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drive mode
LCD segments
LCD backplanes
display RAM filling order
static
1:2
multiplex
1:3
multiplex
1:4
multiplex
Sn 2
a
Sn 3 f
Sn 4
g
b
BP0
Sn 1
Sn
Sn 5 e
c Sn 7
d
DP
Sn 6
Sn
a
BP0
b
Sn 1 f
g
Sn 2 e
c
Sn 3
d
DP
Sn 1
a
Sn 2 f
g
b Sn
e
c
d
DP
BP0
BP1
Sn
a
b
f
g
e
c
Sn 1
d
BP0
BP1
DP
n n1 n2 n3 n4 n5 n6 n7
bit/ 0 c b
a
f
BP 1 x x
x
x
2x x
x
x
3x x
x
x
g
e
d
DP
x
x
x
x
x
x
x
x
x
x
x
x
n n1 n2 n3
bit/ 0 a f
e
d
BP 1 b g
c
DP
BP1
2x x
x
x
3x x
x
x
n n1 n2
bit/ 0 b a
f
BP 1 DP d
e
BP2
2c g
x
3x x
x
n n1
BP2
bit/ 0 a f
BP 1 c e
BP3
2b g
3 DP d
transmitted display byte
MSB
LSB
c b a f g e d DP
MSB
LSB
a b f g e c d DP
MSB
LSB
b DP c a d g f e
MSB
LSB
a c b DP f e g d
MGL751
X = data bit unchanged.
Fig.9 Relationships between LCD layout, drive mode, display RAM filling order and display data transmitted over the I2C-bus.