hd66421 Renesas Electronics Corporation., hd66421 Datasheet - Page 7

• Manufacturer Part Number: hd66421
• Description: Ram-provided 160 Channel 4-level Grey Scale Driver For Dot Matrix Graphics Lcd
• Manufacturer: Renesas Electronics Corporation.

Register List
CS RS
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Preliminary
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
-
Index Reg. Bits
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
-
-
0 0 0 0 R0
0 0 0 1 R1
0 0 1 0 R2
0 0 1 1 R3
0 1 0 0 R4
0 1 0 1 R5
1 0 1 0 R10 Blink register 3
1 0 1 1 R11 Partial display block register
1 1 0 0 R12 Gray scale palette 1 (0,0)
1 1 0 1 R13 Gray scale palette 2 (0,1)
1 1 1 0 R14 Gray scale palette 3 (1,0)
1 1 1 1 R15 Gray scale palette 4 (1,1)
0 0 0 0 R16 Contrast control register
0 0 0 1 R17
0 0 1 0 R18 Reserved
0 0 1 1 R19 Reserved
0 1 0 0 R20 Reserved
0 1 0 1 R21 Reserved
0 1 1 0 R22 Reserved
0 1 1 1 R23 Reserved
1 0 0 0 R24 Reserved
1 0 0 1 R25 Reserved
1 0 1 0 R26 Reserved
1 0 1 1 R27 Reserved
1 1 0 0 R28 Reserved
1 1 0 1 R29 Reserved
1 1 1 0 R30 Reserved
1 1 1 1 R31 Reserved
3 2 1 0
0 1 1
0 1 1
1 0 0
1 0 0
-
-
-
-
-
-
0 R6
1 R7
0 R8
1 R9
-
-
IR
Index register
Control register 1
Control register 2
X address register
Y address register
Display start line register
Blink start line register
Blink end line register
Blink register 1
Blink register 2
Display RAM access register R/W
Plane selection register
Register Name
7
R/W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RMW DISP STBY PWR AMP REV HOLT ADC
BIS1 BIS0 WLS
D7
BK0 BK1 BK2 BK3 BK4 BK5 BK6 BK7
BK8 BK9 BK10 BK11 BK12 BK13 BK14 BK15
7
YA6 YA5 YA4 YA3 YA2 YA1 YA0
D6
ST6
BSL6 BSL5 BSL4 BSL3 BSL2 BSL1 BSL0
BEL6 BEL5 BEL4 BEL3 BEL2 BEL1 BEL0
CM1 CM0
6
XA5 XA4 XA3 XA2 XA1 XA0
D5
ST5
5
Data bits
GRAY
IR4
D4
ST4
GP14 GP13 GP12 GP11 GP10
GP24 GP23 GP22 GP21 GP20
GP34 GP33 GP32 GP31 GP30
GP44 GP43 GP42 GP41 GP40
CC4
CLE
4
IR3
DTY1 DTY0 INC
D3
ST3
BK16 BK17 BK18 BK19
PB3
CC3
3
MON DSEL PSEL
IR2
D2
ST2
PB2
CC2
2
HD66421
IR1
D1
ST1
PB1
CC1
1
IR0
BLK
D0
ST0
PB0
CC0
0