HD404449 Datasheet, PDF (93/123 Pages) Hitachi Semiconductor – HD404449 SERIES

HD404449 Series
Miscellaneous Register (MIS: $00C): This register has the following functions (figure 76).
• R4₃/SO₁ pin PMOS control
Miscellaneous register (MIS: $00C) is a 4-bit write-only register and is reset to $0 by MCU reset.
Miscellaneous register (MIS: $00C)
Bit
Initial value
Read/Write
Bit name
3
0
W
MIS3
2
0
W
MIS2
1
0
W
MIS1
0
0
W
MIS0
MIS1
0
MIS0
0
1
1
0
1
t_RC
0.12207 ms
0.24414 ms*
7.8125 ms
62.5 ms
Not used
MIS2
0
1
R4₃/SO₁ PMOS on/off selection
On
Off
MIS3 Pull-up MOS on/off selection
0
Off
1
On
Note: *This value is valid only for direct transfer operation.
Figure 76 Miscellaneous Register (MIS)
Serial Mode Register 2A (SM2A: $01B): This register has the following functions (figure 77).
• R5₁/SCK₂ pin function selection
• Serial interface 2 transmit clock selection
• Serial interface 2 prescaler division ratio selection
• Serial interface 2 initialization
Serial mode register 2A (SM2A: $01B) is a 4-bit write-only register. It is reset to $0 by MCU reset.
A write signal input to serial mode register 2A (SM2A: $01B) discontinues the input of the transmit clock
to serial data register 2 (SR2L: $01D, SR1U: $01E) and the octal counter, and the octal counter is reset to
93