參數(shù)資料
型號(hào): MB90F543GPFV
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 16-bit Proprietary Microcontroller
中文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, LQFP-100
文件頁(yè)數(shù): 19/67頁(yè)
文件大?。?/td> 746K
代理商: MB90F543GPFV
MB90540/540G/545/545G Series
19
(12) Indeterminate outputs from ports 0 and 1 (MB90F543/F549/V540/V540G only)
During oscillation setting time of step-down circuit (during a power-on reset) after the power is turned on, the
outputs from ports 0 and 1 become following state.
If RST pin is “H”, the outputs become indeterminate.
If RST pin is “L”, the outputs become high-impedance.
Pay attention to the port output timing shown as follow.
Oscillation setting time*
2
Power-on reset*
1
Period of indeterminated
V
CC
(Power-supply pin)
PONR (power-on reset) signal
RST (external asynchronous reset) signal
RST (internal reset) signal
Oscillation clock signal
KA (internal operation clock A) signal
KB (internal operation clock B) signal
PORT (port output) signal
*1 : Power-on reset time : Period of “clock frequency
×
2
17
” (Clock frequency of 16 MHz : 8.19 ms)
*2 : Oscillation setting time : Period of “clock frequency
×
2
18
” (Clock frequency of 16 MHz : 16.38 ms)
RST pin is “H”
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