HD6433935 Hitachi, HD6433935 Datasheet - Page 448

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

SCSR1—Serial control status register 1
436
Bit
Initial value
Read/Write
Note: * Only a write of 0 for flag clearing is possible.
—
—
7
1
Extension data bit
SOL
R/W
0
1
6
0
Read
Write
Read
Write
Overrun error flag
ORER
R/(W)
0 Clearing conditions:
1 Setting conditions:
5
0
SO
Changes SO
SO
Changes SO
After reading ORER = 1, cleared by writing 0 to ORER
When an external clock is used and the clock is input
after transfer is completed
Tail mark transmission flag
0 Idle state, or 8-bit/16-bit data transfer in progress
1 Tail mark transmission in progress
*
1
1
output level is low
output level is high
Start flag
0
1
—
—
4
1
Read
Write
Read
Write
1
1
output to low level
output to high level
Transfer operation stopped
Invalid
Transfer operation in progress
Starts transfer operation
—
—
3
1
H'A1
—
—
2
1
MTRF
R
1
0
STF
R/W
0
0
SCI1