ST10F276E
Serial channels
Table 54. ASC synchronous baud rates by reload value and deviation errors (fCPU = 40 MHz)
S0BRS = ‘0’, fCPU = 40 MHz S0BRS = ‘1’, fCPU = 40 MHz
Baud rate
(baud)
Reload value
Baud rate
(baud)
Reload value
Deviation error
Deviation error
(hex)
(hex)
900
612
0.0% / 0.0%
0.0% / 0.0%
15B2 / 15B3
1FE8 / 1FE9
600
407
0.0% / 0.0%
0.0% / 0.0%
15B2 / 15B3
1FFD / 1FFE
Table 55. ASC synchronous baud rates by reload value and deviation errors (fCPU = 64 MHz)
S0BRS = ‘0’, fCPU = 64 MHz S0BRS = ‘1’, fCPU = 64 MHz
Baud rate
(baud)
Reload value
Baud rate
(baud)
Reload value
Deviation error
Deviation error
(hex)
(hex)
8 000 000
112 000
56 000
38 400
19 200
9 600
0.0% / 0.0%
+0.6% / -0.8%
+0.6% / -0.1%
+0.2% / -0.3%
+0.2% / -0.1%
+0.0% / -0.1%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0000 / 0000
0046 / 0047
008D / 008E
00CF / 00D0
019F / 01A0
0340 / 0341
0681 / 0682
0D04 / 0D05
1A09 / 1A0A
1FFB / 1FFC
5 333 333
112 000
56 000
38 400
19 200
9 600
0.0% / 0.0%
+1.3% / -0.8%
+0.3% / -0.8%
+0.6% / -0.1%
+0.3% / -0.1%
+0.1% / -0.1%
0.0% / -0.1%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0.0% / 0.0%
0000 / 0000
002E / 002F
005E / 005F
0089 / 008A
0114 / 0115
022A / 022B
0456 / 0457
08AD / 08AE
115B / 115C
1724 / 1725
1FF2 / 1FF3
4 800
4 800
2 400
2 400
1 200
1 200
977
900
652
Note:
The deviation errors given in the Table 54 and Table 55 are rounded. To avoid deviation
errors use a Baud rate crystal (providing a multiple of the ASC0 sampling frequency)
14.4
High speed synchronous serial interfaces
The High-Speed Synchronous Serial Interfaces (SSC0 and SSC1) provides flexible high-
speed serial communication between the ST10F276E and other microcontrollers,
microprocessors or external peripherals.
The SSCx supports full-duplex and half-duplex synchronous communication. The serial
clock signal can be generated by the SSCx itself (master mode) or be received from an
external master (slave mode). Data width, shift direction, clock polarity and phase are
programmable.
This allows communication with SPI-compatible devices. Transmission and reception of data
is double-buffered. A 16-bit Baud rate generator provides the SSCx with a separate serial
clock signal. The serial channel SSCx has its own dedicated 16-bit Baud rate generator with
16-bit reload capability, allowing Baud rate generation independent from the timers.
Doc ID 12303 Rev 3
97/235
STMICROELECTRONICS [ ST ]
