- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377922 > MB90F927 (Fujitsu Limited) 16-bit Microcontrolle PDF資料下載
參數(shù)資料
| 型號： | MB90F927 |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Microcontrolle |
| 中文描述： | 16位Microcontrolle |
| 文件頁數(shù)： | 15/63頁 |
| 文件大?。?/td> | 941K |
| 代理商： | MB90F927 |
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頁當前第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頁第58頁第59頁第60頁第61頁第62頁第63頁
MB90925 Series
15
Power supply pins
Devices are designed to prevent problems such as latch-up when multiple V
CC
and V
SS
pins are used, by providing
internal connections between pins having the same potential. However, in order to reduce unwanted radiation,
to prevent abnormal operation of strobe signals due to rise in ground level, and to maintain total output current
ratings, all V
CC
and V
SS
pins should always be connected externally to power supplies and ground respectively.
As shown in the figure below, all V
CC
pins must have the same potential and all V
SS
pins must be at the same
potential. If there are multiple V
CC
or V
SS
systems, the device will not operate properly even within the warranted
operating range.
In addition, care must be given to connecting the V
CC
and V
SS
pins of this device to the current supply source
with as low impedance as possible. It is recommended that a 1.0
μ
F bypass capacitor be connected between
the V
CC
and V
SS
pins as close to the pins as possible.
Turning-on sequence of power supply to A/D converter and analog inputs
The A/D converter power supply (AV
CC
, AVRH) and analog inputs (AN0 to AN7) must be applied after the digital
power supply (V
CC
) is switched on. When power is shut off, the A/D converter power supply and analog inputs
must be cut off before the digital power supply is switched off (V
CC
) . In both power-on and power-off, care should
be taken that AVRH does not exceed AV
CC
. Even when pins which double as analog input pins are used as input
ports, be sure that the input voltage does not exceed AV
CC
.
Handling the power supply for high-current output buffer pins (DV
CC
, DV
SS
)
Always apply power supply to high-current output buffer pins (DV
CC
, DV
SS
) after the digital power supply (V
CC
) is
turned on. Also when switching the power off, always shut off the power supply to the high-current output buffer
pins (DV
CC
, DV
SS
) before switching off the digital power supply (V
CC
) . There is no problem if the high-current
output buffer pins and digital power supplies are turned off and on at the same time.
Even when the high-current output buffer pins are used as general-purpose ports, the power supply for high
current output buffer pins (DV
CC
, DV
SS
) should be applied to these pins.
Pull-up/pull-down resistor
MB90925 series does not support internal pull-up/pull-down resistor. If necessary, use external components.
V
CC
V
SS
V
CC
V
CC
V
CC
V
CC
V
SS
V
SS
V
SS
V
SS
Power supply input pins (V
CC
/V
SS
)
相關PDF資料 |
PDF描述 |
|---|---|
| MB90F927PF-GE1 | 16-bit Microcontrolle |
| MB90F927PFV-GE1 | 16-bit Microcontrolle |
| MB90F927S | 16-bit Microcontrolle |
| MB90F927SPF-GE1 | 16-bit Microcontrolle |
| MB90F927SPFV-GE1 | 16-bit Microcontrolle |
相關代理商/技術參數(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。