EM32117
16DIGITLCDDRIVERWITHCHECKTIMEFUNCTION
RD
HOLD MEMORY
PAGE AUTO LOCK SAVE
MUTE
GF
SPEAKER
ALARM STORE
SEG31 SEG29
SEG27 SEG25 SEG23 SEG21 SEG19 SEG17 SEG15 SEG13 SEG11 SEG9 SEG7
SEG5 SEG3 SEG1
SEG4 SEG2 SEG0
SEG30 SEG28
SEG26 SEG24 SEG22 SEG20 SEG18 SEG16 SEG14 SEG12 SEG10 SEG8 SEG6
Figure 2 - Segment pin wiring diagram
Serial Data Interface
Since the serial data transmitters (e.g. EM91465 series dialers) may have different voltage level from EM32117,
therefore the following interconnecting scheme is recommended when using the EM32117 as a serial data
receiver. The SDO output from the serial data transmitters should be of NMOS open-drain structure as shown
below.
VCC
EM32117
Dialer
5
6
4
5
2
6
4
1
3
SDO
SDI
Vss
1
3
2
Vss
Vss
Data Format
When the EM32117 senses the falling edge of the Start bit, it will sample subsequent bits in the middle of each
bit. The received bit will then be assembled and decoded, and corresponding pattern will be displayed on LCD
panel. The serial data format is as follows:
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
0
1
0
1
Stop Bit
Start Bit
Data Bits
Protocol
There are three categories of dialing data, and representation and interpretation of serial data is as the following:
(Note: Codes 0000 and 1111 will be interpreted as" " (blank pattern) and"-"patterns, respectively and they
will shift on LCD panel just as other digit codes.
* This specification are subject to be changed without notice.
3.17.1999
4
ELAN [ ELAN MICROELECTRONICS CORP ]
