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T6C24
TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC
T6C24
ROW DRIVER LSI FOR A DOT MATRIX LCD
The T6C24 is a row (common) driver LSI for a dot matrix LCD. The T6C24 generates the timing signals for the display using a built-in oscillator and also controls the T6C23 column (segment) LCD driver. The T6C24 features a low-impedance 240-output row driver. The T6C24 also includes internal resistors to divide the bias voltage, a power supply op-amp and a contrast control circuit. The T6C24 can be used in conjunction with the T6C23 to construct a low-power LCD system.
Features
l Dot matrix graphic LCD row driver l Built-in oscillator (additional external resistor) l Duty l Display OFF function VSS l Low power consumption l Logic power supply l LCD power supply l CMOS process l Package : TCP (Tape Carrier Package) : 2.7 to 5.5 V : 8.0 V to 30.0 V : 1/240 : /DSPOF = L, all LCD outputs =
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T6C24
Block Diagram
Pin Assignment
Note: The above diagram shows the pin configuration of the LSI chip; it does not show the configuration of the tape carrier package.
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T6C24
Pin Functions
Pin Name COM1 to COM240 CL FP FR Pin No. 27 to 266 17 19 18 I/O Output Output Output Output Row driver outputs Shift clock pulse Display synchronous signal Frame signal Data flow direction select. Usually connected to VDD DIR H L WFS 10 Input DATA FLOW COM1 COM240 COM240 COM1 Functions
DIR
11
Input
Frame signal inversion select. Usually connected to VDD. WFS = H: FR phase change per 13 lines. WFS = L: FR phase change per 17 lines. Display off. Usually connected to VDD / DSPOF = H: Display-on mode, (COM1 to COM240) are operational. / DSPOF = L: Display-off mode, (COM1 to COM240) are at the VSS level. / RST = L: Reset state. Usually connected to VDD Crystal oscillation / CR oscillation Select CPX = L : CR oscillation CPX = H : Crystal oscillation or external clock input from CIN Connected to resistor for built-in oscillator Connected to crystal Connected to resistor or crystal for built-in oscillator Test pin. Usually connected to VDD Power supply
/ DSPOF / RST CPX RIN CIN CKOUT / TEST VDD, VSS VCCL, VCCR VLC0L, VLC0R VLC1L, VLC1R VLC4L, VLC4R VLC5L, VLC5R HVSSL, HVSSR
16 9 12 13 15 14 8 7, 20 1, 26 2, 25 3, 24 4, 23 5, 22 6, 21
Input Input Input Input Input Output Input
Power supply for LCD drive
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T6C24
Function of Each Block
Oscillator
The T6C24 has an on-chip oscillator (an external resistor is required).
(1) CPX = L
Rf 390 k 620 k 780 k fosc 54 kHz 34 kHz 27 kHz
Note: The resistor values are typical values. The oscillation frequency depends on how the device has been mounted. Hence Rf must be adjusted to achieve the target oscillation frequency.
(2) CPX = H
Timing generation circuit
This circuit divides the oscillator frequency and generates the display timing signals (CL, FP and FR).
Shift register
240-bit shift register
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T6C24
Row driver circuit and LCD voltage generation circuit
The T6C24 has 240 row drivers and four different LCD drive output voltage levels. The display data from the latch circuit and the M signal determine which of the four LCD drive voltage is selected. The voltage generation circuit and row driver circuit are shown in the following diagram.
Absolute Maximum Ratings (Ta = 25C)
Item Supply Voltage (1) Supply Voltage (2) Input Voltage Operating Temperature Storage Temperature Symbol VDD (Note 2) (Note 1, 2) Vin (Note 2, 3) Topr Tstg Rating -0.3 to 7.0 -0.3 to 32.0 -0.3 to VDD + 0.3 -20 to 75 -55 to 125 Unit V V V C C
Note 1: Note 2: Note 3: Note 4:
VCCL, VCCR, VLC0L, VLC0R, VLC1L, VLC1R, VLC4L, VLC4R, VLC5L and VLC5R Referenced to VSS, HVSSL and HVSSR Applies to all data bus and I / O pins. Ensure that the following condition is always maintained. VCCL / R VLC0L / R VLC1L / R VLC4L / R VLC5L / R HVSSL / R
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T6C24
Electrical Characteristics DC Characteristics Test Conditions (1)
Unless Otherwise Noted, VSS = 0 V, VDD = 3.0 V 10%, VCCL / R = 23.0 V 10%, Ta = -20 to 75C
