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HT16K23 Datasheet(PDF) 11 Page - Holtek Semiconductor Inc |
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HT16K23 Datasheet(HTML) 11 Page - Holtek Semiconductor Inc |
11 / 33 page Rev. 1.00 10 �a��� 0�� �011 Rev. 1.00 11 �a��� 0�� �011 HT16K23 RAM Mapping 20*4/16*8 LCD Controller Driver with keyscan Timing Diagrams ● I2C Timing SDA SCL tf tHD:SDA tLOW t� tHD:DAT tSU:DAT tHIGH tSU:STA tHD:STA S Sr tSP tSU:STO P tBUF S tAA SDA OUT ● Power-on Reset Timing V DD t SR t OF F Functional Description Power-on Reset When power is turned on, the IC is initialised by the internal power-on reset circuit. The status of the internal circuit after initialization is as follows: ● Display mode is 20*4, 20 segments and 4 commons. ● System oscillator is off. ● LCD Display is off. ● Key scan stopped. ● All common pins are set to VSS. ● All segment pins are in an input state. ● SEG19/COM4/INT pin is set to segment driver. ● The control registers, key data RAM and display data RAM are set to a default value. Data transfers on the I2C-bus should be avoided for 1 ms following power-on to allow completion of the reset procedure. |
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