H8SLASH3028F datasheet(515/923 Pages) RENESAS

515 / 923 page

Rev. 2.00, 09/03, page 485 of 890

Figure 13.4 shows a sample flowchart for initializing the SCI.

Start of initialization

Set value in BRR

Select communication format

in SMR

1-bit interval elapsed?

Wait

(4)

(3)

(2)

(1)

Yes

Note: In simultaneous transmitting and receiving, the TE and RE bits should be cleared to

0 or set to 1 simultaneously.

Set TE or RE bit to 1 in SCR

Set the RIE, TIE, TEIE, and

MPIE bits

Set CKE1 and CKE0 bits in SCR

(leaving TE and RE bits

cleared to 0)

Clear TE and RE bits

to 0 in SCR

(1)

(2)

(3)

(4)

Set the clock source in SCR. Clear the

RIE, TIE, TEIE, MPIE, TE, and RE bits to

0. If clock output is selected in

asynchronous mode, clock output starts

immediately after the setting is made in

SCR.

Select the communication format in SMR.

Write the value corresponding to the bit

rate in BRR.

This step is not necessary when an

external clock is used.

Wait for at least the interval required to

transmit or receive one bit, then set the

TE or RE bit to 1 in SCR. Set the RIE,

TIE, TEIE, and MPIE bits as necessary.

Setting the TE or RE bit enables the SCI

to use the TxD or RxD pin.

Figure 13.4 Sample Flowchart for SCI Initialization

H8/3028F Datasheet(PDF) 515 Page - Renesas Technology Corp

H8/3028F Datasheet(HTML) 515 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL