MC68HC705 MOTOROLA [Motorola, Inc], MC68HC705 Datasheet - Page 182

• Manufacturer Part Number: MC68HC705
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

PROCESSOR
INTERNAL
INTERNAL
INTERNAL
ADDRESS
*
**
***
CLOCK
RESET
OSC1
DATA
BUS
BUS
V
OSC1 line is not meant to represent frequency. It is only used to represent time.
Internal timing signal and bus information are not available externally.
The next rising edge of the internal processor clock following the rising edge of RESET initiates the reset sequence.
DD
*
**
***
t
OXOV
V
DD
THRESHOLD (1-2 V TYPICAL)
t
VDDR
1FFE
NEW
PCH
Figure 13-7. Power-On Reset and External Reset Timing Diagram
t
CYC
1FFF
NEW
PCL
NEW PC
CODE
OP
* * *
t
1FFE
RL
1FFE
1FFE
1FFE
PCH
1FFF
PCL
NEW PC
CODE
OP