PT2250A PTC [Princeton Technology Corp], PT2250A Datasheet - Page 5

• Manufacturer Part Number: PT2250A
• Description: Infrared Remote Control Receiver
• Manufacturer: PTC [Princeton Technology Corp]

Infrared Remote Control Receiver
2. Combination of PT2248/PT2250A Series Code Bits
PT2249A/50A v 2.3
C3 = 0. ) In this way, the PT2249A Series can match the C2, C3 Code Bits
of PT2248 and correctly decode the remote commands.
a) PT2250A Series Code Bit C3 is internally pulled high and thereby set at
a default value of “1”. Thus, PT2248 Code Bit C3 must be set at “1”.
b) PT2250A Series Code Bits C2 and C3 may be programmed as follows:
c) To set Code Bit to “1” on PT2248, diodes must be connected to Code
Terminal from the T1 ~ T3 terminals.
d) To set Code Bit to “0” on PT2248, the terminals must be kept floating.
CODE
C3=0
C2=1
C1=1
1) “0”, “0” (This combination is not available with TC9150.)
2) “0”, “1”
3) “1”, “0”
4) “1”, “1”
T3
PT2248
Circuit Diagram when Code Bit C2 = 1 and C3 = 0
Princeton Technology Corp.
T2
T1
K6
Example 1
Page 5
PT2249A / PT2250A Series
PT2249A Series
C3=0
CODE3 CODE2 OSC
C2=1
URL: http://www.princeton.com.tw
Revised Dec. 1999
Vcc
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