H8S2245 datasheet(462/818 Pages) RENESAS

462 / 818 page

Section 12 Serial Communication Interface (SCI)

Rev.3.00 Mar. 26, 2007 Page 420 of 772

REJ09B0355-0300

Bit 2—Transmit End (TEND): Indicates that there is no valid data in TDR when the last bit of

the transmit character is sent, and transmission has been ended.

The TEND flag is read-only and cannot be modified.

Bit 2

TEND

Description

[Clearing conditions]

• When 0 is written to TDRE after reading TDRE = 1

• When the DTC* is activated by a TXI interrupt and write data to TDR

[Setting conditions]

(Initial value)

• When the TE bit in SCR is 0

• When TDRE = 1 at transmission of the last bit of a 1-byte serial transmit character

Note:

DTC can clear this bit only when DISEL is 0 with the transfer counter not being 0.

Bit 1—Multiprocessor bit (MPB): When reception is performed using multiprocessor format in

asynchronous mode, MPB stores the multiprocessor bit in the receive data.

MPB is a read-only bit, and cannot be modified.

Bit 1

MPB

Description

[Clearing condition]

(Initial value)*

When data with a 0 multiprocessor bit is received

[Setting condition]

When data with a 1 multiprocessor bit is received

Note:

Retains its previous state when the RE bit in SCR is cleared to 0 with multiprocessor

format.

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