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| Princeton Technology Corp. LCD Driver IC with Key Input Function DESCRIPTION Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6553 PT6553 is an LCD Driver IC providing key scan circuitry which can accept up to a maximum of 30 keys, thereby, reducing printed circuit board wiring. It can drive up to 126 segments and is capable of controlling up to 4 general purpose output ports. The reset circuit provides on-chip voltage detection making it possible to prevent incorrect displays. Pin assignments and application circuit are optimized for easy PCB layout and cost saving advantages. FEATURES * * * * * * * * Up to 126 Segments Outputs Up to 4 General Purpose Output Ports Key Input Function (up to 30 Keys) 1/3 Duty - 1/2 Bias and 1/3 Duty - 1/3 Bias Drive Techniques Sleep Mode and all Segments OFF Function Direct Display of Display Data without using a Decoder On-Chip Voltage-Detection Type Reset Circuit RC Oscillation Circuit APPLICATIONS * * * * * * * * * Cellular Phone Data Bank, Organizer Electronic Dictionary/Translator P.D.A. P.O.S. Information Appliance Caller ID Pager Electronic Equipment with LCD Display PT6553 v 1.0 1 Updated November 2000 Princeton Technology Corp. LCD Driver IC with Key Input Function PIN CONFIGURATION KO2/SG42 KO1/SG41 Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6553 COM3 COM2 COM1 SG40 SG39 SG38 SG37 SG36 SG35 SG34 34 38 47 46 43 41 40 39 36 48 45 44 42 KO6 KI1 KI2 KI3 KI4 KI5 TEST VDD VDD1 VDD2 VSS OSC DO CE CLK DI 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 37 35 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 SG33 KO4 KO5 KO3 SG32 SG31 SG30 SG29 SG28 SG27 SG26 SG25 SG24 SG23 SG22 SG21 SG20 SG19 SG18 SG17 P1/SG1 P3/SG3 SG5 SG7 SG8 SG9 P4/SG4 SG10 SG11 SG12 SG13 SG14 SG15 PT6553 v 1.0 P2/SG2 2 SG16 Updated November 2000 SG6 Princeton Technology Corp. LCD Driver IC with Key Input Function APPLICATION CIRCUIT 1 1/2 Bias (For Normal Panel Use) Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6553 P1 P2 P3 P4 GENERAL PURPOSE OUTPUT PORTS USED WITH THE BACKLIGHT CONTROLLER OR OTHER CIRCUITS +5V VDD (See Note 1) TEST VSS C > 0.047uF VDD1 VDD2 C OSC COM1 COM2 COM3 P1/SG1 P1/SG2 P3/SG3 P4/SG4 SG5 LCD PANEL (UP TO 126 SEGMENTS) SG40 FROM CONTROLLER TO CONTROLLER TO CONTROLLER POWER SUPPLY (See Note 2) CE CLK DI DO SG41/KO1 SG42/K02 KO3 KO4 KO5 SG41 SG42 Notes : 1. Connect a capacitor to the power supply line so that the when the PT6553 is reset by the VDET, the power supply VDD rise time when power is applied and the power supply voltage VDD fall time when power drops are both at least 1 ms. 2. Since the DO Pin is an open drain output, it needs a pull-up resistor (1 to 10 k Ohms) which is appropriate for the capacitance of the external wiring so that the waveforms are not degraded. KI1 KI2 KI3 KI4 KI5 KEY MATRIX (UP TO 30 KEYS) PT6553 v 1.0 3 Updated November 2000 Princeton Technology Corp. LCD Driver IC with Key Input Function APPLICATION CIRCUIT 2 1/2 Bias (For Normal Panel Use) Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6553 P1 P2 P3 P4 (See Note 1) +5V VDD TEST VSS C > 0.047uF 10 kOhms > R > 1kOhms C R VDD1 VDD2 R OSC COM1 COM2 COM3 P1/SG1 