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ST7LUS5 bảng dữ liệu(PDF) 46 Page - STMicroelectronics

tên linh kiện ST7LUS5
Giải thích chi tiết về linh kiện  8-bit low cost, low pin-count MCU for automotive,with single voltage Flash memory, ADC, timers
PDF  124 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7LUS5 bảng dữ liệu(HTML) 46 Page - STMicroelectronics

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Power saving modes
ST7LUS5, ST7LU05, ST7LU09
46/124
Figure 18.
Wait mode flowchart
1.
Before servicing an interrupt, the CC register is pushed on the stack. The I bit of the CC register is set
during the interrupt routine and cleared when the CC register is popped.
8.4
Active Halt and Halt modes
Active Halt and Halt modes are the two lowest power consumption modes of the MCU. They
are both entered by executing the ‘HALT’ instruction. The decision to enter either in Active
Halt or Halt mode is given by the LTCSR/ATCSR register status as shown in the following
table:
WFI INSTRUCTION
RESET
INTERRUPT
Y
N
N
Y
CPU
OSCILLATOR
PERIPHERALS
IBIT
ON
ON
0
OFF
FETCH RESET VECTOR
OR SERVICE INTERRUPT
CPU
OSCILLATOR
PERIPHERALS
IBIT
ON
OFF
0
ON
CPU
OSCILLATOR
PERIPHERALS
IBIT
ON
ON
X (1)
ON
64 CPU CLOCK CYCLE
DELAY
Table 21.
LTC/ATC low power mode selection
LTCSR TBIE bit
ATCSR OVFIE bit
ATCSRCK1 bit
ATCSRCK0 bit
Meaning
0x
x0
Active Halt mode
disabled
00
x
x
01
11
1x
x
x
Active Halt mode
enabled
x1
0
1



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