APPLICATION NOTE VACUUM FLUORESCENT DISPLAY MODULE

Transcription

1 AN-E-3190 APPLICATION NOTE VACUUM FLUORESCENT DISPLAY MODULE GRAPHIC DISPLAY MODULE GP1058A02A GENERAL DESCRIPTION FUTABA GP1058A02A is a graphic display module using a FUTABA VFD. Consisting of a VFD, display driver, a control circuit, an interface circuit, and a power supply. The character generator is built in and a Japanese character (font of 24 24) etc. can be displayed by transmitting the Japanese character ROM code by RS-232C. Moreover, it is also possible for a user font to display.

2 ! Important Safety Notice Please read this note carefully before using the product. Warning The module should be disconnected from the power supply before handling. The power supply should be switched off before connecting or disconnecting the power or interface cables. The module contains electronic components that generate high voltages (approx.120v) which may cause an electrical shock when touched. Do not touch the electronic components of the module with any metal objects. The VFD used on the module is made of glass and should be handled with care. When handling the VFD, it is recommended that cotton gloves be used. The module is equipped with a circuit protection fuse. Under no circumstances should the module be modified or repaired. Any unauthorized modifications or repairs will invalidate the product warranty. The module should be abolished as the factory waste. AN-E-3190 [Important Safety Notice]

3 CONTENTS PAGE 1. FEATURES 1 2. GENERAL DESCRIPTION 2-1. DIMENSIONS, WEIGHT SPECIFICATIONS OF THE DISPLAY PANEL ENVIRONMENT CONDITIONS ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONDITION ELECTRICAL CHARACTERISTICS 2 3. BASIC FUNCTION 3-1. COMMUNICATION FRAME COMPOSITION 2, COMMAND 3, COMMUNICATION PROTOCOL 4~ MESSAGE DATA FORMAT 7~ COMPOSITION OF 1 BYTE COMMUNICATION TIME INTERFACE CONNECTION 4-1. INTERFACE CONFIGURATION PIN CONNECTION 12 FIGURE-1 OUTER DIMENSION 13 FIGURE-1 CIRCUIT BLOCK DIAGRAM 14 APPENDIX Character Code Table 15~22 6. WARRANTY CAUTIONS FOR OPERATION 23 AN-E-3190 [CONTENTS]

4 1. FEATURES 1-1. High quality and long life can be achieved with FUTABA VFD Being equipped with VFD driver ICs, CPU, a controller, character generator ROM, RS-232C interface IC and PSU By the use of RS-232C, a data can be readily communicated A communication form corresponds to 1 to 1 by the RS-232C bi-directional communication system. Access speed is 19200bps. 9600bps selection is also possible It is possible to display a font by carrying Japanese character ROM (the first level of JIS, the second level of JIS, and non- Japanese character), and transmitting the Japanese character ROM code The user font function which can display arbitrary display patterns from the outside is also equipped. 2. GENERAL DESCRIPTION 2-1. DIMENSIONS, WEIGHT (Refer to FIGURE-1) Table-1 Item Specification Unit (W) Outer dimensions (H) mm (T) 43 MAX. Weight Approx.1400 g 2-2. SPECIFICATIONS OF THE DISPLAY PANEL Table-2 Item Specification Unit Display Area mm Number of Dots Dot Dot Size mm Dot Pitch mm Color Illumination Green(λp 505nm) - Luminance 250 TYP. cd/m 2 (Note) By using a filter, uniform color ranging from blue to orange (including white) can be obtained ENVIRONMENT CONDITIONS Table-3 Item Symbo Min. Max. Unit Operation Temperature Topr Storage Temperature Tstg Operating Humidity Hopr % Storage Humidity Hstg % Vibration (10 to 55 Hz) 2 G Shock 40 G Note) Avoid operations and or storage in moist environmental conditions. AN-E-3190 [1/23]

