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NUC140-LD3N Datasheet(Fiches technique) 50 Page - Nuvoton Technology Corporation

Numéro de pièce NUC140-LD3N
Description  ARM Cortex™-M0 32-BIT MICROCONTROLLER
Télécharger  89 Pages
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Fabricant  NUVOTON [Nuvoton Technology Corporation]
Site Internet  http://www.nuvoton.com
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 50 page
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NuMicro
™ NUC120 Data Sheet
Publication Release Date: Jan. 2, 2012
- 50 -
Revision V2.03
System clock = Internal 22.1184 MHz high speed oscillator
Mode0
Mode1
Mode2
Baud rate
Parameter
Register
Parameter
Register
Parameter
Register
921600
x
x
A=0,B=11
0x2B00_0000
A=22
0x3000_0016
460800
A=1
0x0000_0001
A=2,B=11
0x2B00
A=1,B=15
0x2F00_0001
_0002
A=46
0x3000_002E
230400
A=4
0x0000_0004
A=
A=
4,B=15
6,B=11
0x2F00_0004
0x2B00_0006
A=94
0x3000_005E
115200
A=10
0x0000_000A
A=10,B=15
A=14,B=11
0x2F00_000A
0x2B00_000E
A=190
0x3000_00BE
57600
A=22
0x0000_0016
A=22,B=15
0x2F00_0016
A=382
0x30
A=30,B=11
0x2B00_001E
00_017E
38400
A=34
0x0000_0022
A=62,B=8
A=46,B=11
A=34,B=15
0x2800_003E
0x2B00_002E
0x2F00_0022
A=574
0x3000_023E
19200
A=70
0x0000_0046
A=126,B=8
A=94,B=11
A=70,B=15
0x2800_007E
0x2B00_005E
0x2F00_0046
A=1150
0x3000_047E
9600
A=142
0x0000_008E
A=254,B=8
A=190,B=11
A=142,B=15
0x2800_00FE
0x2B00_00BE
0x2F00_008E
A=2302
0x3000_08FE
4800
A=286
0x0000_011E
A=510,B=8
A=382,B=11
A=286,B=15
0x2800_01FE
0x2B00_017E
0x2F00_011E
A=4606
0x3000_11FE
Table 5-7 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
evice. If a valid asserted /CTS is not detected the UART controller will not send data out.
RT controllers also provides Serial IrDA (SIR, Serial Infrared) function (User must set
Ir
(
E
ble
ct
n 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).
he
an IrDA SIR
Protocol encoder/decoder. The IrDA SIR protocol
ha
d
receive data at the same time. The IrDA SIR phys
l
er
delay between
n and rece
del
fe
software.
For NuMicro
™ NUC100/NUC120 Low Density, another alternate function of UART controllers is
RS-485 9-bit mode functio
TS pin or can program GPIO
(PB.2 for RTS0 and PB.6 for RTS1) to implement the function by software. The RS-485 mode is
selected by setting the UA_FUN_SEL register to select RS-485 function. The RS-485 driver
control is implemented using the RTS control signal from an asynchronous serial port to enable
the RS-485 driver. In RS-485 mode, many characteristics of the RX and TX are same as UART.
d
The UA
DA_EN UA_FUN_S L [1]) to ena
IrDA fun ion). The SIR specificatio
T
IrDA SIR block contains
is
ica
lf-duplex only. So it cannot transmit an
layer specifies a minimum 10ms transf
transmissio
ption. This
ay ature must be implemented by
n, and direction control provided by R




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