參數(shù)資料
型號(hào)： MB90P678
廠商： Fujitsu Limited
英文描述： 16-Bit Proprietary Microcontroller(16位專用微控制器)
中文描述： 16位微控制器專利（16位專用微控制器）
文件頁數(shù)： 19/111頁
文件大?。?/td> 736K
代理商： MB90P678
19
MB90670/675 Series
5. Crystal Oscillation Circuit
Noise in the vicinity of the X0 and X1 pins will cause this device to operate incorrectly. Design the printed circuit
board so that the bypass capacitor connecting X0, X1 and the crystal oscillator (or ceramic oscillator) to ground
is located as close to the device as possible.
In addition, because printed circuit board artwork in which the area around the X0 and X1 pins is surrounded
by ground provides stable operation, such an arrangement is strongly recommended.
6. Sequence for Applying the A/D Converter Power Supply and the Analog Inputs
Always be sure to apply the digital power supply (V
CC
) before applying the A/D converter power supply (AV
CC
,
AVRH, and AVRL) and the analog inputs (AN0 to AN7).
In addition, when the power is turned off, turn off the A/D converter power supply and the analog inputs first,
and then turn off the digital power supply.
Whether applying or cutting off the power, be certain that AVRH does not exceed AV
CC
. (Turning on or off the
analog and digital power supplies simultaneously will not cause any problems.)
7. “MOV @AL, AH” and “MOVW @AL, AH” Instructions
When the above instructions are used in the I/O space, an unnecessary write (#FF, #FFFF) may be performed
on the internal bus. This problem can be avoided by using a function that causes the compiler/assembler to
generate an NOP immediately before either the above instructions. This problem does not arise when accessing
the RAM space.
I
PROGRAMMING TO THE OTPROM ON THE MB90P673/P678
In EPROM mode, the MB90P673/P678 OTPROM functions equivalent to the MBM27C1000. This allows the
PROM to be programmed with a general-purpose EPROM programmer by using the dedicated socket adapter.
However, the MB90P673/P678 does not support electronic signature (device identification code) mode.
1. EPROM Programmer Socket Adapter and Recommended Programmer Manufacturer
Inquiry: Sun Hayato Co., Ltd.: TEL: (81)-3-3986-0403
FAX: (81)-3-5396-9106
Minato Electronics Inc.: TEL: USA (1)-916-348-6066
JAPAN (81)-45-591-5611
Data I/O Co., Ltd.: TEL: USA/ASIA (1)-206-881-6444
EUROPE (49)-8-985-8580
Part no.
Package
Compatible socket adapter
Sun Hayato Co., Ltd.
Mnato Electronics Inc.
Data I/O Co., Ltd.
1890A
1891
1930
UNSITE
3900
2900
MB90P673PF
QFP-80
ROM-80QF-32DP-16L
—
—
MB90P673PFV
SQFP-80
ROM-80SQF-32DP-16L
—
—
MB90P678PF
QFP-100
ROM-100QF-32DP-16L
—
—
MB90P678PFV
SQFP-100
ROM-100SQF-32DP-16L
Recommended
Recommended
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