PCF2103 查看數據表（PDF） - Philips Electronics
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PCF2103 Datasheet PDF : 56 Pages
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Table 7 Instruction set with parallel bus commands; note 1
INSTRUCTION RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
DESCRIPTION
REQUIRED
CLOCK
CYCLES
H = 0 or 1
NOP
0 0 0 0 0 0 0 0 0 0 no operation
3
Function set
0 0 0 0 1 DL 0 M 0 H sets interface Data Length (DL) and number of
3
display lines (M); extended instruction set control
(H)
Read busy flag 0 1 BF
and address
counter
AC
reads the Busy Flag (BF) indicating internal
0
operating is being performed and reads address
counter contents
Read data
11
read data
reads data from CGRAM or DDRAM
3
Write data
10
write data
writes data from CGRAM or DDRAM
3
H=0
Clear display
0 0 0 0 0 0 0 0 0 1 clears entire display and sets DDRAM address 0
165
in address counter
Return home
0 0 0 0 0 0 0 0 1 0 sets DDRAM address 0 in address counter; also
3
returns shifted display to original position; DDRAM
contents remain unchanged
Entry mode set 0 0 0 0 0 0 0 1 I/D S sets cursor move direction and specifies shift of
3
display; these operations are performed during
data write and read
Display control 0 0 0 0 0 0 1 D C B sets entire display on/off (D), cursor on/off (C) and
3
blink of cursor position character (B); D = 0
(display off) puts chip into power-down mode
Cursor/display 0 0 0 0 0 1 S/C R/L 0 0 moves cursor and shifts display without changing
3
shift
DDRAM contents
Set CGRAM
address
0001
ACG
sets CGRAM address; bit 6 is to be set by the
3
command ‘set DDRAM address’; look at the
description of the commands
Set DDRAM
001
ADD
sets DDRAM address
3
address
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