14 lCD DRiVeR
S1C63003/004/008/016 TeChniCal Manual
Seiko epson Corporation
14-15
(Rev. 1.1)
Display Memory
14.4
The display memory is located to addresses F000H–F07FH (F000H–F03FH in the S1C63003) in the data memory
area and each data bit can be allocated to a segment terminal by mask option.
4.1 Display memory
Table 14.
Model
Memory size
SEG terminals
S1C63016
448 bits
56 terminals (SEG0–SEG55)
S1C63008
400 bits
50 terminals (SEG0–SEG29, SEG36–SEG55)
S1C63004
288 bits
36 terminals (SEG0–SEG19, SEG40–SEG55)
S1C63003
110 bits
22 terminals (SEG0–SEG9, SEG44–SEG55)
When a bit in the display memory is set to "1," the corresponding LCD segment goes on, and when it is set to "0,"
the segment goes off.
At initial reset, the data memory contents become undefined hence, there is need to initialize by software.
Address
Base
Low
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
F000H
F010H
F020H
F030H
F040H
F050H
F060H
F070H
S1C63016: 448 bits
S1C63008: 400 bits
S1C63004: 288 bits
R/W
(a) S1C63004/008/016
Address
Base
Low
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
F000H
F010H
F020H
F030H
S1C63003: 110 bits
R/W
(b) S1C63003
4.1 Display memory map
Figure 14.
The S1C63004/008/016 includes a 128-word memory (addresses F000H–F07FH) and the S1C63003 includes a 64-
word memory (addresses F000H–F03FH). Any address can be allocated for a segment output. Note, however, that
the number of bits usable as display memory are limited to the size shown above. The memory bits that are not used
for LCD display can be used as general-purpose registers.
i/O Memory of lCD Driver
14.5
Table 14.5.1 shows the I/O addresses and the control bits for the LCD driver.
5.1 Control bits of LCD driver
Table 14.
Address
Register name R/W Default
Setting/data
Function
FF12H D3
FlCKS1
R/W
0
3 –
1 21.3
Frame frequency (Hz) selection
D2
FlCKS0
R/W
0
2 16.0
0 32.0
D1 VCCKS1
R/W
0
3 –
1 2048
V
C
boost frequency (Hz) selection
D0 VCCKS0
R/W
0
2 –
0 Off
FF50H D3 0 (
*
3)
R
– (
*
2)
–
Unused
D2 0 (
*
3)
R
– (
*
2)
–
Unused
D1
DSPC1
R/W
1
3 All on
1 All on
LCD display mode selection
D0
DSPC0
R/W
0
2 All off
0 Normal
FF51H D3
STCD
R/W
0
1 Static
0 Dynamic
LCD drive mode switch
D2
lDuTY2
R/W
0
7 1/8 (
*
6)
4 1/7 (
*
6)
1 1/4
LCD drive duty selection
D1
lDuTY1
R/W
0
6 1/7 (
*
6)
3 1/6 (
*
6)
0 1/3
D0
lDuTY0
R/W
0
5 1/8 (
*
6)
2 1/5