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TMP93CS41 データシート(PDF) 63 Page - Toshiba Semiconductor

部品番号 TMP93CS41
部品情報  CMOS 16-Bit Microcontroller
PDF  248 Pages
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メーカー  TOSHIBA [Toshiba Semiconductor]
ホームページ  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMP93CS41 データシート(HTML) 63 Page - Toshiba Semiconductor

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TMP93CS40/TMP93CS41
2004-02-10
93CS40-61
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 a bit basis using the control
register P2CR and function register P2FC. Resetting resets all bits of output latch P2,
control register P2CR and function register P2FC to “0”. It also sets port 2 to input mode
and connects a pull-down resistor.
In addition to functioning as a general-purpose I/O port, port 2 also functions as an
address bus (A0 to A7) or (A16 to A23). To use port 2 as an address bus, write 1 to the
output latches to turn off the programmable pull-down resistors.
Figure 3.5.5 Port 2
Port 2
P20 to P27
(A0 to A7 or A16 to A23)
Direction control
(on bit basis)
Reset
P2CR write
Output
latch
P2 write
Output buffer
P2 read
Selector
A
B
S
Function control
(on bit basis)
P2FC write
Selector
A
B
S
Selector
A
B
S
A16 to A23
A0 to A7
N-ch
Programmable
pull down



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