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| TB2104F TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic TB2104F VFD Driver The TB2104F is a VFD (fluorescent display tube) driver IC implemented by the Bi-CMOS process. The logic section is configured with CMOS transistors, and the high voltage tolerant output driver section is configured with bipolar transistors. Features * * * * * Incorporates a shift register, latch, and driver capable of handling 20 bits of data. The output driver comes with an active pull-down, so it can function as a VFD grid, anode driver. Three serial data lines are used to input display data. The data receiver section can also accept general-purpose serial data and T-BUS (TOSHIBA semiconductor bus). Weight: 0.7g (typ.) In serial data mode, multiple drivers can be cascaded to expand the handling capacity in 20bit increments. Pin Connection Block Diagram 1 2002-10-30 TB2104F Pin Function Pin No. 1 Symbol AD1 Address setting input Chip select / address setting inputs When using in serial mode, keep AD1 and AD2 "open". In other settings than "open", it becomes T-BUS mode and addresses up to 8 kinds can be set. Pin Name Function And Operation Remarks 30 AD2 3 28 29 LS CLK DIN Strobe input Clock input Data input Serial data input terminals Inputs display data through the DIN terminal synchronizing with rise of CLK input. Display data are updated when inputting "H" level into LS terminal after completing data input. In T-BUS mode, LS terminal becomes "period" input. Lamp test input terminal and data output terminal In serial mode (AD1 = AD2 = open), this terminal serves as the serial data output terminal and enables cascade connection of driver IC. In T-BUS mode, this terminal serves as the lamp test input and is able to use all the driver outputs (HVO-1~20) at "H" level by inputting "H" level signal. During the normal operation in T-BUS mode, use this terminal by fixing at "L" level. Driver off (blanking) input terminal All the driver outputs are fixed at "L" level when "L" level signal is input. When "H" level signal is input, it becomes the normal mode. CMOS input 2 CG / DO Lamp test input and data output CMOS input / CMOS output built in pull-down resistor 20k CMOS input built in pull-up resistor 20k 4 CL Clear input 5 26 27 VDD VDR GND Logic unit power supply Drive unit power supply Ground High-tension driver output terminal Equivalent circuit Power supply and GND terminals -- 25 24 23 8 7 6 HVO-1 HVO-2 HVO-3 HVO-18 HVO-19 HVO-20 Driver output -- 2 2002-10-30 TB2104F Explanation Of Operation 1. Serial data receiver circuit * The serial data receiver circuit can be changed over to operate in the serial mode or the T-BUS mode by switching, the AD1 / AD2 terminals. * In T-BUS mode, the AD1 / AD2 terminals become the chip select code inputs and it becomes possible to connect up to 8 drivers on the same bus line. 1) Input data format in serial data mode (AD1 = AD2 = "open") * * Display data are updated when data for 20 bits are input from MSB side (HVO-20), synchronizing with rise of CLK signal and LS input is set to "H" level after inputting data. When increasing driver ICs, connect them through cascade connection as shown below: 2. Input data format in T-BUS mode 3 2002-10-30 TB2104F * In T-BUS mode, start data transmission with the LS terminal (period) set at "L" level. Thereafter, send address data 8 bits, display data 20 bits, and chip select code 4 bits, synchronizing with rise of CLK signal. After sending data, set the LS terminal to "L" level again and terminate the data sending. On a driver IC when chip select code agrees