Datasheet HT16D35A/HT16D35B (Holtek) - 7
| Manufacturer | Holtek |
| Description | RAM Mapping 28×8 Constant Current LED Driver |
| Pages / Page | 71 / 7 — HT16D35A/HT16D35B. I2C Bus Timing. Power on Reset Timing |
| Revision | 1.00 |
| File Format / Size | PDF / 2.3 Mb |
| Document Language | English |
HT16D35A/HT16D35B. I2C Bus Timing. Power on Reset Timing
Model Line for this Datasheet
Text Version of Document
HT16D35A/HT16D35B I2C Bus Timing
SDA tf t t SU:DAT BUF tLOW tr tHD:STA tSP SCL tHD:STA t t SU:STO HD:DAT tHIGH tSU:STA
S Sr P S
tAA SDA OUT
Power on Reset Timing
VDD RRVDD tPOR VPOR Time Note: 1. If the reset timing conditions are not satisfied during the power ON/OFF sequence, the internal Power on Reset (POR) circuit will not operate normally. 2. If it is difficult to meet power on reset timing conditions, execute software reset command after Power on. Rev. 1.00 7 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)
SDA tf t t SU:DAT BUF tLOW tr tHD:STA tSP SCL tHD:STA t t SU:STO HD:DAT tHIGH tSU:STA
S Sr P S
tAA SDA OUT
Power on Reset Timing
VDD RRVDD tPOR VPOR Time Note: 1. If the reset timing conditions are not satisfied during the power ON/OFF sequence, the internal Power on Reset (POR) circuit will not operate normally. 2. If it is difficult to meet power on reset timing conditions, execute software reset command after Power on. Rev. 1.00 7 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)
