init(115200);//Initialize serial port 2

if(uart2_rx_sta&UART2_PACKET_OK)//Received serial packet

uart2_buf[len++] = 0;//Add 2 empty strings at the end

DWIN Technology 11 www.dwin-global.com

while(CAN_CR&0x20); // Execute the configuration of FF0060-FF0062

（4）5 A/Ds: 12-bit, supports sampling to 16-bit

sys_write_vp(0x2000,(u8*)&ad,1);// Update the ad value

DWIN Technology 12 www.dwin-global.com

（5）2 PWMs: 16-bit high accuracy, adjustable resolution.

DWIN Technology 13 www.dwin-global.com

7 Packing Capacity & Dimension

Dimension 56.18(W) ×59.71 (H) × 2.3(T) mm

Net Weight 15g

DWIN Technology 14 www.dwin-global.com

DWIN Technology 15 www.dwin-global.com

Rev Revise Date Content Editor

00 2023-03-08 First Edition Xu Ying

 Customer service Tel: +86 400 018 9008

 DWIN Developer Forum: https://forums.dwin-global.com/

DWIN Technology 16 www.dwin-global.com