ST10F269-T3 STMicroelectronics, ST10F269-T3 Datasheet - Page 96

• Manufacturer Part Number: ST10F269-T3
• Manufacturer: STMicroelectronics

Specifications of ST10F269-T3

• Cpu Family: ST10
• Device Core Size: 16b
• Frequency (max): 32MHz
• Interface Type: ASC/I2C/SSC
• Program Memory Type: Flash
• Program Memory Size: 256KB
• Total Internal Ram Size: 12KB
• # I/os (max): 111
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 16-chx10-bit
• Instruction Set Architecture: CISC/RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 144
• Package Type: TQFP
• Lead Free Status / Rohs Status: Supplier Unconfirmed

ST10F269-T3
Baud Rate Generation
The Baud rate generator is clocked by f
stopped through the global enable bit SSCEN in register SSCCON. Register SSCBR is the dual-function
Baud Rate Generator/Reload register. Reading SSCBR, while the SSC is enabled, returns the content of
the timer. Reading SSCBR, while the SSC is disabled, returns the programmed reload value. In this mode
the desired reload value can be written to SSCBR.
Note
The formulas below calculate the resulting Baud rate for a given reload value and the required reload
value for a given Baud rate:
(SSCBR) represents the content of the reload register, taken as unsigned 16-bit integer.
Table 25 lists some possible Baud rates against the required reload values and the resulting bit times for
a 32MHz CPU clock.
Table 25 : Synchronous Baud Rate and Reload Values
96/162
Reserved use a reload value > 0.
Baud rate
SSCBR = (
Never write to SSCBR, while the SSC is enabled.
244.14 Baud
Baud Rate
500KBaud
100KBaud
10KBaud
1K Baud
8MBaud
4MBaud
2MBaud
1MBaud
SSC
=
2 x Baud rate
2 x [(SSCBR) + 1]
f
CPU
f
CPU
SSC
) - 1
CPU
/2. The timer is counting downwards and can be started or
Bit Time
5.24ms
125ns
250ns
500ns
100µs
10µs
1ms
1µs
2µs
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Reload Value
030Ch
3E7Fh
FFFFh
000Fh
001Fh
009Fh
0001h
0003h
0007h
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