ST10 STMICROELECTRONICS [STMicroelectronics], ST10 Datasheet - Page 24

• Manufacturer Part Number: ST10
• Description: 16-BIT MCU WITH 32K BYTE ROM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST10C167
XIII - SERIAL CHANNELS
Serial communication with other microcontrollers,
processors, terminals or external peripheral com-
ponents is provided by two serial interfaces: the
asynchronous/synchronous
(ASC0) and the high-speed synchronous serial
channel (SSC).
Two dedicated Baud rate generators set up all
standard Baud rates without the requirement of
oscillator tuning.
For transmission, reception and erroneous recep-
tion, 3 separate interrupt vectors are provided for
each serial channel.
Table 10 : Commonly used Baud rates by reload value and deviation errors
Note
24/65
Baud Rate (Baud)
The deviation errors given in the table above are rounded. Using a Baud rate crystal will provide correct Baud rates without deviation
errors.
781250
56000
38400
19200
9600
4800
2400
1200
600
95
S0BRS = ‘0’, f
Deviation Error
+7.3% / -0.4%
+1.7% / -3.1%
+1.7% / -0.8%
+0.5% / -0.8%
+0.5% / -0.1%
+0.2% / -0.1%
+0.0% / -0.1%
+0.0% / -0.1%
+0.4% / 0.4%
0.0%
CPU
= 25MHz
serial
000C
1FFF
00A1
028A
0013
0027
0144
0515
Reload Value
0050
0000
channel
H
H
H
H
H
H
H
H
H
/ 0051
/ 000D
/ 0014
/ 0028
/ 00A2
/ 0145
/ 028B
/ 0516
/ 1FFF
H
H
H
H
H
H
H
H
H
H
Baud Rate (Baud)
ASCO
ASCO
communication
half-duplex synchronous communication up to
5M Baud
asynchronous operation, the Baud rate generator
provides a clock with 16 times the rate of the
established Baud rate.
The table below lists various commonly used
Baud rates together with the required reload val-
ues and the deviation errors compared to the
intended Baud rate (see Table 10).
For synchronous operation, the Baud rate genera-
tor provides a clock with 4 times the rate of the
established Baud rate.
520833
56000
38400
19200
9600
4800
2400
1200
600
75
63
supports
S0BRS = ‘1’, f
at
25MHz
up
Deviation Error
+3.3% / -7.0%
+4.3% / -3.1%
+0.5% / -3.1%
+0.5% / -1.4%
+0.5% / -0.5%
+0.0% / -0.5%
+0.0% / -0.2%
+0.0% / -0.1%
+0.0% / 0.0%
+0.9% / 0.9%
full-duplex
to
0.0%
CPU
781.25K
system
= 25MHz
000CH / 000DH
00D8H / 00D9H
1FFFH / 1FFFH
001AH / 001BH
006BH / 006CH
01B1H / 01B2H
1B1FH / 1B20H
0008H / 0009H
0035H / 0036H
0363H / 0364H
Reload Value
asynchronous
clock.
Baud
0000
H
and
For