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XC9223B081AR

XC9223B081AR资料
XC9223B081AR
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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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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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