參數(shù)資料
型號: ST72361AR6TA
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
封裝: 10 X 10 MM, ROHS COMPLIANT, PLASTIC, TQFP-64
文件頁數(shù): 161/224頁
文件大?。?/td> 4821K
代理商: ST72361AR6TA
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁當前第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁第208頁第209頁第210頁第211頁第212頁第213頁第214頁第215頁第216頁第217頁第218頁第219頁第220頁第221頁第222頁第223頁第224頁
ST72361-Auto
41/224
POWER SAVING MODES (Cont’d)
Halt Mode Recommendations
– Make sure that an external event is available to
wake up the microcontroller from Halt mode.
– When using an external interrupt to wake up the
microcontroller, reinitialize the corresponding I/O
as “Input Pull-up with Interrupt” before executing
the HALT instruction. The main reason for this is
that the I/O may be wrongly configured due to ex-
ternal interference or by an unforeseen logical
condition.
– For the same reason, reinitialize the level sensi-
tiveness of each external interrupt as a precau-
tionary measure.
– The opcode for the HALT instruction is 0x8E. To
avoid an unexpected HALT instruction due to a
program counter failure, it is advised to clear all
occurrences of the data value 0x8E from memo-
ry. For example, avoid defining a constant in
ROM with the value 0x8E.
– As the HALT instruction clears the interrupt mask
in the CC register to allow interrupts, the user
may choose to clear all pending interrupt bits be-
fore executing the HALT instruction. This avoids
entering other peripheral interrupt routines after
executing the external interrupt routine corre-
sponding to the wake-up event (reset or external
interrupt).
8.5 ACTIVE HALT MODE
ACTIVE HALT mode is the lowest power con-
sumption mode of the MCU with a real time clock
available. It is entered by executing the ‘HALT’ in-
struction when MCC/RTC interrupt enable flag
(OIE bit in MCCSR register) is set and when the
AWUEN bit in the AWUCSR register is cleared
The MCU can exit ACTIVE HALT mode on recep-
tion of the RTC interrupt and some specific inter-
34) or a RESET. When exiting ACTIVE HALT
mode by means of a RESET a 4096 or 256 CPU
cycle delay occurs (depending on the option byte).
After the start up delay, the CPU resumes opera-
tion by servicing the interrupt or by fetching the re-
set vector which woke it up (see Figure 28).
When entering ACTIVE HALT mode, the I[1:0] bits
in the CC register are are forced to ‘10b’ to enable
interrupts. Therefore, if an interrupt is pending, the
MCU wakes up immediately.
In ACTIVE HALT mode, only the main oscillator
and its associated counter (MCC/RTC) are run-
ning to keep a wake-up time base. All other periph-
erals are not clocked except those which get their
clock supply from another clock generator (such
as external or auxiliary oscillator).
The safeguard against staying locked in ACTIVE
HALT mode is provided by the oscillator interrupt.
Note: As soon as active halt is enabled, executing
a HALT instruction while the Watchdog is active
does not generate a RESET.
This means that the device cannot spend more
than a defined delay in this power saving mode.
MCCSR
OIE bit
Power Saving Mode entered when HALT
instruction is executed
0
HALT mode
1
ACTIVE HALT mode
相關PDF資料
PDF描述
ST72361AR9TC 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
ST72P361J4TA 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72F321BAR7TARE 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP64
ST72P321B(AR6)TCXXXE 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP64
ST72F324BJ2TATRE 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
相關代理商/技術參數(shù)
參數(shù)描述
ST72361K6T6 制造商:STMicroelectronics 功能描述:ROMLESS MICRO WITH 2 UART - Bulk
ST72371 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCUs WITH 16K ROM/OTP/EPROM,512 BYTES RAM, ADC, DAC (PWM), TIMER, I2C AND SCI
ST72371N4B1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCUs WITH 16K ROM/OTP/EPROM,512 BYTES RAM, ADC, DAC (PWM), TIMER, I2C AND SCI
ST72371N4B1/XXX 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|8-BIT|ST72 CPU|CMOS|SDIP|56PIN|PLASTIC
ST72371N4T1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCUs WITH 16K ROM/OTP/EPROM,512 BYTES RAM, ADC, DAC (PWM), TIMER, I2C AND SCI