M16C62_M Datasheet, PDF (276/615 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

Mitsubishi microcomputers
M16C / 62A Group
Appendix Standard Serial I/O Mode 2 (Flash Memory Version) ^{SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER}
How frequency is identified
When "0016" data is received 16 times from a peripheral unit at a baud rate of 9,600 bps, the value of the
bit rate generator is set to match the operating frequency (2 - 16 MHz). The highest speed is taken from
the first 8 transmissions and the lowest from the last 8. These values are then used to calculate the bit
rate generator value for a baud rate of 9,600 bps.
Baud rate cannot be attained with some operating frequencies. Table 1.29.4 gives the operation fre-
quency and the baud rate that can be attained for.
Table 1.29.4 Operation frequency and the baud rate
Operation frequency
(MHZ)
Baud rate
9,600bps
Baud rate
19,200bps
16MHZ
√
√
12MHZ
√
√
11MHZ
√
√
10MHZ
√
√
8MHZ
√
√
7.3728MHZ
√
√
6MHZ
√
√
5MHZ
√
√
4.5MHZ
√
√
4.194304MHZ
√
√
4MHZ
√
√
3.58MHZ
√
√
3MHZ
√
√
2MHZ
√
–
√ : Communications possible
– : Communications not possible
Baud rate
38,400bps
√
√
√
–
–
√
√
–
–
√
–
√
√
–
Baud rate
57,600bps
√
–
–
√
√
√
–
–
√
–
–
√
–
–
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