Table of Contents
Advertisement
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver)
4.7.7 I/O memory of LCD driver
Table 4.7.7.1 shows the I/O addresses and the control bits for the LCD driver. Figure 4.7.7.1 shows the
display memory map.
Register
Address
D3
D2
LDUTY1 LDUTY0 Dummy LPWR
FF60H
R/W
EXLCDC ALOFF
ALON
FF61H
R/W
LC3
LC2
FF62H
R/W
*1 Initial value at initial reset
*2 Not set in the circuit
*3 Constantly "0" when being read
(a) When 40
17 is selected
COM0
COM7
–
D3
D2
D1
F000H
COM3
COM2
COM1
COM0
F001H
COM7
COM6
COM5
COM4
F002H
COM3
COM2
COM1
COM0
F003H
COM7
COM6
COM5
COM4
F004H
COM3
COM2
COM1
COM0
:
F04DH
COM7
COM6
COM5
COM4
F04EH
COM3
COM2
COM1
COM0
F04FH
COM7
COM6
COM5
COM4
F060H
:
F0FFH
(b) When 48
8 is selected
COM0
COM7
–
D3
D2
D1
F000H
COM3
COM2
COM1
COM0
F001H
COM7
COM6
COM5
COM4
F002H
COM3
COM2
COM1
COM0
F003H
COM7
COM6
COM5
COM4
F004H
COM3
COM2
COM1
COM0
:
F05DH
COM7
COM6
COM5
COM4
F05EH
COM3
COM2
COM1
COM0
F05FH
COM7
COM6
COM5
COM4
F060H
:
F0FFH
54
Table 4.7.7.1 LCD driver control bits
D1
D0
Name Init
1
LDUTY1
0
LDUTY0
0
Dummy
0
LPWR
0
EXLCDC
0
LPAGE
ALOFF
1
ALON
0
LPAGE
0
LC3
–
2
LC1
LC0
LC2
–
2
2
LC1
–
LC0
–
2
COM8
D0
D3
SEG0
F100H
COM11
COM10
SEG0
F101H
COM15
COM14
SEG1
F102H
COM11
COM10
SEG1
F103H
COM15
COM14
SEG2
F104H
COM11
COM10
:
SEG38
F14DH
COM15
COM14
SEG39
F14EH
COM11
COM10
SEG39
F14FH
COM15
COM14
F160H
Not-
:
implemented
F1FFH
COM0
D0
D3
SEG0
F100H
COM3
COM2
SEG0
F101H
COM7
COM6
SEG1
F102H
COM3
COM2
SEG1
F103H
COM7
COM6
SEG2
F104H
COM3
COM2
:
SEG46
F15DH
COM7
COM6
SEG47
F15EH
COM3
COM2
SEG47
F15FH
COM7
COM6
F160H
Not-
:
implemented
F1FFH
Fig. 4.7.7.1 Display memory map
1
0
LCD drive duty
switch
General-purpose register
LCD power On/Off
On
Off
Enable
Disable
Expanded LCD driver signal control
All Off
Normal
LCD all Off control
All On
Normal
LCD all On control
F100-F15F
F000-F05F
Display memory area selection (when 1/8 duty is selected)
General-purpose register when 1/16, 1/17 duty is selected
LCD contrast adjustment
[LC3–0]
Contrast
COM15
–
D2
D1
D0
COM09
COM8
SEG0
COM13
COM12
SEG0
COM09
COM8
SEG1
COM13
COM12
SEG1
COM9
COM8
SEG2
COM13
COM12
SEG38
COM9
COM8
SEG39
COM13
COM12
SEG39
Not-
implemented
COM7
–
D2
D1
D0
COM1
COM0
SEG0
COM5
COM4
SEG0
COM1
COM0
SEG1
COM5
COM4
SEG1
COM1
COM0
SEG2
COM5
COM4
SEG46
COM1
COM0
SEG47
COM5
COM4
SEG47
Not-
implemented
EPSON
Comment
[LDUTY1, 0]
0
Duty
1/17
0
–
15
Light
–
Dark
COM16
D3
D2
D1
D0
F200H
0
0
0
COM16
F201H
F202H
0
0
0
COM16
F203H
:
F24CH
0
0
0
COM16
F24DH
F24EH
0
0
0
COM16
F24FH
Non-implementation area
0
Unused area
Reading:
Always "0"
Writing:
No Operation
S1C63558 TECHNICAL MANUAL
1
2, 3
1/16
1/8
SEG0
SEG1
SEG38
SEG39
Read/write disabled
Advertisement
Table of Contents
