Datasheet HT16D33A/HT16D33B (Holtek) - 8

HT16D33A/HT16D33B HT16D33A/HT16D33B 16×16 Constant Current LED Driver 16×16 Constant Current LED Driver Pin Description Pin Name Type Function
VDD — Positive power supply for logic circuit VSS — Negative power supply for logic circuit, ground LEDVDD — Positive power supply for driver circuit LEDVSS — Negative power supply for driver circuit, ground AD/CSB I I2C interface device address data set input pin for I2C interface Chip Select pin for SPI 3-wire Interface Serial clock input pin SCL/CLK I Serial Clock (SCL) Input for I2C interface Serial Clock (CLK) Input for SPI 3-wire Interface Serial data input/output pin. Data is input to or comes out from the shift register at rising edge of SDA/DIO I/O the clock I2C interface serial data (SDA) Input/Output – NMOS open-drain output SPI 3-wire serial interface serial data input/output – CMOS output Synchronization clock Input/output pin SYNC I/O If the Master Mode command is programmed, the system clock is sourced from the internal RC oscillator and output on the SYNC pin. If the Slave Mode command is programmed, the system clock is input on the SYNC pin. CA0~CA19 I/O LED combinations of output pins. (row and commons combo pins) Constant current circuit, PWM control output pins, Control switch pin for matrix driver. NC — No connection Note: for SYNC and CA0~CA19 pins, the pin processing at unused is open.
Approximate Internal Connections
SCL, SDA (for schmit Trigger type) CSB, CLK (for schmit Trigger type) DIO (for schmit Trigger type) VDD VDD VDD VSS VSS VSS SYNC (for schmit Trigger type) CA0~CA19 LEDVDD VDD Scan Data VSS Rev. 1.10 8 April 11, 2019 Rev. 1.10 9 April 11, 2019 Document Outline Features Applications General Description Selection Table Block Diagram Pin Assignment Pin Description Approximate Internal Connections Absolute Maximum Ratings D.C. Characteristics A.C. Characteristics A.C. Characteristics – SPI 3-wire Serial Bus A.C. Characteristics – I2C Serial Bus Timing Diagrams SPI 3-wire Serial Bus Timing I2C Bus Timing Power on Reset Timing Functional Description Power-on Reset LED Driver System Oscillator Driver Outputs Address Pointer Open/Short Detection Function Over Temperature Protection Constant Current Output Load Supply Voltage – LED_VDD Display Data RAM – DDRAM PWM Data WidthTiming Fade Data RAM LED On/Off Control RAM Data Command Description Command Table Software Reset RAM Page Address Set Picture Display Address Movie Display Start Address Movie Playing Length Movie Cycle Time Movie Page Delay Time Last Page Set Picture Scrolling Control Display Mode Configuration Mode Fade Function Control Global Fade Time Cascade Mode System Control Constant Current Ratio Brightness Control Mode Control Blanking Control Voltage Setting Read Open Detection Data Read Short Detection Data Read Register Status Read Movie Frame Status Read Movie Loop Status Read Function Flag SPI 3-wire Serial Interface Write Operation Read Operation I2C Serial Interface Data Validity START and STOP Conditions Byte Format Acknowledge Slave Addressing Write Operation Read Operation Power Supply Sequence Operation Flow Charts Application Circuits LED Matrix Circuit RGB LED Matrix Circuit Single LED IC Application Cascade Function Cascade Control Flow Package Information 24-pin SSOP-EP (150mil) Outline Dimensions 28-pin SSOP (150mil) Outline Dimensions SAW Type 32-pin QFN (4mm×4mm×0.75mm) Outline Dimensions