NJU6680 데이터 시트보기 (PDF) - Japan Radio Corporation
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NJU6680 Datasheet PDF : 56 Pages
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NJU6680
(2) Instructions
The NJU6680 distinguishes the data on the data bus D0 to D7 as an instruction by combination of RS and
R/W signals. The decoding of the instruction and exection performes with only high speed internal timing
without relation to the external clock.
In case of the serial interface, the data input as MSB(D7) first serially.
Table.3-1, 3-2 shows the instruction codes of the NJU6680
Instruction
(a) Status read
(b) Display data write
(c) Column address LSB set
Column address MSB set
(d) Internal resistor ratio set
(e) Power control set
(f)
Initial display line set
(Dual instructions)
(g)
Initial COM0 line set
(Dual instructions)
(h)
Partial display duty set
(Dual instructions)
(i)
N-line inversion set
(Dual instructions)
(j) LCD bias set
(k) Boost level set
(l)
Contrast level set
(Dual instructions)
(m) ADC select
(n) Entire display ON/OFF
(o) Reverse display ON/OFF
(p) Power save mode ON
(q) Internal oscillator ON
(r) Display ON/OFF
(s) Page address set
(t) COM scan direction select
(u) Power save mode OFF
(v) Reset
(w) N-line inversion OFF
(x)
Display data length set
(Dual instructions)
(y) FRC & PWM set
Table 3-1. Instruction Codes
Code
RS R/W D7 D6 D5 D4 D3 D2
0 1 Busy ON RES 0 0 0
1
0 D7 D6 D5 D4 D3 D2
0 0 0 0 0 0 C3 C2
0 0 0 0 0 1 0 C6
0 0 0 0 1 0 0 R2
0 0 0 0 1 0 1 VC
00010000
0
0
* L6 L5 L4 L3 L2
00010001
0
0
* C6 C5 C4 C3 C2
00010010
0
0 D7 D6 D5 D4 D3 D2
00010011
0 0 * * * N4 N3 N2
0 0 0 1 0 1 0 B2
00011001
00100000
0
0
*
* C5 C4 C3 C2
00101000
00101001
00101001
00101010
00101010
00101011
0 0 1 0 1 1 P3 P2
0 0 1 1 0 0 S0 *
00111000
00111000
00111001
00111010
0
0 D7 D6 D5 D4 D3 D2
0 0 1 0 0 1 0 FRC
D1 D0
Descriptions
00
-
D1 D0
-
C1 C0 Lower 4-bit
C5 C4 Upper 3-bit
R1 R0
-
VR VF
-
* * Set initial display line mode
L1 L0 Specify line address
* * Set initial COM0 line mode
C1 C0 Specify line address
* * Set partial display mode
D1 D0 Specify duty cycle ratio
* * Set N-line inversion mode
N1 N0 Specify the number of N-line
B1 B0
-
B1 B0
-
0 1 Set contrast level mode
C1 C0 Specify contrast level
0 S0 Select segment direction
0 E0 E0=0: OFF, E0=1: ON
1 R0 R0=0: OFF, R0=1: ON
0 1 Power save mode
11
-
1 D0 D0=0: OFF, D0=1: ON
P1 P0
-
* * Select common direction
01
-
10
-
00
-
0 0 Set display data length
D1 D0 Specify the data length
PWM1 PWM0
-
(*:Don’t Care)
Ver.2003-04-08
- 17 -
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