H8SLASH3028F datasheet(530/923 Pages) RENESAS

Part #	H8/3028F

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

PDF	923 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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530 / 923 page

Rev. 2.00, 09/03, page 500 of 890

Transmitting Serial Data (Synchronous Mode): Figure 13.16 shows a sample flowchart for

transmitting serial data and indicates the procedure to follow.

<End>

Yes

Clear TE bit to 0 in SCR

Yes

(2)

(1)

Initialize

(3)

(1)

(2)

(3)

Start transmitting

TDRE = 1

All data transmitted?

Read TEND flag in SSR

Read TDRE flag in SSR

Write transmit data in TDR

and clear TDRE flag to 0 in SSR

TEND = 1

SCI initialization: the transmit data output

function of the TxD pin is selected

automatically.

SCI status check and transmit data write:

read SSR, check that the TDRE flag is 1, then

write transmit data in TDR and clear the

TDRE flag to 0.

To continue transmitting serial data: after

checking that the TDRE flag is 1, indicating

that data can be written, write data in TDR,

then clear the TDRE flag to 0. When the

DMAC is activated by a transmit-data-empty

interrupt request (TXI) to write data in TDR,

the TDRE flag is checked and cleared

automatically.

Figure 13.16 Sample Flowchart for Serial Transmitting

H8/3028F Datasheet(PDF) 530 Page - Renesas Technology Corp