HD404318 Datasheet, PDF (49/68 Pages) Hitachi Semiconductor – 4-bit HMCS400-series microcomputer

Table 11 Transmit Clock Selection
PMRC
Bit 0
0
SMR
Bit 2
0
1
1
0
1
Bit 1
0
1
0
0
1
0
Bit 0
0
1
0
1
0
1
0
1
0
1
0
1
System Clock Divisor
÷ 2048
÷ 512
÷ 128
÷ 32
÷8
÷2
÷ 4096
÷ 1024
÷ 256
÷ 64
÷ 16
÷4
HD404318 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
Serial mode register (SMR: $005)
Bit
Initial value
Read/Write
Bit name
3
0
W
SMR3
2
0
W
SMR2
1
0
W
SMR1
0
0
W
SMR0
SMR3
0
1
R0₀/SCK
Mode Selection
R0₀
SCK
SMR2
0
1
SMR1
0
1
0
1
SMR0
0
1
0
1
0
1
0
1
SCK
Prescaler
Clock Source Division Ratio
Output Prescaler
Refer to
table 11
Output System clock —
Input External clock —
Figure 38 Serial Mode Register (SMR)
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