ST72361AR7 STMicroelectronics, ST72361AR7 Datasheet - Page 38
ST72361AR7
Manufacturer Part Number
ST72361AR7
Description
8-BIT MCU WITH FLASH OR ROM, 10-BIT ADC, 5 TIMERS, SPI, 2x LINSCI™
Manufacturer
STMicroelectronics
Datasheet
1.ST72361AR7.pdf
(225 pages)
Specifications of ST72361AR7
Hdflash Endurance
100 cycles, data retention 40 years at 85°C
5 Power Saving Modes
Halt, Auto Wake Up From Halt, Active Halt, Wait and Slow
- Current page: 38 of 225
- Download datasheet (8Mb)
ST72361
POWER SAVING MODES (Cont’d)
8.3 WAIT MODE
WAIT mode places the MCU in a low power con-
sumption mode by stopping the CPU.
This power saving mode is selected by calling the
‘WFI’ instruction.
All peripherals remain active. During WAIT mode,
the I[1:0] bits of the CC register are forced to ‘10’,
to enable all interrupts. All other registers and
memory remain unchanged. The MCU remains in
WAIT mode until an interrupt or RESET occurs,
whereupon the Program Counter branches to the
starting address of the interrupt or Reset service
routine.
The MCU will remain in WAIT mode until a Reset
or an Interrupt occurs, causing it to wake up.
Refer to
38/225
Figure 24
Figure 24. WAIT Mode Flow-chart
Note:
1. Before servicing an interrupt, the CC register is
pushed on the stack. The I[1:0] bits of the CC reg-
ister are set to the current software priority level of
the interrupt routine and recovered when the CC
register is popped.
WFI INSTRUCTION
N
INTERRUPT
Y
OR SERVICE INTERRUPT
FETCH RESET VECTOR
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
CYCLE DELAY
RESET
Y
XX
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
10
10
1)
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