参数资料
型号: ST7285C
厂商: 意法半导体
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铁路发展策略光盘,3K内存,ADC,两个定时器,2个SPI,I2C和脊髓损伤接口
文件页数: 23/117页
文件大小: 748K
代理商: ST7285C
23/117
ST7285C
POWER SAVING MODES
(Cont’d)
3.6.3 Halt Mode
The HALT instruction places the MCU in its lowest
power consumption mode. In HALT mode the in-
ternal oscillator is turned off, causing all internal
processing to be halted. During HALT mode, the I
bit in the CC Register is cleared so as to enable
External Interrupts.
All other registers and memory remain unaltered
and all Input/Output lines remain unchanged. This
state will endure until an External Interrupt (I1, I2,
I9, I10) or a Reset is generated, whereupon the in-
ternal oscillator is restarted. A delay of 4096 CPU
clock cycles is initiated prior to restarting the appli-
cation, in order to allow the oscillator to stabilize.
The External Interrupt or Reset causes the Pro-
gram Counter to be set to the address of the corre-
sponding Interrupt or Reset Service Routine.
Figure 12. Halt Mode Flow Chart
N
Y
VR02062E
N
EXTERNAL
INTERRUPT
HALT
Y
STOP OSCILLATOR
AND ALL CLOCKS
CLEARI-BIT
RESET
OSCILLATOR
IN SLOWMODE
TURN ON
OSCILLATOR
WAIT FOR 4096 CPU
CLOCK TIME DELAY
FETCH RESET
VECTOROR
SERVICEINTERRUPT
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