HD6432633 Datasheet, PDF (829/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

Bits 3 to 0—Operate in the same way as for the normal SCI. For details, see section 16.2.7, Serial
Status Register (SSR).
However, the setting conditions for the TEND bit, are as shown below.
Bit 2
TEND
0
1
Description
Transmission is in progress
[Clearing conditions]
(Initial value)
• When 0 is written to TDRE after reading TDRE = 1
• When the DMAC* or DTC* is activated by a TXI interrupt and write data to TDR
Transmission has ended
[Setting conditions]
• Upon reset, and in standby mode or module stop mode
• When the TE bit in SCR is 0 and the ERS bit is also 0
• When TDRE = 1 and ERS = 0 (normal transmission) 2.5 etu after transmission of a
1-byte serial character when GM = 0 and BLK = 0
• When TDRE = 1 and ERS = 0 (normal transmission) 1.5 etu after transmission of a
1-byte serial character when GM = 0 and BLK = 1
• When TDRE = 1 and ERS = 0 (normal transmission) 1.0 etu after transmission of a
1-byte serial character when GM = 1 and BLK = 0
• When TDRE = 1 and ERS = 0 (normal transmission) 1.0 etu after transmission of a
1-byte serial character when GM = 1 and BLK = 1
Notes: etu: Elementary Time Unit (time for transfer of 1 bit)
* DMAC and DTC functions are not available in the H8S/2695.
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