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參數(shù)資料
| 型號(hào)： | PCF88331 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | STN RGB - 132 X 132 X 3 driver |
| 中文描述： | 超扭曲的RGB - 132 × 132 × 3驅(qū)動(dòng)程序 |
| 文件頁(yè)數(shù)： | 54/112頁(yè) |
| 文件大?。?/td> | 469K |
| 代理商： | PCF88331 |
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2003 Feb 14
54
Philips Semiconductors
Objective specification
STN RGB - 132
×
132
×
3 driver
PCF8833
Temperature compensation is implemented by adding an
offset to the V
OP
value. Previously, in Section 6.2.31, V
OP
was calculated by adding V
PR
, VCON and MMVOPCAL
settings together. Now, an additional offset V
T
is added.
The final result for V
LCD
calculation is a 9-bit positive
number. Care must be taken by the user to ensure that the
ranges of V
PR
, MMVOPCAL, VCON and temperature
compensation do not cause clipping, and hence undesired
results (see Fig.24). The adders will not permit overflow or
underflow and will clamp results to either end of the range
(V
OP
= 0 or 445). Also, temperatures outside the range
40 to +79
°
C will be clamped to the last valid offset.
Thetemperaturereadoutgeneratesan8-bitresultTD[7:0].
This temperature readout number is used for temperature
compensation.
The resolution of the readout is
(
40 to +80
°
C)/128 = 0.9375
°
C/LSB; where 0
represents
40
°
C and 127 represents +79
°
C;
see Section 6.2.44.
Thetemperaturereadoutfunctioncanalsobeusedtoread
back the temperature value via the interface;
see equation (12).
The offset value may be calculated from Table 67. The
effect on V
LCD
can be calculated by multiplying the offset
value with the value of b.
For example T =
8
°
C: TD = 34 and MB = 0.5:
V
LCD(OS)
= 40 mV
×
(64
34)
×
0.5 = 600 mV.
A complete overview of the programming range of V
LCD
can be found in Section 15.1.
handbook, full pagewidth
MGU939
8
8
TD
SLA
SLB
SLC
SLD
TEMPERATURE
READOUT
VPR[8:0]
VOP[8:0]
9
OFFSET
VT
VLCD
a
b
MMVOPCAL[5:0]
VCON[5:0]
T (
°
C)
40
0
zero
offset
+
80
Fig.30 Segmented temperature compensation.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCF88332DA | STN RGB - 132 X 132 X 3 driver |
| PCF8833U | STN RGB - 132 X 132 X 3 driver |
| PCF8881 | 132 x 132 RGB single chip TFT driver with DC-to-DC converter |
| PCI-ADC | MULTIFUNKTIONSKARTE 44 KANAL PCI BUS |
| PCI-DIO | KARTE E/A 32 KANAL PCI BUS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF88332DA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
| PCF8833U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
| PCF8833U/2DA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
| PCF8881 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:132 x 132 RGB single chip TFT driver with DC-to-DC converter |
| PCF8881U/2DA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:132 x 132 RGB single chip TFT driver with DC-to-DC converter |
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