深入解析NHD - 0216K1Z - NSW - BBW - L字符液晶顯示模塊
在電子設(shè)計領(lǐng)域,液晶顯示模塊是人機交互中不可或缺的組件。今天我們就來詳細解析Newhaven Display International公司的NHD - 0216K1Z - NSW - BBW - L字符液晶顯示模塊,看看它有哪些特性和優(yōu)勢,以及如何在實際項目中應(yīng)用。
文件下載:NHD-0216K1Z-NSW-BBW-L.pdf
模塊概述
產(chǎn)品命名含義
NHD - 0216K1Z - NSW - BBW - L這個型號包含了豐富的信息:
- “NHD - ”代表Newhaven Display。
- “0216 - ”表示該模塊有2行,每行可顯示16個字符。
- “K1Z - ”是具體的型號。
- “N - ”表示透射式。
- “SW - ”代表側(cè)面白色LED背光。
- “B - ”有兩個含義,一是STN - 藍色( - ),二是6:00最優(yōu)視角。
- “W - ”表示寬溫度范圍。
- “L - ”意味著低功耗,并且該產(chǎn)品符合RoHS標準。
功能與特性
- 顯示能力:具備2行×16字符的顯示能力,能滿足基本的信息展示需求。
- 內(nèi)置控制器:采用ST7066U控制器,為顯示功能提供了穩(wěn)定的支持。
- 電源要求:使用 +5.0V 電源供電,采用1/16 duty,1/5 bias。
- 環(huán)保標準:符合RoHS標準,體現(xiàn)了環(huán)保理念。
機械與電氣特性
機械繪圖
機械繪圖相關(guān)信息屬于Newhaven Display International公司的專有財產(chǎn),未經(jīng)許可不得復(fù)制、再現(xiàn)和披露。
引腳描述與接線圖
| Pin No. | Symbol | External Connection | Function Description |
|---|---|---|---|
| 1 | VSS | Power Supply | Ground |
| 2 | VDD | Power Supply | Supply Voltage for logic (+5.0V) |
| 3 | V0 | Adj Power Supply | Power supply for contrast (approx. 1.3V) |
| 4 | RS | MPU | Register Select signal. RS = 0: Command, RS = 1: Data |
| 5 | R/W | MPU | Read/Write select signal, R/W = 1: Read R/W: = 0: Write |
| 6 | E | MPU | Operation Enable signal. Falling edge triggered. |
| 7 - 10 | DB0 – DB3 | MPU | Four low order bi - directional three - state data bus lines. These four are not used during 4 - bit operation. |
| 11 - 14 | DB4 – DB7 | MPU | Four high order bi - directional three - state data bus lines. |
| 15 | LED+ | Power Supply | Backlight Anode (+5.0V via on - board resistor) |
| 16 | LED - | Power Supply | Backlight Cathode (Ground) |
推薦的LCD連接器為2.54mm間距引腳,不過文檔中未提及背光連接器的匹配信息。
電氣特性
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Operating Temperature Range | T OP | Absolute Max | -20 | - | +70 | ?C |
| Storage Temperature Range | T ST | Absolute Max | -30 | - | +80 | ?C |
| Supply Voltage | V DD | - | 4.5 | 5.0 | 5.5 | V |
| Supply Current | I DD | T OP = 25°C | 0.5 | 1.0 | 2.0 | mA |
| Supply for LCD (contrast) | V IH | V DD = 5.0V | 3.6 | 3.7 | 3.8 | V |
| “H” Level input | V IL | - | 0.7*V DD | - | V DD | V |
| “L” Level input | V OH | - | V SS | - | 0.6 | V |
| “H” Level output | V OL | - | 3.9 | - | V DD | V |
| “L” Level output | T OP | - | V SS | - | 0.4 | V |
| Backlight Supply Current | I LED | - | 10 | 32 | 40 | mA |
| Backlight Supply Voltage | V LED | I LED = 32mA | - | 5.0 | - | V |
從這些電氣特性可以看出,該模塊在較寬的溫度范圍內(nèi)都能正常工作,并且對電源的要求也比較常見,方便在不同的應(yīng)用場景中使用。
光學(xué)特性
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit | ||
|---|---|---|---|---|---|---|---|---|
| Optimal Viewing Angles | Top | ?Y+ | Cr ≥ 2 | - | 20 | - | ° | |
| Bottom | ?Y - | - | 40 | - | ° | |||
