T7933 T7932 COM32 000707EBA - Datasheet Archive

 

TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC T7933 ROW DRIVER LSI FOR A DOT MATRIX GRAPHIC LCD The T7933 is a row

 

T7933 T7933 TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC T7933 T7933 ROW DRIVER LSI FOR A DOT MATRIX GRAPHIC LCD The T7933 T7933 is a row (common) driver LSI for a small-or medium-scale dot matrix graphic LCD. The T7933 T7933 realizes a low power LCD system using the CMOS Si-Gate process. The T7933 T7933 generates timing signals for the display using a built-in oscillator and also controls the T7932 T7932 column (segment) LCD driver. Five duty options are available: 1/8, 1/12, 1/16, 1/24 and 1/32. The T7933 T7933 has 32 low-impedance output row drivers (1 k max). The T7933 T7933 includes internal resistors to the divide bias voltage for 1/16 duty and 1/32 duty displays. Features Weight: 1.1g (typ.) l Row signal output for LCD l LCD drive outputs : 32 (low impedance) l Built-in oscillator (additional external resistor and capacitor) l Built-in voltage dividers for 1/16 and 1/32 duty cycle l Duty : 1/8, 1/12, 1/16, 1/24, 1/32 l Low power consumption l Logic power supply : VDD = 5 V ± 10% l 60-pin plastic flat package 1 2001-11-27 T7933 T7933 Block Diagram Pin Assignment 2 2001-11-27 T7933 T7933 Pin Functions Pin Name I/O COM1 to COM32 COM32 Output CR, R, C Functions Signal Voltage LCD drive signal outputs VDD to VLC5 Pins for oscillator FR Output Frame signal output VDD to VSS SC Output Shift clock pulse output VDD to VSS M Output Display synchronous signal VDD to VSS Display select pin Display Duty 1 / 16 1 / 12 1 / 32 1 / 24 DS1 L L L H H DS2 L H H L L DS3 DS1 to DS3 1/8 L L H L H Input VDD to VSS Selects frequency Select oscillation frequency The relation between fFR and fosc is as follows: FS1 fM (Hz) fFR fCP (kHz) L 107.5 70 35 53.8 H L 107.5 70 35 53.8 L H 215.0 70 35 107.5 H Input fosc (kHz) L FS1, FS2 FS2 H 430.0 70 35 215.0 VDD to VSS fosc : Oscillation frequency fM : Synchronous signal frequency fFR : Frame frequency fCP : Frequencies of 1, 2 STB Input Input pin for test: usually connected to VDD Shift Register Shift direction select pin 1, 2 Output IR / OR Input Shift Direction COM1 COM32 COM32 L Input DSR H DSR COM32 COM32 COM1 VDD to VSS Operating clock output pins for T7932 T7932 1 The frequency of 1, 2 = fosc × 2 VDD to VSS IR / OR=H: LCD power supply divided by built-in voltage divider IR / OR=L: LCD power supply external input VDD to VSS 3 2001-11-27 T7933 T7933 Pin Name I/O Functions Signal Voltage Select voltage divide factor. (LCD voltage supply using built-in divider) 16 / 32 Input 16 / 32 = H: VLC1 to VLC5 1 1 duty, 16 / 32 = L: duty 16 32 Power supply for LCD drive l When IR / OR = H VLC1, VLC4 : Output VLC2, VLC3 : Output VLC5 : Input l When IR / OR = L VLC1, VLC4, VLC5 : Input VLC2, VLC3 : High Impedance VDD Power supply (5 V) VSS VDD to VSS Power supply (0 V) 4 2001-11-27 T7933 T7933 Function of Each Block On-chip oscillator The T7933 T7933 includes a built-in oscillator. (An external resistor must be connected between R and CR, and an external capacitor must be connected between C and CR). The external resistor and capacitor cause the oscillation frequency to change. Timing generator This circuit divides the oscillation frequency and generates display timing signals suitable for the duty factor. The DS1 to DS3 inputs set the duty factor. Bi-directional shift