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LC75817 데이터시트(PDF) 8 Page - Sanyo Semicon Device |
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LC75817 데이터시트(HTML) 8 Page - Sanyo Semicon Device |
8 / 43 page No. 6144-8/43 LC75817E, 75817W Block Functions • AC (address counter) AC is a counter that provides the addresses used for DCRAM and ADRAM. The address is automatically modified internally, and the LCD display state is retained. • DCRAM (data control RAM) DCRAM is RAM that is used to store display data expressed as 8-bit character codes. (These character codes are converted to 5 × 7, 5 × 8, or 5 × 9 dot matrix character patterns using CGROM or CGRAM.) DCRAM has a capacity of 48 × 8 bits, and can hold 48 characters. The table below lists the correspondence between the 6-bit DCRAM address loaded into AC and the display position on the LCD panel. • When the DCRAM address loaded into AC is 00H. Display digit 1 2 3 4 56789 10 11 12 DCRAM address (hexadecimal) 00 01 02 03 04 05 06 07 08 09 0A 0B However, when the display shift is performed by specifying MDATA, the DCRAM address shifts as shown below. Note: *3. The DCRAM addresses are expressed in hexadecimal. Example: When the DCRAM address is 2EH. Note: *4. 5 × 7 dots ... 12-digit display 5 × 7 dots 5 × 8 dots ... 12-digit display 5 × 8 dots 5 × 9 dots ... 12-digit display 4 × 9 dots Display digit 1 2 3 4 56789 10 11 12 DCRAM address (hexadecimal) 01 02 03 04 05 06 07 08 09 0A 0B 0C (Left shift) Display digit 1 2 3 4 56789 10 11 12 DCRAM address (hexadecimal) 2F 00 01 02 03 04 05 06 07 08 09 0A DCRAM address DA0 DA1 DA2 DA3 DA4 DA5 (Right shift) Least significant bit ↓ LSB DA0 DA1 DA2 DA3 DA4 DA5 011101 Most significant bit ↓ MSB Hexadecimal Hexadecimal |
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