12.2.
Communication Protocol
Font data can be accessed and read by using the READ command instruction.
Instruction
Code
Address
Bytes
3
Dummy
Bytes
1
Data
Bytes
1 ~ ∞
Instruction
Description
READ
Read Data (30MHz MAX)
0Bh
READ mode supports up to 30MHz frequency on MF_SCLK.
READ mode outputs the data starting from the specified address location. The data output stream is
continuous through all addresses until terminated by a low‐to‐high transition on /MF_CS2. The internal
address pointer will automatically increment after each byte is read.
READ instruction is initiated by executing an 8‐bit command [0x0B] on the MF_SI line, followed by the desired
font address bits [A23‐A0], and followed by an 8‐bit dummy write [0x00]. The font data will then be output on
MF_SO line, MSB first.
/MF_CS2 must remain active LOW for the duration of the read cycle.
[19]
NEWHAVEN [ NEWHAVEN DISPLAY INTERNATIONAL, INC. ]
