参数资料
型号: ST72C334N2TC
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
封装: 14 X 14 MM, ROHS COMPLIANT, TQFP-64
文件页数: 82/150页
文件大小: 3530K
代理商: ST72C334N2TC
ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto
37/150
POWER SAVING MODES (Cont’d)
10.3 WAIT MODE
Wait mode places the MCU in a low power con-
sumption mode by stopping the CPU.
This power saving mode is selected by calling the
WFI instruction.
All peripherals remain active. During Wait mode,
the I bit of the CC register is cleared, to enable all
interrupts. All other registers and memory remain
unchanged. The MCU remains 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.
The MCU will remain in Wait mode until a Reset or
an Interrupt occurs, causing it to wake up.
Refer to Figure 20.
Figure 20. Wait Mode Flowchart
Note:
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.
WFI INSTRUCTION
RESET
INTERRUPT
Y
N
Y
CPU
OSCILLATOR
PERIPHERALS
IBIT
ON
0
OFF
FETCH RESET VECTOR
OR SERVICE INTERRUPT
CPU
OSCILLATOR
PERIPHERALS
IBIT
ON
OFF
0
ON
CPU
OSCILLATOR
PERIPHERALS
IBIT
ON
X 1)
ON
4096 CPU CLOCK CYCLE
DELAY
相关PDF资料
PDF描述
ST72334N2TC/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64
ST72314J2TB/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
ST72C124J2TA 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72C334J4TC 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72334J2TA/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
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