hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 383

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

Bit 7
TIE
0
1
Bit 6—Receive Interrupt Enable (RIE)
Bit 6 selects enabling or disabling of the receive data full interrupt request (RXI) and the receive
error interrupt request (ERI) when receive data is transferred from the receive shift register (RSR)
to the receive data register (RDR), and bit RDRF in the serial status register (SSR) is set to 1.
There are three kinds of receive error: overrun, framing, and parity.
RXI and ERI can be released by clearing bit RDRF or the FER, PER, or OER error flag to 0, or by
clearing bit RIE to 0.
Bit 6
RIE
0
1
Bit 5—Transmit Enable (TE)
Bit 5 selects enabling or disabling of the start of transmit operation.
Bit 5
TE
0
1
Notes: 1. Bit TDRE in SSR is fixed at 1.
2. When transmit data is written to TDR in this state, bit TDRE in SSR is cleared to 0 and
serial data transmission is started. Be sure to carry out serial mode register (SMR)
settings, and setting of bit SPC32 in SPCR, to decide the transmission format before
setting bit TE to 1.
Description
Transmit data empty interrupt request (TXI) disabled
Transmit data empty interrupt request (TXI) enabled
Description
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
Description
Transmit operation disabled *
Transmit operation enabled *
2
1
(TXD32 pin is transmit data pin)
(TXD32 pin is I/O port)
Section 10 Serial Communication Interface
Rev. 7.00 Mar 10, 2005 page 341 of 652
REJ09B0042-0700
(initial value)
(initial value)
(initial value)