Cypress S6J3200 Series, Manual

Page: 1074 / 1355

CHAPTER 28:LCD Controller
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 1073
7.2.
How to Set VRAM?
This section shows how to set VRAM.
<Duty drive>
The matrix of pins and bit locations of VRAM (n) is shown below. (n = 0 to 15)
1/2 Duty
Pin COM1 COM0
SEG 2n
bit1 bit0
SEG 2n+1
bit5 bit4
1/3 Duty
Pin COM2 COM1 COM0
SEG 2n
bit2 bit1 bit0
SEG 2n+1
bit6 bit5 bit4
1/4 Duty
Pin COM3 COM2 COM1 COM0
SEG 2n
bit3 bit2 bit1 bit0
SEG 2n+1
bit7 bit6 bit5 bit4
(Non-selection waveforms are output from irrelevant pins.)
Example: 1/4 duty
When the bit6 of VRAMn is set to "1", the selection waveform is output from the SEGn+1 of COM2.
For bits with "0"setting, non-selection waveforms are output to pins.