SSD1870 View Datasheet(PDF) - Solomon Systech
Part Name
Description
Manufacturer
SSD1870 Datasheet PDF : 35 Pages
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When FR = L
F10
1
0
1
0
F20
1
1
0
0
line r
V1
V1
-V1
V1
Line (r + 1)
-V1
V1
V1
V1
Line (r + 2)
V1
-V1
V1
V1
Line (r + 3)
V1
V1
V1
-V1
Table 9 - Relationship between common voltage and F10 & F20 when FR = L
When FR = H
F10
1
0
1
0
F20
1
1
0
0
line r
-V1
-V1
V1
-V1
Line (r + 1)
V1
-V1
-V1
-V1
Line (r + 2)
-V1
V1
-V1
-V1
Line (r + 3)
-V1
-V1
-V1
V1
Table 10 - Relationship between common voltage and F10 & F20 when FR = H
In each field, the order of F10 & F20 is shown in Table 11. In Table 11, the first place in the bracket
represents F10 and the second place in the bracket represents F20, i.e., (F10, F20). The changeover interval
for each field is determined by the setting of F1S & F2S and Table 6 in the pin descriptions section.
Field# 1
Field# 2
Field# 3
Field# 4
(1,1) ! (0,1) ! (1,0) ! (0,0) ! (1,1) ! (0,1) ! (1,0) ! (0,0)
(0,1) ! (1,0) ! (0,0) ! (1,1) ! (0,1) ! (1,0) ! (0,0) ! (1,1)
(1,0) ! (0,0) ! (1,1) ! (0,1) ! (1,0) ! (0,0) ! (1,1) ! (0,1)
(0,0) ! (1,1) ! (0,1) ! (1,0) ! (0,0) ! (1,1) ! (0,1) ! (1,0)
Table 11 - The order of F10 & F20 in each field in 1P operation mode.
Segment Output Voltage
The following two tables show the relationships between the segment output voltages, the setting of FR, F10 &
F20 and the display data when DOFF# is set at “H” level. All segment voltages are tied to the VC level when
DOFF# is set at “L” level.
In these two tables, “0” in display line represents “not lit” while “1” in display line represents “lit”. Table 7
shows their relationship when FR is set at “L” level and Table 8 shows that when FR is set at “H” level.
When FR = L
Line#
Display Data (0 = not lit; 1 = lit)
R
1111111100000000
r+1
1111000011110000
r+2
1100110011001100
r+3
1010101010101010
F10 F20
Segment Voltage Level
1
1 -V2 VC VC V2 -V3 -V2 -V2 VC VC V2 V2 V3 -V2 VC VC V2
0
1 -V2 VC -V3 -V2 VC V2 -V2 VC VC V2 -V2 VC V2 V3 VC V2
1
0 -V2 VC VC V2 VC V2 V2 V3 -V3 -V2 -V2 VC -V2 VC VC V2
0
0 -V2 -V3 VC -V2 VC -V2 V2 VC VC -V2 V2 VC V2 VC V3 V2
Table 12 - Relationship between the segment voltages and the display data when FR = L
When FR = H
SSD1870 Rev 2.0
05/2002
17
SOLOMON
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