st72324bk STMicroelectronics, st72324bk Datasheet - Page 47

• Manufacturer Part Number: st72324bk
• Description: 3 V/5 V Range 8-bit Mcu With 4/8 Kbyte Rom, 10-bit Adc, Four Timers And Spi
• Manufacturer: STMicroelectronics

ST72323 ST72323L
Figure 24. Halt mode flowchart
1. WDGHALT is an option bit. See
2. Peripheral clocked with an external clock source can still be active.
3. Only some specific interrupts can exit the MCU from Halt mode (such as external interrupt). Refer to
4. Before servicing an interrupt, the CC register is pushed on the stack. The I[1:0] bits of the CC register are
Table 9: Interrupt mapping on page 36
set to the current software priority level of the interrupt routine and recovered when the CC register is
popped.
N
WDGHALT
Watchdog
(MCCSR.OIE=0)
Halt instruction
Reset
Option byte 0
1
Interrupt
Y
for more details.
(1)
(3)
and
Enable
Option byte 1
0
256 or 4096 CPU clock
Oscillator
Peripherals
CPU
I[1:0] bits
Oscillator
Peripherals
CPU
I[1:0] bits
Oscillator
Peripherals
CPU
I[1:0] bits
N
Fetch reset vector
or service interrupt
cycle
Y
Reset
Watchdog
sections for more details.
(2)
delay
Disable
XX
XX
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
10
(4)
(4)
Power saving modes
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