參數(shù)資料
型號: MC68HC11A1VFU2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Single-Chip Microcontroller
中文描述: 8-BIT, 2 MHz, MICROCONTROLLER, PQFP64
封裝: QFP-64
文件頁數(shù): 92/158頁
文件大?。?/td> 503K
代理商: MC68HC11A1VFU2
MOTOROLA
9-12
RESETS, INTERRUPTS, AND LOW POWER MODES
MC68HC11A8
TECHNICAL DATA
9
Figure 9-4 Processing Flow Out of Resets (Sheet 1 of 2)
2A
BIT X IN
CCR = 1
Y
N
XIRQ
PIN LOW
Y
N
BEGIN INSTRUCTION
SEQUENCE
1A
STACK CPU
REGISTERS
SET BITS
I
AND
X
FETCH VECTOR
$FFF4, $FFF5
SET BITS
S
,
I
, AND
X
RESET MCU
HARDWARE
POWER-ON RESET
(POR)
EXTERNAL RESET
CLOCK MONITOR FAIL
(WITH CME = 1)
COP WATCHDOG
TIMEOUT
(WITH NOCOP = 0)
DELAY 4064 E CYCLES
LOAD PROGRAM COUNTER
WITH CONTENTS OF
$FFFE, $FFFF
(VECTOR FETCH)
LOAD PROGRAM COUNTER
WITH CONTENTS OF
$FFFC, $FFFD
(VECTOR FETCH)
LOAD PROGRAM COUNTER
WITH CONTENTS OF
$FFFA, $FFFB
(VECTOR FETCH)
HIGHEST
PRIORITY
LOWEST
PRIORITY
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