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| Princeton Technology Corp. Infrared Remote Control Receiver Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2249A / PT2250A Series Description The PT2249A / PT2250A Series are infra-red remote control receivers utilizing CMOS Technology. Remote Control System can be constructed together with the PT2248 remote control encoder. The PT2249A Series are packaged in 16 pins DIP and are capable of controlling 10 functions while the PT2250A Series are packaged in 24 pins DIP and are capable of controlling 18 functions. Several options, inverting/non-inverting IR signal input and/or dependent/independent cyclic (toggle) outputs, are provided to fit different application needs. Features ! ! ! ! CMOS Technology Low Power Consumption Very High Noise Immunity Able to output parallel multiple keying signals sent from the transmitter (PT2249A is able to output up to 5 functions simultaneously while PT2250A is able to output up to 6 functions simultaneously) Outputs for single pulse, hold pulse and cyclic pulse are provided A single terminal type oscillator by means of RC is provided Code Detection Circuit prevents interference from various types of machines and apparatus Digital Filtering and Code Checking prevent interference from light sources such as PL Lamp without sacrificing the receiving sensitivity ! ! ! ! Applications ! ! ! Audio Equipment Remote Control Television (TV) Remote Control Video Cassette Recorder (VCR) Remote Control PT2249A/50A v 2.3 Page 1 Revised Dec. 1999 Princeton Technology Corp. Infrared Remote Control Receiver Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2249A / PT2250A Series Pin Configurations VSS RXIN HP1 HP2 HP3 HP4 HP5 SP5 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC OSC CODE2 CODE3 SP1 SP2 SP3 SP4 VSS RXIN HP1 HP2 HP3 HP4 HP5 CP2 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC OSC CODE2 CODE3 SP1 SP2 SP3 CP1 (16 PDIP 300 mil) (16 PDIP 300 mil) PT2249A PT2249AI / PT2249AIN PT2249AL / PT2249ALN PT2249AH / PT2249AHN 24 23 22 21 20 19 18 17 16 15 14 13 VCC OSC CODE1 CODE2 SP1 SP2 SP3 SP4 SP5 SP6 SP7 SP8 VSS RXIN HP1 HP2 HP3 HP4 HP5 HP6 CP2 CP1 SP10 SP9 1 2 3 4 5 6 7 8 9 10 11 12 (24 PDIP 600 mil) PT2250A /PT2250AN PT2250AL / PT2250ALN ANILH- A d vanced Version Inv ersed R X IN Input In dependent C yclic (Toggle) O utputs A d vanced D epend en t C y clic (Tog gle) O utp uts) O u tpu t Fo rm at sam e as "L", except that w h en H P 1 or H P2 is active, it w ill clear C P 1. PT2249A/50A v 2.3 Page 2 Revised Dec. 1999 Princeton Technology Corp. Infrared Remote Control Receiver Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2249A / PT2250A Series Application Circuit Vcc CONTROL SIGNAL OUTPUT 1000pF 39K PT2249A CONTROL SIGNAL OUTPUT RX INPUT Vcc CONTROL SIGNAL OUTPUT 1000pF 39K PT2250A CONTROL SIGNAL OUTPUT RX INPUT PT2249A/50A v 2.3 Page 3 Revised Dec. 1999 Princeton Technology Corp. Infrared Remote Control Receiver Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2249A / PT2250A Series Application Note: 1. Combination of PT2248/PT2249A Series Code Bits a) PT2249A Series Code Bit C1 is internally pulled high and thereby set at a default value of "1". Thus, PT2248 Code Bit C1 must be set at "1". b) PT2249A Series Code Bits C2 and C3 may be programmed as follows: 1) 2) 3) 4) "0", "0" (This combination is not available with TC9149.) "0", "1" "1", "0" "1", "1" 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, except C1 - add one diode. e) The Code Bits Combinations of PT2248 and PT2249A Series are shown below: PT2248 C2 C3 0 0 0 1 1 0 1 1 PT2249A Series C2 C3 0 0 0 1 1 0 1 1 C1 1 1 1 1 f) Example : (Refer to Example 1 diagram) The following example shows the case when PT2248 Code Bits C1 = 1, C2 = 1, and C3 = 0. The CODE2 Pin of the PT2249A Series is programmed in floating state and CODE3 pin is connected to Vss (C2 = 1, PT2249A/50A v 2.3 Page 4 Revised Dec. 1999 Princeton Technology Corp. Infrared Remote Control Receiver Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2249A / PT2250A Series C3 = 0. ) In this way, the PT2249A Series can match the C2, C3 Code Bits of PT2248 and correctly decode the remote commands. PT2248 CODE T3 T2 T1 K6 C3=0 PT2249A Series CODE3 CODE2 OSC Vcc C2=1 C2=1 C3=0 C1=1 Example 1 Circuit Diagram when Code Bit C2 = 1 and C3 = 0 2. Combination of PT2248/PT2250A Series Code Bits 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: 1) 2) 3) 4) "0", "0" (This combination is not available with TC9150.) "0", "1" "1", "0" "1", "1" 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. PT2249A/50A v 2.3 Page 5 Revised Dec. 1999 Princeton Technology Corp. Infrared Remote Control Receiver Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2249A / PT2250A Series e) The Code Bits Combinations of PT2248 and PT2250A Series are shown below: C1 0 0 1 1 PT2248 C2 0 1 0 1 C3 1 1 1 1 PT2250A Series C1 C2 0 0 0 1 1 0 1 1 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. PT2248 CODE T3 T2 T1 K6 C1=0 C2=0 PT2250A Series CODE1 CODE2 OSC Vcc +5V C1=0 C2=0 Example 2 Circuit Diagram when Code Bit C1= 0 and C2 = 0 PT2249A/50A v 2.3 Page 6 Revised Dec. 1999 |
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