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ST7FLCD1 数据表(PDF) 38 Page - STMicroelectronics |
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ST7FLCD1 数据表(HTML) 38 Page - STMicroelectronics |
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38 / 95 page ![]() I/O Ports ST7FLCD1 38/95 Bit 1 = PA4OVD Port A Bit 4 Overdrive This bit is set and cleared by software. It is used only if Port A Bit 4 is set as an output (PADDR or PWM4). It has no effect if set as an input. 0 2 mA Push-pull Output 1 8 mA Push-pull Output Bit 0 = Reserved. Must be cleared by software. Figure 17: Port A [5:0] Figure 18: Port A [7:6] DR DDR latch latch DR SEL DDR SEL Alternate Output Enable 1 0 1 0 TTL Schmitt Trigger Alternate Output Enable VDD PAD Alternate Output DR DDR latch latch DR SEL DDR SEL Alternate Output Enable 1 0 1 0 TTL Schmitt Trigger Alternate Output Enable VDD alternate input PAD Alternate Output 1 |
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