W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 168

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

12.2.8 Programmable Baud Generator (BLL/BHL) (Read/Write)
Two 8-bit registers, BLL and BHL, compose a programmable baud generator that uses 24 MHz to
generate a 1.8461 MHz frequency and divide it by a divisor from 1 to (2
the baud generator is the baud rate multiplied by 16, and this is the base frequency for the transmitter
and receiver. The table below illustrates the use of the baud generator with a frequency of 1.8461
MHz. In high-speed UART mode (CR0C, bits 7 and 6), the programmable baud generator directly
uses 24 MHz and the same divisor as the normal speed divisor. As a result, in high-speed mode, the
data transmission rate can be as high as 1.5M bps.
** Unless specified, the error percentage for all of the baud rates is 0.16%.
Note: Pre-Divisor is determined by CRF0 of UART A and B.
12.2.9 User-defined Register (UDR) (Read/Write)
This is a temporary register that can be accessed and defined by the user.
PRE-DIV: 13
1.8461M HZ
115200
19200
38400
57600
134.5
1200
1800
2000
2400
3600
4800
7200
9600
110
150
300
600
50
75
PRE-DIV: 1.0
BAUD RATE FROM DIFFERENT PRE-DIVIDER
1497600
24M HZ
124800
249600
499200
748800
1478.5
15600
23400
26000
31200
46800
62400
93600
1430
1950
3900
7800
650
975
DECIMAL DIVISOR
W83627DHG-P/W83627DHG-PT
GENERATE 16X
USED TO
CLOCK
2304
1536
1047
-158-
857
768
384
192
96
64
58
48
32
24
16
12
6
3
2
1
Publication Release Date: July 09, 2009
ERROR PERCENTAGE
16
–1). The output frequency of
0.099%
0.18%
0.53%
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Version 1.94