探索NHD - 1.5 - Breakout:1.5英寸彩色OLED玻璃 breakout板詳解
在電子設(shè)計(jì)領(lǐng)域,顯示模塊的設(shè)計(jì)與應(yīng)用至關(guān)重要。今天,我們來(lái)深入了解Newhaven Display推出的NHD - 1.5 - Breakout,這是一款專(zhuān)門(mén)為1.5英寸彩色OLED玻璃設(shè)計(jì)的breakout板。
文件下載:NHD-1.5-BREAKOUT.pdf
一、產(chǎn)品概述
NHD - 1.5 - Breakout是Newhaven Display International, Inc.旗下的產(chǎn)品,其對(duì)角線尺寸為1.5英寸。該公司位于Elgin IL,聯(lián)系電話為847 - 844 - 8795,傳真為847 - 844 - 8796,郵箱為nhtech@newhavendisplay.com和nhsales@newhavendisplay.com,官方網(wǎng)站是www.newhavendisplay.com。
二、功能與特性
2.1 適配與電路設(shè)計(jì)
它是專(zhuān)門(mén)為1.5英寸彩色OLED玻璃(NHD - 1.5 - 128128G)設(shè)計(jì)的breakout板,板載有升壓電路(FAN5331SX)。同時(shí),還提供了跳線選項(xiàng),可繞過(guò)升壓電路,直接提供(V_{cc})。并且,該產(chǎn)品屬于開(kāi)源硬件,方便開(kāi)發(fā)者進(jìn)行二次開(kāi)發(fā)。
2.2 硬件布局
從硬件布局來(lái)看,它有OLED顯示屏、用戶界面、LED驅(qū)動(dòng)器、LED驅(qū)動(dòng)電源指示燈以及3.5mm的安裝孔等。
三、引腳描述
3.1 電源引腳
| Pin No. | Symbol | External Connection | Function Description |
|---|---|---|---|
| 1 | GND | Power Supply | Ground |
| 2 | 3V3 | Power Supply | Supply Voltage for OLED Logic (+3.3V) |
| 3 | DRV_VDD | Power Supply | Supply Voltage for boost converter (+5V) to drive OLED panel voltage (VCC). (Should be no connect if using pin 4 to apply external VCC) |
| 4 | N.C./VCC | - | No Connect by default. Can be configured for external VCC (+13V). (refer to On - Board Jumper Options table below) |
| 23 - 26 | GND | Power Supply | Ground |
3.2 控制引腳
| Pin No. | Symbol | External Connection | Function Description |
|---|---|---|---|
| 5 | SHDN# | MPU | Active LOW Shutdown control pin for boost converter (pulled HIGH via on - board 10kΩ resistor) |
| 6 | GPIO0 | MPU | See command 0xB5 (can be treated as a no connect) |
| 7 | GPIO1 | MPU | See command 0xB5 (can be treated as a no connect) |
| 8 | RES# | MPU | Active LOW Reset signal |
| 9 | D/C# | MPU | Register Select signal. LOW: Command. HIGH: Data |
| 10 | CS# | MPU | Active LOW Chip Select signal |
| 11 | BS1 | MPU | MPU interface select signal |
| 12 | BS0 | MPU | MPU interface select signal |
| 13 | R/W# | MPU | 6800 mode : Read/Write signal. LOW: Write. HIGH: Read 8080 mode : Active LOW Write signal |
| 14 | E/RD# | MPU | 6800 mode : Enable signal. Falling edge triggered 8080 mode : Active LOW Read signal |
3.3 數(shù)據(jù)引腳
| Pin No. | Symbol | External Connection | Function Description |
|---|---|---|---|
| 15 | D0/SCK | MPU | Parallel interface : |
| 16 | D1/SDIN | MPU | 8 - bit bi - directional data bus Serial interface : D0 = Serial Clock signal (SCK) D1 = Serial Data Input signal (SDIN) |
| 17 | D2 | MPU | |
| 18 | D3 | MPU | |
| 19 | D4 | MPU | |
| 20 | D5 | MPU | |
| 21 | D6 | MPU | |
| 22 | D7 | MPU |
四、MPU接口引腳分配總結(jié)
| Bus Interface | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 | E | R/W | BS0 | BS1 | CS# | D/C# | RES# | GPIO1 | GPIO0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 - bit 6800 | D[7:0] | E | R/W | 1 | 1 | CS# | D/C# | RES# | NC | NC | |||||||
| 8 - bit 8080 | D[7:0] | RD# | WR# | 0 | 1 | CS# | D/C# | RES# | NC | NC | |||||||
| 4 - wire SPI | 0 | NC | SDIN | SCK | 0 | 0 | 0 | 0 | CS# | D/C# | RES# | NC | NC | ||||
| 3 - wire SPI | 0 | NC | SDIN | SCK | 0 | 0 | 1 | 0 | CS# | 0 | RES# | NC | NC |
這里“X”表示不關(guān)心,“NC”表示不連接,“1”表示VDD,“0”表示VSS。大家在實(shí)際設(shè)計(jì)中,要根據(jù)具體的接口類(lèi)型來(lái)正確連接引腳,你是否遇到過(guò)因?yàn)橐_連接錯(cuò)誤而導(dǎo)致的問(wèn)題呢?
