Toshiba T6K04 Handbook page 22

● Expansion function
The T6K04 has expansion function, when using this function, the T6K04 (2 chips) can drive 256 × 64 dots
LCD panel (maximum).
Next table shows the selectable function by using M / S, EXP pins.
● Two chips mode (Enable expansion mode)
"H" ● Master chip
COM1~COM64 are available.
EXP
● One chip mode (Disable expansion mode)
"L"
● COM1~COM64 are available.
Fig. 13−1 and −2 illustrate the application example of Disable expansion mode and enable expansion mode.
In Enable Expansion Mode (Two chips mode)
As shown in Fig. 13−2, Fig.14 Master chip supplies LCD drive signals and power voltage to Slave chip (The
Oscillator, the timing circuits, Op−Amp. and Contrast control circuit are disabled)
(1) Disable expansion
M / S
"H"
Fig. 13−1
"L"
● Two chips mode (Enable expansion mode)
● Slave chip
● COM1~COM64 are available.
● Timing signals and power voltage are supplied
from Master Chip.
● Do not select
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T6K04