ST6200C ST6201C ST6203C
STOP MODE (Cont’d)
Figure 22. STOP Mode Flowchart
STOP INSTRUCTION
EXCTNL
1
VALUE 1)
0
0
LEVEL
ON
NMI PIN
ENABLE WATCHDOG
DISABLE
OSCILLATOR
Off
1
Clock to PERIPHERALS2) No
Clock to CPU
No
OSCILLATOR
On
Clock to PERIPHERALS Yes
Clock to CPU
No
N
Y
RESET
N
INTERRUPT
Y
N
N
INTERRUPT 3)
RESET
Y
Y
OSCILLATOR
Restart
Clock to PERIPHERALS Yes
Clock to CPU
Yes
2048
CLOCK CYCLE DELAY
OSCILLATOR
On
Clock to PERIPHERALS Yes
Clock to CPU
Yes
FETCH RESET VECTOR
OR SERVICE INTERRUPT
Notes:
1. EXCTNL is an option bit. See option byte section for more details.
2. Peripheral clocked with an external clock source can still be active.
3. Only some specific interrupts can exit the MCU from STOP mode (such as external interrupt). Refer to
the Interrupt Mapping table for more details.
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