EM32117Q Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM32117Q Datasheet PDF : 21 Pages
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EM32117
16 DIGIT LCD DRIVER WITH CHECK TIME FUNCTION
Preliminary
RD SPEAKER HOLD MEMORY
GF ALARM STORE PAGE AUTO LOCK SAVE MUTE
SEG31 SEG29 SEG27 SEG25 SEG23 SEG21 SEG19 SEG17 SEG15 SEG13 SEG11 SEG9 SEG7 SEG5 SEG3 SEG1
SEG30 SEG28 SEG26 SEG24 SEG22 SEG20 SEG18 SEG16 SEG14 SEG12 SEG10 SEG8 SEG6 SEG4 SEG2 SEG0
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.
Dialer
VCC
EM32117
SDO
1
2
3
5
65
6
SDI Vss
4
4
1
2
3
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:
Protocol
0
1
Start Bit
Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5
Data Bits
0
1
Stop Bit
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
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