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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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HT85F2240 bảng dữ liệu(PDF) 95 Page - Holtek Semiconductor Inc |
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HT85F2240 bảng dữ liệu(HTML) 95 Page - Holtek Semiconductor Inc |
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95 / 147 page  Rev. 1.10 9� of 147 ���� �1� �01� A/D Flash 8051 Core Low Pin Count MCU HT85F2230/HT85F2240 Register Description This section provides a description of all the registers associated with I/O setup and control. The following table gives a summary of all associated I/O registers, which will be described in detail later. I/O Register List Register Name Bit 7 6 5 4 3 2 1 0 P0WAKE P07WU P06WU P0�WU P04WU P0�WU P0�WU P01WU P00WU P0 P0.7 P0.6 P0.� P0.4 P0.� P0.� P0.1 P0.0 P0M0 P0M0.7 P0M0.6 P0M0.� P0M0.4 P0M0.� P0M0.� P0M0.1 P0M0.0 P0M1 P0M1.7 P0M1.6 P0M1.� P0M1.4 P0M1.� P0M1.� P0M1.1 P0M1.0 P1 — — — P1.4 P1.� P1.� P1.1 P1.0 P1M0 — — — P1M0.4 P1M0.� P1M0.� P1M0.1 P1M0.0 P1M1 — — — P1M1.4 P1M1.� P1M1.� P1M1.1 P1M1.0 P� P�.7 P�.6 P�.� P�.4 P�.� P�.� P�.1 P�.0 P�M0 P�M0.7 P�M0.6 P�M0.� P�M0.4 P�M0.� P�M0.� P�M0.1 P�M0.0 P�M1 P�M1.7 P�M1.6 P�M1.� P�M1.4 P�M1.� P�M1.� P�M1.1 P�M1.0 SRCR — — — — SRCR.� SRCR.� SRCR.1 SRCR.0 Each Port has its own data register, known as P0, P1 and P3, which are used to control the input and output I/O pin data. These registers read input pin data or write output pin data on the selected I/O pin. For I/O pins setup as outputs a write operation to these registers will setup either a high or low level on the corresponding pin. For I/O pins setup as inputs a read operation to these registers will read the actual logic level on the corresponding pin. P0 Register SFR Address: 80h Bit 7 6 5 4 3 2 1 0 Name P0.7 P0.6 P0.� P0.4 P0.� P0.� P0.1 P0.0 R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 1 1 1 1 1 1 1 1 P1 Register SFR Address: 90h Bit 7 6 5 4 3 2 1 0 Name P1.7 P1.6 P1.� P1.4 P1.� P1.� P1.1 P1.0 R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 1 1 1 1 1 1 1 1 |
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