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COP688CS bảng dữ liệu(PDF) 25 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện COP688CS
Giải thích chi tiết về linh kiện  8-Bit CMOS ROM Based Microcontrollers with 4k to 24k Memory, Comparators and USART
PDF  53 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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COP688CS bảng dữ liệu(HTML) 25 Page - National Semiconductor (TI)

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USART (Continued)
USART CONTROL AND STATUS REGISTERS
The operation of the USART is programmed through three
registers: ENU, ENUR and ENUI.
DESCRIPTION OF USART REGISTER BITS
ENU-USART Control and Status Register (Address at 0BA)
PEN
PSEL1
XBIT9/
CHL1
CHL0
ERR
RBFL
TBMT
PSEL0
Bit 7
Bit 0
PEN: This bit enables/disables Parity (7- and 8-bit modes
only). Read/Write, cleared on reset.
PEN = 0
Parity disabled.
PEN = 1
Parity enabled.
PSEL1, PSEL0: Parity select bits. Read/Write, cleared on
reset.
PSEL1 = 0, PSEL0 = 0
Odd Parity (if Parity enabled)
PSEL1 = 0, PSEL0 = 1
Even Parity (if Parity enabled)
PSEL1 = 1, PSEL0 = 0
Mark(1) (if Parity enabled)
PSEL1 = 1, PSEL0 = 1
Space(0) (if Parity enabled)
XBIT9/PSEL0: Programs the ninth bit for transmission when
the USART is operating with nine data bits per frame. For
seven or eight data bits per frame, this bit in conjunction with
PSEL1 selects parity. Read/Write, cleared on reset.
DS012829-14
FIGURE 12. USART Block Diagram
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