MC68HC705T16 MOTOROLA [Motorola, Inc], MC68HC705T16 Datasheet - Page 35

• Manufacturer Part Number: MC68HC705T16
• Description: High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
• Manufacturer: MOTOROLA [Motorola, Inc]

4.2.1
The following three functions are not strictly interrupts, however, they are tied very closely to the
interrupts. These functions are RESET, STOP, WAIT.
MC68HC05T16
Multi-Function
M-Bus Status
Timer Status
PAC Control
OSD Status
Register
Timer
1) RESET
2) STOP
3) WAIT
–
–
–
Hardware Controlled Sequences
R3CF/R2CF/
R1CF/R0CF
OC0F/OC1F
Flag Name
SELTED
ALOST
VFLB
PAOF
MCF
RTIF
TOF
TOF
ICF
The RESET input pin causes the program to go to its starting
address. This address is specified by the contents of memory
locations $FFFE and $FFFF. The interrupt mask of the condition
code register is also set. Most parts of the MCU is configured to
some known state as described in Table 4-1.
The STOP instruction causes the oscillator to be turned off and
the processor “sleeps” until an external interrupt (IRQ) or RESET
occurs. See section 12 on Low Power Modes.
The WAIT instruction causes all processor clocks to stop, but
leaves the Timer and PAC clocks running. This “rest” state of the
processor can be exited by RESET, an external interrupt (IRQ),
or any of the interrupts described above. There are no special
wait vectors for these individual interrupts. See section 12 on
Low Power Modes.
–
–
–
Table 4-2 Reset/Interrupt Vector Addresses
RESETS AND INTERRUPTS
Pulse Accumulator Overflow
OSD Row Completion
Addressed as Slave
Real Time Interrupt
Transfer Complete
External Interrupt
Output Compare
Vertical Flyback
Arbitration Loss
Timer Overflow
Timer Overflow
Input Capture
Interrupt
Software
Reset
CPU Interrupt
RESET
M-BUS
TIMER
OSD
MFT
SWI
PAC
IRQ
Vector Address
$FFFC-$FFFD
$FFFE-$FFFF
$FFFA-$FFFB
$FFF8-$FFF9
$FFF6-$FFF7
$FFF4-$FFF5
$FFF2-$FFF3
$FFF0-$FFF1
MOTOROLA
TPG
4-5
4