五、板載跳線選項(xiàng)
5.1 默認(rèn)跳線設(shè)置
| R10 | R11 | Description |
|---|---|---|
| Open | Close | (default) Boost converter circuit (+5V on pin 3) is used to provide VCC to OLED Glass. |
5.2 跳線選項(xiàng)1 - 外部電源供應(yīng)
| R10 | R11 | Description |
|---|---|---|
| Close | Open | Boost converter circuit (pin 3) is not used. |
| User must apply VCC (+13V) externally to (pin 4). | ||
| OLED logic is still powered from 3V3 (pin 2). | ||
| This method allows for minimum current drain. |
六、電氣特性
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Operating Temperature Range | T OP | Absolute Max | -40 | - | +70 | ?C |
| Storage Temperature Range | T ST | Absolute Max | -40 | - | +85 | ?C |
| Supply Voltage for OLED Logic | 3V3 | - | 2.8 | 3.0 | 3.5 | V |
| Supply Voltage for Boost Circuit | DRV_VDD | - | - | 5.0 | 5.5 | V |
| Supply Voltage for OLED Panel | V CC | - | 12.5 | 13.0 | 13.5 | V |
需要注意的是,不建議在未連接顯示屏的情況下給板卡供電,否則可能會(huì)損壞升壓電路,Newhaven Display對(duì)此類(lèi)損壞導(dǎo)致的PCB故障不承擔(dān)責(zé)任。
七、兼容OLED玻璃
該板專(zhuān)門(mén)設(shè)計(jì)用于驅(qū)動(dòng)和引出NHD - 1.5 - 128128G的信號(hào),你可以從http://www.newhavendisplay.com/specs/NHD - 1.5 - 128128G.pdf下載其規(guī)格書(shū)。
八、質(zhì)量信息與注意事項(xiàng)
8.1 質(zhì)量測(cè)試
| Test Item | Content of Test | Test Condition | Note |
|---|---|---|---|
| High Temperature storage | Test the endurance of the display at high storage temperature. | +85?C, 240 Hrs. | 2 |
| Low Temperature storage | Test the endurance of the display at low storage temperature. | -40?C, 240 Hrs. | 1,2 |
| High Temperature Operation | Test the endurance of the display by applying electric stress (voltage & current) at high temperature. | +70?C, 240 Hrs. | 2 |
| Low Temperature Operation | Test the endurance of the display by applying electric stress (voltage & current) at low temperature. | -40?C, 240 Hrs. | 1,2 |
| High Temperature / Humidity Operation | Test the endurance of the display by applying electric stress (voltage & current) at high temperature with high humidity. | +60?C, 90% RH, 120 Hrs. | 1,2 |
Note 1: No condensation to be observed. Note 2: Conducted after 2 hours of storage at 25?C, 0%RH.
8.2 注意事項(xiàng)
使用OLEDs/LCDs/LCMs的注意事項(xiàng)可參考www.newhavendisplay.com/specs/precautions.pdf,保修信息可查看http://www.newhavendisplay.com/index.php?main_page=terms。
總之,NHD - 1.5 - Breakout是一款功能豐富、設(shè)計(jì)靈活的breakout板,在彩色OLED顯示模塊的設(shè)計(jì)中具有很大的應(yīng)用潛力。你在使用類(lèi)似的breakout板時(shí),有沒(méi)有什么獨(dú)特的經(jīng)驗(yàn)或遇到過(guò)什么挑戰(zhàn)呢?歡迎在評(píng)論區(qū)分享。
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探索NHD - 1.5 - Breakout:1.5英寸彩色OLED玻璃breakout板詳解
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