参数资料
型号: MC68HC11A1VP2
厂商: ABILIS SYSTEMS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48
封装: PLASTIC, DIP-48
文件页数: 151/158页
文件大小: 3803K
代理商: MC68HC11A1VP2
RESETS, INTERRUPTS, AND LOW POWER MODES
MC68HC11A8
9-12
TECHNICAL DATA
9
Figure 9-4 Processing Flow Out of Resets (Sheet 1 of 2)
2A
BIT X IN
Y
N
XIRQ
Y
N
PIN LOW?
CCR = 1?
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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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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