WS2812C/W

WS2812C Intelligent control LED integrated light source Features and Benefits             Operating Current of 5mA, the brightness reduced to one-third of the original, it’s preferred for portable electronic devices. WS2812C is fully compatible with WS2812B. The control circuit and the LED share the same power source. Control circuit and RGB chip are integrated in a package of 5050 components, to form a complete addressable pixel. Built-in signal reshaping circuit, after wave reshaping to the next driver, ensure wave-form distortion not accumulate. Built-in electric reset circuit and power lost reset circuit. Each pixel of the three primary color can achieve 256 brightness display, completed 16777216 color full color display, and scan frequency is of 2KHz. Cascading port transmission signal by single line. Any two point the distance not more than 3m transmission signal without any increase circuit. When the refresh rate is 30fps, cascade number is at least 1024 pixels. Send data at speeds of 800Kbps. The color of the light is highly consistent, cost-effective.. Applications  Full-color module, Full color soft lights a lamp strip.  LED decorative lighting, Indoor/outdoor LED video irregular screen. General description WS2812C is a intelligent control LED light source that the control circuit and RGB chip are integrated in a package of 5050 components. It internal include intelligent digital port data latch and signal reshaping amplification drive circuit. Also include a precision internal oscillator and a 12V voltage programmable constant current control part, effectively ensuring the pixel point light color height consistent. The data transfer protocol use single NZR communication mode. After the pixel power-on reset, the DIN port receive data from controller, the first pixel collect initial 24bit data then sent to the internal data latch, the other data which reshaping by the internal signal reshaping amplification circuit sent to the next cascade pixel through the DO port. After transmission for each pixel, the signal to reduce 24bit. pixel adopt auto reshaping transmit technology, making the pixel cascade number is not limited the signal transmission, only depend on the speed of signal transmission. RESET time>280μs , it won't cause wrong reset while interruption, it supports the lower frequency and inexpensive MCU. Refresh Frequency updates to 2KHz, Low Frame Frequency and No Flicker appear in HD Video Camera, it improve excellent display effect. LED with low driving voltage, environmental protection and energy saving, high brightness, scattering angle is large, good consistency, low power, long life and other advantages. The control chip integrated in LED above becoming more simple circuit, small volume, convenient installation. 1/8 http://www.world-semi.com WS2812C Intelligent control LED integrated light source Mechanical Dimensions Remarks: Dimension of 5.0*5.4*1.57mm, default Tolerance of 0.05mm. PIN Configuration PIN Function NO. Symbol Function description 1 VDD Power supply LED 2 DOUT Control data signal output 3 VSS Ground 4 DIN Control data signal input Absolute Maximum Ratings Parameter Symbol Ratings Unit Power supply voltage VDD +3.5~+5.3 V Input voltage VI -0.5～VDD+0.5 V Operation junction temperature Topt -25～+85 ℃ Storage temperature range Tstg -40~+105 ℃ 2/8 http://www.world-semi.com WS2812C Intelligent control LED integrated light source Electrical Characteristics (TA=-20～+70℃, VDD=4.5～5.5V, VSS=0V, unless otherwise specified) Parameter Symbol Conditions Min Tpy Max Unit Input current II VI=VDD/VSS —— —— ±1 µA VIH DIN, SET 0.7VDD —— —— V VIL DIN, SET —— —— 0.3 VDD V VH DIN, SET —— 0.35 —— V Input voltage level Hysteresis voltage Switching Characteristics (TA=-20～+70℃, VDD=4.5～5.5V, VSS=0V, unless otherwise specified) Parameter Symbol Condition Min Tpy Max Unit Transmission delay time tPLZ CL=15pF, DIN→DOUT, RL=10KΩ —— —— 300 ns Fall time tTHZ CL=300pF, OUTR/OUTG/OUTB —— —— 120 µs Input capacity CI —— —— —— 15 pF LED Characteristics Ref. Value Quiescent Current 0.3mA RGB Channel Constant Current 5mA RED Brightness (Central Value) 60mcd GREEN Brightness (Central Value) 245mcd BLUE Brightness (Central Value) 65mcd WHITE Brightness (Central Value) 365mcd RED Wavelength 620-625nm GREEN Wavelength 515-525nm BLUE Wavelength 465-475nm Data Transfer Time T0H 0 code, high voltage time 220ns~380ns T1H 1 code, high voltage time 580ns~1.6µs T0L 0 code, low voltage time 580ns~1.6µs T1L 1 code, low voltage time 220ns~420ns RES Frame unit, low voltage time >280µs 3/8 http://www.world-semi.com WS2812C Intelligent control LED integrated light source Sequence Chart 0 code Cascade Method T0L D1 T0H DIN DO T1L 1 code D2 PIX1 T1H DIN DO D3 PIX2 DIN DO D4 PIX3 Treset RET code Data Transmission Method Note: The data of D1 is send by MCU, and D2, D3, D4 through pixel internal reshaping amplification to transmit. Composition of 24bit Data G7 G6 G5 G4 G3 G2 G1 G0 R7 R6 R5 R4 R3 R2 R1 R0 B7 B6 B5 B4 B3 B2 B1 B0 Note: Data transmit in order of GRB, high bit data at first. Typical Application Circuit Remarks: C1 is the filter capacitor for VDD, its value of 100NF. 4/8 http://www.world-semi.com WS2812C Intelligent control LED integrated light source Leade-free Reflow (SMT Line) Curve Description Lead-free Reflow Solder/SMT The lowest preheat temperature (Tsmin) 150℃ The highest preheat temperature (Tsmax) 200℃ Preheating time (Tsmin to Tsmax) (ts) 60-180 S Average rate of temperature rise (Tsmax to Tp)