MC68HC705J1ACPE Datasheet, PDF (70/162 Pages) Freescale Semiconductor, Inc – Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.
Resets and Interrupts
4.3 Resets
A reset immediately stops the operation of the instruction being
executed, initializes certain control and status bits, and loads the
program counter with a user-defined reset vector address. These
sources can generate a reset:
• Power-on reset (POR) circuit
• RESET pin
• Computer operating properly (COP) watchdog
• Illegal address
V_DD
RESET PIN
ILLEGAL ADDRESS
COP WATCHDOG
POWER-ON RESET
INTERNAL CLOCK
D
S
RST
Q
CK
RESET
LATCH
Figure 4-1. Reset Sources
TO CPU AND
PERIPHERAL
MODULES
Technical Data
MC68HC705J1A — Rev. 4.0
Resets and Interrupts
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