XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 81

• Manufacturer Part Number: XC68HC08KH12
• Description: MICROCONTROLLER
• Manufacturer: Motorola

7.7.2 Stop Mode
MC68HC(7)08KH12
MOTOROLA
NOTE:
—
Rev. 1.0
In stop mode, the SIM counter is reset and the system clocks are
disabled. An interrupt request from a module can cause an exit from stop
mode. Stacking for interrupts begins after the selected stop recovery
time has elapsed. Reset or break also causes an exit from stop mode.
The SIM disables the oscillator signals (CGMOUT and CGMXCLK) in
stop mode, stopping the CPU and peripherals. Stop recovery time is
selectable using the SSREC bit in the configuration register (CONFIG).
If SSREC is set, stop recovery is reduced from the normal delay of 4096
CGMXCLK cycles down to 32. This is ideal for applications using canned
oscillators that do not require long startup times from stop mode.
External crystal applications should use the full stop recovery time by
clearing the SSREC bit.
EXITSTOPWAIT
NOTE: EXITSTOPWAIT = RST pin OR CPU interrupt OR break interrupt
CGMXCLKCGMXCLK
RST
IAB
IDB
IAB
IDB
Figure 7-16. Wait Recovery from Interrupt or Break
System Integration Module (SIM)
Figure 7-17. Wait Recovery from Internal Reset
$A6
$A6
$6E0B
$A6
$6E0B
$A6
$A6
$A6
Cycles
$6E0C
32
$01
$00FF
Cycles
32
$0B
System Integration Module (SIM)
$00FE
$6E
RST V CT H RST V CT L
$00FD
Advance Information
Low-Power Modes
$00FC
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