MC144032B6WCB-SPTLY Midas, MC144032B6WCB-SPTLY Datasheet - Page 24

• Manufacturer Part Number: MC144032B6WCB-SPTLY
• Description: LCD, 144X32, STN, Y/GN B/L, CHINESE; Backlighting Colour: Yellow Green; LCD Display Type: STN; Pixel Size (H x W): 0....
• Manufacturer: Midas

7. Display Control Instruction
Instructions
ST7920 offers basic instruction set and extended instruction set:
FUNCTION
READ RAM
CONTROL
FLAG(BF)
CURSOR
DISPLAY
DISPLAY
& ADDR.
ON/OFF
CGRAM
DDRAM
CLEAR
ENTRY
HOME
MODE
ADDR.
ADDR.
WRITE
READ
BUSY
RAM
SET
SET
SET
Ins
RS RW
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
1
0
1
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
BF
D7
D7
0
0
0
0
0
0
0
1
AC6
AC6 AC5 AC4 AC3 AC2 AC1 AC0
D6
D6
0
0
0
0
0
0
1
0
AC5 AC4 AC3 AC2 AC1 AC0
AC5 AC4 AC3 AC2 AC1 AC0
D5
D5
0
0
0
0
0
1
code
DL
D4
D4
0
0
0
0
1
S/C R/L
D3
D3
0
0
0
1
X
RE
D2
D2
D
0
0
1
0
I/D
D1
D1
C
0
1
X
X
D0
D0 Read data from internal RAM
1
X
S
B
X
X
Description
Fill DDRAM with “20H”, and s et DDRAM
address counter (AC) to “00H”
Set DDRAM address c ounter (AC) to
“00H”, and put c ursor to origin; to content
of DDRAM are not changed.
Set c ursor position and shift when doing
write or read operati on.
D=1：display ON
C=1：cursor ON
B=1：blink ON
Cursor position and display shift c ontrol；
the c ontent of DDRAM are not c hanged.
DL=1 8-BIT interfac e
DL=0 4-BIT interfac e
RE=1： extended instruction
RE=0： basic instru ction
Set CGRAM address to address c ounter
(AC)
Make sure that in ext ended instru ction
SR=0 (scroll or RAM address select)
Set DDRAM address to address
counter(AC)
AC6 is fi xed to 0
Read bus y flag (BF) for compl etion of
internal operation, also
Read out the val ue of address
counter(AC)
Write data to i nternal RAM
(DDRAM/CGRAM/IRAM/GDRAM)
(DDRAM/CGRAM/IRAM/GDRAM)
Exec time
(540KHZ)
1.6 ms
72 us
72 us
72 us
72 us
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72 us
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72 us
0 us