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TMP91C025FG bảng dữ liệu(PDF) 77 Page - Toshiba Semiconductor

tên linh kiện TMP91C025FG
Giải thích chi tiết về linh kiện  Original CMOS 16-Bit Microcontroller
PDF  260 Pages
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nhà sản xuất  TOSHIBA [Toshiba Semiconductor]
Trang chủ  http://www.semicon.toshiba.co.jp/eng
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TMP91C025FG bảng dữ liệu(HTML) 77 Page - Toshiba Semiconductor

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TMP91C025
2007-02-28
91C025-75
3.5.10
Port C (PC0 to PC5)
Port C0 to C5 are 6-bit general-purpose I/O ports. Each bit can be set individually for
input or output. Resetting sets PC0 to PC5 to be an input ports. It also sets all bits of the
output latch register to 1.
In addition to functioning as general-purpose I/O port pins, PC0 to PC5 can also function
as the I/O for serial channels 0 and 1. A pin can be enabled for I/O by writing 1 to the
corresponding bit of the port C function register (PCFC).
Resetting resets all bits of the registers PCCR and PCFC to 0 and sets all pins to be input
ports .
(1) Port C0, C3 (TXD0/TXD1)
As well as functioning as I/O port pins, port C0 and C3 can also function as serial
channel TXD output pins. In case of use TXD0/TXD1, it is possible to logical invert by
setting the register PC<PC0, PC3>.
And port C0 to C3 have a programmable open drain function which can be controlled
by the register PCODE<ODEPC0, ODEPC3>.
Figure 3.5.23 Port C0 and C3
PCODE<ODEPC0, C3>
Open-drain
set possible
Selector
A
B
S
Selector
A
B
S
PC0 (TXD0)
PC3 (TXD1)
TXD0, TXD1
PC Read
Ditection control
(on bit basis)
PCCR write
Function control
(on bit basis)
PCFC write
S
Output latch
PC write
Reset
Logical invert



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