2 layers308.8 × 130.3 mm
CyberKeeb2040
zli117/CyberKeeb2040
Hardware design for a mechanical keyboard based on RP2040 that also has a Pi Zero onboard.
182 parts98CC-BY-SA-4.0
WS2812
Worldsemi
1.57mm 1000mcd 110mcd 120us 2kHz 3.7V~5.3V 300ns 320mcd 451nm 523nm 5mm 5mm 623nm 800Kbit/s Built-in power-on reset circuit、Built-in power-on reset circuit Top-mount SMD5050-4P RGB LEDs(Built-in IC) ROHS
Extended
- Category
- RGB LEDs(Built In IC)
- Package
- SMD5050-4P
- Pins
- 4
Overview
The WS2812 is a RGB LED made by Worldsemi in a SMD5050-4P package with 4 pins. 1.57mm 1000mcd 110mcd 120us 2kHz 3.7V~5.3V 300ns 320mcd 451nm 523nm 5mm 5mm 623nm 800Kbit/s Built-in power-on reset circuit、Built-in power-on reset circuit Top-mount SMD5050-4P RGB LEDs(Built-in IC) ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:COM-16347, from EasyEDA) and its footprint (EasyEDA_Cloud:LED-SMD_4P-L5.0-W5.0-TL-A, from EasyEDA), ready for a KiCad board. 50,241 are in stock at JLCPCB (part C42417498). 124 open-source boards in 100 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
1- Supply, absolute maximum
- 5.3 V · VDD, absolute maximum · p. 2
What it is and has
10- Package
- 5050, integrated controller and RGB chips · p. 1
- Supply
- Shared supply for controller and LEDs · p. 1
- Signal conditioning
- Built-in signal reshaping · p. 1
- Reset
- Power-on and power-down reset · p. 1
- Color resolution
- 256 brightness levels per primary color; 16777216 colors · p. 1
- Port scan frequency
- 2KHz/s · p. 1
- Interface
- Single-wire serial cascade · p. 1
- Cascade capacity
- At least 1024 pixels at 30 frames/s · p. 1
- Data rate
- Up to 800Kbps · p. 1
- Data order
- GRB, most significant bit first · p. 4
Around it
1- cap 100nf
- between GND and VDD; Optional filter capacitor depending on supply quality. · p. 4
Specifications
19| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| 电源电压 VDD | TA=25℃, VSS=0V | min 3.7 · max 5.3 V | 2 |
| 逻辑输入电压 VI | TA=25℃, VSS=0V; upper limit VDD+0.7 V | min -0.3 V | 2 |
| 输入电流 II | TA=25℃, VDD=5V, VSS=0V; VI=VDD/VSS; maximum magnitude ±1 uA | max 1 uA | 2 |
| 低电平输入 VIL | TA=25℃, VDD=5V, VSS=0V; DIN，SET | min -0.3 · max 0.7 V | 2 |
| 传输延迟时间 tPLZ | TA=25℃, VDD=5V, VSS=0V; CL=15pF, DIN→DOUT, RL=10KΩ | max 300 ns | 2 |
| 下降时间 tTHZ | TA=25℃, VDD=5V, VSS=0V; CL=300pF, OUTR/OUTG/OUTB | max 120 us | 2 |
| 输入电容 CI | TA=25℃, VDD=5V, VSS=0V | max 15 pF | 2 |
| 静态电流 | <0.6mA | max 0.6 mA | 3 |
| 发光强度 IV | Red; 工作电流 12.5mA | min 260 · typ 320 · max 380 mcd | 3 |
| 发光强度 IV | Green; 工作电流 12.5mA | min 850 · typ 1000 · max 1200 mcd | 3 |
| 发光强度 IV | Blue; 工作电流 12.5mA | min 90 · typ 110 · max 130 mcd | 3 |
| 波长 λd | Red; 工作电流 12.5mA | min 620 · typ 623 · max 625 nm | 3 |
| 波长 λd | Green; 工作电流 12.5mA | min 520 · typ 523 · max 525 nm | 3 |
| 波长 λd | Blue; 工作电流 12.5mA | min 449 · typ 451 · max 454 nm | 3 |
| 0 码，高电平时间 T0H | min 220 · max 380 ns | 3 | |
| 1 码，高电平时间 T1H | Minimum in ns; maximum in us | min 580 · max 1 ns/us | 3 |
| 0 码，低电平时间 T0L | Minimum in ns; maximum in us | min 580 · max 1 ns/us | 3 |
| 1 码，低电平时间 T1L | Minimum in ns; maximum in us | min 580 · max 1 ns/us | 3 |
| 帧单位，低电平时间 RES | 280us 以上 | min 280 us | 3 |
Pins, by the datasheet
4- 1 VDD
- 供电管脚。 · p. 2
- 2 DOUT
- 控制数据信号输出。 · p. 2
- 3 VSS
- 信号接地和电源接地。 · p. 2
- 4 DIN
- 控制数据信号输入。 · p. 2
Parameters
17- Data Transmission Rate
- 800Kbit/s
- Dominant Wavelength - B
- 451nm
- Dominant Wavelength - G
- 523nm
- Dominant Wavelength - R
- 623nm
- Fall Time
- 120us
- Features
- Built-in power-on reset circuit
- Fixed-Frequency Pwm Mode
- 2kHz
- Height
- 1.57mm
- Installation method
- Top-mount
- Length
- 5mm
- Luminous Intensity - B
- 110mcd
- Luminous Intensity - G
- 1000mcd
- Luminous Intensity - R
- 320mcd
- Transmission Delay
- 300ns
- Voltage - Supply
- 3.7V~5.3V
- Voltage - Supply(Absolute Max)
- 5.3V
- Width
- 5mm
Order codes
1- WS2812LCSC C42417498
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | VDD | Unspecified |
| 2 | DOUT | Unspecified |
| 3 | VSS | Unspecified |
| 4 | DIN | Unspecified |
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This repo holds a variation of the lets split. This board requires no soldering
214 parts49BSD-3-Clause - 2 layers113.4 × 55.3 mm
- 2 layers120 × 90 mm
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Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/worldsemi/WS2812" title="WS2812 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/worldsemi/WS2812.jpg" alt="WS2812" width="1200" height="900">[](https://pcbkit.io/parts/worldsemi/WS2812)Questions
Is there a KiCad symbol and footprint for the WS2812?
Yes. The symbol is EasyEDA_Cloud:COM-16347 and the footprint EasyEDA_Cloud:LED-SMD_4P-L5.0-W5.0-TL-A, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the WS2812?
SMD5050-4P, with 4 pins. Its footprint is drawn on this page.
Where is the WS2812 datasheet?
Worldsemi publishes it: the Datasheet link on this page opens it.
Where can I order the WS2812?
JLCPCB lists it as part C42417498, with 50,241 in stock; the sellers' links on this page open their listings.
Which open-source boards use the WS2812?
124 boards in 100 repositories on GitHub; the most starred are listed on this page, with their KiCad files.