H8SXSLASH1663 datasheet(724/1158 Pages) RENESAS

부품명	H8SX/1663

상세설명	Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

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제조업체	RENESAS [Renesas Technology Corp]

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Section 15 Serial Communication Interface (SCI, IrDA, CRC)

Rev.1.00 Jun. 07, 2006 Page 672 of 1102

REJ09B0294-0100

• When SMIF in SCMR = 1

Bit

Bit Name

Initial Value

R/W

TDRE

R/(W)*

RDRF

R/(W)*

ORER

R/(W)*

ERS

R/(W)*

PER

R/(W)*

TEND

MPB

MPBT

R/W

Note: * Only 0 can be written, to clear the flag.

Bit Functions in Normal Serial Communication Interface Mode (When SMIF in SCMR = 0):

Bit

Bit Name

Initial

Value

R/W

Description

TDRE

R/(W)* Transmit Data Register Empty

Indicates whether TDR contains transmit data.

[Setting conditions]

• When the TE bit in SCR is 0

• When data is transferred from TDR to TSR

[Clearing conditions]

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

(When the CPU is used to clear this flag by writing 0

while the corresponding interrupt is enabled, be sure

to read the flag after writing 0 to it.)

• When a TXI interrupt request is issued allowing

DMAC or DTC to write data to TDR

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