MC68HC11E Motorola, MC68HC11E Datasheet - Page 102

• Manufacturer Part Number: MC68HC11E
• Description: Microcontrollers
• Manufacturer: Motorola

Resets and Interrupts
Data Sheet
102
DELAY 4064 E CYCLES
POWER-ON RESET
(POR)
LOAD PROGRAM COUNTER
WITH CONTENTS OF
(VECTOR FETCH)
Figure 5-5. Processing Flow Out of Reset (Sheet 1 of 2)
PRIORITY
$FFFE, $FFFF
HIGHEST
Freescale Semiconductor, Inc.
For More Information On This Product,
EXTERNAL RESET
1A
Go to: www.freescale.com
Resets and Interrupts
Y
BEGIN INSTRUCTION
SET BITS S, I, AND X
RESET MCU
HARDWARE
SEQUENCE
PIN LOW?
CCR = 1?
BIT X IN
XIRQ
2A
N
N
LOAD PROGRAM COUNTER
CLOCK MONITOR FAIL
WITH CONTENTS OF
(VECTOR FETCH)
(WITH CME = 1)
$FFFC, $FFFD
Y
SET BITS I AND X
FETCH VECTOR
$FFF4, $FFF5
REGISTERS
STACK CPU
LOAD PROGRAM COUNTER
M68HC11E Family — Rev. 5
WITH CONTENTS OF
(WITH NOCOP = 0)
COP WATCHDOG
(VECTOR FETCH)
$FFFA, $FFFB
TIMEOUT
PRIORITY
LOWEST
MOTOROLA