MC68HC05PV8 Datasheet, PDF (73/196 Pages) Freescale Semiconductor, Inc – Techinal Data - rev 1.9

Freescale Semiconductor, Inc.
Interrupts
Ambient Exception Interrupts
4.9 Ambient Exception Interrupts
There are three different interrupt flags that cause an environmental
exception interrupt whenever they are set and enabled. The interrupt
flags are in the reset/interrupt status register (INTSR), and the enable
bits are in the interrupt control register (INTCR). Any of these interrupts
vectors to the same interrupt service routine, located at the address
specified by the contents of memory location $3FF4 and $3FF5.
$0028 Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
0
0
0
ULPM
HTIE HVIE LVIE
Write:
Reset: 0
0
0
0
0
0
0
0
Figure 4-3 Interrupt Control Register (INTCR)
$0029 Bit 7
6
5
4
3
2
1
Bit 0
Read: RCON PC4CL
0
0
0
HTIF HVIF LVIF
Write:
Reset: NA
0
0
0
0
?
0
0
Figure 4-4 Interrupt Status Register (INTSR)
4.10 High Temperature Interrupt
HTIF – High Temperature Interrupt Flag
This bit is set if the die temperature is higher than the upper trip point
and cleared again if the die temperature falls below the lower trip point
of the HTI.
1 = The die temperature is higher than T_HTION
0 = The die temperature is lower than T_HTIOFF
MC68HC(8)05PV8/A — Rev. 1.9
Interrupts
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Technical Data