电子说
NHD - 0116GZ - FSB - GBW是Newhaven Display International推出的一款字符液晶显示模块。从型号上我们可以获取很多信息,“NHD - ”代表Newhaven Display;“0116 - ”表示该模块为1行16字符显示;“GZ - ”是其特定型号;“F - ”代表半透反射型;“SB - ”表示侧面蓝色LED背光;“G - ”为STN - 灰色;“B - ”为6:00视角;“W - ”意味着宽温度范围( - 20°C~ + 70°C),并且该模块符合RoHS标准。
| 项目 | 符号 | 条件 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|---|---|
| 工作温度范围 | Top | 绝对最大 | -20 | - | +70 | °C |
| 存储温度范围 | Tst | 绝对最大 | -30 | - | +80 | °C |
| 电源电压 | VDD | 4.7 | 5.0 | 5.5 | V | |
| 电源电流 | IDD | Ta = 25°C,VDD = 5.0V | - | 1.5 | 2.5 | mA |
| LCD供电(对比度) | VDD - V0 | Ta = 25°C | - | 4.5 | - | V |
| “H” 电平输入 | Vih | 2.2 | - | VDD | V | |
| “L” 电平输入 | Vil | 0 | - | 0.6 | V | |
| “H” 电平输出 | Voh | 2.4 | - | - | V | |
| “L” 电平输出 | Vol | - | - | 0.4 | V | |
| 背光电源电压 | Vled | - | - | 5.0 | - | V |
| 背光电源电流 | Iled | Vled = 5.0V | - | 30 | - | mA |
| 项目 | 符号 | 条件 | 最小值 | 典型值 | 最大值 | 单位 |
|---|---|---|---|---|---|---|
| 垂直视角(顶部) | AV | Cr ≥ 2 | - | 25 | - | ° |
| 垂直视角(底部) | AV | Cr ≥ 2 | - | 70 | - | ° |
| 水平视角(左侧) | AH | Cr ≥ 2 | - | 30 | - | ° |
| 水平视角(右侧) | AH | Cr ≥ 2 | - | 30 | - | ° |
| 对比度 | Cr | - | 2 | - | - | |
| 响应时间(上升) | Tr | - | - | 120 | 150 | ms |
| 响应时间(下降) | Tf | - | - | 120 | 150 | ms |
| 引脚编号 | 符号 | 外部连接 | 功能描述 |
|---|---|---|---|
| 1 | VSS | 电源 | 接地 |
| 2 | VDD | 电源 | 逻辑供电电压( + 5.0V) |
| 3 | V0 | 调节电源 | 对比度供电(约0.5V) |
| 4 | RS | MPU | 寄存器选择信号。RS = 0:命令;RS = 1:数据 |
| 5 | R/W | MPU | 读写选择信号,R/W = 1:读;R/W = 0:写 |
| 6 | E | MPU | 操作使能信号,下降沿触发 |
| 7 - 10 | DB0 – DB3 | MPU | 四个低阶双向三态数据总线,4位操作时不使用 |
| 11 - 14 | DB4 – DB7 | MPU | 四个高阶双向三态数据总线 |
| 15 | LED + | 电源 | LED背光供电(通过板载电阻 + 5.0V) |
| 16 | LED - | 电源 | 背光接地 |
void command(char i)
{
P1 = i; //put data on output Port
D_I = 0; //D/I=LOW : send instruction
R_W = 0; //R/W=LOW:Write
E = 1;
Delay(1);
Delay(1); //enable pulse width >= 300ns
E = 0; //Clock enable: falling edge
}
void write(char i)
{
E = 0;
P1 = i; //put data on output Port
D_I = 1; //D/I=LOW : send data
R_W = 0; //R/W=LOW: Write
E = 1;
Delay(1);
Delay(1); //enable pulse width >= 300ns
E = 0; //Clock enable: falling edge
}
void init()
{
E = 0;
Delay(100); //Wait >15 msec after power is applied
Delay(100);
command(0x30);
command(0x30); //command 0x30 = Wake up
Delay(30); //must wait 5ms, busy flag not available
Delay(30);
command(0x30);
command(0x30); //command 0x30 = Wake up #2
Delay(10); //must wait 160us, busy flag not available
Delay(10);
command(0x30);
command(0x30); //command 0x30 = Wake up #3
Delay(10); //must wait 160us, busy flag not available
Delay(10);
command(0x38);
command(0x38); //Function set: 8-bit/2-line
command(0x10); //Set cursor
command(0x0c);
command(0x0c); //Display ON; Cursor ON
command(0x06); //Entry mode set
}
void command(char i)
{
P1 = i; //put data on output Port
D_I = 0; //D/I=LOW : send instruction
R_W = 0; //R/W=LOW : Write
Nybble(); //Send lower 4 bits
i = i < < 4; //Shift over by 4 bits
P1 = i; //put data on output Port
Nybble(); //Send upper 4 bits
}
void write(char i)
{
P1 = i; //put data on output Port
D_I = 1; //D/I=HIGH : send data
R_W = 0; //R/W=LOW:Write
Nybble(); //Clock lower 4 bits
i = i < < 4; //Shift over by 4 bits
P1 = i; //put data on output Port
Nybble(); //Clock upper 4 bits
}
void Nybble()
{
E = 1;
Delay(1);
Delay(1); //enable pulse width >= 300ns
E = 0; //Clock enable: falling edge
}
void init()
{
P1 = 0;
P3 = 0;
E = 0;
Delay(100); //Wait >15 msec after power is applied
Delay(100);
P1 = 0x30; //put 0x30 on the output port
Delay(30);
Delay(30); //must wait 5ms, busy flag not available
Nybble(); //command 0x30 = Wake up
Delay(10);
Delay(10); //must wait 160us, busy flag not available
Nybble(); //command 0x30 = Wake up #2
Delay(10); //must wait 160us, busy flag not available
Delay(10);
Nybble(); //command 0x30 = Wake up #3
Delay(10);
Delay(10); //can check busy flag now instead of delay
P1 = 0x20; //put 0x20 on the output port
Nybble(); //Function set: 4-bit interface
Nybble();
command(0x28);
command(0x28); //Function set: 4-bit/2-line
command(0x10); //Set cursor
command(0x0F);
command(0x0F); //Display ON; Blinking cursor
command(0x06); //Entry Mode set
}
该模块进行了多项质量测试,包括高温存储、低温存储、高温操作、低温操作、高温高湿操作、热冲击抗性、振动测试和静电测试等。具体测试条件和注意事项可参考文档中的表格。
在实际设计中,电子工程师们需要根据这些特性和参数,合理地使用该显示模块,确保系统的稳定运行。大家在使用过程中有没有遇到过什么特别的问题呢?欢迎在评论区分享交流。
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