- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69021 > MB90F946APF MICROCONTROLLER, PQFP100 PDF資料下載
參數(shù)資料
| 型號： | MB90F946APF |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 27/57頁 |
| 文件大?。?/td> | 1586K |
| 代理商： | MB90F946APF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁當(dāng)前第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
7544 Group
MITSUBISHI MICROCOMPUTERS
33
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Som
e parametric
limits
are
subject
to change.
Fig. 39 External circuit of ceramic resonator and quartz-crys-
tal oscillator
Fig. 41 External clock input circuit
XIN
XOUT
External oscillation
circuit
VCC
VSS
Open
M37544
Clock Generating Circuit
An oscillation circuit can be formed by connecting a resonator be-
tween XIN and XOUT, and an RC oscillation circuit can be formed
by connecting a resistor and a capacitor.
Use the circuit constants in accordance with the resonator
manufacturer's recommended values.
(1) Ring oscillator operation
When the MCU operates by the ring oscillator for the main clock,
connect XIN pin to VCC and leave XOUT pin open.
The clock frequency of the ring oscillator depends on the supply
voltage and the operation temperature range.
Be careful that variable frequencies when designing application
products.
(2) Ceramic resonator and quartz-crystal oscillator
When the ceramic resonator and quartz-crystal oscillator is used
for the main clock, connect the ceramic / quartz-crystal oscillator
and the external circuit to pins XIN and XOUT at the shortest dis-
tance. A feedback resistor is built in between pins XIN and XOUT.
(3) RC oscillation
When the RC oscillation is used for the main clock, connect the
XIN pin to the external circuit of resistor R and the capacitor C at
the shortest distance and leave XOUT pin open.
The frequency is affected by a capacitor, a resistor and a micro-
computer.
So, set the constants within the range of the frequency limits.
(4) External clock
When the external signal clock is used for the main clock, connect
the XIN pin to the clock source and leave XOUT pin open.
Externally connect a
damping resistor Rd
depending on the oscil-
lation frequency.
(A feedback resistor is
built-in.)
Use the resonator
manufacturer’s recom-
mended value because
constants such as ca-
pacitance depend on
the resonator.
Note:
Connect the external
circuit of resistor R
and the capacitor C at
the shortest distance.
The frequency is af-
fected by a capacitor,
a resistor and a micro-
computer.
So, set the constants
within the range of the
frequency limits.
Note:
XIN
COUT
CIN
XOUT
M37544
Rd
XIN
XOUT
C
R
M37544
XIN
XOUT
M37544
Open
Fig.38 Processing of XIN and XOUT pins at ring oscillator op-
eration
The clock frequency of the
ring oscillator depends on
the supply voltage and the
operation temperature
range.
Be careful that variable fre-
quencies and obtain the
sufficient margin.
Note:
Fig. 40 External circuit of RC oscillatio
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB90F947APF | MICROCONTROLLER, PQFP100 |
| MB90F949APF | MICROCONTROLLER, PQFP100 |
| MB90947APF | MICROCONTROLLER, PQFP100 |
| MB90F947PF | 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP100 |
| MB90F949PF | 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP100 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB90F947APFR-GS-SPE1 | 制造商:FUJITSU 功能描述: |
| MB90F962SPMCR-GE1 | 制造商:FUJITSU 功能描述:IC MCU 16BIT 16LX 48LQFP |
| MB90F962SPMCR-G-JNE1 | 制造商:FUJITSU 功能描述: |
| MB90V340A-102CR | 制造商:FUJITSU 功能描述: |
| MB-910 | 制造商:Circuit Test 功能描述:BREADBOARD WIRING KIT - 350 PCS |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。