hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 276

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hd66100

Manufacturer Part Number
hd66100
Description
H8/3867 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet

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Bit 7: Transmit interrupt enable (TIE)
Bit 7 selects enabling or disabling of the transmit data empty interrupt request (TXI) when
transmit data is transferred from the transmit data register (TDR) to the transmit shift register
(TSR), and bit TDRE in the serial status register (SSR) is set to 1.
TXI can be released by clearing bit TDRE or bit TIE to 0.
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 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 TDR 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 SPC31 or 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
(TXD pin is transmit data pin)
(TXD pin is I/O port)
(initial value)
(initial value)
(initial value)
261

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