5 2-4. ABSOLUTE MAXIMUM RATINGS Table-4 Item Symbol Min. Max. Unit Supply Voltage Vcc Vdc Vcc Vdc 2-5. RECOMMENDED OPERATING CONDITION Table-5 Item Symbol Min. Typ. Max. Unit Supply Voltage Vcc V Vcc V Data 1 (MARK) V MARK V Data 0 (SPACE) V SPACE 5 14 V 2-6. ELECTRICAL CHARACTERISTICS Table-6 Item Symbol Condition Min. Typ. Max. Unit Icc A Supply Current Vcc1=5.0Vdc Icc A Vcc2=24.0Vdc Power Consumption All dots on W Luminance L cd/m 2 Note1) For the electrical characteristics of the input signal, refer to the standard specified for RS-232C. Note2) The surge current can be approx.5 times of specified maximum supply current power on. 3. BASIC FUNCTION 3-1. COMMUNICATION Communication between a host system and a module is carried out by RS-232C FRAME COMPOSITION Communication between a host and a module is performed using a command frame, a data frame, and a response frame. A command frame consists of a [Address], a [Frame No.], a [Command], [The number of frames], [SUM], and [END]. A data frame consists of a [Address], a [Frame No.], a [Command], a [Message], [SUM], and [END]. A response frame consists of a [Address], a [Frame No.], [Response], a [Dummy], [SUM], and [END]. Whenever it receives a command or a data frame, it is answered in a response frame. In a response frame, if there is no error during reception, ACK (C2H) will be returned, and NCK (C3H, C4H) will be returned if there is an error. With a [Command], the kind of head frame is distinguished, and when the frame which does not suit a protocol is judged, responding in the frame error NAK (C3H) after timeout error generating. When a message does not fit in one data frame, message information will be sent in several steps. (1) COMMAND FRAME Frame No. The number END Address Command SUM 1 byte of frames 1 byte 1 byte 1 byte 2 bytes "" fixed 1 byte "" fixed Don't care "" fixed Refer to Command code (Table-7 and Table-8) AN-E-3190 [2/23]

6 It is the number of data frame following this command, when one of the command code 03H/04H/05H is selected. It is set in case of other commands. The value of arithmetic checksum which added all data from [Address] to [the number of frames]. It represents as 2 bytes data and transmits in order of the upper byte and then a lower byte. "" fixed (2) DATA FRAME END Address Frame No. Command Message SUM 1 byte 1 byte 1 byte 1 byte 256 bytes 2 bytes "" fixed Don't care It is set incremented data for every display data frame from 01H. Refer to Command code (Table-7 and Table-8) 256 byte fixed. Intact data is set to "FFH" The value of arithmetic checksum which added all data from [Address] to [the number of frames]. It represents as 2 bytes data and transmits in order of the upper byte and then a lower byte. "" fixed (3) RESPONSE FRAME Response Address Frame No. 1 byte Dummy SUM END 1 byte 1 byte ACK:"C2H" 1 byte 2 bytes 1 byte "" fixed NAK:"C3H, C4H" Don't care The frame No. of the received frame ACK "C2H" NAK "C3H" When data is not in agreement "C4H" In case of a timeout (In case of the gap of between bytes or between frames is over timeout time) MSGEND "C0H" Stop states with display of message takes a round "" fixed The value of arithmetic checksum which added all data from [Address] to [the number of frames]. It represents as 2 bytes data and transmits in order of the upper byte and then a lower byte. "" fixed 3-3. COMMAND (1) WRITE-IN MESSAGE CODE When transmitting a message, the code of the following table is first inputted into the [command] part of a command frame, and the number of data frames is inputted into a [frame] part, and it transmits. Next, the data is transmitted by the data frame. Table-7 Code Description 03H It displays the transmitted data on the last of data while displaying. 04H It displays the transmitted data immediately. A display is not changed although the transmitted data is stored in RAM. 05H Separately, a display is changed with a display screen change command. AN-E-3190 [3/23]

