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Table 13.6 Pin Functions According to Display Mode and Display Duty
Pin Name
1/8 Duty
COM1 to COM8
COM1 to COM8 COM1 to
COM9/SEG64 to
Common signal
COM16/SEG57
non-selection
waveform
SEG1 to SEG40
SEG1 to SEG40 SEG1 to
COM32/SEG41 to
Common signal
COM25/SEG48
non-selection
waveform
COM24/SEG49 to
COM8 to COM1
COM17/SEG56
13.3.4
Display Memory Configuration and Display
The LCD controller includes 64 × 32-bit bit-mapped display memory. As the display memory
configuration, a 5-bit × 8 or 8-bit × n (n = 5, 7, or 8) X-direction combination can be selected,
while the Y-direction configuration is 32 bits. Display data written from the CPU is stored
horizontally with the MSB at the left and the LSB at the right, as shown in figure 13.4. On the
display, 1 data corresponds to illumination (black), and 0 data to non-illumination (colorless).
SOB = 0 (Character Display Mode)
1/16 Duty 1/32 Duty
COM16
SEG40
COM16 to
COM1
13. Dot Matrix LCD Controller (H8/3857 Group)
Function
SOB = 1 (Graphic Display Mode)
1/8 Duty
COM1 to
COM1 to
COM16
COM8
SEG64 to
SEG57
SEG1 to
SEG1 to
SEG40
SEG56
COM32 to
COM17
Rev.3.00 Jul. 19, 2007 page 347 of 532
1/16 Duty 1/32 Duty
COM1 to
COM1 to
COM16
COM16
SEG1 to
SEG1 to
SEG56
SEG40
COM32 to
COM17
REJ09B0397-0300
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