User manual

U
U
n
n
i
i
v
v
i
i
s
s
i
i
o
o
n
n
T
T
e
e
c
c
h
h
n
n
o
o
l
l
o
o
g
g
y
y
I
I
n
n
c
c
.
.
Doc. No: SAS1-D038-A
3
1.5 Pin Definition
Pin Number Symbol Type Function
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
27 VCI P
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
f
f
o
o
r
r
O
O
p
p
e
e
r
r
a
a
t
t
i
i
o
o
n
n
This is a voltage supply pin. It must
b
e connected to
external source & always
b
e equal to or higher than VDD
& VDDIO.
26 VDD P
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
f
f
o
o
r
r
C
C
o
o
r
r
e
e
L
L
o
o
g
g
i
i
c
c
C
C
i
i
r
r
c
c
u
u
i
i
t
t
This is a voltage supply pin which is regulated internall
y
from VCI. A capacitor should be connected between
this pin & VSS under all circumstances.
4 VDDIO P
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
f
f
o
o
r
r
I
I
/
/
O
O
P
P
i
i
n
n
This pin is a power supply pin of I/O buffer. It shoul
d
be connected to VCI or external source. All I/O signal
should have VIH reference to VDDIO. When I/O signal
pins (BS0~BS1, D0~D7, control signals…) pull high,
they should be connected to VDDIO.
28 VSS P
G
G
r
r
o
o
u
u
n
n
d
d
o
o
f
f
O
O
E
E
L
L
S
S
y
y
s
s
t
t
e
e
m
m
This is a ground pin. It also acts as a reference for the
logic pins, the OEL driving voltages, and the analog
circuits. It must be connected to external ground.
2 VCC P
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
f
f
o
o
r
r
O
O
E
E
L
L
P
P
a
a
n
n
e
e
l
l
This is the most positive voltage supply pin of the chip.
It must be connected to external source.
D
D
r
r
i
i
v
v
e
e
r
r
22 IREF I
C
C
u
u
r
r
r
r
e
e
n
n
t
t
R
R
e
e
f
f
e
e
r
r
e
e
n
n
c
c
e
e
f
f
o
o
r
r
B
B
r
r
i
i
g
g
h
h
t
t
n
n
e
e
s
s
s
s
A
A
d
d
j
j
u
u
s
s
t
t
m
m
e
e
n
n
t
t
This pin is segment current reference pin. A resisto
r
should be connected between this pin and VSS. Set the
current lower than 12.5uA.
3 VCOMH P
V
V
o
o
l
l
t
t
a
a
g
g
e
e
O
O
u
u
t
t
p
p
u
u
t
t
H
H
i
i
g
g
h
h
L
L
e
e
v
v
e
e
l
l
f
f
o
o
r
r
C
C
O
O
M
M
S
S
i
i
g
g
n
n
a
a
l
l
This pin is the input pin for the voltage output high level
for COM signals. A tantalum capacitor should be
connected between this pin and VSS.
5 VSL P
V
V
o
o
l
l
t
t
a
a
g
g
e
e
O
O
u
u
t
t
p
p
u
u
t
t
L
L
o
o
w
w
L
L
e
e
v
v
e
e
l
l
f
f
o
o
r
r
S
S
E
E
G
G
S
S
i
i
g
g
n
n
a
a
l
l
This is segment voltage reference pin.
When external VSL is not used, this pin should be lef
t
open.
When external VSL is used, this pin should connect wit
h
resistor and diode to ground.
E
E
x
x
t
t
e
e
r
r
n
n
a
a
l
l
I
I
C
C
C
C
o
o
n
n
t
t
r
r
o
o
l
l
24
23
GPIO0
GPIO1
I/O
G
G
e
e
n
n
e
e
r
r
a
a
l
l
P
P
u
u
r
r
p
p
o
o
s
s
e
e
I
I
n
n
p
p
u
u
t
t
/
/
O
O
u
u
t
t
p
p
u
u
t
t
These pins could be left open individually or have signal
inputted/outputted. They are able to use as the external
DC/DC converter circuit enabled/disabled control or othe
r
applications.