7 (2) DISPLAY CONTROL CODE When transmitting this code, the code of the following table is inputted into the [command] part of a command frame, and "" is inputted into a [frame] part and it transmits to it. Since the default serves as a setup of , the number of pixels should transmit the number setting command of pixels (25H:336 24) at the beginning of after a power supply injection. Table-8 Code Function Note 10H Display ON Default 11H Display OFF 12H Starts scrolling Default 13H Stops scrolling 14H Display data is all clear 15H Makes display setup default 17H Changes display screen 18H The head of display data is pulled out 1CH Checks the state of operating display During scrolling, it is responded C2 During stops scrolling, it is responded C2 25H The number of pixels is set as H The display state of a blink command is made to repeat displaying on Default 31H and off. The display state of a blink command is made to exchange the screen of normal and reversed display. 41H Time of timeout set 0.5s 42H Time of timeout set 1.0s 43H Time of timeout set 2.0s 44H Time of timeout set 3.0s 45H Time of timeout set 5.0s Default 3-4. COMMUNICATION PROTOCOL (1) Transmission of display data The case where two characters of " "and " " are transmitted by "immediate display" is shown below. In case of receive succession, entering ACK (C2H) in the part of a response part. In case of receive failure, entering NAK (C3H, C4H) in the part of a response part. When NAK is answered, please redo from after progress more than the timeout time set up. Transmitting the command frame Code of the immediate display "04H" is inputted into a command part. Since display data is 4 bytes (2 bytes per character), it transmits "01H" to the number of frames part. Address Frame No. Command 04H The number of frames 01H SUM, 05H END Transmitting the response frame Address Frame No. Response C2H Dummy SUM, C2H END AN-E-3190 [4/23]

8 Transmitting the data frame Address Frame No. 01H Command Message 256 bytes SUM FCH, 47H END A [message] frame is as follows. 41H,02H,FAH,05H,FFH,FFH FFH,FFH 252 bytes Code of character generator ROM transmits in order of an upper byte and a lower byte. Responding the response frame Address Frame No. 01H Response C2H Dummy SUM,C3H When display data is more than 256 bytes, and are repeated. END Host Module Command Frame 05H 01H 04H Data Frame SUM L SUMH C2H Message C2H 01H Response Frame (ACK) 01H C2H C3H Response Frame (ACK) Data Frame SUML SUMH Message 02H 02H C2H C4H Response Frame (ACK) Data Frame SUML SUMH Message **H **H C2H SUMH SUML Response Frame (ACK) The exchange of a data frame and a response frame is repeated with the length of the message which transmits. (**H is arbitrary values.) AN-E-3190 [5/23]

9 (2) Transmitting of command data In case Display ON command 10H is transmitted, the frame procedure is shown below. When receiving data successfully. It is responded to send the response frame with ACK (C2H) data in [Response] port back to a Host. If not, it is responded it with NAK (C3H,C4H). In case NAK is answered, the following step shall be required again until receiving ACK data. Transmitting the command frame Code of the Display ON "10H" is inputted into a command part. With no display data, shall be in putted into [The number of frames] part. Address Frame No. Command 10H The number of frames SUM, 10H END Responding the response frame Address Frame No. Response C2H Dummy SUM, C2H END Host Module Command Frame 10H 10H C2H C2H Response Frame (ACK) AN-E-3190 [6/23]

