參數(shù)資料
型號(hào)： PCF2104NU
廠商： NXP Semiconductors N.V.
英文描述： LCD controller/driver
中文描述： LCD控制器/驅(qū)動(dòng)器
文件頁(yè)數(shù)： 36/56頁(yè)
文件大小： 366K
代理商： PCF2104NU
1997 Dec 16
36
Philips Semiconductors
Product specification
LCD controller/driver
PCF2104x
17.1
8-bit operation, 2
×
12 display using internal
reset
Table 7 shows an example of a 1-line display in 8-bit
operation. The PCF2104x functions must be set by the
function set instruction prior to display. Since the display
data RAM can store data for 80 characters, the RAM can
be used for advertising displays when combined with
display shift operation. Since the display shift operation
changes the display position only and DDRAM contents
remain unchanged. Display data entered first can be
displayed when the ‘Return home’ instruction is
performed.
17.2
4-bit operation, 2
×
12 display using internal
reset
The program must set functions prior to 4-bit operation.
Table 6 shows an example. When power is turned on, 8-bit
operation is automatically selected and the PCF2104x
attempts to perform the first write as an 8-bit operation.
Since nothing is connected to DB0 to DB3, a rewrite is
then required. However, since one operation is completed
in two accesses of 4-bit operation, a rewrite is required to
set the functions (see Table 6 step 3).
Thus, DB4 to DB7 of the function set are written twice.
17.3
8-bit operation, 2
×
24 display
For a 2-line display, the cursor automatically moves from
the first to the second line after the 40th digit of the first line
has been written. Thus, if there are only 8 characters in the
first line, the DDRAM address must be set after the eighth
character is completed (see Table 8). It should be noted
that both lines of the display are always shifted together,
data does not shift from one line to the other.
17.4
I
2
C operation, 2
×
12 display
A control byte is required with most instructions
(see Table 9).
17.5
Initializing by instruction
If the power supply conditions for correctly operating the
internal reset circuit are not met, the PCF2104x must be
initialized by instruction. Tables 10 and 11 show how this
may be performed for 8-bit and 4-bit operation.
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參數(shù)描述
PCF2104NU/2 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:LCD controller/driver
PCF2104NU/7 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:LCD controller/driver
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PCF2105 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:LCD controller/driver
PCF2105MU 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:LCD controller/driver
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