H8SSLASH2214 datasheet(529/936 Pages) RENESAS

529 / 936 page

Section 12 Serial Communication Interface (SCI)

Rev.4.00 Sep. 18, 2008 Page 469 of 872

REJ09B0189-0400

Bit 5—Overrun Error (ORER): Indicates that an overrun error occurred during reception,

causing abnormal termination.

Bit 5

ORER

Description

[Clearing condition]

(Initial value)*

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

[Setting condition]

• When the next serial reception is completed while RDRF = 1*2

Notes: 1. The ORER flag is not affected and retains its previous state when the RE bit in SCR is

cleared to 0.

The receive data prior to the overrun error is retained in RDR, and the data received

subsequently is lost. Also, subsequent serial reception cannot be continued while the

ORER flag is set to 1. In clocked synchronous mode, serial transmission cannot be

continued, either.

Bit 4—Framing Error (FER): Indicates that a framing error occurred during reception in

asynchronous mode, causing abnormal termination.

Bit 4

FER

Description

[Clearing condition]

(Initial value)*

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

[Setting condition]

• When the SCI checks whether the stop bit at the end of the receive data when

reception ends, and the stop bit is 0 *

Notes: 1. The FER flag is not affected and retains its previous state when the RE bit in SCR is

cleared to 0.

2. In 2-stop-bit mode, only the first stop bit is checked for a value of 0; the second stop bit

is not checked. If a framing error occurs, the receive data is transferred to RDR but the

RDRF flag is not set. Also, subsequent serial reception cannot be continued while the

FER flag is set to 1. In clocked synchronous mode, serial transmission cannot be

continued, either.

H8S/2214 数据表(PDF) 529 Page - Renesas Technology Corp

H8S/2214 数据表(HTML) 529 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

数据表下载