PT6594 Multifunction LCD Segment Drivers FEATURES LCD drive output: Common output: 4; Segment output: 42 Integrated Display data RAM (DDRAM): 42x4bit Integrated 3ch LED driver circuit 3-wire Serial interface (SD, SCL, CSB) Segment/LED (Max. 3 ports) output mode selectable Segment/GPO (Max. 27 ports) output mode selectable Support PWM generation from ext. or internal clock (Resolution: 8-bit mode/12-bit mode selectable) Integrated Oscillator circuit Integrated LCD Voltage generator circuit Support: 1/3 Bias, 1/3 or 1/4 Duty Support: 1/1 Bias, 1/1Duty (Static Driving) Bias: Static, 1/3 Integrated regulator for LCD driver: 3.2, 3.3, 3.4, 4.4, 4.5, 4.6, 5.0V selectable Integrated buffer amp Support separate power supply for Logic (VDD) and LCD (VLCD) Low power consumption Support standby mode Integrated Power-On-Reset circuit (POR) No external components Support Blink function (Blink frequency 1.6, 2.0, 2.6, 4.0Hz selectable) Operating power supply: 1.8~3.6V LCD drive power supply: 3.3~5.5V APPLICATIONS Telephone, FAX, Portable equipment (POS, ECR, PDA etc.) DSC, DVC, Car audio, Home electrical appliance, Meter equipment etc. BLOCK DIAGRAM Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan PT6594 APPLICATION CIRCUIT LED/GPO USING CASE SEG OUTPUT ONLY CASE V1.2 2 April 2014 PT6594 ORDER INFORMATION Valid Part Number PT6594 Package Type 56-Pin, QFN Top Code PT6594 PIN CONFIGURATION (BOTTOM VIEW) PIN DESCRIPTION Pin Name CSB SCL SD VDD TEST1 VSS1 I/O I I I I - Unused case GND INHb I VDD VLCD COM0~COM3 SEG0~SEG11 SEG12~SEG38 SEG39~SEG41 VSS2 O O O O - OPEN OPEN OPEN OPEN GND CLKIN I OPEN/ VSS EXT-PAD - VSS V1.2 Description Chip select: "L" active Serial data transfer clock Input serial data Power supply for LOGIC Test terminal (Please connect VSS terminal) GND Display turning on/off select terminal H: turning on display, L: turning off display INHb=“L”: All SEG/COM terminal: output VSS level GPO terminal: output VSS level LED drive terminal: output Hi-Z Power supply for LCD COMMON output for LCD SEGMENT output for LCD SEGMENT output for LCD/GPO SEGMENT output for LCD/LED driver GND(for SEG39~41/LED driver) External clock input terminal (for display/PWM using selectable) The internal pull down resistor is activated at internal clock mode Substrate 3 Pin No. 1 2 3 4 5 6 7 8 9~12 13~24 25~51 52~54 55 56 - April 2014 PT6594 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw V1.2 29 April 2014