參數(shù)資料
型號(hào)： MB90V590ACR
元件分類： 微控制器/微處理器
英文描述： 16-BIT, 16 MHz, MICROCONTROLLER, CPGA256
封裝： CERAMIC, PGA-256
文件頁(yè)數(shù)： 7/52頁(yè)
文件大?。?/td> 718K
代理商： MB90V590ACR
MB90590/590G Series
15
(9) N.C. Pin
The N.C. (internally connected) pin must be opened for use.
(10) Notes on Energization
To prevent the internal regulator circuit from malfunctioning, set the voltage rise time during energization at 50
s or more (0.2 V to 2.7 V).
(11) Indeterminate outputs from ports 0 and 1
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
Vcc (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
Period of indeterminated
*1:Power-on reset time: Period of “clock frequency
× 217” (Clock frequency of 16 MHz: 8.19 ms)
*2:Oscillation setting time: Period of “clock frequency
× 218” (Clock frequency of 16 MHz: 16.38ms)
RST pin is “H”
Oscillation setting time2
Power-on reset1
Vcc (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
High-impedance
*1:Power-on reset time: Period of “clock frequency
× 217” (Clock frequency of 16 MHz: 8.19 ms)
*2:Oscillation setting time: Period of “clock frequency
× 218” (Clock frequency of 16 MHz: 16.38ms)
RST pin is “L”
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