HD404639R Datasheet, PDF (85/135 Pages) Renesas Technology Corp – 4-Bit Single-Chip Microcomputer

Table 26 (A) Serial Interface 1 Operating Modes
SM1A
Bit 3
1
PMRA
Bit 1 Bit 0
0
0
1
1
0
1
Operating Mode
Continuous clock output mode
Transmit mode
Receive mode
Transmit/receive mode
Table 26 (B) Serial Interface 2 Operating Modes
SM2A
Bit 3
1
PMRA
Bit 1 Bit 0
0
0
1
1
0
1
Operating Mode
Continuous clock output mode
Transmit mode
Receive mode
Transmit/receive mode
Table 27 Transmit Clock (Prescaler Output)
SM1B/
SM2B SM1A/ SM2A
Bit 0 Bit 2 Bit 1
0
0
0
1
1
0
1
0
0
1
1
0
Bit 0
0
1
0
1
0
1
0
1
0
1
0
1
Prescaler Division Ratio
÷ 2048
÷ 512
÷ 128
÷ 32
÷8
÷2
÷ 4096
÷ 1024
÷ 256
÷ 64
÷ 16
÷4
HD404639R Series
Transmit Clock Frequency
4096t_cyc
1024t_cyc
256t_cyc
64t_cyc
16t_cyc
4t _cyc
8192t_cyc
2048t_cyc
512t_cyc
128t_cyc
32t_cyc
8t _cyc
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