10 3-5. Message Data Format The storage area of message data is 4096 bytes. Since one character consists of 2 bytes, it can display a maximum of 2048 characters at once. (A command code and user font data are also contained in 2048 characters.) Each command becomes as it is shown in the following table -10. For details, please refer to P10-P13. A message data code should consist of 2 byte codes, and should transmit in order of an upper byte and a lower byte. Table-9 Command Code Note Character display ****H Expresses the address of character ROM. Horizontal display 81 Vertical display 82 Blinking scroll 83 Stops blinking scroll 84 Displays character of double size 85 Release from character of double size 86 Stops scrolling 88**H **=01 99(s) Displays the open curtain A character sequence to indicate by curtain 89 open is written in between 89 and 89FFH Stops displaying the open curtain Displays the close curtain Stops displaying the close curtain Scrolling speed Scroll direction Scroll direction Blinking Stop blinking Line space User font User font Scroll direction Stops scrolling direction Scrolling direction Stops scrolling direction Centering display Stops centering display 89FFH A character sequence to indicate by curtain 8A close is written in between 89 and 89FFH 8AFFH 8B0*H *=0(max) 4(min) 8C 8D A character sequence to indicate by blinking is 8E0*H written in between 8E0*H and 8EFFH (*=1 5 times) 8EFFH 8F**H **=01 15 line 9003H 9004H The character sequence to indicate by scroll is written in between 91**H and 91FFH 91**H **= Beginning place (the number of half size of character) 91FFH The character sequence to indicate by scroll is written in between 92**H and 92FFH 92**H **= Beginning place (the number of half size of character) 92FFH The character sequence to indicate by centering 93 is written in between 93 and 93FFH 93FFH Note) A default setup is the left from a horizontal display, the scroll speed 1, release from blinking scroll, the release from double size of character,and scroll direction. AN-E-3190 [7/23]

11 (1) Conversion table from JIS Code to a Character Code (****H) The following indicates the data exchange from JIS code to a character code. Upper byte Lower byte Classification b7 b6 b5 d8 d7 d6 d5 d4 d3 d2 d1 c8 c7 c6 c5 c4 c3 c2 c1 Alphabet or Numerals a7 a6 b3 b2 b1 0 0 a5 a4 a3 a2 a1 Kanji (level 1) b7 b4 b3 b2 b1 a7 a6 a5 a4 a3 a2 a1 Kanji (level 1) b7 b4 b3 b2 b1 a7 a6 a5 a4 a3 a2 a1 Kanji (level 2) b6 b4 b3 b2 b1 a7 a6 a5 a4 a3 a2 a1 Kanji (level 2) b6 b4 b3 b2 b1 a7 a6 a5 a4 a3 a2 a1 Kanji (level 2) a7 a6 b3 b2 b1 0 0 a5 a4 a3 a2 a1 Ruby * a7 a6 1 b3 b1 0 0 a5 a4 a3 a2 a1 Character flag ("1"=hiragana, "0"=katakana) Size flag ("1"=half size, "0"=full size) Command flag ("1"=command, "0"=character) note) b7 b1 is first byte of JIS code, a7 a1 is second byte of JIS code. d5 d1 and c8 c1 is character code. *1:alphabet, numerals, katakana, hiragana Command flag: When you use a character display, please set "0." (2) Horizontal display (81) After the code 81, subsequent texts will be made a horizontal display. It is a default setup. (3) Vertical display (82) After the code 82, subsequent texts will be made a vertical display. In a vertical display, 90 degrees of all characters rotate counterclockwise, and they display. However, the horizontal display font corresponding to bold area of font table in page 15/23 of a font table turns into a corresponded vertical character font automatically by setting up a vertical character display code. (4) Blinking scroll (83) After the code 83, subsequent texts will indicate by blinking scroll. Blinking speed is changed in accordance with a scroll speed. (5) Stops blinking scroll (84) After the code 84, blinking scrolling will stop and subsequent texts will be returned to an ordinary scroll display. It is default setup. (6) Displays character of double size (85) After the code 85, subsequent texts will indicate by character of double size. If are specified as the horizontal character display, it will indicate by horizontal character of double size. If are specified as the vertical character display, it will indicate by vertical character of double size. (7) Release from double size of character (86) After the code 86, a double size of character will be canceled and subsequent texts will be returned to ordinary character size. It is a default setup. AN-E-3190 [8/23]

