ST10F269-DP STMicroelectronics, ST10F269-DP Datasheet - Page 96

• Manufacturer Part Number: ST10F269-DP
• Description: MCU 16BIT 256K FLASH 144PQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F269-DP

• Core Processor: ST10
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SSC, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 144-BFQFP
• Processor Series: ST10F26x
• Core: ST10
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: No

ST10F269
Baud Rate Generation
The Baud rate generator is clocked by f
timer is counting downwards and can be started
or stopped through the global enable bit SSCEN
in register SSCCON. Register SSCBR is the
dual-function
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:
96/160
Baud rate
SSCBR = (
Never write to SSCBR, while the SSC is
enabled.
SSC
Baud
=
2 x Baud rate
2 x [(SSCBR) + 1]
Rate
f
CPU
f
CPU
Generator/Reload
SSC
) - 1
CPU
/2. The
(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 40MHz CPU clock.
Table 25 : Synchronous Baud Rate and Reload
Values
Reserved use a
reload value > 0.
10M Baud
5M Baud
2.5M Baud
1M Baud
100K Baud
10K Baud
1K Baud
306 Baud
Baud Rate
Bit Time
3.26ms
100ns
200ns
400ns
100 s
10 s
1ms
1 s
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Reload Value
07CFh
4E1Fh
FF4Eh
00C7h
0001h
0003h
0007h
0013h
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