參數(shù)資料
型號(hào)： MB91307RPFV
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： 32-Bit Microcontroller
中文描述： 32-BIT, 66 MHz, RISC MICROCONTROLLER, PQFP120
封裝： LEAD FREE, PLASTIC, LQFP-120
文件頁(yè)數(shù)： 17/96頁(yè)
文件大?。?/td> 963K
代理商： MB91307RPFV
MB91307 Series
17
Low-power consumption modes
To enter the standby mode, use the synchronous standby mode (set with the SYNCS bit as bit 8 in the
TBCR, or time-base counter control register) and be sure to use the following sequence:
(LDI
#value_of_standby, R0)
(LDI
#_STCR, R12)
STB
R0, @R12
; Write to standby control register (STCR)
LDUB
@R12, R0
; Read STCR for synchronous standby
LDUB
@R12, R0
; Read STCR again for dummy read
NOP
; NOP x 5 for timing adjustment
NOP
NOP
NOP
NOP
Set the I-flag and the ILM and ICR registers to branch to an interrupt handler when the interrupt handler
triggers the microcontroller to return from the standby mode.
If you use the monitor debugger, follow the precautions below:
Do not set a breakpoint within the above array of instructions.
Do not single-step the above array of instructions.
Current at power-on (only for MB91V307R)
About 300 mA of power supply current flows when the power is turned on with INIT set to 0.
Set INIT to 1 to stop the overcurrent flowing. After that, the overcurrent will not flow even if INIT is set to 0.
Watchdog timer
The watchdog timer function of this model monitors that a program delays a reset within a certain period of time
and resets the CPU if the program fails to delay it, for example, because the program runs out of control. Once
the watchdog timer function is enabled, therefore, the watchdog timer countinues to operate until a reset takes
place.
An exception, for example during stop, sleep and DMA transfer modes, is the automatic delaying of a reset under
a condition in which the CPU stops program execution.
Note, however, that a watchdog reset may not occur in the above state caused when the system runs out of
control. If this is the case, use the external INIT pin to cause a reset (INIT).
MB91307 series
X0
X1
Using external clock (normal)
Note : Stop mode (oscillation stop mode) cannot be used.
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