參數(shù)資料
型號: ST72651R6
英文描述: SODIMM MEMORY MODULE, 64MB, INDUSTRIAL TEMP
中文描述: ST7的-低功耗。全速USB 8位32K快閃微控制器。 5K內(nèi)存。閃存卡的I /樓計時器。脈寬調(diào)制。 ADC的。的I2C
文件頁數(shù): 110/166頁
文件大?。?/td> 2089K
代理商: ST72651R6
ST7265x
48/166
POWER SAVING MODES (Cont’d)
8.3 HALT MODE
The HALT mode is the MCU lowest power con-
sumption mode. The HALT mode is entered by ex-
ecuting the HALT instruction. The internal oscilla-
tor is then turned off, causing all internal process-
ing to be stopped, including the operation of the
on-chip peripherals.
When entering HALT mode, the I[1:0] bits in the
Condition Code Register are cleared. Thus, any of
the external interrupts (ITi or USB end suspend
mode), are allowed and if an interrupt occurs, the
CPU clock becomes active.
The MCU can exit HALT mode on reception of ei-
ther an external interrupt on ITi, an end suspend
mode interrupt coming from USB peripheral, an
SPI interrupt or a reset. The oscillator is then
turned on and a stabilization time is provided be-
fore releasing CPU operation. The stabilization
time is 512 CPU clock cycles.
After the start up delay, the CPU continues opera-
tion by servicing the interrupt which wakes it up or
by fetching the reset vector if a reset wakes it up.
Figure 34. HALT Mode Flow Chart
N
EXTERNAL
INTERRUPT*
RESET
HALT INSTRUCTION
FETCH RESET VECTOR
OR SERVICE INTERRUPT
DELAY
CPU CLOCK
OSCILLATOR
PERIPH. CLOCK
I1:0] BITS
ON
SET
ON
CPU CLOCK
OSCILLATOR
PERIPH. CLOCK
I1:0] BITS
OFF
CLEARED
OFF
Y
Note: Before servicing an interrupt, the CC
register is pushed on the stack. TheI1:0] bits are
set during the interrupt routine and cleared
when the CC register is popped.
(Refer to Figure 20 and
1
相關(guān)PDF資料
PDF描述
ST72651R6T1 ST7 - LOW-POWER. FULL-SPEED USB 8-BIT MCU WITH 32K FLASH. 5K RAM. FLASH CARD I/F. TIMER. PWM. ADC. I2C
ST72652R4T1 ST7 - LOW-POWER. FULL-SPEED USB 8-BIT MCU WITH 32K FLASH. 5K RAM. FLASH CARD I/F. TIMER. PWM. ADC. I2C
ST7271J1B1 8-BIT MICROCONTROLLER
ST7271N1B1 8-BIT MICROCONTROLLER
ST7271N2 Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST7265X-EVAL/MS 制造商:STMicroelectronics 功能描述:ST6 EVAL BD - Bulk
ST7265X-EVAL/PFD 制造商:STMicroelectronics 功能描述:USB FLASH EVAL - Bulk
ST7266 制造商:6940 功能描述:ST7266
ST7267C8T1L 制造商:STMicroelectronics 功能描述:
ST72681/R12 制造商:STMicroelectronics 功能描述:CONTROLLER FOR HIGH-PERFORMANCE BUS-POWERED USB 2.0 FLASH DR - Trays