12.Multi‐Font IC ‐> MPU Interface
12.1. Serial Interface
The serial interface consists of serial clock MF_SCLK, serial data in MF_SI, serial data out MF_SO, chip enable
/MF_CS2.
Function
MF_SCLK MF_SI MF_SO /MF_CS2
Send Font Address
Read Font Data
↑
↓
DATA
X
X
0
0
DATA
The Multi‐Font device is enabled by a high‐to‐low transition on /MF_CS2. /MF_CS2 must remain LOW for the
duration of any command‐in or data‐out sequence.
The Font Address is shifted in on the MF_SI line on the rising edge of MF_SCLK.
The Font Data is shifted out on the MF_SO line on the falling edge of MF_SCLK.
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NEWHAVEN [ NEWHAVEN DISPLAY INTERNATIONAL, INC. ]
