參數(shù)資料
型號(hào)： MB90F867ASPFV
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： 16-bit Proprietary Microcontroller CMOS
中文描述： 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, LQFP-100
文件頁(yè)數(shù)： 20/62頁(yè)
文件大?。?/td> 412K
代理商： MB90F867ASPFV
MB90860A Series
20
11. Notes on Energization
To prevent the internal regulator circuit from malfunctioning, set the voltage rise time during energization at
50
μ
s or more (0.2 V to 2.7 V)
12. Stabilization of power supply voltage
A sudden change in the supply voltage may cause the device to malfunction even within the specified V
CC
supply
voltage operating range. Therefore, the V
CC
supply voltage should be stabilized.
For reference, the supply voltage should be controlled so that V
CC
ripple variations (peak-to-peak value) at
commercial frequencies (50 Hz to 60 Hz) fall below 10
%
of the standard V
CC
supply voltage and the coefficient
of fluctuation does not exceed 0.1 V/ms at instantaneous power switching.
13. Initialization
In the device, there are internal registers which are initialized only by a power-on reset. To initialize these registers,
turn on the power again.
14. Port 0 to port 3 output during Power-on (External-bus mode)
As shown below, when power is turned on in External-Bus mode, there is a possibility that output signal of
Port 0 to Port 3 might be unstable.
15. Flash security Function
The security byte is located in the area of the flash memory.
If protection code 01
H
is written in the security byte, the flash memory is in the protected state by security.
Therefore please do not write 01
H
in this address if you do not use the security function.
Please refer to following table for the address of the security byte.
Flash memory size
Address for security byte
MB90F867A (S)
Embedded 1 Mbit Flash Memory
FE0001
H
V 5
DD
DD
V 3
Port0 to Port3
Port0 to 3 outputs
might be unstable
Port0 to 3 outputs = Hi-Z
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