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BT818Q-R データシート(PDF) 23 Page - Bridgetek Pte Ltd. |
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BT818Q-R データシート(HTML) 23 Page - Bridgetek Pte Ltd. |
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23 / 59 page  Copyright © Bridgetek Pte Ltd 23 BT817/8 Advanced Embedded Video Engine Datasheet Version 1.1 Document No.: BRT_000302 Clearance No.: BRT#154 Font Index => 16/ 18 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 117 U 8 5 7 9 10 14 18 8 9 12 14 17 24 31 41 52 118 V 8 6 7 8 10 13 16 7 9 11 12 16 21 27 36 46 119 W 8 8 10 12 14 18 23 11 13 16 18 23 32 41 54 70 120 X 8 6 7 8 10 12 16 7 9 11 12 16 21 27 36 46 121 Y 8 5 7 8 10 13 16 7 9 11 12 16 21 27 36 46 122 Z 8 5 7 8 9 12 16 8 9 11 12 15 22 27 36 46 123 { 8 3 5 6 6 8 11 5 6 8 8 11 15 18 24 31 124 | 8 3 3 4 5 6 9 3 4 5 6 7 10 14 18 23 125 } 8 3 5 6 6 8 11 5 6 7 9 10 15 18 24 31 126 ~ 8 7 8 10 10 14 19 10 11 14 15 21 29 36 47 63 127 DEL 8 0 0 0 0 0 0 3 4 5 6 5 10 13 18 23 Table 4-9 ROM font ASCII character width in pixels 128 Ç 144 É 160 á 176 ░ 192 └ 208 ╨ 224 α 240 Ξ 129 ü 145 æ 161 í 177 ▒ 193 ┴ 209 ╤ 225 ß 241 ± 130 é 146 Æ 162 ó 178 ▓ 194 ┬ 210 ╥ 226 Γ 242 ≥ 131 â 147 ô 163 ú 179 │ 195 ├ 211 ╙ 227 ∏ 243 ≤ 132 ä 148 ö 164 ñ 180 ┤ 196 ─ 212 ╘ 228 Σ 244 ⌠ 133 à 149 ò 165 Ñ 181 ╡ 197 ┼ 213 ╒ 229 σ 245 ⌡ 134 å 150 û 166 ª 182 ╢ 198 ╞ 214 ╓ 230 µ 246 ÷ 135 ç 151 ù 167 º 183 ╖ 199 ╟ 215 ╫ 231 τ 247 ≈ 136 ê 152 ÿ 168 ¿ 184 ╕ 200 ╚ 216 ╪ 232 Φ 248 ° 137 ë 153 Ö 169 ⌐ 185 ╣ 201 ╔ 217 ┘ 233 θ 249 • 138 è 154 Ü 170 ¬ 186 ║ 202 ╩ 218 ┌ 234 Ω 250 · 139 ï 155 ₵ 171 ½ 187 ╗ 203 ╦ 219 █ 235 δ 251 √ 140 î 156 £ 172 ¼ 188 ╝ 204 ╠ 220 ▄ 236 ω 252 ⁿ 141 ì 157 ¥ 173 ¡ 189 ╜ 205 ═ 221 ▌ 237 φ 253 ² 142 Ä 158 Pt 174 « 190 ╛ 206 ╬ 222 ▐ 238 Ɛ 254 ■ 143 Å 159 ƒ 175 » 191 ┐ 207 ╧ 223 ▀ 239 Π 255 nbsp Table 4-10 ROM Font Extended ASCII Characters Note 1: Font 17 and 19 are extended ASCII characters, with width fixed at 8 pixels for all characters. Note 2: All fonts included in the BT817/8 ROM are widely available to the market-place for general usage. 4.4 SPI NOR Flash Interface The BT817/8 implements a SPI master to connect to external SPI NOR Flash. Graphics assets such as Unicode fonts and images can be stored in the flash memory. The BT817/8 graphics engine can fetch these graphics assets directly without going through external host MCU, thus significantly offloading the host MCU from feeding display contents. The BT817/8 supports various NOR flash memory device from different vendors such as Cypress, Macronix, Winbond, Micron, ISSI and Gigadevice. The flash shall support XIP operation. The interface will work at system clock speed at 4 bit mode, providing the maximum data read throughput of 288 Mbit/s. |
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