Item Operating Supply (1) Operating Supply (2) Input Voltage H Level L Level H Level L Level Symbol VDD VCC VIH VIL VOH VOL Rrow Test Circuit Test Condition IOH = -400 A IOL = 400 A (Note 5) Load voltage = output level of 0.5 V VIN = VDD to GND (Note 1) (Note 2) (Note 3) (Note 4) Min 2.7 8.0 0.7 VDD 0 VDD - 0.4 VSS Typ. Max 3.3 30.0 VDD 0.3 VDD VSS +0.4 1.5 Unit V V V V V CL, FP, FR V COM1 to COM240 WFS, CPX, DIR, / DSPOF, / RST, / TEST VDD VCCL, VCCR VLC0L, VLC0R VSS, VSSL, VSSR VLC5L, VLC5R VSS, VSSL, VSSR VLC5L, VLC5R RIN, CIN CIN CIN CIN Pin Name VDD VCCL, VCCR WFS, CPX, DIR, / DSPOF, / RST, / TEST
Output Voltage
Row Driver Output Resistance
k
Input Leakage Current Consumption (1) Current Consumption (2) Current Consumption (3) Current Consumption (4) Operating Freq. External Clock Frequency External Clock Duty External Clock Rise / Fall Time
IIL ISS ICC IDOF ISTB fosc fex fduty tr / tf
-1
1
A

-1 20 20 40
-35 10 25 50
-50 20 40 1 100 100 60 50
A A A A kHz kHz % ns
Note 1: Logic current : VDD = 3.0 V 10%, Ta = 25C, Rf = 620 k (33.6 kHz), no load Note 2: LCD driver current : VDD = 3.0 V 10%, VCCL / R = 23.0 V, Ta = 25C, 1 / 13 bias, Rf = 620 k, no load Note 3: Display-off current : VDD = 3.0 V 10%, VCCL / R = 23.0 V, Ta = 25C, 1 / 13 bias, Rf = 620 k, / DSPOF = L, no load Note 4: Standby current : VDD = 3.0 V 10%, VCCL / R = 23.0 V, Ta = 25C, 1 / 13 bias, Rf = 620 k, / RST = L, no load Note 5: VCCL / R = VLC0L / R = 23.0 V, VLC1L / R = VCC x 12 / 13, VLC4L / R = VCC x 1 / 13, HVSSL / R = VLC5L / R = 0 V
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T6C24
Test Conditions (2)
Unless Otherwise Noted, VSS = 0 V, VDD = 5.0 V 10, VCCL / R = 23.0 V 10, Ta = -20 to 75C
Item Operating Supply (1) Operating Supply (2) Input Voltage H Level L Level H Level L Level Symbol VDD VCC VIH VIH VOH VOL Rrow Test Circuit Test Condition IOH = -400 A IOL = 400 A (Note 5) Load voltage = output level of 0.5 V VIN = VDD to GND (Note 1) (Note 2) (Note 3) (Note 4) Min 4.5 8.0 0.7 VDD 0 VDD - 0.4 VSS Typ. Max 5.5 30.0 VDD 0.3 VDD VSS + 0.4 1.5 Unit V V V V V CL, FP, FR V COM1 to COM240 WFS, CPX, DIR, / DSPOF, / RST, / TEST VDD VCCL, VCCR VLC0L, VLC0R VSS, VSSL, VSSR VLC5L, VLC5R VSS, VSSL, VSSR VLC5L, VLC5R RIN, CIN CIN CIN CIN Pin Name VDD VCCL, VCCR WFS, CPX, DIR, / DSPOF, / RST, / TEST
Output Voltage
Row Driver Output Resistance
k
Input Leakage Current Consumption (1) Current Consumption (2) Current Consumption (3) Current Consumption (4) Operating Freq. External Clock Frequency External Clock Duty External Clock Rise / Fall Time
IIL ISS ICC IDOF ISTB fosc fex fduty tr / tf
-1
1
A

-1 20 20 40
-60 10 50 50
-90 20 80 1 100 100 60 50
A A A A kHz kHz % ns
Note 1: Logic current : VDD = 5.0 V 10%, Ta = 25C, Rf = 620 k (33.6 kHz), no load Note 2: LCD driver current : VDD = 5.0 V 10%, VCCL / R = 23.0 V, Ta = 25C, 1 / 13 bias, Rf = 620 k, no load Note 3: Display-off current : VDD = 5.0 V 10%, VCCL / R = 23.0 V, Ta = 25C, 1 / 13 bias, Rf = 620 k, / DSPOF = L, no load Note 4: Standby current : VDD = 5.0 V 10%, VCCL / R = 23.0 V, Ta = 25C, 1 / 13 bias, Rf = 620 k, / RST = L, no load Note 5: VCCL / R = VLC0L / R = 23.0 V, VLC1L / R = VCC x 12 / 13, VLC4L / R = VCC x 1 / 13, HVSSL / R = VLC5L / R = 0 V
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T6C24
RESTRICTIONS ON PRODUCT USE
000707EBE
* 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. * Polyimide base film is hard and thin. Be careful not to injure yourself on the film or to scratch any other parts with the film. Try to design and manufacture products so that there is no chance of users touching the film after assembly, or if they do , that there is no chance of them injuring themselves. When cutting out the film, try to ensure that the film shavings do not cause accidents. After use, treat the leftover film and reel spacers as industrial waste. * Light striking a semiconductor device generates electromotive force due to photoelectric effects. In some cases this can cause the device to malfunction. This is especially true for devices in which the surface (back), or side of the chip is exposed. When designing circuits, make sure that devices are protected against incident light from external sources. Exposure to light both during regular operation and during inspection must be taken into account. * 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.
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