mc68hc05x4dw Freescale Semiconductor, Inc, mc68hc05x4dw Datasheet - Page 47

• Manufacturer Part Number: mc68hc05x4dw
• Description: Xc68hc705x4 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

1-resets
Contents
Resets
Resets, Interrupts and Low Power Modes
Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
The MCU can be reset in four ways: by the initial power-on reset
function, by an active low input to the RESET pin, by an opcode fetch
from an illegal address, and by a COP watchdog timer reset. See
Figure
Freescale Semiconductor, Inc.
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
RESET pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Illegal address reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Computer operating properly (COP) reset . . . . . . . . . . . . . . . . . . . 49
Non-maskable software interrupt (SWI) . . . . . . . . . . . . . . . . . . . . . 50
Maskable hardware interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
MCAN interrupt (CIRQ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Hardware controlled interrupt sequence . . . . . . . . . . . . . . . . . . . . . 52
STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
WAIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Data retention mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
For More Information On This Product,
Resets, Interrupts and Low Power Modes
1, below.
Go to: www.freescale.com
General Description
MC68HC05X4 Rev 1.0