EM91203A EMC [ELAN Microelectronics Corp], EM91203A Datasheet - Page 2

• Manufacturer Part Number: EM91203A
• Description: TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
• Manufacturer: EMC [ELAN Microelectronics Corp]

FUNCTIONAL BLOCK DIAGRAM
* This specification are subject to be changed without notice.
EM91203
Keyboard Arrangement
Pin Assignment
ROW1
ROW2
ROW3
ROW4
Type A
COL4/KT
XMUTE
COL1
XOUT
*/T
COL5
COL3
COL2
COL1
1
4
7
XIN
VSS
EM91203AP
COL4/KT
COL2
1
2
3
4
5
6
7
8
9
XOUT
ROW1
ROW4
COL1
COL2
COL3
COL5
2
5
8
0
XIN
18
17
16
15
14
13
12
11
10
COL3
PM
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
3
6
9
#
Keyboard
Keyboard
Oscillator
interface
(column)
interface
(Row)
COL4/KT
SAVE
RD/P
F
VDD
SDO
COL5
EM1
EM2
EM3
ST
Timing/Control circuit
HFO PM
COL4/KT
XMUTE
HFI
Output circuit
XOUT
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
COL5
COL3
COL2
COL1
Input circuit
XIN
VSS
HFI
NC
EM91203CK
HKS
Memory
10
11
1
2
3
4
5
6
7
8
9
22
21
20
19
18
17
16
15
14
13
12
ROW1
ROW2
ROW3
ROW4
XMUTE
SDO
PM
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO
Type B
VDD
decoder
generator
latch
programming counter
Pulse
COL1
&
1
4
7
*
Row/Column
COL4/KT
XMUTE
XOUT
COL2
COL5
COL3
COL2
COL1
XIN
VSS
HFI
2
5
8
0
EM91203BP
converter
D/A
10
1
2
3
4
5
6
7
8
9
COL3
3
6
9
#
PO
20
19
18
17
16
15
14
13
12
11
DTMF
COL4/KT
SAVE
RD/P
PM
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO
P T
F
EM91203 SERIES
COL5
EM1
EM2
EM3
ST
10.1.1997
2