Epson SED1278F/D Especificações descarregar pdf (Página 259)

100

101

8–18 EPSON

SED1240 Series

• Voltage regulating circuit using the electronic volume

function

When the electronic volume function is used, the

liquid crystal drive voltage V

5 can be controlled by the

command to adjust the density of liquid crystal display.

Regarding this method, set 5-bit data in the electronic

volume register, and the liquid crystal drive voltage

5 can take one of 32 states of voltage value.

When the electronic volume function is used, the

voltage regulating circuit must be turned on by the

power control command.

−

• •

R a

REG

n a

[Constant setup example when using the electronic volume function]

Table 6

= (1 +

) × V

However: VEV = VREG – α

α = V

REG / 150

No. Electronic volume register α V5

0 (0, 0, 0, 0, 0) 0 Large

1 (0, 0, 0, 0, 1) 1α •

2 (0, 0, 0, 1, 0) 2α •

3 (0, 0, 0, 1, 1) 3α •

•• ••

30 (1, 1, 1, 1, 0) n-1α •

31 (1, 1, 1, 1, 1) nα Small

When the electronic volume function is not used, set the electronic volume register to (0,0,0,0,0).

1 2 ... 254 255 256 257 258 259 260 261 262 263 264 ... 370 371

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Epson SED1278F/D Especificações Página 259

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