Specifications

I-44 EPSON S1C6S2N7 TECHNICAL HARDWARE

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver)

Table 4.6.2 shows the control bits of the LCD driver and

their addresses. Figure 4.6.9 shows the display memory

map.

Control of LCD

driver

CSDC

Display memory

Fig. 4.6.9

Display

memory map

Address

0123456789ABCDEF

090

0A0

Display memory (Write only)

32 words x 4 bits

Table 4.6.2 Control bits of LCD driver

LCD drive switch (0FBH D3)

The LCD drive format can be selected with this switch.

When 1 is written: Static drive

When 0 is written: Dynamic drive

Reading: Valid

After an initial reset, dynamic drive (CSDC = 0) is selected.

(090H–0AFH)

The LCD segments are turned on or off according to this

data.

When 1 is written: On

When 0 is written: Off

Reading: Invalid

By writing data into the display memory allocated to the

LCD segment (on the panel), the segment can be turned on

or off. After an initial reset, the contents of the display

memory are undefined.

Address Comment

D3 D2 D1 D0 Name SR 1 0

0FBH

CSDC 0 0 0

LCD drive switch

Static Dynamic

R/W

CSDC