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 1 16 VCC VSS 1 16 VCC RXIN 2 15 OSC RXIN 2 15 OSC HP1 3 14 CODE2 HP1 3 14 CODE2 HP2 4 13 CODE3 HP2 4 13 CODE3 HP3 5 12 SP1 HP3 5 12 SP1 HP4 6 11 SP2 HP4 6 11 SP2 HP5 7 10 SP3 HP5 7 10 SP3 SP5 8 9 SP4 CP2 8 9 CP1 (16 PDIP 300 mil) (16 PDIP 300 mil) PT2249A PT2249AI / PT2249AIN PT2249AL / PT2249ALN PT2249AH / PT2249AHN VSS 1 24 VCC RXIN 2 23 OSC HP1 3 22 CODE1 HP2 4 21 CODE2 HP3 5 20 SP1 HP4 6 19 SP2 HP5 7 18 SP3 HP6 8 17 SP4 CP2 9 16 SP5 CP1 10 15 SP6 SP10 11 14 SP7 SP9 12 13 SP8 ANI LH- (24 PDIP 600 mil) PT2250A /PT2250AN PT2250AL / PT2250ALN PT2249A/50A v 2.3 Page 2 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. 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 PT2249A 1000pF 39K 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: C1 1 1 1 1 PT2248 C2 C3 0 0 0 1 1 0 1 1 PT2249A Series C2 C3 0 0 0 1 1 0 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. PT2249A Series PT2248 CODE T3 T2 T1 K6 CODE3 CODE2 OSC Vcc C3=0 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 PT2250A Series T1 K6 CODE1 CODE2 OSC Vcc +5V C1=0 C2=0 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