| Left | θX - | - | 30 | - | ° | |||
| Right | θX+ | - | 30 | - | ° | |||
| Contrast Ratio | Cr | - | - | 3 | - | - | ||
| Response Time | Rise | Tr | - | - | 150 | 200 | ms | |
| Fall | Tf | - | - | 150 | 200 | ms |
了解這些光學(xué)特性有助于我們在實際應(yīng)用中合理設(shè)置視角和對比度,以獲得最佳的顯示效果。
控制器信息
模塊內(nèi)置ST7066U控制器,其詳細規(guī)格可從http://www.newhavendisplay.com/app_notes/ST7066U.pdf下載。同時,文檔還給出了DDRAM地址的相關(guān)信息,方便我們進行數(shù)據(jù)的讀寫操作。
指令表
| Instruction | Instruction code | Description | 270 KHZ Execution time (fosc = | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RS | R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 | |||||||||||
| Clear Display | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | Write “20H” to DDRAM and set DDRAM address to “00H” from AC | 1.52ms |
| Return Home | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | - | Set DDRAM Address to “00H” from AC and return cursor to its original position if shifted. The contents of DDRAM are not changed. | 1.52ms |
| Entry mode Set | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | I/D | SH | Sets cursor move direction and specifies display shift. These parameters are performed during data write and read. | 37μs |
| Display ON/ OFF control | 0 | 0 | 0 | 0 | 0 | 0 | 1 | D | C | B | D = 1: Entire display on C = 1: Cursor on B = 1: Blinking cursor on | 37μs |
| Cursor or Display shift | 0 | 0 | 0 | 0 | 0 | 1 | S/C | R/L | - | - | Sets cursor moving and display shift control bit, and the direction without changing DDRAM data. | 37μs |
| Function set | 0 | 0 | 0 | 0 | 1 | DL | N | F | - | - | DL: Interface data is 8/4 bits N: Number of lines is 2/1 F: Font size is 5x11/5x8 | 37μs |
| Set CGRAM Address | 0 | 0 | 0 | 1 | AC5 AC4 AC3 AC2 AC1 AC0 | Set CGRAM address in address counter | 37μs | |||||
| Set DDRAM Address | 0 | 0 | 1 | AC6 AC5 AC4 AC3 AC2 AC1 AC0 | Set DDRAM address in address counter. | 37μs | ||||||
| Read busy Flag and Address | 0 | 1 | BF | AC6 AC5 AC4 AC3 AC2 AC1 AC0 | Whether during internal operation or not can be known by reading BF. The contents of address counter can also be read. | 0s | ||||||
| Write data To Address | 1 | 0 | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 | Write data into internal RAM (DDRAM/CGRAM). | 37μs |
| Read data From RAM | 1 | 1 | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 | Read data from internal RAM (DDRAM/CGRAM). | 37μs |
這些指令為我們控制顯示模塊提供了詳細的操作方法,工程師可以根據(jù)實際需求選擇合適的指令進行編程。
時序特性
從MPU向ST7066U寫數(shù)據(jù)
| Tc | Enable Cycle Time | Pin E | 1200 | ns | ||
|---|---|---|---|---|---|---|
| TPW | Enable Pulse Width | Pin E | 140 | ns | ||
| TR,TF | Enable Rise/Fall Time | Pin E | 25 | ns | ||
