PT2249AH Princeton Technology Corp, PT2249AH Datasheet - Page 6

• Manufacturer Part Number: PT2249AH
• Description: Infrared Remote Control Receiver
• Manufacturer: Princeton Technology Corp

Infrared Remote Control Receiver
PT2249A/50A v 2.3
e) The Code Bits Combinations of PT2248 and PT2250A Series are shown
below:
f) Example : (Refer to Example 2 diagram)
The following example shows the case when PT2248 Code Bits C1 = 0,
C2 = 0, and C3 = 1. The CODE1 and CODE2 pins of the PT2250A Series
are connected to the Vss (C1=0 and C2=0). In this way, the PT2250A or
any of its series matches the C1 and C2 Code Bits of PT2248; thus, the
remote commands are correctly decoded.
CODE
PT2248
T3
C1
0
0
1
1
Princeton Technology Corp.
C1=0 C2=0
T2
PT2248
Circuit Diagram when Code Bit C1= 0 and C2 = 0
C2
0
1
0
1
T1
K6
C3
1
1
1
1
PT2250A Series
C1
0
0
1
1
Example 2
Page 6
C2
0
1
0
1
PT2250A Series
PT2249A / PT2250A Series
CODE1 CODE2 OSC
C1=0 C2=0
URL: http://www.princeton.com.tw
Vcc
Revised Dec. 1999
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