mc68hc05pv8 Freescale Semiconductor, Inc, mc68hc05pv8 Datasheet - Page 91

• Manufacturer Part Number: mc68hc05pv8
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

6.6 WAIT Mode
MC68HC(8)05PV8/A — Rev. 1.9
N
PORT A OR C
HVI, LVI
IRQ
The WAIT instruction places the MCU in a low-power consumption
mode. All CPU action is suspended, but the core timer, the 16-bit timer
(controlled by TOFF bit) and the PWM will or can remain active. An
interrupt, if enabled, from the core timer or any peripheral still active in
WAIT mode causes the MCU to exit WAIT mode.
Y
N
Freescale Semiconductor, Inc.
Figure 6-2 STOP and WAIT Flowcharts
1. FETCH RESET
2. SERVICE
STOP OSCILLATOR
WAIT FOR TIME
AND ALL CLOCKS
OR HVR OR LVR
OSCILLATOR
VECTOR OR
INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO
INTERRUPT
ROUTINE
For More Information On This Product,
DELAY TO
CLEAR I BIT
TURN ON
STABILIZE
RESET
STOP
Y
Go to: www.freescale.com
Operating Modes
TIMER CLOCK ACTIVE
PROCESSOR CLOCKS
OSCILLATOR ACTIVE
1. FETCH RESET
2. SERVICE
OR HVR OR LVR
VECTOR OR
INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO
INTERRUPT
ROUTINE
PROCESSOR
STOPPED
RESTART
CLOCK
RESET
WAIT
Y
PORT A OR C
HVI, LVI
N
IRQ
Y
CORE TIMER
16B TIMER,
INTERRUPT
Y
N
Y
N
Operating Modes
Technical Data
WAIT Mode