| TAS | Address Setup Time | Pins: RS,RW,E | 0 | 0 | ns | |
| TAH | Address Hold Time | Pins: RS,RW,E | 10 | - | ns | |
| TDSW | Data Setup Time | Pins: DB0 - DB7 | 40 | - | ns | |
| TH | Data Hold Time | Pins: DB0 - DB7 | 10 | ns |
從ST7066U向MPU讀數(shù)據(jù)
| Tc | Enable Cycle Time | Pin E | 1200 | - | ns | |
|---|---|---|---|---|---|---|
| TPW | Enable Pulse Width | Pin E | 140 | ns | ||
| TR,TF | Enable Rise/Fall Time | Pin E | - | 25 | ns | |
| TAS | Address Setup Time | Pins: RS,RW,E | 0 | 0 | ns | |
| TAH | Address Hold Time | Pins: RS,RW,E | 10 | ns | ||
| TDDR | Data Setup Time | Pins: DB0 - DB7 | - | 100 | ns | |
| TH | Data Hold Time | Pins: DB0 - DB7 | 10 | ns |
了解這些時序特性對于正確地進行數(shù)據(jù)讀寫操作至關(guān)重要,在設(shè)計電路和編寫程序時需要嚴格按照這些時序要求來進行。
初始化程序示例
文檔中給出了8位和4位初始化的程序示例,這為工程師在實際應(yīng)用中快速實現(xiàn)模塊的初始化提供了參考。大家可以根據(jù)自己的需求選擇合適的初始化方式。
質(zhì)量信息與注意事項
質(zhì)量測試
| Test Item | Content of Test | Test Condition | Note |
|---|---|---|---|
| High Temperature storage | Endurance test applying the high storage temperature for a long time. | +80?C , 200hrs | 2 |
| Low Temperature storage | Endurance test applying the low storage temperature for a long time. | -30?C , 200hrs | 1,2 |
| High Temperature Operation | Endurance test applying the electric stress (voltage & current) and the high thermal stress for a long time. | +70?C , 200hrs | 2 |
| Low Temperature Operation | Endurance test applying the electric stress (voltage & current) and the low thermal stress for a long time. | -20?C , 200hrs | 1,2 |
| High Temperature / Humidity Operation | Endurance test applying the electric stress (voltage & current) and the high thermal with high humidity stress for a long time. | +60?C , 90% RH , 96hrs | 1,2 |
| Thermal Shock resistance | Endurance test applying the electric stress (voltage & current) during a cycle of low and high thermal stress. | -20?C, 30min -> 25?C, 5min -> 70?C, 30min = 1 cycle For 10 cycles | |
| Vibration test | Endurance test applying vibration to simulate transportation and use. | 10 - 55Hz, 1.5mm amplitude. 60 sec in each of 3 directions X,Y,Z For 15 minutes | 3 |
| Static electricity test | Endurance test applying electric static discharge. | VS = ±600V(contact),±800V(air), RS = 330Ω, CS = 150pF 10 times |
這些測試表明該模塊在不同的環(huán)境條件下都具有較好的穩(wěn)定性和耐久性。
注意事項
使用LCDs/LCMs時的注意事項可在www.newhavendisplay.com/specs/precautions.pdf查看,同時,關(guān)于保修信息和條款可訪問http://www.newhavendisplay.com/index.php?main_page=terms。
綜上所述,NHD - 0216K1Z - NSW - BBW - L字符液晶顯示模塊具有豐富的功能和良好的性能,適用于多種電子設(shè)備的顯示需求。在實際應(yīng)用中,工程師們可以根據(jù)這些詳細的技術(shù)文檔進行合理的設(shè)計和開發(fā)。大家在使用過程中遇到過哪些問題呢?歡迎在評論區(qū)分享交流。
-
液晶顯示模塊
+關(guān)注
關(guān)注
0文章
130瀏覽量
12145
發(fā)布評論請先 登錄
深入解析NHD - 0216K1Z - NSW - BBW - L字符液晶顯示模塊
評論