ST72325AR7-Auto datasheet(239/243 Pages) STMICROELECTRONICS

tên linh kiện	ST72325AR7-Auto

Giải thích chi tiết về linh kiện	SCI asynchronous serial interface

PDF	243 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

Logo

239 / 243 page

Obsolete

Product(s)

- Obsolete

Product(s)

ST72325xxx-Auto

Known limitations

Doc ID 13770 Rev 3

239/243

jrne OUT

call call_routine

; call the interrupt routine

RIM

OUT:

RIM

JP while_loop

.call_routine

; entry to call_routine

PUSH A

PUSH X

PUSH CC

.ext1_rt

; entry to interrupt routine

LD A,#$00

LD sema,A

IRET

22.1.3

Clearing active interrupts outside interrupt routine

When an active interrupt request occurs at the same time as the related flag is being

cleared, an unwanted reset may occur.

Note:

Clearing the related interrupt mask will not generate an unwanted reset.

Concurrent interrupt context

The symptom does not occur when the interrupts are handled normally, that is, when:

●

The interrupt flag is cleared within its own interrupt routine

●

The interrupt flag is cleared within any interrupt routine

●

The interrupt flag is cleared in any part of the code while this interrupt is disabled

If these conditions are not met, the symptom can be avoided by implementing the following

sequence:

Perform SIM and RIM operation before and after resetting an active interrupt request.

Example:

SIM

Reset interrupt flag

RIM

Nested interrupt context

ST72325AR7-Auto bảng dữ liệu(PDF) 239 Page - STMicroelectronics

ST72325AR7-Auto bảng dữ liệu(HTML) 239 Page - STMicroelectronics

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

bảng dữ liệu tải về

Link URL