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M54-LN Datasheet(Fiches technique) 48 Page - Nuvoton Technology Corporation

Numéro de pièce M54-LN
Description  32-BIT MICROCONTROLLER
Télécharger  71 Pages
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Fabricant  NUVOTON [Nuvoton Technology Corporation]
Site Internet  http://www.nuvoton.com
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 48 page
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NuMicro
M058/M0516 Data Sheet
Publication Release Date: May 30, 2011
- 48 -
Revision V2.00
System clock = internal 22.1184 MHz high speed oscillator
Baud rate
Mode0
Mode1
Mode2
921600
x
A=0,B=11
A=22
460800
A=1
A=1,B=15
A=2,B=11
A=46
230400
A=4
A=4,B=15
A=6,B=11
A=94
115200
A=10
A=10,B=15
A=14,B=11
A=190
57600
A=22
A=22,B=15
A=30,B=11
A=382
38400
A=34
A=62,B=8
A=46,B=11
A=34,B=15
A=574
19200
A=70
A=126,B=8
A=94,B=11
A=70,B=15
A=1150
9600
A=142
A=254,B=8
A=190,B=11
A=142,B=15
A=2302
4800
A=286
A=510,B=8
A=382,B=11
A=286,B=15
A=4606
Table 6-4 UART Baud Rate Setting Table
The UART0 and UART1 controllers support auto-flow control function that uses two low-level
signals, /CTS (clear-to-send) and /RTS (request-to-send), to control the flow of data transfer
between the UART and external devices (ex: Modem). When auto-flow is enabled, the UART is
not allowed to receive data until the UART asserts /RTS to external device. When the number of
bytes in the RX FIFO equals the value of RTS_TRI_LEV (UA_FCR [19:16]), the /RTS is de-
asserted. The UART sends data out when UART controller detects /CTS is asserted from external
device. If a valid asserted /CTS is not detected the UART controller will not send data out.
The UART controllers also provides Serial IrDA (SIR, Serial Infrared) function (User must set
IrDA_EN (UA_FUN_SEL[1:0]) to enable IrDA function). The SIR specification defines a short-
range infrared asynchronous serial transmission mode with one start bit, 8 data bits, and 1 stop
bit. The maximum data rate is 115.2 Kbps (half duplex). The IrDA SIR block contains an IrDA SIR
Protocol encoder/decoder. The IrDA SIR protocol is half-duplex only. So it cannot transmit and
receive data at the same time. The IrDA SIR physical layer specifies a minimum 10ms transfer
delay between transmission and reception. This delay feature must be implemented by software.
Another alternate function of UART controllers is RS-485 9 bit mode function, and direction




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