UPD16732AN-XXX Ver la hoja de datos (PDF) - NEC => Renesas Technology
Número de pieza
componentes Descripción
Fabricante
UPD16732AN-XXX
NEC => Renesas Technology
UPD16732AN-XXX Datasheet PDF : 24 Pages
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µ PD16732A, 16732B
5. RELATIONSHIP BETWEEN INPUT DATA AND OUTPUT VOLTAGE VALUE
This product incorporates a 6-bit D/A converter whose odd output pins and even output pins output respectively
gray scale voltages of differing polarity with respect to the LCD’s counter electrode (common electrode) voltage. The
D/A converter consists of ladder resistors and switches.
The ladder resistors (r0 to r62) are designed so that the ratio of LCD panel γ -compensated voltages to V0’ to V63’
and V0’’ to V63’’ is almost equivalent. For the 2 sets of five γ-compensated power supplies, V0 to V4 and V5 to V9,
respectively, input gray scale voltages of the same polarity with respect to the common voltage. When fine-gray scale
voltage precision is not necessary, there is no need to connect a voltage follower circuit to the γ -compensated power
supplies V1 to V3 and V6 to V8.
Figure 5−1 shows the relationship between the driving voltages such as liquid-crystal driving voltages VDD2 and
VSS2, common electrode potential VCOM, and γ -corrected voltages V0 to V9 and the input data. Be sure to maintain
the voltage relationships of VDD2 – 0.1 V> V0 > V1 > V2 > V3 > V4 > V5 > V6 > V7 > V8 > V9 > VSS2 + 0.1 V.
Figures 5−2 and 5−3 show the relationship between the input data and the output data. This driver IC is designed
for only single-sided mounting. Therefore, please do not use it for γ -corrected power supply level inversion in
double-sided mounting.
0.1 V VDD2
V0
V1
V2
V3
V4
VCOM
V5
VV67
V8
V9
0.1 V VSS2
00
Figure 5−1. Relationship between Input Data and γ - corrected Power Supply
µ PD16732A
0.1 V VDD2
V0
µ PD16732B
16
V1
16
V2
16
V3
15
V4
Split interval
15
16
16
16
VCOM
V5
V6
V7
V8
10
20
30
3F
Input data (HEX)
V9
0.1 V VSS2
00
10
20
30
Input data (HEX)
16
16
16
15
Split interval
15
16
16
16
3F
6
Data Sheet S13972EJ3V0DS00
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