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TMP86FS49AUG Datasheet, PDF (254/294 Pages) Toshiba Semiconductor – 8 Bit Microcontroller
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20. Serial PROM Mode
20.4 Interface Specifications for UART
TMP86FS49AUG
Table 20-5 Operating Frequency and Baud Rate in the Serial PROM Mode
(Note 3)
1
2
3
4
5
6
7
8
9
10
Reference Baud Rate
(bps)
76800
Baud Rate Modification
04H
Data
Ref. Fre-
quency
(MHz)
Rating
(MHz)
Baud
rate (%)
(bps)
2
1.91 to 2.10
-
-
4
3.82 to 4.19
-
-
4.19
3.82 to 4.19
-
-
4.9152 4.70 to 5.16
-
-
5
4.70 to 5.16
-
-
6
5.87 to 6.45
-
-
6.144
5.87 to 6.45
-
-
7.3728 7.05 to 7.74
-
-
8
7.64 to 8.39
-
-
9.8304 9.40 to 10.32 76800 0.00
10
9.40 to 10.32 78125 +1.73
12
11.75 to 12.90 -
-
12.288 11.75 to 12.90 -
-
12.5 11.75 to 12.90 -
-
14.7456 14.10 to 15.48 -
-
16
15.27 to 16.77 76923 +0.16
62500
05H
(bps) (%)
-
-
-
-
-
-
-
62500
-
-
-
-
60096
-
62500
-
-
-
-
-
-
-
-
0.00
-
-
-
-
-3.85
-
0.00
57600
06H
(bps) (%)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
57600 0.00
-
-
-
-
-
-
57692 +0.16
59077 +2.56
60096 +4.33
57600 0.00
-
-
38400
07H
(bps) (%)
-
-
-
-
-
-
38400 0.00
39063 +1.73
-
-
-
-
-
-
38462 +0.16
38400 0.00
39063 +1.73
-
-
-
-
-
-
38400 0.00
38462 +0.16
31250
0AH
(bps) (%)
-
-
31250 0.00
32734 +4.75
-
-
-
-
-
-
-
-
-
-
31250 0.00
-
-
-
-
31250 0.00
32000 +2.40
30048 -3.85
-
-
31250 0.00
19200
18H
(bps) (%)
-
-
19231 +0.16
20144 +4.92
19200 0.00
19531 +1.73
-
-
-
-
19200 0.00
19231 +0.16
19200 0.00
19531 +1.73
18750 -2.34
19200 0.00
19531 +1.73
19200 0.00
19231 +0.16
9600
28H
(bps) (%)
9615 +0.16
9615 +0.16
10072 +4.92
9600 0.00
9766 +1.73
9375 -2.34
9600 0.00
9600 0.00
9615 +0.16
9600 0.00
9766 +1.73
9375 -2.34
9600 0.00
9766 +1.73
9600 0.00
9615 +0.16
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.
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