ST10F272B_12 STMICROELECTRONICS [STMicroelectronics], ST10F272B_12 Datasheet - Page 75

• Manufacturer Part Number: ST10F272B_12
• Description: 16-bit MCU with 256 Kbyte Flash memory and 12/20 Kbyte RAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST10F272B/ST10F272E
Table 42.
Note:
15.3
Table 43.
Baud rate (baud)
Baud rate (baud)
2 000 000
5 000 000
112 000
112 000
56 000
38 400
19 200
56 000
38 400
19 200
9 600
4 800
2 400
1 200
9 600
4 800
2 400
1 200
600
300
245
ASC asynchronous baud rates by reload value and deviation errors (f
The deviation errors given in the
errors use a Baud rate crystal (providing a multiple of the ASC0 sampling frequency).
ASCx in synchronous mode
In synchronous mode, data is transmitted or received synchronously to a shift clock which is
generated by the ST10F272. Half-duplex communication up to 8M Baud (at 40 MHz of f
is possible in this mode.
ASC synchronous baud rates by reload value and deviation errors (f
S0BRS = ‘0’, f
S0BRS = ‘0’, f
Deviation error
Deviation error
+1.5% / -7.0%
+1.5% / -3.0%
+1.7% / -1.4%
+0.2% / -1.4%
+0.2% / -0.6%
+0.2% / -0.2%
+0.2% / 0.0%
+1.5% / -0.8%
+0.3% / -0.8%
+0.2% / -0.6%
+0.2% / -0.2%
0.0% / 0.0%
0.1% / 0.0%
0.0% / 0.0%
+0.2% / 0.0%
+0.1% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
CPU
CPU
= 64 MHz
= 40 MHz
Reload value
Reload value
00CF / 00D0
0D04 / 0D05
1A09 / 1A0A
1FE2 / 1FE3
019F / 01A0
002B / 002C
0000 / 0000
0010 / 0011
0022 / 0023
0033 / 0034
0067 / 0068
0340 / 0341
0681 / 0682
0000 / 0000
0058 / 0059
0081 / 0082
0103 / 0104
0207 / 0208
0410 / 0411
0822 / 0823
1045 / 1046
(hex)
(hex)
Doc ID 11917 Rev 3
Table 41
Baud rate (baud)
Baud rate (baud)
and
1 333 333
3 333 333
112 000
112 000
56 000
38 400
19 200
56 000
38 400
19 200
2 400
1 200
9 600
4 800
Table 42
9 600
4 800
2 400
1 200
600
300
163
S0BRS = ‘1’, f
S0BRS = ‘1’, f
are rounded. To avoid deviation
Deviation error
Deviation error
+6.3% / -7.0%
+6.3% / -0.8%
+3.3% / -1.4%
+0.9% / -1.4%
+0.9% / -0.2%
+0.4% / -0.2%
+0.1% / -0.2%
+0.1% / -0.1%
+0.1% / 0.0%
+2.6% / -0.8%
+0.9% / -0.8%
+0.9% / -0.2%
+0.4% / -0.2%
+0.1% / -0.2%
+0.1% / -0.1%
+0.1% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
CPU
CPU
= 64 MHz
= 40 MHz
CPU
CPU
Serial channels
Reload value
Reload value
08AD / 08AE
00AC / 00AD
0AD8 / 0AD9
000A / 000B
022A / 015B
115B / 115C
1FF2 / 1FF3
001C / 001D
056B / 056C
0089 / 008A
003A / 003B
015A / 015B
02B5 / 02B6
0000 / 0000
0016 / 0017
0021 / 0022
0044 / 0045
0114 / 0115
0456 / 0457
0000 / 0000
0055 / 0056
= 40 MHz)
= 64 MHz)
(hex)
(hex)
75/188
CPU
)