P1/SG2 P3/SG3 P4/SG4 SG5 GENERAL PURPOSE OUTPUT PORTS USED WITH THE BACKLIGHT CONTROLLER OR OTHER CIRCUITS LCD PANEL (UP TO 126 SEGMENTS) FROM CONTROLLER TO CONTROLLER TO CONTROLLER POWER SUPPLY CE CLK DI DO (See Note 2) SG41/KO1 SG42/K02 KO3 KO4 KO5 SG41 SG42 Notes : 1. Connect a capacitor to the power supply line so that the when the PT6553 is reset by the VDET, the power supply VDD rise time when power is applied and the power supply voltage VDD fall time when power drops are both at least 1 ms. 2. Since the DO Pin is an open drain output, it needs a pull-up resistor (1 to 10 k Ohms) which is appropriate for the capacitance of the external wiring so that the waveforms are not degraded. KI1 KI2 KI3 KI4 KI5 KEY MATRIX (UP TO 30 KEYS) PT6553 v 1.0 4 Updated November 2000 Princeton Technology Corp. LCD Driver IC with Key Input Function APPLICATION CIRCUIT 3 1/3 Bias (For Normal Panel Use) Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6553 P1 P2 P3 P4 GENERAL PURPOSE OUTPUT PORTS USED WITH THE BACKLIGHT CONTROLLER OR OTHER CIRCUITS OSC +5V (See Note 1) TEST VSS C > 0.047uF VDD COM1 COM2 COM3 P1/SG1 P1/SG2 P3/SG3 P4/SG4 SG5 VDD1 VDD2 LCD PANEL (UP TO 126 SEGMENTS) SG40 FROM CONTROLLER TO CONTROLLER TO CONTROLLER POWER SUPPLY (See Note 2) CE CLK DI DO SG41/KO1 SG42/K02 KO3 KO4 KO5 SG41 SG42 Notes : 1. Connect a capacitor to the power supply line so that the when the PT6553 is reset by the VDET, the power supply VDD rise time when power is applied and the power supply voltage VDD fall time when power drops are both at least 1 ms. 2. Since the DO Pin is an open drain output, it needs a pull-up resistor (1 to 10 k Ohms) which is appropriate for the capacitance of the external wiring so that the waveforms are not degraded. PT6553 v 1.0 5 Updated November 2000 KI1 KI2 KI3 KI4 KI5 KEY MATRIX (UP TO 30 KEYS) Princeton Technology Corp. LCD Driver IC with Key Input Function APPLICATION CIRCUIT 4 1/3 Bias (For Large Panel Use) Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6553 P1 P2 P3 P4 GENERAL PURPOSE OUTPUT PORTS USED WITH THE BACKLIGHT CONTROLLER OR OTHER CIRCUITS (See Note 1) +5V VDD TEST VSS C > 0.047uF R R C C R VDD1 VDD2 OSC COM1 COM2 COM3 P1/SG1 P1/SG2 P3/SG3 P4/SG4 SG5 LCD PANEL (UP TO 126 SEGMENTS) FROM CONTROLLER TO CONTROLLER TO CONTROLLER POWER SUPPLY (See Note 2) CE CLK DI DO SG41/KO1 SG42/K02 KO3 KO4 KO5 SG41 SG42 Notes : 1. Connect a capacitor to the power supply line so that the when the PT6553 is reset by the VDET, the power supply VDD rise time when power is applied and the power supply voltage VDD fall time when power drops are both at least 1 ms. 2. Since the DO Pin is an open drain output, it needs a pull-up resistor (1 to 10 k Ohms) which is appropriate for the capacitance of the external wiring so that the waveforms are not degraded. KI1 KI2 KI3 KI4 KI5 KEY MATRIX (UP TO 30 KEYS) PT6553 v 1.0 6 Updated November 2000 Princeton Technology Corp. LCD Driver IC with Key Input Function ORDER INFORMATION Valid Part Number PT6553 PT6553-LQ Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6553 Package Type 64 Pins, QFP Package 64 Pins, LQFP Package PT6553 v 1.0 7 Updated November 2000 |
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