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TMP93CS32F bảng dữ liệu(PDF) 49 Page - Toshiba Semiconductor

tên linh kiện TMP93CS32F
Giải thích chi tiết về linh kiện  CMOS 16-Bit Microcontroller
PDF  180 Pages
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nhà sản xuất  TOSHIBA [Toshiba Semiconductor]
Trang chủ  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMP93CS32F bảng dữ liệu(HTML) 49 Page - Toshiba Semiconductor

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TMP93CS32
2004-02-10
93CS32-47
3.5.3
Port 2 (P20 to P27)
Port 2 is an 8-bit general-purpose I/O port. I/O can be set on bit basis using the control
register P2CR and function register P2FC. All bits of the output latch P2 is set to “1” by
reset, and all bits of P2CR and P2FC are cleared to “0”. Port 2 becomes the input mode with
the pull-up resistor.
In addition to functioning as a general-purpose I/O port, Port 2 also shares functions as
an address bus (A0 to A7) and an address bus (A16 to A23). To use Port 2 as address bus (A0
to A7 or A16 to A23), write “0” to P2 output latch and turn off the programmable pull-up
resistor.
Figure 3.5.4 Port 2
Direction control
(on bit basis)
Reset
P2CR write
Output
latch
P2 write
S
B
Selector
A
P2 read
Output buffer
Port 2
P20 to P27
(A0 to A7/A16 to A23)
Function control
(on bit basis)
P2FC write
A16 to A23
A0 to A7
S
B
Selector
A
Programmable
pull up
P-ch
B
Selector
A
S



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