Datasheet HT16D35A/HT16D35B (Holtek) - 3

HT16D35A/HT16D35B Pin Description Pin Name Type Function
VDD — Positive power supply for logic circuits VSS — Negative power supply for logic circuits – ground LED_VDD — Positive power supply for driver circuits LED_VSS — Negative power supply for driver circuits – ground A0/CSB I I2C interface device address data 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 the SDA/DIO I/O clock rising edge. I2C interface serial data (SDA) Input/Output – NMOS open-drain output. SPI 3-wire serial interface serial data input/output – CMOS output. System OSC Input / output pin. If the IRC Mode command is programmed, the system clock is sourced from the internal OSC I/O RC oscillator and the system clock is output on the OSC pin. If the Slave Mode or ERC Mode command is programmed, the system clock is sourced from an external clock on the OSC pin. If the MASTER MODE command is programmed, the synchronous signal is output on SYNC I/O the SYNC pin. If the SLAVE MODE command is programmed, the synchronous signal is input on the SYNC pin. R_EXT I External resistor connection input. Connected to an external resistor to setup the output port current level. COM0~COM7 O LED common output pins. ROW0~ROW27 O LED row output pins.
Absolute Maximum Ratings
Supply Voltage ... VSS-0.3V to VSS+6.0V Power Dissipation (PD): Input Voltage ..VSS-0.3V to VDD+0.3V (@Ta=25°C) .. 2.5W Operating Temperature ...-40°C to 85°C (@Ta=85°C) .. 1.0W Storage Temperature ...-50°C to 125°C ROW Output Current (Single pin) ...100mA Thermal Resistance (Rth) ...40°C/W Total Power Line Current (Ta=25°C) ..1000mA Max junction Temperature (Tj) ..125°C Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Rev. 1.00 3 July 12, 2017 Document Outline Features Applications General Description Selection Table Block Diagram Pin Assignment Pin Description 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 ROW Driver Outputs Column Driver Outputs Address Pointer Over Temperature Protection Constant Current Output Setting the Output Current Load Supply Voltage – LED_V Display Data RAM – DDRAM LED Driver Output Waveform Output Signal Timing Fade Data RAM Universal COM (UCOM) RAM Data Universal SEG (USEG) RAM Data Matrix Masking RAM Data Command Description – Command Table Software Reset Binary/Gray Select Number of COM Outputs Global Blinking Cascade Mode System Control Constant Current Ratio Global Brightness Mode Control Scrolling Control Scrolling Speed COM Pin Control ROW Pin Control Direct Pin Control Read Flag Read Status Write Display Data Write Fade Data Write UCOM Data Write USEG Data Write Matrix Masking Data SPI 3-wire Serial Interface I2C Serial Interface Power Supply Sequence Operation Flow Chart Application Circuits LED Matrix Circuit Single LED IC Application Cascade Function Cascade Control Flow Package Information 48-pin LQFP (7mm×7mm) Outline Dimensions (Exposed Pad)