hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 612

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Appendix B Internal I/O Registers
SCR3—Serial Control Register 3
Bit
Initial value
Read/Write
Rev. 7.00 Mar 10, 2005 page 570 of 652
REJ09B0042-0700
Transmit Interrupt Enable
0
1
Receive Interrupt Enable
0
1
Transmit data empty interrupt request (TXI) disabled
Transmit data empty interrupt request (TXI) enabled
Transmit Enable
0
1
Receive data full interrupt request (RXI) and receive error interrupt request (ERI) disabled
Receive data full interrupt request (RXI) and receive error interrupt request (ERI) enabled
Receive Enable
0
1
Transmit operation disabled (TXD
Transmit operation enabled (TXD
Multiprocessor Interrupt Enable
0
1
Receive operation disabled (RXD
Receive operation enabled (RXD
Transmit End Interrupt Enable
0
1
Multiprocessor interrupt request disabled (normal receive operation)
[Clearing condition]
When data is received in which the multiprocessor bit is set to 1
Multiprocessor interrupt request enabled
The receive interrupt request (RXI), receive error interrupt request (ERI), and setting of the
RDRF, FER, and OER flags in the serial status register (SSR), are disabled until data with
the multiprocessor bit set to 1 is received.
R/W
Clock Enable
TIE
CKE1
Bit 1
7
0
Transmit end interrupt request (TEI) disabled
Transmit end interrupt request (TEI) enabled
0
0
1
1
CKE0
Bit 0
0
1
0
1
R/W
RIE
6
0
Communication Mode
Asynchronous
Synchronous
Asynchronous
Synchronous
Asynchronous
Synchronous
Asynchronous
Synchronous
32
32
R/W
TE
pin is transmit data pin)
pin is I/O port)
5
0
32
32
pin is receive data pin)
pin is I/O port)
R/W
RE
4
0
Clock Source
Internal clock
Internal clock
Internal clock
Reserved (Do not specify this combination)
External clock
External clock
Reserved (Do not specify this combination)
Reserved (Do not specify this combination)
Description
MPIE
R/W
3
0
H'AA
TEIE
R/W
2
0
SCK
I/O port
Serial clock output
Clock output
Clock input
Serial clock input
32
Pin Function
CKE1
R/W
1
0
CKE0
R/W
0
0
SCI3