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参数资料
| 型号： | MB90F553APF |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | PLASTIC, QFP-100 |
| 文件页数： | 9/61页 |
| 文件大小： | 687K |
| 代理商： | MB90F553APF |
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MB90550A/550B Series
17
11. Initialization
In the device, there are internal registers which is initialized only by a power-on reset. To initialize these registers
turning on the power again.
12. Return from standby state
If the power-supply voltage goes below the standby RAM holding voltage in the standby state, the device may
fail to return from the standby state. In this case, reset the device via the external reset pin to return to the normal
state.
13. Precautions for Use of ’DIV A, Ri,’ and ’DIVW A, Ri’ Instructions
The signed multiplication-division instructions ’DIV A, Ri,’ and ’DIVW A, RWi’ should be used when the corre-
sponding bank registers (DTB, ADB, USB, SSB) are set to value ’00h.’ If the corresponding bank registers (DTB,
ADB, USB, SSB) are set to a value other than ’00h,’ the remainder obtained after the execution of the instruction
will not be placed in the instruction operand register.
14. Using of REALOS
The use of EI2OS is not possible the REALOS real time operating system.
15. Caution on Operations during PLL Clock Mode
If the PLL clock mode is selected, the microcontroller attempt to be working with the self-oscillating circuit even
when there is no external oscillator or external clock input is stopped.
Performance of this operation, however, cannot be guaranteed.
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