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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ST7263BEx 데이터시트(PDF) 51 Page - STMicroelectronics |
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ST7263BEx 데이터시트(HTML) 51 Page - STMicroelectronics |
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51 / 186 page  ST7263Bxx I/O ports Doc ID 7516 Rev 8 51/186 . Data Direction register (PxDDR) Address Port A Data Direction register (PADDR): 0001h Port B Data Direction register (PBDDR): 0003h Port C Data Direction register (PCDDR): 0005h Port D Data Direction register (PDDDR): 0007h Reset value Port A: 0000 0000 (00h) Port B: 0000 0000 (00h) Port C: 1111 x000 (FXh) Port D: 0000 0000 (00h) Note: For Port C, unused bits (7-3) are not accessible . 7 0 D7 D6 D5 D4 D3 D2 D1 D0 Read/write [7:0] D[7:0] Data register 8 bits. 7 0 DD7 DD6 DD5 DD4 DD3 DD2 DD1 DD0 Read/write [7:0]D D[7:0] Data Direction register 8 bits. The DDR register gives the input/output direction configuration of the pins. Each bit is set and cleared by software. 0: input mode 1: output mode Table 16. I/O ports register map Address (Hex.) Register Label 7 6 543 2 1 0 00 PADR MSB LSB 01 PADDR MSB LSB 02 PBDR MSB LSB 03 PBDDR MSB LSB 04 PCDR MSB LSB 05 PCDDR MSB LSB 06 PDDR MSB LSB 07 PDDDR MSB LSB |
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