參數(shù)資料
型號: ST10F269DIETR
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, UUC
封裝: DIE
文件頁數(shù): 154/161頁
文件大小: 1595K
代理商: ST10F269DIETR
ST10F269-T3
92/160
Asynchronous Mode Baud rates
For asynchronous operation, the Baud rate generator provides a clock with 16 times the rate of the
established Baud rate. Every received bit is sampled at the 7th, 8th and 9th cycle of this clock. The Baud
rate for asynchronous operation of serial channel ASC0 and the required reload value for a given Baud
rate can be determined by the following formulas:
(S0BRL) represents the content of the reload register, taken as unsigned 13-bit integer,
(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 given clock speed. Baud
rate versus reload register value (SOBRS=0 and SOBRS=1) is described in Table 23.
Note: The deviation errors given in the Table 23 are rounded. To avoid deviation errors use a Baud rate
crystal (providing a multiple of the ASC0/SSC sampling frequency).
Table 23 : Commonly Used Baud Rates by Reload Value and Deviation Errors
S0BRS = ‘0’, fCPU = 32MHz
S0BRS = ‘1’, fCPU = 32MHz
Baud Rate (Baud)
Deviation Error
Reload Value
Baud Rate (Baud)
Deviation Error
Reload Value
1000 000
±0.0%
0000h
666 667
±0.0%
0000h
56000
+5.0% / -0.8%
0010h / 001h
56000
+8.2% / -0.8%
000Ah / 000Bh
38400
+0.2% / -3.5%
0019h / 0020h
38400
+2.1% / -3.5%
0010h / 0011h
19200
+0.2% / -1.7%
0033h / 0034h
19200
+2.1% / -0.8%
0021h / 0022h
9600
+0.2% / -0.8%
0067h/ 0068h
9600
+0.6% / -0.8%
0044h / 0045h
4800
+0.5% / -0.3%
00CFh / 00CEh
4800
+0.6% / -0.1%
0089h / 008Ah
2400
+0.2% / -0.1%
019Fh / 01A0h
2400
+0.3% / -0.1%
0114h / 0115h
1200
+0.1% / -0.1%
0340h / 0341h
1200
+0.1% / -0.1%
022Ah / 022Bh
600
+0.1% / -0.1%
0681h / 0682h
600
+0.1% / -0.1%
0456h / 0457h
95
+0.1% / -0.1%
291Dh / 291Eh
75
+0.1% / 0.1%
22B7h / 22B8h
63
+0.1% / -0.1%
2955h / 2956h
BAsync =
fCPU
16 x [2 + (S0BRS)] x [(S0BRL) + 1]
S0BRL = (
fCPU
16 x [2 + (S0BRS)] x BAsync
) - 1
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ST10F269DT3 功能描述:16位微控制器 - MCU 16Bit MCU 256K BYTE FLASH,12K BYTE RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
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