with chip select code by AD1 / AD2, display data are updated at fall of LS signal. When increasing driver ICs, it is possible to connect up to 8 ICs on the same bus line in combination with AD1 / AD2. T-BUS address of the TB2104F is "D4H". When data are transferred using T-BUS address "00H", the data can be input to all the driver ICs on the bus line independently of chip select codes ("0H"~"7H"). (This function can be used for power on reset.) * * * * * 3. AD1 / AD2 input and chip select codes AD1 / AD2 input are 3-value level inputs and 9 kinds (3x3) of codes can be set. AD1 VIH VIM VIL VIH VIM VIL VIH VIM VIL VIL VIM VIH AD2 A 1 0 1 0 -- 1 0 1 0 B 1 1 0 0 -- 1 1 0 0 C 1 1 1 1 -- 0 0 0 0 Chip Select Code "7H" "6H" "5H" "4H" -- "3H" "2H" "1H" "0H" T-BUS Serial T-BUS Mode 4. Example of extension of driver ICs in T-BUS mode chip select code 4 2002-10-30 TB2104F 5. T-BUS mode timing chart * * * fCLK 500kHz t1 0.2s, t2 0.2s t3 1.0s, t4 1.0s Cautions for use * Therefore, multiple driver outputs may possibly become "H" level simultaneously after the power is turned on. (In this case, the allowable power dissipation of a device using this IC may possible be exceeded, destroying the device.) * In order to avoid this, while keeping the clear terminal (CL) at "L" level, rise the power supply for the logic unit (VDD) and then, that for the drivers (VDR), reset all the contents of the data latch ("L" level) by serial data, and initialize the driver outputs. 5 2002-10-30 TB2104F Maximum Ratings (Ta = 25C) Characteristic Supply voltage Input voltage Driver voltage Driver current Power dissipation Operating temperature Storage temperature Symbol VDD VIN VDR IDR PD (Note) Topr Tstg Rating -0.3~7.0 -0.3~VDD+0.3 VDD~60 50 800 -40~85 -55~150 Unit V V V mA mW C C (Note) In case it is used at more than Ta = 25C, it is considered by reducing 6.4mW each 1C. Electrical Characteristics (unless otherwise specified, VDD = 5V, VDR = 50V, Ta = 25C) Characteristic Operating supply voltage (1) Operating supply voltage (2) Operating supply current (1) Operating supply current (2) Input voltage "H" level "L" level "H" level Input voltage Open "L" level Input current Input resistance Output current Output current Clock frequency Clock pulse width Data setup time Data hold time LS pulse width CLK-LS delay time CLK-DOUT delay time "H" level "L" level "H" level "L" level "H" level "L" level Symbol VDD VDR IDD IDR VIH (1) -- VIL (1) VIH (2) VIM VIL (2) IIH IIL RIN IOH (1) IOL (1) IOH (2) IOL (2) fCLK twc tds tdh twl tdc tpd Fig. 1 -- -- -- CMOS input terminal VIH = 5V VIL = 0V -- 3-value input terminal AD1, AD2 Test Circuit -- -- -- -- Logic unit Driver unit No load, no input No load, output VOL level CMOS input terminal DIN, CLK, LS, CG, CL Test Condition Min. 4.5 10 -- -- VDD x0.7 GND VDD -0.5 -- GND -1.0 -1.0 80 -- 2.0 -- 0.1 -- 75 50 50 80 50 -- Typ. 5.0 ~ 0.3 2.3 ~ ~ ~ VDD x0.5 ~ ~ ~ 100 -8.4 2.7 -0.3 0.3 5.0 60 40 40 60 40 120 Max. 5.5 50 1.5 3.5 VDD VDD x0.3 VDD -- GND +0.5 1.0 1.0 120 -5 -- -0.1 -- 4.0 -- -- -- -- -- 160 A k mA V V Unit V V mA mA 3-value input terminal HVO-1~-20 output terminal DO output terminal VOH = 45V VOL = 3V VOH = 4V VOL = 1V -- mA MHz ns ns ns ns ns ns CLK max. operating CLK min. operating DIN min. operating pulse width LS min. operating CLKLS delay time CLKDOUT delay time CL = 30pF 6 2002-10-30 TB2104F Fig. 1: Serial data timing chart 7 2002-10-30 TB2104F Package Dimensions Weight: 0.7g (typ.) 8 2002-10-30 TB2104F RESTRICTIONS ON PRODUCT USE 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. 9 2002-10-30 |
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