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參數(shù)資料
| 型號： | UPD6466GT |
| 廠商： | NEC Corp. |
| 英文描述： | ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER, 12-ROW, 24-COLUMN, CAMERA-CONTAINED VCR |
| 中文描述： | 屏幕字符顯示的CMOS集成電路512-CHARACTER，12列，24列，攝像機(jī)，錄像機(jī)所載 |
| 文件頁數(shù)： | 52/70頁 |
| 文件大?。?/td> | 494K |
| 代理商： | UPD6466GT |
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52
μ
PD6466
5. CHARACTER PATTERNS
The
μ
PD6466 can display 512 character patterns, including alphanumeric characters, Kanji characters, and
symbols, which are stored in the character generator ROM. Each pattern in the character generator ROM can be
modified by specifying a mask code option. However, the Display Off Data at character address FEH and 2-byte
continuous command end code at FFH cannot be modified because they are fixed in both high-order (1) and low-order
(0) banks. Therefore, no character pattern can be input at these addresses.
When none of the 12
×
18 dots are filled for a character pattern at addresses 000H to 0FDH and 100H to 1FDH,
the character pattern is called Blank Data. Character address FEH in both banks is called Display Off Data. Blank
Data and Display Off Data are represented in the same way (with no dots filled) in character patterns (of the
μ
PD6466GS-001) shown on the following pages, but they are different as follows:
Character Code
Display of Character Area in Each Background Mode
No background
Minimum background
Overall background
Blank Data
Displays image
Displays background
Displays background
Display Off Data
Displays image
Displays image only
(without background)
Displays image only
(without background)
You cannot specify Display Off Data for addresses other than FEH when using a mask code option. Blank Data,
however, can be specified at any address from 000H to 0FDH or 100H to 1FDH (address 0FFH and 1FFH cannot
be used because they are fixed to the 2-byte continuous command end code).
The character patterns of the
μ
PD6466GS-001/GT-201 (NEC’s standard model) are shown on the following pages.
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