UPD780949 datasheet(50/69 Pages) RENESAS

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µPD780949(A)

LCD C/D 1/2 BIas Method

Note:

The voltage deviation is the difference from the output voltage corresponding to the ideal value

of the segment and common outputs (VLCDN; n = 0, 1, 2).

Table 12-8: DC Characteristics 1/2 Bias Method

Parameter

Symbol

Test Conditions

MIN

TYP

MAX.

Unit

LCD drive voltage

VLCD

3.0

VDD

LCD split resistor

RLCD

515

Ω

LCD output voltage

deviation

Note

(common)

VODC

IO = ± 5 µA

±0.2

LCD output voltage

deviation

Note

(segment)

VODS

IO = ± 1 µA

3.0 V

≤ VLCD ≤ VDD

VLCD0 = VLCD

VLCD1 = VLCD x 1/2

VLCD2 = VLCD x 1/2

0±0.2

LCD C/D 1/3 Bias Method

Note:

The voltage deviation is the difference from the output voltage corresponding to the ideal value

of the segment and common outputs (VLCDN; n = 0, 1, 2).

Table 12-9: DC Characteristics 1/3 Bias Method

Parameter

Symbol

Test Conditions

MIN

TYP

MAX.

Unit

LCD drive voltage

VLCD

3.0

VDD

LCD split resistor

RLCD

515

Ω

LCD output voltage

deviation

Note

(common)

VODC

IO = ± 5 µA

±0.2

LCD output voltage

deviation

Note

(segment)

VODS

IO = ± 1 µA

3.0 V

≤ VLCD ≤ VDD

VLCD0 = VLCD

VLCD1 = VLCD x 2/3

VLCD2 = VLCD x 1/3

0±0.2

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