register The T7933 T7933 has a 32-bit bi-directional shift register. The DSR input sets the shift direction. The data shift is synchronized to the SC signal. LCD driver The T7933 T7933 has 32 row drivers and four LCD drive voltage output levels. The display data latched from the latch circuit and the FR signal select one of the four LCD drive voltage levels. On-chip voltage divider (IR / OR = H) (1) 16 / 32 = H (2) 16 / 32 = L Note 1: The T7933 T7933 can receive an external power supply via VLC1 and VLC4 when IR / OR = L. Note 2: The T7933 T7933 can supply power to an external driver via VLC2 and VLC3 when IR / OR = H. 5 2001-11-27 T7933 T7933 Relation between SC, FR and M of Relational Relation between Oscillation Frequency, RF and CF Rf, Cf connection 6 2001-11-27 T7933 T7933 Absolute Maximum Ratings (Ta = 25°C) Item Symbol Rating Unit Supply Voltage (1) VDD (Note 1) -0.3 to 7.0 V Supply Voltage (2) VLC2, VLC3, VLC5 (Note 1, 2) VDD - 13.5 to VDD + 0.3 V Input Voltage VIN (Note 1) -0.3 to VDD + 0.3 V Operating Temperature Topr -20 to 75 °C Storage Temperature Tstg -55 to 125 °C Note 1: Referenced to VSS = 0 V Note 2: Ensure that the following condition is always maintained. VDD VLC1 VLC4 VLC5 Electrical Characteristics DC Characteristics Test Conditions (Unless otherwise noted, VSS = 0 V, VDD = 5.0 V ± 10%, VLC5 = 0 V, Ta = -20 to 75°C) Item Symbol Test Circuit Test Condition Min Typ. Max Unit Operating Voltage (1) 4.5 5.0 5.5 V VDD Operating Voltage (2) VDD - 11 VDD - 3.0 V VLCS H Level VIH VDD - 1.0 VDD V L Level VIL 0 1.0 V H Level VOH VDD - 0.3 VDD V M, FR, SC, 1, 2 L Level VOL 0 0.3 V M, FR, SC, 1, 2 H Level VOH VDD - 0.3 VDD V COM1 to COM32 COM32 VLC1 = V1 V1 - 0.3 V1 + 0.3 V COM1 to COM32 COM32 VLC4 = V4 V4 - 0.3 V4 + 0.3 V COM1 to COM32 COM32 VLC2 = V2 V2 - 0.3 V2 + 0.3 V VLC2 VLC3 = V3 V3 - 0.3 V3 + 0.3 V VLC3 V5 V5 + 0.3 V COM1 to COM32 COM32 Input Voltage Output Voltage Output Voltage M Level L Level VOM VOL 7 Pin Name CR, FS1, FS2, DS1 to DS3, M, STB , IR / OR, DSR, 16 / 32, SC 2001-11-27 T7933 T7933 Symbol Test Circuit H Level ROH L Level ROL H Level ROH Item Output Resistance Test Condition Min Typ. Max Unit Pin Name VOUT = VDD - 0.5 V 1.0 k M, FR, SC, 1, 2 VOUT = 0.5 V 1.0 k M, FR, SC, 1, 2 VOUT = VDD - 0.5 V 1.0 k COM1 to COM32 COM32 VLC1 = V1, VOUT = V1 ± 0.5 V 1.0 k COM1 to COM32 COM32 VLC4 = V4, VOUT = V4 ± 0.5 V 1.0 k COM1 to COM32 COM32 Output M Level Resistance ROM L Level ROL VOUT = V5 ± 0.5 V VLC5 = V5 1.0 k COM1 to COM32 COM32 Operating Frequency fosc Ta = -10 to 70°C 70 500 kHz CR VDD = 5.0 V VLC5 = 0 V VLC1 = V1 VLC4 = V4 fosc = 430 kHz (Duty: 1 / 16) COM1 to COM32 COM32: No Load 400 µA VSS Current Consumption ISS 1 2 (VDD - VLC5), V2 = VDD - (VDD - VLC5) 5 5 4 3 (VDD - VLC5) V5 = VLC5 V4 = VDD - (VDD - VLC5), V3 = VDD - 5 5 Note 2: Output resistance measured when the on-chip voltage dividers are not used. Note 1: V1 = VDD - 8 2001-11-27 T7933 T7933 Application Circuit 9 2001-11-27 T7933 T7933 Package Dimensions 10 2001-11-27 T7933 T7933 RESTRICTIONS ON PRODUCT USE 000707EBA 000707EBA · TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc. · The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. · The products described in this document are subject to the foreign exchange and foreign trade laws. · The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. · The information contained herein is subject to change without notice. 11 2001-11-27