EM62100AGH datasheet(28/60 Pages) EMC

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EM62100

65 COM/132 SEG STN LCD Driver

22 •

•••

Product Specification (V1.1) 09.13.2005

(This specification is subject to change without further notice)

V0 = (1+

) x VEV = (1+

) x (1-

162

−

) x VREG ------------------- (a)

VEV

OUT

VEV (constant voltage supply

+ electronic volume)

Fig. 9

VREG is the IC internal fixed voltage supply, and its voltage at Ta = 25°C is as shown

below.

Equipment Type

Thermal Gradient

Units

VREG

Internal power supply

-0.05

% /

2.1

The

α is set to 1 level of 64 possible levels of the electronic volume function depending

on the data set in the 6-bit electronic volume register. Table 12 shows the value for

depending on the electronic volume register settings.

Table 12

Minimum

(Default)

Maximum

Rb/Ra is the V0 voltage regulator internal resistor ratio and can be set to 8 different

levels through the V0 voltage regulator internal resistor ratio set command. The

(1+Rb/Ra) ratio assumes the values shown in Table 13 depending on the 3-bit data

settings in the V0 voltage regulator internal resistor ratio register.

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