參數(shù)資料
型號: Q67126-C2042
廠商: SIEMENS AG
元件分類: 8位微控制器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8位CMOS微控制器
文件頁數(shù): 26/65頁
文件大?。?/td> 427K
代理商: Q67126-C2042
Semiconductor Group
26
1997-10-01
C540U
C541U
Digital I/O Ports
The C540U/C541U in the P-SDIP-52 package has four 8-bit I/O ports. In the P-LCC-44 package
port 1 is a 6-bit I/O port only. Port 0 is an open-drain bidirectional I/O port, while ports 1 to 3 are
quasi-bidirectional I/O ports with internal pullup resistors. That means, when configured as inputs,
ports 1 to 3 will be pulled high and will source current when externally pulled low. Port 0 will float
when configured as input.
The output drivers of port 0 and 2 and the input buffers of port 0 are also used for accessing external
memory. In this application, port 0 outputs the low byte of the external memory address, time
multiplexed with the byte being written or read. Port 2 outputs the high byte of the external memory
address when the address is 16 bits wide. Otherwise, the port 2 pins continue emitting the P2 SFR
contents. In this function, port 0 is not an open-drain port, but uses a strong internal pullup FET.
Two port lines of port 1 (P1.0/LED0, P1.1/LED1) and one port line of port 3 (P3.0/LED2) have the
capability of driving external LEDs in the output low state.
相關(guān)PDF資料
PDF描述
Q67127-D970 8-Bit CMOS Microcontroller
Q67127-C970 High Speed CMOS Logic Hex Buffers/Line Drivers with Non-Inverting 3-State Outputs 16-PDIP -55 to 125
Q67127-C1009 8-Bit CMOS Microcontroller
Q67127-C1014 8-Bit CMOS Microcontroller
Q67127-D1009 8-Bit CMOS Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
Q67126-C2088 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-SM-CAN CONTROLLER
Q67127-C1009 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller
Q67127-C1014 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller
Q67127-C1030 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller
Q67127-C1031 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller