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TMP86FS49AIUG 数据表(PDF) 254 Page - Toshiba Semiconductor |
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TMP86FS49AIUG 数据表(HTML) 254 Page - Toshiba Semiconductor |
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254 / 296 page  Page 238 20. Serial PROM Mode 20.4 Interface Specifications for UART TMP86FS49AIUG Note 1: “Ref. Frequency” and “Rating” show frequencies available in the serial PROM mode. Though the frequency is supported in the serial PROM mode, the serial PROM mode may not be activated correctly due to the frequency difference in the external controller (such as personal computer) and oscillator, and load capacitance of communication pins. Note 2: It is recommended that the total frequency difference is within ±3% so that auto detection is performed correctly by the ref- erence frequency. Note 3: The external controller must transmit the matching data (5AH) repeatedly till the auto detection of baud rate is performed. This number indicates the number of times the matching data is transmitted for each frequency. Table 20-5 Operating Frequency and Baud Rate in the Serial PROM Mode (Note 3) Reference Baud Rate (bps) 76800 62500 57600 38400 31250 19200 9600 Baud Rate Modification Data 04H 05H 06H 07H 0AH 18H 28H Ref. Fre- quency (MHz) Rating (MHz) Baud rate (bps) (%)(bps)(%) (bps)(%) (bps) (%) (bps)(%) (bps)(%) (bps)(%) 1 2 1.91 to 2.10 - -------- --- 9615 +0.16 2 4 3.82 to 4.19 - ------- 31250 0.00 19231 +0.16 9615 +0.16 4.19 3.82 to 4.19 - ------- 32734 +4.75 20144 +4.92 10072 +4.92 3 4.9152 4.70 to 5.16 - ----- 38400 0.00 - - 19200 0.00 9600 0.00 5 4.70 to 5.16 - ----- 39063 +1.73 - - 19531 +1.73 9766 +1.73 4 6 5.87 to 6.45 - -------- --- 9375 -2.34 6.144 5.87 to 6.45 - -------- --- 9600 0.00 5 7.3728 7.05 to 7.74 - - - 57600 0.00 - - - - 19200 0.00 9600 0.00 6 8 7.64 to 8.39 - - 62500 0.00 - - 38462 +0.16 31250 0.00 19231 +0.16 9615 +0.16 7 9.8304 9.40 to 10.32 76800 0.00 ---- 38400 0.00 - - 19200 0.00 9600 0.00 10 9.40 to 10.32 78125 +1.73 ---- 39063 +1.73 - - 19531 +1.73 9766 +1.73 8 12 11.75 to 12.90 - - - - 57692 +0.16 - - 31250 0.00 18750 -2.34 9375 -2.34 12.288 11.75 to 12.90 - - - - 59077 +2.56 - - 32000 +2.40 19200 0.00 9600 0.00 12.5 11.75 to 12.90 - - 60096 -3.85 60096 +4.33 - - 30048 -3.85 19531 +1.73 9766 +1.73 9 14.7456 14.10 to 15.48 - - - - 57600 0.00 38400 0.00 - - 19200 0.00 9600 0.00 10 16 15.27 to 16.77 76923 +0.16 62500 0.00 - - 38462 +0.16 31250 0.00 19231 +0.16 9615 +0.16 |
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