HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 441

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

SDRU—Serial data register U
SDRL—Serial data register L
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Not fixed
Not fixed
SDRU7
SDRL7
R/W
R/W
7
7
Not fixed
Not fixed
SDRU6
SDRL6
R/W
R/W
6
6
Not fixed
Not fixed
SDRU5
SDRL5
R/W
R/W
Stores transmit and receive data
8-bit transfer mode:
16-bit transfer mode:
Stores transmit and receive data
8-bit transfer mode:
16-bit transfer mode:
5
5
Not fixed
Not fixed
SDRU4
SDRL4
R/W
R/W
4
4
Not fixed
Not fixed
SDRU3
SDRL3
R/W
R/W
3
3
Not used
Upper 8 bits of data
8-bit data
Lower 8 bits of data
H'FFA2
H'FFA3
Not fixed
Not fixed
SDRU2
SDRL2
R/W
R/W
2
2
Not fixed
Not fixed
SDRU1
SDRL1
R/W
R/W
1
1
Not fixed
Not fixed
SDRU0
SDRL0
R/W
R/W
0
0
SCI1
SCI1
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