12 (8) Stops scrolling (88**H) After the code 88**H, scrolling will be stopped for the appointed seconds (**: 01-99) at the state which displayed the character written before this code. (9) Displays the open curtain (89 89FFH) A character sequence code writes in between open curtain code 89 and open curtain end code 89FFH. The specified character sequence is displayed as curtain opens from the central part on right and left. After an open curtain end, returns to a scroll display. If a specification character sequence is less than the number of pixels, centering of the character sequence will be carried out, and an open curtain will be started. In exceeding the number of pixels, the portion exceeding the number of pixels is disregarded and serves as the usual horizontal scroll display. (10) Stops displaying the close curtain (8A 8AFFH) A character sequence code writes in between open curtain code 8A and open curtain end code 8AFFH. The specified character sequence is displayed as curtain closes from the central part. After a close curtain end, returns to a scroll display. If a specification character sequence is less than the number of pixels, centering of the character sequence will be carried out, and a close curtain will be started. In exceeding the number of pixels, the portion exceeding the number of pixels is disregarded and serves as the usual horizontal scroll display. (11) Scrolling speed (8B0*H) Scroll speed can be changed by scroll speed code 8B0*H (*=0-4). However "0" ultra high-speed serves as only the mode of horizontal scrolling. A default setup is high speed "1". 0: ultra high-speed, 1: high-speed, 2: middle high-speed, 3: middle-speed, 4: low-speed (12) Scrolling direction (8C) After code 8C, the scroll direction will be set from the right to the left. It is a default setup. (13) Scrolling direction (8D) After code 8D, the scroll direction will be set from the left to the right. (14) Blinking (8E0*H 8EFFH) A character sequence code is written in between blink display code 8E0*H and blink display end code 8EFFH. The specified character sequence stops in the central part, and gives a blink indication only of the *(1-5) time. After a blinking end, returns to a scroll display. If a specification character sequence is less than the number of pixels, centering of the character sequence will be carried out, and a blinking will be started. In exceeding the number of pixels, the portion exceeding the number of pixels is disregarded and serves as the usual horizontal scroll display. (15) Line space (8F0*H) After the code 8F0*H, the number *(1(1) -15(F)) line space of specification will be inserted. A line space is a space for 1 dot of vertical lines. AN-E-3190 [9/23]

13 (16) User font (900*H) A user font can be expressed as user font code 900*H and user font data. By changing *, the user font of dots and dots can be displayed. If the number of bytes is mistaken, an unexpected character may be displayed or the fault of neither a subsequent display nor a command being executed correctly may arise. (*=3~4) 3: bytes 4: bytes The order of user font data is shown below MSB LSB MSB LSB MSB LSB (17) Scroll direction (91**H 91FFH) A character sequence code is written in between scroll code 91**H and scroll end code 91FFH. It counts from a screen left end and it is specified to be ** part from the half-size character of how many characters a character sequence is displayed. The specified character sequence appears from the bottom. After scroll display ending from the bottom to upper, it returns to a horizontal scroll display. Although a specification character sequence can be specified from one character to two or more characters, in the case of two or more characters, scrolling may be awkward. AN-E-3190 [10/23]

14 (18) Scroll direction (92**H 92FFH) A character sequence code is written in between scroll code 92**H and scroll end code 92FFH. It counts from a screen left end and it is specified to be ** part from the half-size character of how many characters a character sequence is displayed. The specified character sequence appears from the upper. After scroll display ending from the upper to bottom, it returns to a horizontal scroll display. Although a specification character sequence can be specified from one character to two or more characters, in the case of two or more characters, scrolling may be awkward. (19) Centering display (93 93FFH) A character sequence code is written in between centering display code 93 and centering display end code 93FFH. If a specification character sequence is less than the number of pixels, centering of the character sequence will be carried out. In exceeding the number of pixels, it does not indicate by centering COMPOSITION OF 1 BYTE Please set up composition of 1 byte of each portion in a frame as follows. Start Stop Table-10 Name Setting 1 Start bit 1 bit 2 Characters 8 bits 3 Parity bit None 4 Stop bit 1 bit 5 Baud rate 19200bps, 9600bps Note) Initial setting 19200bps Refer to the 4th clause (P13) for a setup of baud rate COMMUNICATION TIME When a master performs communication of those other than this rule, a slave causes a receipt error and repeals the data received till then. Therefore, when a receipt error arises, please transmit message data again from the start. The following frame is transmitted after ACK reception. Table-11 Min. Max. The time gap between bytes (tb) 300µ sec 5 sec The time gap between frames (tf) 300µ sec 5 sec The time gap between massages (tm) 300m sec Note) One message is the total number of bytes of the [message] part of a data frame, and is a maximum of 4096 bytes. (Including the end code FFFFH) The maximum time is based on a timeout setting value. (A default is 5sec (45H)) AN-E-3190 [11/23]

