SC204A ETC2 [List of Unclassifed Manufacturers], SC204A Datasheet - Page 9

• Manufacturer Part Number: SC204A
• Description: A dot-matrix character LCD module
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

It clears the whole display and sets display data RAM's address 0 in address counter.
c.2) Return Home
X: Do not care (0 or 1)
It sets display data RAM's address 0 in address counter and display returns to its original position. The cursor or
blink goes to the left edge of the display (to the 1st line if 2 lines are displayed). The contents of the Display Data
RAM do not change.
c.3) Entry Mode Set
During writing and reading data, it sets cursor move direction and shifts the display.
I/ D = 1: Increment, I / D = 0: Decrement.
S = 1: The display shift, S = 0: The
display does not shift
c.4) Display On/Off Control
B = 1: Blinks on, B= 0: Blinks off
c.5) Cursor or Display Shift
Without changing DD RAM's daters, it can move cursor and shift display
c.6) Function Set
c) Instruction description
c.1) Clear Display
D = 1: Display on, D = 0: Display off
C = 1: Cursor on , C = 0: Cursor off
X: Do not care (0 or 1)
DL: It sets interface data length.
DL = 1: Datas are transferred with 8-bit lengths (DB7 - 0).DL = 0: Datas are transferred with 4-bit lengths (DB7 - 4).
(It needs two times to transfer datas) N: It sets the number of the display line. N = 0: One-line display. N = 1: Two-line
display. F: It sets the character font. F = 0: 5 x 7 dots character font.
F = 1: 5 x 10 dots character font.
N
0
0
1
Akihabara Inc. www.akiba-tech.com
S= 1
S= 1
S/C
0
0
1
1
Control and display instructions will show in details as following:
R/L
0
1
0
1
F
0
1
X
I/D= 1
I/D=0
Description
Shift cursor to the left
Shift cursor to the right
Shift display to the left. Cursor follows the display shift
Shift display to the right. Cursor follows the display shift
No. of Display Lines
1
1
2
It shifts the display to the left
It shifts the display to the right
RS
RS
RS
RS
0
RS
RS
0
0
0
0
0
0
R/W D7 D6 D5
R/W D7 D6 D5
R/W D7 D6 D5
R/W D7 D6 D5
R/W D7 D6 D5
R/W D7 D6 D5
0
0
0
0
0
0
0
0
0
0
0
SC204A
0
0
0
0
0
0
0
Character Font
5X7 dots
5x 10 dots
5x7 dots
0
0
0
0
1
1
DL
D4 D3 D2
D4 D3 D2
D4 D3 D2
D4 D3 D2
D4 D3 D2
D4 D3 D2
0
0
0
0
S/C R/L X
N
0
0
0
1
D
0
1
F
0
D1 D0
D1 D0
D1 D0
I/D
D1 D0
D1 D0
D1 D0
C
X
1
0
X
X
X
1
S
B
Duty Factor
1 /8
1 /11
1 /16
Address Counter
AC = AC - 1
AC = AC + 1
AC=AC
AC=AC
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