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Functional Description
Question 1
The HT1632 has two kinds of display types: 32 out bits/8 commons and 24 out bits/16 commons, how are they setup?
Answer
They are setup using software, using the main controller to send commands to the HT1632. If 100001000xxxB is transmitted or 100001010xxxB instruction code, then the HT1632 will display in 32x8 format. If 100001001xxxB is transmitted or 100001011xxxB instruction code, then the display will be in 24x16 format. (x represents an unknown bit which will not influence the result)
If the two bits, C4 and C3 are 00 and 01 then this indicates that it is working in the NMOS open-drain mode. If 10 and 11 then this indicates that it is working in the PMOS open-drain mode. The order for transmitting instruction codes is as follows:
Application Description
Question 1
What are the differences in the instruction format transmission between the LED Driver HT1632 and the LCD Driver HT1621?
Answer
When reading, writing and changing the mode, the method of transmitting instructions with the MCU is different. The HT1632 needs to transmit a 7-bit address and the HT1621 needs to transmit a 6-bit address.
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