as2591 austriamicrosystems, as2591 Datasheet - Page 8

• Manufacturer Part Number: as2591
• Description: 16-digit Lcd Driver Cmos Integrated Circuit
• Manufacturer: austriamicrosystems

Preliminary
Digit Layout
Segment Allocation
Table 4: 12-digit display
Table 5: 16-digit display
The symbols in bold are always enabled and other symbols can be enabled through the serial interface. Symbols
will be displayed independently from selecting the upper bank of the 32 digit buffer to be displayed.
The AS2591 incorporates a buffer for 32 digits. Digits are entered from the most right position and shifted left by
new entries (see also Table 2: Commands).
Rev. 1.0
Symbol
Digits
Symbol Addr.
AS2525
Digits Normal
Digits Upper
Figure 6: Digit Layout
Address
AS2525
Normal
Upper 1
Upper 2
e
f
yn
g
d
15
31
a
b
c
14
30
13
29
12
28
y11
PG
y11
PG
11
23
11
27
COM1 - 4 = common backplane signals
S1_n, S2_n = segment signals
n = 0 is most right digit, n= 11 is most left digit for 12-digit displays,
and n = 15 is most left digit for 16-digit displays.
Table 3: Backplanes and segments
S1_n
S2_n
y10
y10
RD
RD
10
22
10
26
Page 8
y9
21
y9
25
9
9
-
-
COM1
SH
SH
y8
20
24
y8
8
8
a
b
BO
BO
19
31
y7
23
y7
7
7
COM2
MR
MR
18
30
y6
y6
22
6
6
g
f
Vol
Vol
y5
17
29
21
y5
5
5
COM3
LD
LD
y4
16
28
20
y4
4
4
e
c
MF
MF
y3
15
27
y3
19
3
3
MT
MT
14
26
18
COM4
y2
y2
2
2
yn
d
AS2591
May 1999
SP
SP
13
25
17
y1
y1
1
1
KL
KL
y0
12
24
y0
16
0
0