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PDF AS2590P Data sheet ( Hoja de datos )
| Número de pieza | AS2590P | |
| Descripción | LC DISPLAY DRIVER WITH 18 DIGITS/ 6 SYMBOLS AND CLOCK/TIMER | |
| Fabricantes | austriamicrosystems AG | |
| Logotipo |  |
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Data Sheet
AS2590
LC DISPLAY DRIVER WITH 18 DIGITS,
®
Austria Mikro Systeme International
6 SYMBOLS AND CLOCK/TIMER
Key Features
u Very low operating current, typ. 30 µA @ 3V
u Low power oscillator using 32.768 kHz Xtal
u 2-wire interface compatible to AS2574B
u 18 digits by 7 segments
u 6 symbols
u 24 hour clock showing hours and minutes
u Timer automatically showing elapsed time in
minutes and seconds after each telephone
conversation
u 33 LCD segment outputs and 4 LCD backplane
outputs
u 4 times multiplex mode with a cycle time of 128 Hz
u Mode select pin for selecting clock function
Package
Available in 48 pin DIP and 52 pin PLCC.
General Description
The AS2590 is an integrated CMOS device for driving a
liquid crystal display intended for use in telephones. The
2-wire serial interface is compatible to the dialler
AS2574B.
The extreme low operating current allows the circuit to
be operational also during on-hook which is necessary
in order to the use of the clock function. In on-hook
condition the circuit can be supplied by a small leakage
current from the telephone line or from a small 3V
battery.
Whether the oscillator shall continue operating or be
stopped during on-hook is determined by the mode pin,
MS.
SPEECH CIRCUIT
KEYBOARD
VDD
DIALLER
CONTROLLER
AS2574A/B
Vss
VDD
V23 MS
V13 X1
VLCD
SDA
SCL
X2
BIAS
Vss
32.768kHz
Rev. 1
1 Dec. 1993
1 page  
Data Sheet
AS2590
Table 2 Command Summary
NO MNEMONIC
FUNCTION
1 SET LS
Turns on special symbol SB0 (loudspeaker on, blinking)
2 CLEAR LS Turns off special symbol SB0
3
SET MUTE
Turns on special symbol SB1 (microphone muted, blinking)
4 CLEAR MUTE Turns off special symbol SB1
5 SET 2ND
Turns on special symbol SB2 (2nd function on keyboard)
6
CLEAR 2ND
Turns off special symbol SB2
7
SET CLOCK
Initiates clock setting; SB5 is turned on
8 START
Blanks all digits, SB3 and SB4; accepts data, timer not started
9 START COPY Blanks all digits and SB4; turns on SB3, accepts data, timer not started (if not
already running)
10
START FIFO
Blanks all digits and SB3; turns on SB4, accepts data, timer started (if not
already running)
11 START TIMER Blanks all digits, turns off SB3 and SB4, accepts data, timer started (if not
already running)
12 BLANK ALL Blanks all digits and all special symbols (except D13, D14, D16, D17 and SB5
when clock is running)
13
TEST MODE
Turns circuit into test mode
SEGMENT
OUTPUT
S0
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
BP0
SB0
D0/F
D0/A
D1/F
D1/A
D2/A
D3/A
D3/B
D4/F
D4/A
D5/F
D5/A
D6/A
D7/A
D7/B
D8/F
D8/A
Table 3 Segment Mapping
BACKPLANE
BP1 BP2
SB1 SB4
D0/G D0/E
D0/B D0/C
D1/G D1/E
D1/B D2/G
D2/F D2/B
D3/F D2/E
D3/G D3/C
D4/G D4/E
D4/B D4/C
D5/G D5/E
D5/B D6/G
D6/F D6/B
D7/F D7/E
D7/G D7/C
D8/G D8/E
D8/B D8/C
BP3
SB2
D0/D
D1/D
D1/C
D2/E
D2/C
D2/D
D3/D
D4/D
D5/D
D5/C
D6/E
D6/C
D6/D
D7/D
D8/D
D9/D
SEGMENT
OUTPUT
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
BP0
D9/F
D9/A
D10/A
D11/A
D11/B
D12/F
D12/A
D13/F
D13/A
D14/A
D15/A
D15/B
D16/F
D16/A
D17/F
D17/A
BACKPLANE
BP1 BP2
D9/G D9/E
D9/B D10/G
D10/F D10/B
D11/F D11/E
D11/G D11/C
D12/G D12/E
D12/B D12/C
D13/G D13/E
D13/B D14/G
D14/F D14/B
D15/F D15/E
D15/G SB5
D16/G D16/E
D16/B D16/C
D17/G D17/E
D17/B D15/C
BP3
D9/C
D10/E
D10/C
D10/D
D11/D
D12/D
D13/D
D13/C
D14/E
D14/C
D14/D
D15/D
D16/D
D17/D
D17/C
SB3
Dn/m = segment m of digit n
SBn = special symbol n
Rev. 1
5 Dec. 1993
5 Page 
Data Sheet
PinConfigurations
48 Pin DIP
BP1
BP0
S0
S1
S2
S3
S4
S5
S6
S7
S8
S9
V1/3
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
Vss
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
AS2590
48 VDD
47 MS
46 XTAL2
45 XTAL1
44 VBIAS
43 SCL
42 SDA
41 VLCD
40 S20
39 S21
38 S22
37 S23
36 S24
35 S25
34 S26
33 S27
32 S28
31 S29
30 S30
29 S31
28 S32
27 V2/3
26 BP2
25 BP3
52 pin PLCC
S4 1 NC
S5 SDA
S6 VLCD
S7 S20
S8 S21
A S 2 5 9 0S9
V1/3
S10
14
S22
40 S23
S24
S11 S25
S12 S26
S13 S27
S14 S28
NC 27 S29
Ordering Information:
48 pin DIP:
52 pin PLCC:
AS2590 P
AS2590 N
Applications:
For application support contact your local AMS sales
offices.
Rev. 1
11 Dec. 1993
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AS2590P.PDF ] | |
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