參數(shù)資料
型號: ST72T85A5Q6
廠商: 意法半導(dǎo)體
英文描述: 8-BIT MCU FOR RDS WITH 48K ROM, 3K RAM, ADC, TWO TIMERS, TWO SPIs, I2C AND SCI INTERFACES
中文描述: 8位微控制器48,000鐵路發(fā)展策略光盤,3K內(nèi)存,ADC,兩個(gè)定時(shí)器,2個(gè)SPI,I2C和脊髓損傷接口
文件頁數(shù): 22/117頁
文件大小: 748K
代理商: ST72T85A5Q6
22/117
ST7285C
3.6 POWER SAVING MODES
3.6.1 Slow Mode
The following Power Saving mode may be select-
ed by setting the relevant bits in the Miscellaneous
register as detailed in Section3.2.
In Slow Mode, the oscillator frequency can be di-
vided by 4, 8, 16 or 32 rather than by 2. The CPU
and peripherals are clocked at this lower frequen-
cy, and therefore the RDS filter cannot operate
correctly in this mode. SLOW mode is used to re-
duce power consumption, and enables the user to
adapt clock frequency to available supply voltage.
Figure 11. Wait Mode Flow Chart
3.6.2 Wait Mode
WAIT mode places the MCU in a low power con-
sumption mode by stopping the CPU. All peripher-
als remain active. During WAIT mode, the I bit (CC
Register) is cleared, so as to enable all interrupts.
All other registers
and memory remain un-
changed. The MCU will remain in WAIT mode until
an Interrupt or Reset occurs, whereupon the Pro-
gram Counter branches to the starting address of
the Interrupt or Reset Service Routine.
Refer to Figure 11 below.
WAIT
Y
VR02062D
N
Y
Y
N
EXTERNAL
INTERRUPT
RESET
RESTART
PROCESSORCLOCK
FETCHRESET
VECTOROR
SERVICEINTERRUPT
PERIPHERAL
INTERRUPT
N
ACTIVE OSCILLATOR
AND PERIPHERALS
CLOCKS ACTIVE
PROCESSORCLOCK
STOPPED
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