15 4. INTERFACE CONNECTION 4-1. INTERFACE CONFIGURATION Item Signal level Baud rate Stop bit Parity bit Note) Initial setting 19200bps. Table-12 Specification RS-232C 19200bps, 9600bps bit None In the table explained below, "-" expresses " no mounting of 0-ohm resister", and "O" expresses "mounting of 0-ohm resister." Initial setting is 19200bps. Table-13 Baud rate J9 J bps 9600bps 5. PIN CONNECTION (1) CONNECTOR TO POWER SOURCE (CN1) Connector: A (Molex) Applicable housing: , (Molex) (2) CONNECTOR TO SIGNALS (CN2) Connector: A-X (Molex) Applicable housing: (Molex) Table-14 Pin No. Signal 1 GND 2 GND 3 Vcc2 (+24V) 4 Vcc1 (+5V) Table-15 Pin No. Signal 1 NC 2 RXD 3 TXD 4 RTS 5 CTS 6 GND AN-E-3190 [12/23]

16 GP1058A02A OUTER DIMENSION FIGURE-1 AN-E-3190 [13/23]

17 GP1058A02A CIRCUIT BLOCK DIAGRAM FIGURE-2 GND +5V +24V GND OSC RXD TXD RTS CTS RS-232C Logic M65514 S-RAM 64K bits CPU OSC DC/DC CONVERTER ebb ecc Ef P-ROM C/G 256K bits RO M S-RA 8k BYTES ebb ecc GRID DRIVER IC GRAPHIC DISPLAY Ef Control ASIC ANODE DRIVER IC LAT CN2 SIGNAL CN1 POWER SUPPLY AN-E-3190 [14/23]

18 Character Code Table (1) Appendix-1/8 AN-E-3190 [15/23]

19 Character Code Table (2) Appendix-2/8 AN-E-3190 [16/23]

20 Character Code Table (3) Appendix-3/8 AN-E-3190 [17/23]

21 Character Code Table (4) Appendix-4/8 AN-E-3190 [18/23]

22 Character Code Table (5) Appendix-5/8 AN-E-3190 [19/23]

23 Character Code Table (6) Appendix-6/8 AN-E-3190 [20/23]

24 Character Code Table (7) Appendix-7/8 AN-E-3190 [21/23]

25 Character Code Table (8) Appendix-8/8 AN-E-3190 [22/23]

26 6. WARRANTY This display module is guaranteed for 1 year after the shipment from FUTABA. 7. CAUTIONS FOR OPERATION 7-1. Applying lower voltage than the specified may cause non activation for selected pixels. Conversely, higher voltage may cause non-selected pixel to be activated. If such a phenomenon is observed, check the voltage level of the power supply The DC/DC converter generates approximately 115Vdc, avoid touching it with bare hands, or to other circuits Avoid using the module where excessive noise interface is expected. Noise affects the interface signal and causes improper operation. Keep the length of the interface cable less than 30cm. (When the longer cable is required, please confirm there is no noise affection.) 7-4. When power is turned off, the capacitor will not discharge immediately. Avoid touching IC and others. The shorting of the mounted components within 30 sec., after power off, may cause damage When fixed pattern is displayed for a long time, you may see uneven luminance. It is recommended to change the display patterns sometimes in order to keep best display quality DC/DC converter is equipped on the module, the surge current may be approximately 5 times the specified supply current at the power on. REMARKS: The specification is subject to change without prior notice. Your consultation with FUTABA sales office is recommended for the use of this module. AN-E-3190 [23/23]