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| 型號(hào)： | COP8SGR928L9 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 8-Bit CMOS ROM Based and OTP Microcontrollers with 8k to 32k Memory, Two Comparators and USART |
| 中文描述： | 8位的CMOS基于ROM和OTP微控制器具有8K到32K的內(nèi)存，2個(gè)比較器和USART |
| 文件頁數(shù)： | 33/62頁 |
| 文件大小： | 913K |
| 代理商： | COP8SGR928L9 |
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10.0 Interrupts (Continued)
Programming Example: External Interrupt
PSW
=00EF
CNTRL
=00EE
RBIT
0,PORTGC
RBIT
0,PORTGD
; G0 pin configured Hi-Z
SBIT
IEDG, CNTRL
; Ext interrupt polarity; falling edge
SBIT
EXEN, PSW
; Enable the external interrupt
SBIT
GIE, PSW
; Set the GIE bit
WAIT:
JP
WAIT
; Wait for external interrupt
.
.=0FF
; The interrupt causes a
VIS
; branch to address 0FF
; The VIS causes a branch to
;interrupt vector table
.
.=01FA
; Vector table (within 256 byte
.ADDRW SERVICE
; of VIS inst.) containing the ext
; interrupt service routine
.
INT_EXIT:
RETI
.
SERVICE:
RBIT
EXPND, PSW
; Interrupt Service Routine
; Reset ext interrupt pend. bit
.
JP
INT_EXIT
; Return, set the GIE bit
COP8SG
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