參數(shù)資料
型號： MB90F884BHPMC
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 14 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù)： 16/80頁
文件大?。?/td> 2171K
代理商： MB90F884BHPMC
MB90880 Series
DS07-13743-5E
23
7.
Power-on and power-off sequence of A/D converter and analog input
Turn on the A/D converters (AVCC, AVRH) and analog inputs (AN0 to AN19) after turning on the digital power
supply (VCC) .
During power-off, turn off the digital power supply (VCC) after turning off the A/D converters and analog inputs
(AN0 to AN19) .
In this case, make sure that AVRH does not exceed AVCC during the power-on/power-off procedure.
Also make sure that the input voltage does not exceed AVCC when a pin which is also used as an analog input
is used as an input port.
8.
Handling power supply pins on A/D converter-mounted models
Make sure to achieve "AVCC
= AVRH = VCC" and "AVSS = VSS" in connecting the circuits, even when not using the
A/D converter function.
9.
Note on power-up
To prevent the internal regulator from malfunctioning, maintain the voltage rise time at 50
μs (between 0.2V and
2.7V) or more during power-up.
10. Stabilization of power supply
Even when the VCC power supply voltage is within the specified operating range, it may still cause the device to
malfunction, if the power supply changes rapidly. For stabilization reference, it is recommended to control the
supply voltage so that VCC ripple variations (P-P values) at commercial frequencies (50/60 Hz) fall below 10
%
of the standard VCC supply voltage and the coefficient of fluctuation does not exceed 0.1 V/ms at instantaneous
power switching.
11. Note of MB90F883B(S), MB90F884B(S)
Maximum operating frequency is 25 MHz.
MB90F883B(S) and MB90F884B(S) do not contain the flash security function or protect function against
erroneous write operation.
12. Note of MB90F883BH(S), MB90F884BH(S)
MB90F883BH(S) and MB90F884BH(S) do not contain the flash security function or protect function against
erroneous write operation.
13. Serial Communication
There is a possibility to receive wrong data due to the noise or other causes on the serial communication.
Therefore, design a printed circuit board so as to avoid noise.
Retransmit the data if an error occurs because of applying the checksum to the last data in consideration of
receiving wrong data due to the noise.
14. When Using Dual Clock Products as Single Clock Products
Use the X0A pin connected to Vss, and use the X1A pin as open.
相關(guān)PDF資料
PDF描述
MB90F883BPMC 16-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP100
MB90F883BSPF 16-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP100
MB90F884CSPF 16-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP100
MB90F883BHPF 16-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP100
MB90F884CSPMC 16-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP100
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