HD404449 Datasheet, PDF (56/125 Pages) Hitachi Semiconductor – HD404449 SERIES

HD404449 Series
Serial mode register 2A (SM2A: $01B)
Bit
Initial value
Read/Write
Bit name
3
0
W
SM2A3
2
0
W
SM2A2
1
0
W
SM2A1
0
0
W
SM2A0
R5₁/SCK₂
SM2A3 mode selection
0
R5₁
1
SCK₂
SM2A2 SM2A1 SM2A0 SCK₂ Clock source
0
0
0 Output Prescaler
Prescaler
division
ratio
÷2048
1 Output Prescaler
÷512
1
0 Output Prescaler
÷128
1 Output Prescaler
÷32
1
0
0 Output Prescaler
÷8
1 Output Prescaler
÷2
1
0 Output System clock —
1 Input External clock —
Figure 37 Serial Mode Register 2A (SM2A)
Miscellaneous register (MIS: $00C)
Bit
3
Initial value
0
2
1
0
0
Read/Write
Bit name
W
MIS3
W
MIS2
W
MIS1
0
0
W
MIS0
MIS3
0
1
Pull-up MOS
on/off selection
Off
On
MIS2
0
1
CMOS buffer
on/off selection
for pin R4₃/SO₁
On
Off
MIS1
MIS0
t_RC selection.
Refer to figure 18 in the
operation modes section.
Figure 38 Miscellaneous Register (MIS)
54