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SPEAR1310 数据表(PDF) 41 Page - STMicroelectronics |
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SPEAR1310 数据表(HTML) 41 Page - STMicroelectronics |
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41 / 57 page ![]() SPEAr1310 Keyboard controller (KBD) Doc ID 17528 Rev 4 41/57 27 Keyboard controller (KBD) The GPIO keyboard controller integrated in SPEAr1310 offers a 4-mode input and output port. It provides an 18-bit GPIO, 6x6/9x9/2x2 keyboard functionality, and offers an interface to the industry standard APB bus. 27.1 Main features ● 18-bit general-purpose parallel port (GPIO) with input or output single pin programmability ● 36 (6x6)/81 (9x9)/4 (2x2) key keyboard ● GPIO or keyboard functionality ● Selection of any one of the three keyboard matrices ● AMBA APB interface |
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