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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STMPE2403 数据表(PDF) 51 Page - STMicroelectronics |
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STMPE2403 数据表(HTML) 51 Page - STMicroelectronics |
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51 / 63 page  STMPE2403 Keypad controller 51/63 12.7 KPC_ctrl_lsb register 12.8 Data registers The KPC_DATA register contains three bytes of information. The first two bytes store the key coordinates and status of any two keys from the normal key matrix, while the third byte store the status of dedicated keys. KPC_data_byte0 Register Bit 7 654 3 2 1 0 Name DB_0 ~ 5 SCAN Read/Write RW RW RW RW RW RW RW RW Reset Value 0 0 0 0 0 0 0 0 Table 50. Bit description Bit Name Description 7DB_6 0-128ms of de-bounce time 6DB_5 5DB_4 4DB_3 3DB_2 2DB_1 1DB_0 0 SCAN ‘1’ to start scanning; ‘0’ to stop Bit 7 654321 0 Name Up/Down R3R2R1R0C2 C1 C0 Read/Write R RRRRRRR Reset Value 1 111100 0 Table 51. Bit description Bit Name Description 7 Up/Down ‘0’ for key-down, ‘1’ for key-up 6R3 row number of key 1 (valid range : 0-11) 0x1111 for No Key 5R2 4R1 3R0 2C2 column number of key 1 (valid range : 0-7) 1C1 0C0 |
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