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M66004FP Datasheet(PDF) 9 Page - Mitsubishi Electric Semiconductor |
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M66004FP Datasheet(HTML) 9 Page - Mitsubishi Electric Semiconductor |
9 / 14 page 9 MITSUBISHI 〈DIGITAL ASSP〉 M66004SP/FP 16-DIGIT 5X7-SEGMENT VFD CONTROLLER 3. Character display A character (refer to the character code table) which corre- sponds to the character code transmitted from the MCU is displayed as the designated digit. The display digit is designated by the display digit setting command. In case that the display digit designated by this command is set to increase automatically, the display digit is automatically increased by 1. After a character is displayed to the most significant digit, it is displayed to the least significant digit. When the auto increment setting is canceled, the display digit is fixed. Ex. In order to display a character A to digits 14, 15, 16, 1 and 2 in this order and characters A, B and C to digit 8 successively, 12-byte data must be transmitted in the following order. (Display digit length = 16) A (code 4116) B (code 4216) C (code 4316) OPERATION AT RESET When a reset signal is input, the internal state is initialized as shown in Table 4. Table 4 Initial state Contents Display (characters and cursor) Display digit length, dimmer value, display digit, one-digit display frequency, user character RAM state, auto incre- ment setting Serial receive circuit Output port setting Setting after reset All digits: OFF Values immediately before reset are held. Reset Set 1 2 3 4 5 6 7 8 9 10 11 12 Remarks Setting of auto increment Display digit is set to the 14th digit. Transmission of character code Cancel of auto increment setting Display digit is set to the 8th digit. Transmission of character code Display digit – – 14 15 16 1 2 – – 8 8 8 Transmission data F516 ED16 4116 4116 4116 4116 4116 F416 E716 4116 4216 4316 4. All-digit display ON/OFF All digits are simultaneously lighted or put off by inputting all- digit display ON command or all-digit display OFF command. When all-digit display ON command is transmitted, all digits including a cursor and all segments are lighted. Therefore, this command can be used for the lamp test. When all-digit display ON setting is canceled (normal opera- tion mode is selected), all digits are displayed according to the setting before all-digit display ON operation. It is also possible to set the next character to the designated digit dur- ing the all-digit display ON operation. When all-digit display OFF command is transmitted, all digits including a cursor are put off. When all-digit display OFF set- ting is canceled (normal operation mode is selected), all dig- its are displayed according to the setting before all-digit display OFF operation. It is also possible to set the next char- acter to the designated digit in the all-digit display OFF state. |
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