STR720 datasheet(175/401 Pages) STMICROELECTRONICS

부품명	STR720

상세설명	ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES

PDF	401 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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175 / 401 page

STR720 - UART

175/401

16.3.6

Interrupt control

The ASC has a single interrupt coming out of it, called ASC_interrupt. The status bits in the

ASC-Status register determine the cause of the interrupt. ASC_interrupt will go high when a

status bit is 1 (high) and the corresponding bit in the ASCIntEnable register is 1 (see

Figure 22).

Note: The ASCStatus register is read only. The Status bits can only be cleared by operating

on the FIFOs. The RxFIFO and TxFIFO can be reset by writing to the ASCRxReset and

ASCTxReset registers.

300

4166.667

4167

1047

0.008%

16666.667

16667

411B

0.002%

Figure 22. UART interrupt request

Table 44. Baud rates with fAPB = 20 MHz

Baud rate

Reload value

(exact)

Reload value

(integer)

Reload value

(hex)

Deviation error

TimeoutIdle

TimeoutIdle IE

TimeoutNotEmpty

TimeoutNotEmpty IE

OverrunError

OverrunError IE

FrameError

FrameError IE

ParityError

ParityError IE

TxHalfEmpty

TxHalfEmpty IE

TxEmpty

TxEmpty IE

RxBufNotEmpty

RxBufNotEmpty IE

ASC_interrupt

RxHalfFull

RxHalfFull IE

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