參數(shù)資料
型號: W83977CTF-PW
英文描述: PERIPHERAL (MULTIFUNCTION) CONTROLLER
中文描述: 周邊(多功能)控制器
文件頁數(shù): 93/161頁
文件大小: 592K
代理商: W83977CTF-PW
W83977EF/ CTF
PRELIMINARY
Publication Release Date: March 1999
-84 -
Revision A1
7.0 GENERAL PURPOSE I/O
W83977EF/CTF provides 14 Input/Output ports that can be individually configured to perform a
simple basic I/O function or a pre-defined alternate function. These 14 GP I/O ports are divided into
three groups, the first group contains 8 ports, and the second group contains only 6 ports. Each port
in the first group corresponds to a configuration register in logical device 7, and those in the second
group to one in logical device 8. Users can select the I/O ports' functions by independently
programming these configuration registers. Figures 7.1, 7.2, and 7.3 respectively show the GP I/O
port structure of logical device 7 and 8. Right after Power-on reset, these ports default to perform
basic I/O functions.
Figure 7.1
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