UPD16732AN-XXX 查看數據表（PDF） - NEC => Renesas Technology

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UPD16732AN-XXX

384-OUTPUT TFT-LCD SOURCE DRIVER (COMPATIBLE WITH 64-GRAY SCALES)

NEC => Renesas Technology 

µ PD16732A, 16732B

Pin Symbol

Bcont

Pin Name

Bias control

V0 to V9

γ -corrected power

supplies

VDD1

VDD2

VSS1

VSS2

Logic power supply

Driver power supply

Logic ground

Driver ground

Description

(2/2)

This pin can be used to finely control the bias current inside the output amplifier.

In cases when fine-control is necessary, connect this pin to the stabilized ground

potential (VSS2) via an external resistor of 10 to 100kΩ (per IC).

When this fine-control function is not required, leave this pin open.

Refer to 9. CURRENT CONSUMPTION REDUCTION FUNCTION

Input the γ -corrected power supplies from outside by using operational amplifier.

Make sure to maintain the following relationships. During the gray scale voltage

output, be sure to keep the gray scale level power supply at a constant level.

VDD2 – 0.1 V> V0 > V1 > V2 > V3 > V4 > V5 > V6 > V7 > V8 > V9 > VSS2 + 0.1 V

2.3 V to 3.6 V

8.5 V ± 0.5 V

Grounding

Grounding

Cautions 1. The power start sequence must be VDD1, logic input, and VDD2 & V0 to V9 in that order.

Reverse this sequence to shut down. (Simultaneous power application to VDD2 and V0 to V9 is

possible.)

2. To stabilize the supply voltage, please be sure to insert a 0.1 µ F bypass capacitor between

VDD1-VSS1 and VDD2-VSS2. Furthermore, for increased precision of the D/A converter, insertion of a

bypass capacitor of about 0.01 µ F is also advised between the γ -corrected power supply

terminals (V0, V1, V2, ···, V9) and VSS2.

Data Sheet S13972EJ3V0DS00

5

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