- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382375 > PC2119VU (NXP Semiconductors N.V.) KPTC 23C 21#20 2#16 PIN PLUG PDF資料下載
參數(shù)資料
| 型號： | PC2119VU |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | KPTC 23C 21#20 2#16 PIN PLUG |
| 中文描述： | LCD控制器/驅(qū)動器 |
| 文件頁數(shù)： | 6/60頁 |
| 文件大?。?/td> | 260K |
| 代理商： | PC2119VU |
第1頁第2頁第3頁第4頁第5頁當(dāng)前第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁
1999 Mar 02
6
Philips Semiconductors
Product specification
LCD controllers/drivers
PCF2119x
7
FUNCTIONAL DESCRIPTION
7.1
LCD supply voltage generator
The LCD supply voltage may be generated on-chip.
The voltage generator is controlled by two internal 6-bit
registers: V
A
and V
B
. The nominal LCD operating voltage
at room temperature is given by the relationship:
7.2
Programming ranges
Programmed value: 1 to 63. Voltage: 1.902 to 6.986 V.
T
ref
= 27
°
C.
Values producing more than 6.5 V at operating
temperature are not allowed.
Operation above this
voltage may damage the device. When programming the
operating voltage the V
LCD
temperature coefficient must
be taken into account.
Values below 2.2 V are below the specified operating
range of the chip and are therefore not allowed.
Value 0 for V
A
and V
B
switches the generator off
(i.e. V
A
= 0 in character mode, V
B
= 0 in icon mode).
Usually register V
A
is programmed with the voltage for
character mode and register V
B
with the voltage for icon
mode.
V
OP(nom)
integer value of register
0.08
×
2
(
)
1.82
+
=
When V
LCD
is generated on-chip the V
LCD
pads should be
decoupled to V
SS
with a suitable capacitor. The generated
V
LCD
is independent of V
DD
and is temperature
compensated. When the generator is switched off an
external voltage may be supplied at connected pads
V
LCD1,2
. V
LCD1,2
may be higher or lower than V
DD
.
The LCD supply voltage generator ensures that, as long as
V
DD
is in the valid range (2.2 to 4 V), the required peak
voltage V
OP
= 5.2 V can be generated at any time.
7.3
LCD bias voltage generator
The intermediate bias voltages for the LCD display are
also generated on-chip. This removes the need for an
external resistive bias chain and significantly reduces the
system current consumption. The optimum value of V
LCD
depends on the multiplex rate, the LCD threshold voltage
(V
th
) and the number of bias levels. Using a 5-level bias
scheme for 1 : 18 maximum rate allows V
LCD
< 5 V for
most LCD liquids. The intermediate bias levels for the
different multiplex rates are shown in Table 2. These bias
levels are automatically set to the given values when
switching to the corresponding multiplex rate.
Table 2
Bias levels as a function of multiplex rate
Note
1.
The values in the above table are given relative to V
op
V
ss
, e.g. 3/4 means 3/4
×
(V
op
V
ss
).
7.4
Oscillator
The on-chip oscillator provides the clock signal for the display system. No external components are required and the OSC
pad must be connected to V
DD
.
MULTIPLEX
RATE
NUMBER
OF LEVELS
V
1
V
2
V
3
V
4
V
5
V
6
1 : 18
1 : 9
1 : 2
5
5
4
V
op
V
op
V
op
3/4
(1)
3/4
2/3
1/2
1/2
2/3
1/2
1/2
1/3
1/4
1/4
1/3
V
ss
V
ss
V
ss
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PC2402LRS-ANH-H | (75.35 k) |
| PC27001 | Electronic Circuit Breaker |
| PC27005 | Electronic Circuit Breaker |
| PC27007 | Electronic Circuit Breaker |
| PC27007.5-4700 | Electronic Circuit Breaker |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PC2119VU/2 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:LCD controllers/drivers |
| PC-211-E-69 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| PC212 | 制造商:Thomas Betts 功能描述:Exact Equal/ 1-5 Days |
| PC2-120-LS1 | 制造商:GRASSLIN CONTROLS INTERMATIC 功能描述:LIGHT CONTROLLER, SWITCH W/ LS1 SENSOR |
| PC2-120P | 制造商:Amphenol Corporation 功能描述:CONN RECTANGULAR SKT 120 POS 2.54MM SLDR RA TH - Bulk 制造商:Amphenol Corporation 功能描述:PCB 2 ROWS 120 CONT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。