HD6432621 Hitachi, HD6432621 Datasheet - Page 1008
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
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SCR1—Serial Control Register 1
964
Note: For details of how to clear interrupt requests, see section 13.2.6, Serial Control Register (SCR).
Bit
Initial value
Read/Write
Transmit interrupt enable
0 Transmit data empty interrupt (TXI) request disabled
1
:
:
:
Transmit data empty interrupt (TXI) request enabled
R/W
TIE
7
0
Receive interrupt enable
0 Receive data full interrupt (RXI) request and receive error interrupt (ERI) request disabled
1
Receive data full interrupt (RXI) request and receive error interrupt (ERI) request enabled
R/W
RIE
6
0
Transmit enable
0 Transmission disabled
1
Transmission enabled
Receive enable
0 Reception disabled
1
R/W
TE
Reception enabled
Multiprocessor interrupt enable
5
0
0 Multiprocessor interrupts disabled
1
[Clearing conditions]
• When the MPIE bit is cleared to 0
• When data with MPB = 1 is received
Multiprocessor interrupts enabled
Receive interrupt (RXI) requests, receive error interrupt (ERI)
requests, and setting of the RDRF, FER, and ORER flags in SSR are
disabled until data with the multiprocessor bit set to 1 is received
Transmit end interrupt enable
0 Transmit end interrupt (TEI) request disabled
1
Notes: *1
R/W
Transmit end interrupt (TEI) request enabled
Clock enable
RE
0
1
4
0
0
1
0
1
*2
H'FF82
Asynchronous
mode
Synchronous
mode
Asynchronous
mode
Synchronous
mode
Asynchronous
mode
Synchronous
mode
Asynchronous
mode
Synchronous
mode
Outputs a clock of the same frequency as the bit rate.
Inputs a clock with a frequency 16 times the bit rate.
MPIE
R/W
3
0
Internal clock/SCK pin functions as
I/O port
Internal clock/SCK pin functions as
serial clock output
Internal clock/SCK pin functions as
clock output
Internal clock/SCK pin functions as
serial clock output
External clock/SCK pin functions as
clock input
External clock/SCK pin functions as
serial clock input
External clock/SCK pin functions as
clock input
External clock/SCK pin functions as
serial clock input
TEIE
R/W
2
0
*2
*2
*1
CKE1
R/W
1
0
CKE0
R/W
0
0
SCI1
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