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). · In serial data mode, multiple drivers can be cascaded to expand the handling capacity in 20bit increments. Pin Connection Weight: 0.7g (typ.) Block Diagram 1 2002-10-30 TB2104F Pin Function Pin No. Symbol 1 AD1 Pin Name Address setting input 30 AD2 3 LS Strobe input 28 CLK Clock input 29 DIN Data input 2 CG / DO Function And Operation Remarks ・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. ・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. CMOS input Lamp test input and data output ・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. CMOS input / CMOS output built in pull-down resistor 20kΩ Clear input ・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 built in pull-up resistor 20kΩ 4 CL 5 VDD Logic unit power supply 26 VDR Drive unit power supply 27 GND Ground ・Power supply and GND terminals — ・High-tension driver output terminal ・Equivalent circuit 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 (3×3) of codes can be set. AD1 AD2 VIH VIM VIH VIL VIH A B C Chip Select Code 1 1 1 “7H” 0 1 1 “6H” 1 0 1 “5H” 0 0 1 “4H” — — — — VIL 1 1 0 “3H” VIH 0 1 0 “2H” 1 0 0 “1H” 0 0 0 “0H” VIM VIM VIL VIM VIL Mode T-BUS Serial T-BUS 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 ≥ 0.2µs, t2 ≥ 0.2µs · t3 ≥ 1.0µs, t4 ≥ 1.0µs 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 = 25°C) Characteristic Symbol Rating Unit Supply voltage VDD -0.3~7.0 V Input voltage VIN -0.3~VDD+0.3 V Driver voltage VDR VDD~60 V Driver current IDR Power dissipation PD (Note) 50 mA 800 mW Operating temperature Topr -40~85 °C Storage temperature Tstg -55~150 °C (Note) In case it is used at more than Ta = 25°C, it is considered by reducing 6.4mW each 1°C. Electrical Characteristics (unless otherwise specified, VDD = 5V, VDR = 50V, Ta = 25°C) Symbol Test Circuit Operating supply voltage (1) VDD — Operating supply voltage (2) VDR Operating supply current (1) Operating supply current (2) Characteristic Input voltage Input voltage Input current “H” level Output current Typ. Max. Unit Logic unit 4.5 5.0 5.5 V — Driver unit 10 ~ 50 V IDD — No load, no input — 0.3 1.5 mA IDR — No load, output VOL level — 2.3 3.5 mA VDD ×0.7 ~ VDD — CMOS input terminal DIN, CLK, LS, CG, CL “L” level VIL (1) GND ~ VDD ×0.3 “H” level VIH (2) VDD -0.5 ~ VDD — VDD ×0.5 — GND ~ GND +0.5 VIH = 5V -1.0 ~ 1.0 VIL = 0V -1.0 ~ 1.0 80 100 120 VOH = 45V — -8.4 -5 VOL = 3V 2.0 2.7 — VOH = 4V — -0.3 -0.1 VOL = 1V 0.1 0.3 — Open VIM “L” level VIL (2) “H” level IIH “L” level IIL Input resistance Output current Min. VIH (1) Test Condition RIN “H” level IOH (1) “L” level IOL (1) “H” level IOH (2) “L” level IOL (2) — 3-value input terminal AD1, AD2 — CMOS input terminal — 3-value input terminal — HVO-1~-20 output terminal — DO output terminal V V µA kΩ mA mA Clock frequency fCLK CLK max. operating — 5.0 4.0 MHz Clock pulse width twc CLK min. operating 75 60 — ns Data setup time tds 50 40 — ns Data hold time tdh DIN min. operating pulse width 50 40 — ns LS pulse width twl LS min. operating 80 60 — ns CLK-LS delay time tdc CLK→LS delay time 50 40 — ns CLK-DOUT delay time tpd CLK→DOUT delay time CL = 30pF — 120 160 ns Fig. 1 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