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| XC9223B081AR资料 | |
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XC9223B081AR PDF Download |
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File Size : 116 KB
Manufacturer:TOREX Description:T2EX (P1.1): Timer/Counter 2 Reload/Capture/Direction Control Port 2: Port 2 is an 8-bit bidirectional I/O port with internal pull-ups. Port 2 pins that have 1s written to them are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 2 pins that are externally pulled low will source current because of the internal pull-ups. Port 2 emits the high-order address byte during fetches from external program memory and during accesses to external data memory that use 16-bit addresses (MOVX @DPTR).In this application, it uses strong internal pull-ups emitting 1s. During accesses to external data memory that use 8-bit addresses (MOVX @Ri), port 2 emits the contents of the P2 SFR. Some Port 2 pins receive the high order address bits during EPROM programming and verification: P2.0 to P2.5 for A8 to A13 Port 3: Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 pins that have 1s written to them are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 3 pins that are externally pulled low will source current because of the internal pull-ups. Some Port 3 pin P3.4 receive the high order address bits during EPROM programming and verification for TS8xC58X2 devices. Port 3 also serves the special features of the 80C51 family, as listed below. RXD (P3.0): Serial input port |
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| 1PCS | 100PCS | 1K | 10K | ||
| 价 格 | |||||
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型 号：XC9223B081AR 厂 家：TOREX 封 装：SMD 批 号：09+ 数 量：1000 说 明：原装现货 |
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运 费： 所在地： 新旧程度： |
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| 联系人：林小姐 |
| 电 话：0755-83041767,82716726 |
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| 公司地址： 深圳市福田区华强北佳和大厦4C143 |
