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參數(shù)資料
| 型號： | PCF8820U |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | 67 x 101 Grey-scale/ECB colour dot matrix LCD driver |
| 中文描述： | LIQUID CRYSTAL DISPLAY DRIVER, UUC235 |
| 封裝： | BUMP, DIE-235 |
| 文件頁數(shù)： | 48/60頁 |
| 文件大?。?/td> | 316K |
| 代理商： | PCF8820U |
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2000 Dec 07
48
Philips Semiconductors
Product specification
67
×
101 Grey-scale/ECB colour dot matrix
LCD driver
PCF8820
13.5
Typical system configuration
The PCF8820 is a low power LCD driver designed to
interface with microcontrollers and a wide variety of LCDs.
The host microcontroller and the PCF8820 are both
connected to the I
2
C-bus. The SDA and SCL lines must be
connected to the positive power supply via pull-up
resistors.
The internal oscillator requires no external components.
The appropriate intermediate biasing voltage for the
multiplexed LCD waveforms are generated on-chip.
The only other connections required to complete the
system are the power supplies (V
DD1
, V
DD2
and V
DD3
) and
ground supplies (V
SS1
and V
SS2
), LCD supply(V
LCDIN
)and
system reset (RES), including suitable capacitors for
decoupling.
13.6
External supply of V
LCDIN
If an external LCD supply voltage is used, it must be
connected to pad V
LCDIN
. If pads V
LCDOUT
, V
LCDSENSE
and
V
LCDIN
are connected together, the impedance of
pad V
LCDOUT
should be set high-impedance by setting the
status of bits shown in Table 8. To obtain the highest
resistance and the lowest current into pad V
LCDSENSE
, it is
recommended to set the V
LCD
programming range to
HIGH (bit PRS = 1) and the V
LCD
control register value to
127 (maximum value) with bits V
OP6
to V
OP0
.
It should be noted that V
LCDIN
is not allowed to be lower
than V
DD1
.
An external V
LCD
must be applied after applying V
DD1
, and
it must be turned off before (or when) V
DD1
is turned off
(see Fig.25). It is recommended that the external V
LCD
is
appliedafterleavingthereset state.Theexternal V
LCD
can
stay turned on in Power-down mode.
handbook, full pagewidth
MGT138
HOST
MICROCONTROLLER
LCD PANEL
S
V
V
V
V
V
V
V
V
O
VLCD
VP1
VP2
≤
5.5 V
S
SDA
SCL
S
S
PCF8820
S
Rpu
Rpu
R
RES
101 column drivers
67 row drivers
I
2
C-bus
Fig.31 Typical system configuration.
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相關(guān)代理商/技術(shù)參數(shù) |
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| PCF8831 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 160 output row driver |
| PCF8831U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 160 output row driver |
| PCF8832 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:STN RGB - 384 output column driver |
| PCF8833 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
| PCF88331 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
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