S3A3 datasheet(119/139 Pages) RENESAS

119 / 139 page

R01DS0307EU0100 Rev.1.00

Page 119 of 139

Mar 7, 2017

S3A3

2. Electrical Characteristics

C1: A capacitor connected between CAPH and CAPL

C2: A capacitor connected between VL1 and GND

C3: A capacitor connected between VL2 and GND

C4: A capacitor connected between VL4 and GND

C1 = C2 = C3 = C4 = 0.47 μF ±30%

Note 2.

This is the time required to wait from when the reference voltage is specified using the VLCD register (or when the internal

voltage boosting method is selected (by setting the MDSET[1:0] bits in the LCDM0 register to 01b) if the default value reference

voltage is used) until voltage boosting starts (VLCON = 1).

Note 3.

This is the wait time from when voltage boosting is started (VLCON = 1) until display is enabled (LCDON = 1).

[1/4 Bias Method]

Note 1.

This is a capacitor that is connected between voltage pins used to drive the LCD.

C1: A capacitor connected between CAPH and CAPL

C2: A capacitor connected between VL1 and GND

C3: A capacitor connected between VL2 and GND

C4: A capacitor connected between VL3 and GND

C5: A capacitor connected between VL4 and GND

C1 = C2 = C3 = C4 = C5 = 0.47 μF ± 30%

Note 2.

This is the time required to wait from when the reference voltage is specified by using the VLCD register (or when the internal

voltage boosting method is selected (by setting the MDSET1 and MDSET0 bits in the LCDM0 register to 01b) if the default

value reference voltage is used) until voltage boosting starts (VLCON = 1).

Note 3.

This is the wait time from when voltage boosting is started (VLCON = 1) until display is enabled (LCDON = 1).

Note 4.

VL4 must be 5.5 V or lower.

Table 2.71

Internal voltage boosting method LCD characteristics

Conditions: VCC = 1.8 V to 5.5 V

Parameter

Symbol Conditions

Min

Typ

Max

Unit

Test

conditions

LCD output voltage

variation range

VL1

C1 to C5*1 = 0.47 μF

VLCD = 04h

0.90

1.0

1.08

VLCD = 05h

0.95

1.05

1.13

VLCD = 06h

1.00

1.10

1.18

VLCD = 07h

1.05

1.15

1.23

VLCD = 08h

1.10

1.20

1.28

VLCD = 09h

1.15

1.25

1.33

VLCD = 0Ah

1.20

1.30

1.38

VLCD = 0Bh

1.25

1.35

1.43

VLCD = 0Ch

1.30

1.40

1.48

Doubler output voltage

VL2

C1 to C5*1 = 0.47 μF2VL1 - 0.08

2VL1

V-

Tripler output voltage

VL3

C1 to C5*1 = 0.47 μF3VL1 - 0.12

3VL1

V-

Quadruply output

voltage

VL4*4

C1 to C5*1 = 0.47 μF4VL1 - 0.16

4VL1

V-

Reference voltage

setup time*2

tVL1S

--ms

Figure 2.92

LCD output voltage

variation range*3

tVLWT

C1 to C5*1 = 0.47 μF

500

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