PT2248 Ver la hoja de datos (PDF) - Princeton Technology
Número de pieza
componentes Descripción
Fabricante
PT2248 Datasheet PDF : 19 Pages
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Infrared Remote Control Transmitter
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URL: http://www.princeton.com.tw
PT2248
DATA CODE
Key
Data
Output Key
Data
Output
No. H S1 S2 D1 D2 D3 D4 D5 D6
Form
No. H S1 S2 D1 D2 D3 D4 D5 D6
Form
1
1 0 0 1 0 0 0 0 0 Continuous 10 0 1 0 0 0 0 1 0 0 Single-Shot
2
1 0 0 0 1 0 0 0 0 Continuous 11 0 1 0 0 0 0 0 1 0 Single-Shot
3
1 0 0 0 0 1 0 0 0 Continuous 12 0 1 0 0 0 0 0 0 1 Single-Shot
4
1 0 0 0 0 0 1 0 0 Continuous 13 0 0 1 1 0 0 0 0 0 Single-Shot
5
1 0 0 0 0 0 0 1 0 Continuous 14 0 0 1 0 1 0 00 0 0 Single-Shot
6
1 0 0 0 0 0 0 0 1 Continuous 15 0 0 1 0 0 1 0 0 0 Single-Shot
7
0 1 0 1 0 0 0 0 0 Single-Shot 16 0 0 1 0 0 0 1 0 0 Single-Shot
8
0 1 0 0 1 0 0 0 0 Single-Shot 17 0 0 1 0 0 0 0 1 0 Single-Shot
9
0 1 0 0 0 1 0 0 0 Single-Shot 18 0 0 1 0 0 0 0 0 2 Single-Shot
Since multiple keying is possible, Key No. 1 ~ 6 (in combination with D1 ~ D6 data) are capable of
sending out 63 commands. Key No. 7 ~ 18 are single-shot keys capable of sending out 12 commands.
Thus, a total of 75 commands can result from a combination of continuous keys (multiple keying) and
single-shot keys.
CODE BITS (C1, C2 AND C3)
Code bits can be made at one terminal with diodes connected through T1 ~ T3 timing terminals.
Data of C1, C2 and C3 Code Bits become “1” when diodes are connected to CODE Terminal through
the timing signal terminals -- T1 ~ T3, and “0” when diodes are not connected.
CODE T3
T2 T1
(C3) (C2) (C1)
In the diagram above: C1, C2 and C3 are 1, 1, and 1 data respectively.
PT2248 has three (3) Code Bits. The receiving IC -- PT 2249A Series (DIP 16 Pins) can only use C2
and C3 Code Bits, while PT 2250A Series (DIP 24 Pins) are able to use only C1 and C2 Code Bits.
Therefore, diodes must be connected so that PT2248 Code Bits Data match with that of the receiving
IC.
PT2248 V2.7
-6-
June, 2005
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