ST10F269-T3 STMicroelectronics, ST10F269-T3 Datasheet - Page 94

• 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
Synchronous Mode Baud Rates
For synchronous operation, the Baud rate generator provides a clock with 4 times the rate of the
established Baud rate. The Baud rate for synchronous operation of serial channel ASC0 can be
determined by the following formula:
(S0BRL) represents the content of the reload register, taken as unsigned 13-bit integers,
(S0BRS) represents the value of bit S0BRS (‘0’ or ‘1’), taken as integer.
Using the above equation, the maximum Baud rate can be calculated for any clock speed as given in
Table 24.
Table 24 : Commonly Used Baud Rates by Reload Value and Deviation Errors
Note: The deviation errors given in the Table 24 are rounded. To avoid deviation errors use a Baud rate
94/162
Baud Rate (Baud)
B
S0BRL = (
Sync
4 000 000
224 000
112 000
56 000
38 400
19 200
9 600
4 800
2 400
1 200
crystal (providing a multiple of the ASC0/SSC sampling frequency)
600
490
=
4 x [2 + (S0BRS)] x [(S0BRL) + 1]
S0BRS = ‘0’, f
4 x [2 + (S0BRS)] x B
Deviation Error
+0.2% / -0.85%
+5.0% / -0.8%
+2.0% / -0.8%
+0.6% / -0.8%
+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%
±0.0%
f
CPU
CPU
f
CPU
= 32MHz
1A0Ah / 1A0Bh
00BFh / 00C0h
0D04h / 0D05h
1FE2h / 1FE3h
0011h / 0012h
0023h / 0024h
0046h / 0047h
0077h / 0078h
0340h / 0341h
0682h / 0683h
01A0h/ 01A1h
Reload Value
Sync
0000h
) - 1
Baud Rate (Baud)
2 666 667
224 000
112 000
56 000
38 400
19 200
9 600
4 800
2 400
1 200
320
600
S0BRS = ‘1’, f
Deviation Error
+0.6% / -0.1%
+0.3% / -0.1%
+8.2% / -0.8%
+3.5% / -0.8%
+1.3% / -0.8%
+0.6% / -0.8%
+0.1% / -0.1%
+0.0% / -0.1%
+0.0% / -0.0%
+0.0% / -0.0%
+0.2%
±0.0%
CPU
= 32MHz
115Bh / 115C7h
08ACh / 08ADh
000Bh / 000Ch
022Bh / 022Ch
008Ah / 008Bh
002Fh / 0030h
0017h / 0018h
0044h / 0045h
0115h / 0116h
0456h / 0457h
Reload Value
1FFFh
0000h