MC68HC08JB1 Datasheet, PDF (90/216 Pages) Motorola, Inc – Microcontrollers

8.6.2.1 Interrupt Status Register 1
Address: $FE04
Bit 7
6
5
4
3
2
1
Bit 0
Read: IF6
IF5
IF4
IF3
IF2
IF1
0
0
Write: R
R
R
R
R
R
R
R
Reset: 0
0
0
0
0
0
0
0
R = Reserved
Figure 8-12. Interrupt Status Register 1 (INT1)
IF6–IF1 — Interrupt Flags 1–6
These flags indicate the presence of interrupt requests from the
sources shown in Table 8-4.
1 = Interrupt request present
0 = No interrupt request present
Bit 0 and Bit 1 — Always read 0
8.6.3 Reset
All reset sources always have equal and highest priority and cannot be
arbitrated.
8.7 Low-Power Modes
Executing the WAIT or STOP instruction puts the MCU in a low-power-
consumption mode for standby situations. The SIM holds the CPU in a
non-clocked state. The operation of each of these modes is described
here. Both STOP and WAIT clear the interrupt mask (I) in the condition
code register, allowing interrupts to occur.
8.7.1 Wait Mode
Technical Data
90
In wait mode, the CPU clocks are inactive while the peripheral clocks
continue to run. Figure 8-13 shows the timing for wait mode entry.
MC68HC08JB1 — Rev. 2.1
Freescale Semiconductor